2,984 results match your criteria ACS applied materials & interfaces[Journal]


Perylene-Based Photoactive Material as Double-Strand DNA Intercalating Probe for Ultrasensitive Photoelectrochemical Biosensing.

ACS Appl Mater Interfaces 2019 Apr 17. Epub 2019 Apr 17.

Photoelectrochemical (PEC) sensing techniques have attracted considerable concerns because of the intrinsic merit of complete separation between the excitation light and responsive current, but still remain a great challenge for further potential application. It is assigned to the scarcity of photoactive materials with narrow band gap/good biosafety/high photon-to-electron conversion efficiency, and unfavorable processing methods for photoactive materials on ITO. Herein, we employed perylene-based polymer (PTC-NH) with exceptional photoelectrical properties to develop a red-light driven PEC sensor for ultrasensitive biosensing based on its superior electrostatic intercalation efficiency in dsDNA to that in ssDNA, with DNA adenine methyltransferase (Dam MTase) as the model target. Read More

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http://dx.doi.org/10.1021/acsami.9b04299DOI Listing

A flexible self-cleaning broadband antireflective film inspired by the transparent cicada wings.

ACS Appl Mater Interfaces 2019 Apr 17. Epub 2019 Apr 17.

Cicada wings, covered with arranged nanostructure, were widely studied owing to their highly transparency and low reflection. However, limited by technologies, its exquisite surface structures and multifunctional features were not inherited and applied by most artificial materials adequately. Here, the excellent optical properties of cicada wing were investigated in details experimentally and theoretically. Read More

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http://pubs.acs.org/doi/10.1021/acsami.9b01948
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http://dx.doi.org/10.1021/acsami.9b01948DOI Listing
April 2019
1 Read

Tailoring Energy and Power Density through Controlling the Concentration of Oxygen Vacancies in VO/PEDOT Nanocable-Based Supercapacitors.

ACS Appl Mater Interfaces 2019 Apr 12. Epub 2019 Apr 12.

Oxygen vacancies (Vo¨) play a crucial role in energy storage materials. Oxygen vacancy enriched vanadium pentoxide/poly(3,4-ethylenedioxythiophene) (Vo¨-VO/PEDOT) nanocables were prepared through the one-pot oxidative polymerization of PEDOT. PEDOT is used to create tunable concentrations of Vo¨ in the surface layer of VO, which has been confirmed by X-ray absorption near edge structure (XANES) analysis and X-ray photoelectron spectroscopy (XPS) measurements. Read More

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http://dx.doi.org/10.1021/acsami.9b03830DOI Listing

Plasmon Excitations in Mixed Metallic Nanoarrays.

ACS Nano 2019 Apr 17. Epub 2019 Apr 17.

Department of Applied Physics, COMP Centre of Excellence , Aalto University School of Science , P.O. Box 11100, FI-00076 Aalto , Finland.

Features of the surface plasmon from macroscopic materials emerge in molecular systems, but differentiating collective excitations from single-particle excitations in molecular systems remains elusive. The rich interactions between single-particle electron-hole and collective electron excitations produce phenomena related to the chemical physics aspects within the atomic array. We study the plasmonic properties of atomic arrays of noble (Au, Ag, and Cu) and transition-metal (Pd, Pt) homonuclear chains using time-dependent density functional theory and their Kohn-Sham transition contributions. Read More

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http://dx.doi.org/10.1021/acsnano.8b09826DOI Listing

Lasing in Ni Nanodisk Arrays.

ACS Nano 2019 Apr 15. Epub 2019 Apr 15.

Department of Applied Physics , Aalto University School of Science , FI-00076 Aalto , Finland.

We report on lasing at visible wavelengths in arrays of ferromagnetic Ni nanodisks overlaid with an organic gain medium. We demonstrate that by placing an organic gain material within the mode volume of the plasmonic nanoparticles both the radiative and, in particular, the high ohmic losses of Ni nanodisk resonances can be compensated. Under increasing pump fluence, the systems exhibit a transition from lattice-modified spontaneous emission to lasing, the latter being characterized by highly directional and sub-nanometer line width emission. Read More

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http://pubs.acs.org/doi/10.1021/acsnano.9b01006
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http://dx.doi.org/10.1021/acsnano.9b01006DOI Listing
April 2019
1 Read

A General Approach to Free-Standing Nanoassemblies via Acoustic Levitation Self-Assembly.

ACS Nano 2019 Apr 15. Epub 2019 Apr 15.

Department of Chemical Engineering, Faculty of Engineering , Monash University , Clayton 3800 , Victoria , Australia.

Droplets suspended by acoustic levitation provide genuine substrate-free environments for understanding unconventional fluid dynamics, evaporation kinetics, and chemical reactions by circumventing solid surface and boundary effects. Using a fully levitated air-water interface by acoustic levitation in conjunction with drying-mediated nanoparticle self-assembly, here, we demonstrate a general approach to fabricating free-standing nanoassemblies, which can totally avoid solid surface effects during the entire process. This strategy has no limitation for the sizes or shapes of constituent metallic nanoparticle building blocks and can also be applied to fabricate free-standing bilayered and trilayered nanoassemblies or even three-dimensional hollow nanoassemblies. Read More

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http://pubs.acs.org/doi/10.1021/acsnano.8b09628
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http://dx.doi.org/10.1021/acsnano.8b09628DOI Listing
April 2019
1 Read

Spin Filtering in CrI Tunnel Junctions.

ACS Appl Mater Interfaces 2019 Apr 18. Epub 2019 Apr 18.

Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience , University of Nebraska , Lincoln , Nebraska 68588 , United States.

The recently discovered magnetism of two-dimensional (2D) van der Waals crystals has attracted a lot of attention. Among these materials is CrI, a magnetic semiconductor, exhibiting transitions between ferromagnetic and antiferromagnetic orderings under the influence of an applied magnetic field. Here, using first-principles methods based on density functional theory, we explore spin-dependent transport in tunnel junctions formed of face-centered cubic Cu(111) electrodes and a CrI tunnel barrier. Read More

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http://dx.doi.org/10.1021/acsami.9b01942DOI Listing
April 2019
4 Reads

Doping-Induced Hydrogen-Bond Engineering in Polymeric Carbon Nitride To Significantly Boost the Photocatalytic H Evolution Performance.

ACS Appl Mater Interfaces 2019 Apr 17. Epub 2019 Apr 17.

Department of Applied Physics, School of Physics and Electronics, and School of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China.

Unlike graphene, graphitic carbon nitride (CN) polymer contains a weak hydrogen bond and van der Waals (vdWs) interactions besides a strong covalent bond, which controls its final morphology and functionality. Herein, we propose a novel strategy, hydrogen-bond engineering, to tune hydrogen bonds in polymeric CN through nonmetal codoping. Incorporation of B and P dopants breaks partial hydrogen bonds within the layers and simultaneously weakens the vdWs interaction between neighboring layers, resulting in ultrathin codoped CN nanosheets. Read More

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http://dx.doi.org/10.1021/acsami.8b22366DOI Listing

Resilient SiN Nanobelt Aerogel as Fire-Resistant and Electromagnetic Wave-Transparent Thermal Insulator.

ACS Appl Mater Interfaces 2019 Apr 9. Epub 2019 Apr 9.

With the prevailing energy challenges and the rapid development of aerospace engineering, high-performance thermal insulators with various functions are attracting more and more attention. Ceramic aerogels are promising candidates for thermal insulators to be applied in harsh environments because of their low thermal conductivity and simultaneously excellent thermal and chemical stability. In general, the effective properties of this class of materials depend on both their microstructures and the intrinsic properties of their building blocks. Read More

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http://dx.doi.org/10.1021/acsami.9b02869DOI Listing

Light-Induced Reversible DNA Ligation of Gold Nanoparticle Superlattices.

ACS Nano 2019 Apr 8. Epub 2019 Apr 8.

School of Physics and Astronomy, Faculty of Engineering and Physical Sciences , University of Southampton , Southampton , SO17 1BJ , U.K.

DNA-mediated self-assembly of nanoparticles has been of great interest because it enables access to nanoparticle superstructures that cannot be synthesized otherwise. However, the programmability of higher order nanoparticle structures can be easily lost under DNA denaturing conditions. Here, we demonstrate that light can be employed as an external stimulus to master the stability of nanoparticle superlattices (SLs) via the promotion of a reversible photoligation of DNA in SLs. Read More

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http://dx.doi.org/10.1021/acsnano.9b01294DOI Listing

Self-Assembly by Coordination with Organic Antenna Chromophores for Dye-Sensitized Solar Cells.

ACS Appl Mater Interfaces 2019 Apr 16. Epub 2019 Apr 16.

School of Chemical and Environmental Engineering, Institute of Advanced Functional Materials for Energy , Jiangsu University of Technology , Changzhou 213001 , P. R. China.

The development of new sensitizers and new sensitization methods is one of the important means to enhance the conversion efficiency of dye-sensitized solar cells (DSSCs); the ultimate goal is to broaden the spectral response of dyes, reduce electron recombination, and suppress dye aggregation. In this study, we have developed a series of new self-assembled dyes and applied them in DSSCs. We prepared two organic antenna chromophores S1 and S2 and coordinated them with two acceptors A1 and A2 via zinc to construct A-Zn-S series self-assembled dyes. Read More

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http://dx.doi.org/10.1021/acsami.9b00870DOI Listing

Intraabdominal hypertension/abdominal compartment syndrome after pelvic fractures: How they occur and what can be done?

Injury 2019 Mar 28. Epub 2019 Mar 28.

Department of Orthopedics, Physical Medicine & Rehabilitation, Denver Health Medical Center, University of Colorado, 777 Bannock St, MC 0188, Denver, CO 80204, USA. Electronic address:

Background: Limited data exist regarding intraabdominal hypertension/abdominal compartment syndrome (IAH/ACS) after pelvic fractures. We aimed to explore risk factors for IAH/ACS in pelvic fracture patients, assess the physiological effects of decompressive laparotomy (DL) on IAH/ACS, and generate an algorithm to manage IAH/ACS after pelvic fracture.

Materials And Methods: Pelvic fracture patients were included based on the presence of IAH/ACS. Read More

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http://dx.doi.org/10.1016/j.injury.2019.03.037DOI Listing
March 2019
1 Read

Modus Operandi of Protective and Anti-icing Mechanisms Underlying the Design of Longstanding Outdoor Icephobic Coatings.

ACS Nano 2019 Apr 9. Epub 2019 Apr 9.

CIC nanoGUNE , Donostia San Sebastian 20018 , Spain.

Atmospheric icing has become a global concern due to hazardous consequences of ice accretion on air, land, and sea transport and infrastructure. Icephobic surfaces due to their physicochemical properties facilitate a decrease in ice and snow accumulation under outdoor conditions. However, a serious problem of most superhydrophobic surfaces described in the literature is poor operational durability under harsh corrosive and abrasive loads characteristic of atmospheric operation. Read More

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http://dx.doi.org/10.1021/acsnano.8b09549DOI Listing
April 2019
1 Read

Doped Manipulation of Photoluminescence and Carrier Lifetime from CHNHPbI Perovskite Thin Films.

ACS Appl Mater Interfaces 2019 Apr 17. Epub 2019 Apr 17.

Shaanxi Key Laboratory of Condensed Matter Structures and Properties, School of Natural and Applied Science , Northwestern Polytechnical University , Xi'an 710072 , China.

The compositional doping techniques can delicately tune the band gap, carrier concentration, and mobility of perovskites to optimize the photoelectric properties of materials. It is reported that the doped perovskites have been widely researched in the photovoltaic and photoelectronic field. Here, we show that the photoluminescence intensity and carrier lifetime of CHNHPbI films have been improved by 3 orders of magnitude by incorporating abundant MnAc·4HO in the perovskite precursor solution, which benefits from the morphological change and surface passivation induced by hydration water and surface manganese acetate. Read More

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http://dx.doi.org/10.1021/acsami.9b01506DOI Listing

Cholinium-based Good's buffers ionic liquids as remarkable stabilizers and recyclable preservation media for recombinant small RNAs.

ACS Sustain Chem Eng 2018 Dec 8;6(12):16645-16656. Epub 2018 Nov 8.

CICECO - Aveiro Institute of Materials, Chemistry Department, University of Aveiro, Complexo de Laboratórios Tecnológicos, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.

RNA is a biopolymer of high relevance in the biopharmaceuticals field and in fundamental and applied research; however, the preservation of the RNA stability is still a remarkable challenge. Herein, we demonstrate the enhanced potential of aqueous solutions of self-buffering cholinium-based Good's buffers ionic liquids (GB-ILs), at 20 and 50 % (w/w), as alternative preservation media of recombinant small RNAs. The thermal stability of RNA is highly enhanced by GB-ILs, with an increase of 14 °C in the biopolymer melting temperature - the highest increase observed up to date with ILs. Read More

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http://dx.doi.org/10.1021/acssuschemeng.8b03900DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6443033PMC
December 2018
4 Reads

Suppressed the High-Voltage Phase Transition of P2-Type Oxide Cathode for High-Performance Sodium-Ion Batteries.

ACS Appl Mater Interfaces 2019 Apr 11. Epub 2019 Apr 11.

Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials , Nanjing University , Nanjing 210093 , China.

Sodium-ion batteries (SIBs), using the resourceful Mn-based materials as cathodes, have been considered as promising candidates for large-scale energy-storage applications. However, the representative P2-type Mn-based layered oxide cathode usually suffers from a limited specific capacity and a poor cycle life in Na-ion intercalation and deintercalation processes because of the unavoidable phase transition at a high voltage. Herein, we developed Ru-substituted P2-NaMnO as a promising sodium host with a high reversible capacity and cycle life. Read More

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http://pubs.acs.org/doi/10.1021/acsami.9b03326
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http://dx.doi.org/10.1021/acsami.9b03326DOI Listing
April 2019
1 Read

Highly Efficient One-Dimensional Triplet Exciton Transport in a Palladium-Porphyrin-Based Surface-Anchored Metal-Organic Framework.

ACS Appl Mater Interfaces 2019 Apr 12. Epub 2019 Apr 12.

Light Technology Institute , Karlsruhe Institute of Technology , Wolfgang-Gaede-Straße 1 , 76131 Karlsruhe , Germany.

Efficient photon-harvesting materials require easy-to-deposit materials exhibiting good absorption and excited-state transport properties. We demonstrate an organic thin-film material system, a palladium-porphyrin-based surface-anchored metal-organic framework (SURMOF) thin film that meets these requirements. Systematic investigations using transient absorption spectroscopy confirm that triplets are very mobile within single crystalline domains; a detailed analysis reveals a triplet transfer rate on the order of 10 s. Read More

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http://pubs.acs.org/doi/10.1021/acsami.9b03079
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http://dx.doi.org/10.1021/acsami.9b03079DOI Listing
April 2019
6 Reads

One- and Two-Dimensional High-Resolution NMR from Flat Surfaces.

ACS Cent Sci 2019 Mar 11;5(3):515-523. Epub 2019 Feb 11.

Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.

Determining atomic-level characteristics of molecules on two-dimensional surfaces is one of the fundamental challenges in chemistry. High-resolution nuclear magnetic resonance (NMR) could deliver rich structural information, but its application to two-dimensional materials has been prevented by intrinsically low sensitivity. Here we obtain high-resolution one- and two-dimensional P NMR spectra from as little as 160 picomoles of oligonucleotide functionalities deposited onto silicate glass and sapphire wafers. Read More

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http://dx.doi.org/10.1021/acscentsci.8b00916DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6439530PMC

Triplet-Triplet Annihilation Upconversion in Broadly Absorbing Layered Film Systems for Sub-Bandgap Photocatalysis.

ACS Appl Mater Interfaces 2019 Apr 1;11(14):13304-13318. Epub 2019 Apr 1.

Department of Chemical and Environmental Engineering , Yale University , New Haven , Connecticut 06511 , United States.

Upconversion (UC) of sub-bandgap photons extends the effective light absorption range of photovoltaic and photocatalytic devices, allowing them to reach higher conversion efficiencies. Recent advances in polymer host materials make it possible to translate triplet-triplet annihilation (TTA)-UC, the UC mechanism most suitable for this purpose, to solid films that can be integrated into devices. The promise of these films is currently limited by the narrow light absorption of TTA-UC sensitizer chromophores, but incorporating multiple sensitizers into layered film systems presents a promising strategy for producing UC materials with broadened light absorption. Read More

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http://dx.doi.org/10.1021/acsami.9b01945DOI Listing
April 2019
1 Read

Relieving the "Sudden Death" of Li-O Batteries by Grafting an Antifouling Film on Cathode Surfaces.

ACS Appl Mater Interfaces 2019 Apr 11. Epub 2019 Apr 11.

State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry , Chinese Academy of Science , Changchun 130022 , China.

The "sudden-death" phenomenon has been frequently encountered during discharging of Li-O batteries and has been ascribed to the growth of a blocking film of LiO on the cathode surface. Recent fundamental study revealed that this dilemma could be addressed by discharging LiO in the electrolyte solution rather than on the cathode surface. However, even for Li-O batteries operated under the conditions favorable for the solution growth of LiO, sudden death still persists and its origin remains incompletely understood. Read More

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http://dx.doi.org/10.1021/acsami.8b22643DOI Listing

Nanoscale Patterning of Colloidal Nanocrystal Films for Nanophotonic Applications Using Direct Write Electron Beam Lithography.

ACS Appl Mater Interfaces 2019 Apr 12. Epub 2019 Apr 12.

Department of Chemical Engineering and Materials Science , University of Minnesota , 421 Washington Avenue SE , Minneapolis , Minnesota 55455 , United States.

The small size of colloidal nanocrystal quantum dots (QDs) leads to a variety of unique optical properties that are well-suited to nanophotonics, including bright, tunable photoluminescence (PL). However, exploring the properties of solid QD assemblies at the nanoscale has proven challenging because of the limitations in the nanoscale QD patterning methods. Generally, the precise placement of QD solids is difficult to achieve, especially for tall structures with multiple QD layers, and when it is achieved the patterns often cannot withstand the further processing steps required for final device construction. Read More

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http://dx.doi.org/10.1021/acsami.9b01159DOI Listing

Transparent Conductive Dielectric-Metal-Dielectric Structures for Electrochromic Applications Fabricated by High-Power Impulse Magnetron Sputtering.

ACS Appl Mater Interfaces 2019 Mar 29. Epub 2019 Mar 29.

Key Laboratory for Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu 610031 , China.

The growing applications of electrochromic (EC) devices have generated great interest in bifunctional materials that can serve as both transparent conductive (TC) and EC coatings. WO/Ag/WO (WAW) heterostructures, in principle, facilitate this extension of EC technology without reliance on an indium tin oxide (ITO) substrate. However, these structures synthesized using traditional methods have shown significant performance deficiencies. Read More

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http://dx.doi.org/10.1021/acsami.9b00191DOI Listing
March 2019
6.723 Impact Factor

Synthesis and Characterization of Novel Triarylamine Derivatives with Dimethylamino Substituents for Application in Optoelectronic Devices.

ACS Appl Mater Interfaces 2019 Apr 9. Epub 2019 Apr 9.

Functional Polymeric Materials Laboratory, Institute of Polymer Science and Engineering , National Taiwan University , 1 Roosevelt Road, 4th Sec. , Taipei 10617 , Taiwan.

Two novel triphenylamine-based derivatives with dimethylamino substituents, N, N'-bis(4-dimethylaminophenyl)- N, N'-bis(4-methoxyphenyl)-1,4-phenylenediamine (NTPPA) and N, N'-bis(4-dimethylaminophenyl)- N, N'-bis(4-methoxyphenyl)-1,1'-biphenyl-4,4'-diamine (NTPB), were readily prepared for investigating the optical and electrochromic behaviors. These two obtained materials were introduced into electrochromic devices accompanied with heptyl viologen (HV), and the devices demonstrate a high average coloration efficiency of 287 cm/C and electrochemical stability. Besides, NTPB/HV was further used to fabricate electrofluorochromic devices with a gel type electrolyte, and exhibit a controllable and high photoluminescence contrast ratio ( I/ I) of 32. Read More

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http://dx.doi.org/10.1021/acsami.9b00402DOI Listing

Gold Nanoparticles Cure Bacterial Infection with Benefit to Intestinal Microflora.

ACS Nano 2019 Mar 29. Epub 2019 Mar 29.

Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for NanoScience and Technology , No. 11 Zhongguancun Beiyitiao , Beijing 100190 , People's Republic of China.

Antibiotics that are most used to cure bacterial infections in the clinic result in the imbalance of intestinal microflora, destroy the intestinal barrier, and induce bacterial resistance. There is an urgent need for antibacterial agent therapy for bacterial infections that does not destroy intestinal microflora. Herein, we applied 4,6-diamino-2-pyrimidinethiol (DAPT)-coated Au nanoparticles (D-Au NPs) for therapy of bacterial infection induced by Escherichia coli ( E. Read More

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http://dx.doi.org/10.1021/acsnano.9b01002DOI Listing

Photochemically Excited, Pulsating Janus Colloidal Motors of Tunable Dynamics.

ACS Nano 2019 Apr 1. Epub 2019 Apr 1.

School of Materials Science and Engineering , Harbin Institute of Technology (Shenzhen) , Shenzhen , Guangdong 518055 , China.

Spontaneous periodicity is widely found in many biological and synthetic systems, and designing colloidal motors that mimic this feature may not only facilitate our understanding of how complexity emerges but also enable applications that benefit from a time-varying activity. However, there is so far no report on a colloidal motor system that shows controllable and spontaneous oscillation in speeds. Inspired by previous studies of oscillating silver microparticles, we report silver-poly(methyl methacrylate) microsphere Janus colloidal motors that moved, interacted with tracers, and exhibited negative gravitaxis all in an oscillatory fashion. Read More

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http://dx.doi.org/10.1021/acsnano.8b08276DOI Listing
April 2019
12.881 Impact Factor

New Chemical Insights into the Beneficial Role of AlO Cathode Coatings in Lithium-ion Cells.

ACS Appl Mater Interfaces 2019 Apr 3;11(15):14095-14100. Epub 2019 Apr 3.

Department of Physics and Atmospheric Science , Dalhousie University , Halifax , Nova Scotia B3H 4R2 , Canada.

Inorganic surface coatings such as AlO are commonly applied on positive electrode materials to improve the cycling stability and lifetime of lithium-ion cells. The beneficial effects are typically attributed to the chemical scavenging of corrosive HF and the physical blockage of electrolyte components from reaching the electrode surface. The present work combines published thermochemistry data with new density functional theory calculations to propose a new mechanism of action: the spontaneous reaction of the LiPF electrolyte salt with AlO-based surface coatings. Read More

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http://dx.doi.org/10.1021/acsami.8b22743DOI Listing
April 2019
1 Read

Fundamental Limits to the Coupling between Light and 2D Polaritons by Small Scatterers.

ACS Nano 2019 Mar 27. Epub 2019 Mar 27.

ICFO-Institut de Ciéncies Fotòniques, The Barcelona Institute of Science and Technology , 08860 Castelldefels ( Barcelona ), Spain.

Polaritonic modes in two-dimensional van der Waals materials display short in-plane wavelengths compared with light in free space. As interesting as this may look from both fundamental and applied viewpoints, such large confinement is accompanied by poor in/out optical coupling, which severely limits the application of polaritons in practical devices. Here, we quantify the coupling strength between light and 2D polaritons in both homogeneous and anisotropic films using accurate rigorous analytical methods. Read More

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http://dx.doi.org/10.1021/acsnano.8b09283DOI Listing

Hierarchically Structured All-biomass Air Filters with High Filtration Efficiency and Low Air Pressure Drop Based on Pickering Emulsion.

ACS Appl Mater Interfaces 2019 Apr 4;11(15):14266-14274. Epub 2019 Apr 4.

College of Food Science and Technology , Huazhong Agricultural University , No. 1 Shizishan Road , Wuhan , Hubei 430070 , PR China.

Although a high-efficiency air filter can be achieved from electrospun nanofabrics, it has been challenging to reduce the pressure drop, increase the filtration capacity, and improve the production rate of the electrospinning process. Here, we report a hierarchically structured all-biomass air filter with high filtration efficiency and low air pressure drop based on applying Pickering emulsions to generate protein-functionalized nanostructures. Specifically, the air filter consists of cellulose nanofibers (CNF)/zein nanoparticles as active fillers prepared from Pickering emulsions and porous structures of microfibers as the frame from wood pulp (WP). Read More

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http://dx.doi.org/10.1021/acsami.8b21116DOI Listing
April 2019
2 Reads

Ordered Mesoporous Graphitic Carbon/Iron Carbide Composites with High Porosity as a Sulfur Host for Li-S Batteries.

ACS Appl Mater Interfaces 2019 Apr 26;11(14):13194-13204. Epub 2019 Mar 26.

Particulate Fluids Processing Centre, School of Chemistry , The University of Melbourne , Melbourne , Victoria 3010 , Australia.

The lithium-sulfur battery (LSB) is a promising candidate for future energy storage but faces technological challenges including the low electronic conductivity of sulfur and the solubility of intermediates during cycling. Additionally, current host materials often lack sufficient conductivity and porosity to raise the sulfur loading to over 80 wt %. Here, ordered mesoporous graphitic carbon/iron carbide nanocomposites were prepared via an evaporation-induced self-assembly process using soluble resol, prehydrolyzed tetraethyl orthosilicate (TEOS), and iron(III) chloride as the carbon, silica (SiO), and iron precursors, respectively. Read More

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http://dx.doi.org/10.1021/acsami.8b21627DOI Listing

Aguilarite AgSSe Thermoelectric Material: Natural Mineral with Low Lattice Thermal Conductivity.

ACS Appl Mater Interfaces 2019 Apr 25;11(13):12632-12638. Epub 2019 Mar 25.

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai 200050 , China.

AgSSe, named as aguilarite in mineralogy, belongs to the family of liquid-like superionic compounds at middle temperature, but its thermoelectric (TE) properties are rarely investigated so far. In this study, a series of Ag-deficient AgSSe samples have been synthesized by the melting-annealing method. Their crystal structures, phase transition features, and electrical and thermal transport properties have been systematically investigated. Read More

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http://dx.doi.org/10.1021/acsami.8b22741DOI Listing

Autonomous Molecular Design: Then and Now.

ACS Appl Mater Interfaces 2019 Mar 25. Epub 2019 Mar 25.

Kebotix, Inc. , 501 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States.

The success of deep machine learning in processing of large amounts of data, for example, in image or voice recognition and generation, raises the possibilities that these tools can also be applied for solving complex problems in materials science. In this forum article, we focus on molecular design that aims to answer the question on how we can predict and synthesize molecules with tailored physical, chemical, or biological properties. A potential answer to this question could be found by using intelligent systems that integrate physical models and computational machine learning techniques with automated synthesis and characterization tools. Read More

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http://dx.doi.org/10.1021/acsami.9b01226DOI Listing

Fast Strategy to Functional Paper Surfaces.

ACS Appl Mater Interfaces 2019 Apr 3;11(15):14445-14456. Epub 2019 Apr 3.

School of Pharmaceutical Sciences and School of Biotechnology and Pharmaceutical Engineering , Nanjing Tech University , Nanjing 211816 , China.

Paper, with advantages of low-cost, easy fabrication and disposal, flexibility and renewability, is a suitable substrate material for various applications. Functionalization and patterning on paper substrates are commonly required in many applications. Although many methods have been developed to achieve this, they typically suffer from some drawbacks such as time-consuming process, specific device dependence, lack of flexibility, low patterning resolution, and so forth. Read More

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http://pubs.acs.org/doi/10.1021/acsami.9b00512
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http://dx.doi.org/10.1021/acsami.9b00512DOI Listing
April 2019
1 Read

New, Effective, and Low-Cost Dual-Functional Binder for Porous Silicon Anodes in Lithium-Ion Batteries.

ACS Appl Mater Interfaces 2019 Apr 2;11(15):14051-14058. Epub 2019 Apr 2.

School of Materials Science and Engineering , Zhejiang University , Hangzhou 310027 , P. R. China.

In this work, a new effective and low-cost binder applied in porous silicon anode is designed through blending of low-cost poly(acrylic acid) (PAA) and poly(ethylene- co-vinyl acetate) (EVA) latex (PAA/EVA) to avoid pulverization of electrodes and loss of electronic contact because of huge volume changes during repeated charge/discharge cycles. PAA with a large number of carboxyl groups offers strong binding strength among porous silicon particles. EVA with high elastic property enhances the ductility of the PAA/EVA binder. Read More

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http://pubs.acs.org/doi/10.1021/acsami.8b21936
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http://dx.doi.org/10.1021/acsami.8b21936DOI Listing
April 2019
1 Read

Optics of Perovskite Solar Cell Front Contacts.

ACS Appl Mater Interfaces 2019 Apr 12. Epub 2019 Apr 12.

Department of Applied Physics and Materials Research Center , The Hong Kong Polytechnic University , Hung Hom , Kowloon , Hong Kong.

The front contact has a major impact on the electrical and optical properties of perovskite solar cells. The front contact is part of the junction of the solar cell and must provide lateral charge transport to the terminals and should allow for an efficient light incoupling, while having low optical losses. The complex requirements of the perovskite solar front contact will be described and the optics of the front contact will be investigated. Read More

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http://dx.doi.org/10.1021/acsami.8b16586DOI Listing
April 2019
1 Read

Nacre-Mimetic Graphene Oxide/Cross-Linking Agent Composite Films with Superior Mechanical Properties.

ACS Nano 2019 Mar 25. Epub 2019 Mar 25.

We report a graphene oxide/cross-linking agent (GO/CA) composite inspired by the nacre structure. Based on the "brick-and-mortar" concept of nacre, graphene oxide and a cross-linking agent are covalently conjugated in the form of nacre. The mechanical characteristics of the nacre-mimetic GO/CA composite film can be controlled by adjusting the preparation method, degree of cross-linking, and cross-linking times. Read More

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http://dx.doi.org/10.1021/acsnano.9b00158DOI Listing
March 2019
1 Read

Graphene Oxide-Enabled Synthesis of Metal Oxide Origamis for Soft Robotics.

ACS Nano 2019 Mar 25. Epub 2019 Mar 25.

Department of Chemical and Biomolecular Engineering , National University of Singapore (NUS) , 117585 , Singapore.

Origami structures have been widely applied in various technologies especially in the fields of soft robotics. Metal oxides (MOs) have recently emerged as unconventional backbone materials for constructing complex origamis with distinct functionalities. However, the MO origami structures reported in the literature were rigid and not deformable, thus limiting their applications to soft robotics. Read More

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http://dx.doi.org/10.1021/acsnano.9b00144DOI Listing

Highly Efficient Active All-Dielectric Metasurfaces Based on Hybrid Structures Integrated with Phase-Change Materials: From Terahertz to Optical Ranges.

ACS Appl Mater Interfaces 2019 Apr 2;11(15):14229-14238. Epub 2019 Apr 2.

State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering , Tsinghua University , Beijing 100084 , China.

Recently, all-dielectric metasurfaces (AMs) have emerged as a promising platform for high-efficiency devices ranging from the terahertz to optical ranges. However, active and fast tuning of their properties, such as amplitude, phase, and operating frequency, remains challenging. Here, a generic method is proposed for obtaining high-efficiency active AMs from the terahertz to optical ranges by using "hybrid structures" integrated with phase-change materials. Read More

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http://dx.doi.org/10.1021/acsami.8b22466DOI Listing
April 2019
2 Reads

High-Performance WS Monolayer Light-Emitting Tunneling Devices Using 2D Materials Grown by Chemical Vapor Deposition.

ACS Nano 2019 Mar 21. Epub 2019 Mar 21.

Department of Materials , University of Oxford , Parks Road , Oxford OX1 3PH , United Kingdom.

The solid progress in the study of a single two-dimensional (2D) material underpins the development for creating 2D material assemblies with various electronic and optoelectronic properties. We introduce an asymmetric structure by stacking monolayer semiconducting tungsten disulfide, metallic graphene, and insulating boron nitride to fabricate numerous red channel light-emitting devices (LEDs). All the 2D crystals were grown by chemical vapor deposition (CVD), which has great potential for future industrial scale-up. Read More

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http://dx.doi.org/10.1021/acsnano.9b00211DOI Listing

Self-Integrated Hybrid Ultraviolet Photodetectors Based on the Vertically Aligned InGaN Nanorod Array Assembly on Graphene.

ACS Appl Mater Interfaces 2019 Apr 27;11(14):13589-13597. Epub 2019 Mar 27.

State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , China.

Integration of one-dimensional (1D) semiconductors with two-dimensional (2D) materials into hybrid systems is identified as promising applications for new optoelectronic and photodetection devices. Herein, a self-integrated hybrid ultraviolet (UV) photodetector based on InGaN nanorod arrays (NRAs) sandwiched between transparent top and back graphene contacts forming a Schottky junction has been demonstrated for the first time. The controlled van der Waals epitaxy of the vertically aligned InGaN NRA assembly on graphene-on-Si substrates is achieved by plasma-assisted molecular beam epitaxy. Read More

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http://dx.doi.org/10.1021/acsami.9b00940DOI Listing
April 2019
6.723 Impact Factor

Covalent Confinement of Sulfur Copolymers onto Graphene Sheets Affords Ultrastable Lithium-Sulfur Batteries with Fast Cathode Kinetics.

ACS Appl Mater Interfaces 2019 Apr 29;11(14):13234-13243. Epub 2019 Mar 29.

College of Energy, State Key Laboratory of Organic-Inorganic Composites , Beijing University of Chemical Technology , 15 North Third Ring East Road , Chaoyang District, Beijing 100029 , China.

Lithium-sulfur (Li-S) batteries have received significant attention due to the high theoretical specific capacity of sulfur (1675 mA h g). However, the practical applications are often handicapped by sluggish electrochemical kinetics and the "shuttle effect" of electrochemical intermediate polysulfides. Herein, we propose an in-situ copolymerization strategy for covalently confining a sulfur-containing copolymer onto reduced graphene oxide (RGO) to overcome the aforementioned challenges. Read More

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http://dx.doi.org/10.1021/acsami.9b00214DOI Listing

Unusual Thermal Conductivity of Carbon Nanosheets with Self-Emerged Graphitic Carbon Dots.

ACS Appl Mater Interfaces 2019 Apr 29;11(14):13616-13623. Epub 2019 Mar 29.

Department of Energy Engineering , Konkuk University , 120 Neungdong-ro , Gwangjin-gu, Seoul 05023 , Republic of Korea.

The thermal conductivity (κ) of two-dimensional conducting and transparent carbon nanosheets (CNSs) prepared by a catalyst- and transfer-free process is calculated for the first time by the optothermal Raman technique. A systematic structural analysis of CNSs reveals that the thickness of polymer films affects the interaction between molecules and a Si wafer significantly, thus helping to determine the ratio of sp and sp bonding configurations of carbon (C) atoms in the CNS. Notably, the holding time of carbonization can realize a hierarchical structure with graphitic carbon dots emerging from the CNS through the rearrangement of carbon atoms, leading to the excellent κ value of 540 W/(m·K) at 310 K. Read More

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http://pubs.acs.org/doi/10.1021/acsami.9b01959
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http://dx.doi.org/10.1021/acsami.9b01959DOI Listing
April 2019
6 Reads

Bilayer Designed Hydrocarbon Membranes for All-Climate Vanadium Flow Batteries To Shield Catholyte Degradation and Mitigate Electrolyte Crossover.

ACS Appl Mater Interfaces 2019 Apr 26;11(14):13285-13294. Epub 2019 Mar 26.

Institute of Green Chemistry and Energy, Graduate School at Shenzhen , Tsinghua University , Shenzhen 518055 , China.

The use of low-cost hydrocarbon membranes in vanadium flow batteries (VFBs) still remains a great challenge because of the strong oxidation of VO catholyte and rapid capacity fading. Here, we report a bilayer design strategy using an antioxidant and dense cross-linked sulfonated polyimide (cSPI) layer as a protective layer for a sulfonated poly(ether ether ketone) (SPEEK) membrane to shield catholyte degradation and mitigate electrolyte crossover. A scalable process is developed to fabricate an integrated bilayer SPEEK/cSPI membrane without delamination by spraying a SPEEK transition layer between the two polymers. Read More

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http://dx.doi.org/10.1021/acsami.9b01632DOI Listing

Tuning the Excited-State Dynamics of CuI Films with Electrochemical Bias.

ACS Energy Lett 2019 Mar 13;4(3):702-708. Epub 2019 Feb 13.

Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States.

Owing to its high hole conductivity and ease of preparation, CuI was among the first inorganic hole-transporting materials that were introduced early on in metal halide perovskite solar cells, but its full potential as a semiconductor material is still to be realized. We have now performed ultrafast spectroelectrochemical experiments on ITO/CuI electrodes to show the effect of applied bias on the excited-state dynamics in CuI. Under operating conditions, the recombination of excitons is dependent on the applied bias, and it can be accelerated by decreasing the potential from +0. Read More

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http://dx.doi.org/10.1021/acsenergylett.9b00182DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6413481PMC

How Defects Control the Out-of-Equilibrium Dissipative Evolution of a Supramolecular Tubule.

ACS Nano 2019 Mar 21. Epub 2019 Mar 21.

Department of Innovative Technologies , University of Applied Sciences and Arts of Southern Switzerland , Galleria 2, Via Cantonale 2c , CH-6928 Manno , Switzerland.

Supramolecular architectures that work out-of-equilibrium or that can change in specific ways when absorbing external energy are ubiquitous in nature. Gaining the ability to create via self-assembly artificial materials possessing such fascinating behaviors would have a major impact in many fields. However, the rational design of similar dynamic structures requires to understand and, even more challenging, to learn how to master the molecular mechanisms governing how the assembled systems evolve far from the equilibrium. Read More

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http://dx.doi.org/10.1021/acsnano.8b09523DOI Listing

Protein-Induced Gold Nanoparticle Assembly for Improving the Photothermal Effect in Cancer Therapy.

ACS Appl Mater Interfaces 2019 Mar 14;11(12):11136-11143. Epub 2019 Mar 14.

Institute of Applied Bioresource Research, College of Animal Science , Zhejiang University , Yuhangtang Road 866 , Hangzhou , 310058 Zhejiang , China.

Gold nanoparticles (AuNPs) are promising photothermal agents for cancer therapy. However, the absorption of spherical AuNPs is weak in the desired tissue-penetrating near-infrared (NIR) window, resulting in low photothermal efficiency within this window. Here, we show that fibrous nanostructures assembled from spherical AuNPs since the templating effect of silk fibroin (SF) could red-shift the optical absorption to NIR and thus present improved photothermal efficiency within the NIR window. Read More

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http://dx.doi.org/10.1021/acsami.8b21488DOI Listing
March 2019
3 Reads

Geometric Occupancy and Oxidation State Requirements of Cations in Cobalt Oxides for Oxygen Reduction Reaction.

ACS Appl Mater Interfaces 2019 Apr 25;11(13):12525-12534. Epub 2019 Mar 25.

Nanomaterial & Electrocatalysis Laboratory, College of Materials Science and Engineering , Qingdao University of Science and Technology , 53 Zhengzhou Road , 266042 Qingdao , China.

Cobalt oxides, including spinel CoO and rock-salt CoO, have been widely reported as promising catalysts for oxygen reduction reaction (ORR). However, three types of cobalt ions, i.e. Read More

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http://dx.doi.org/10.1021/acsami.9b00481DOI Listing
April 2019
1 Read

An Expanded Synthetic Biology Toolkit for Gene Expression Control in Acetobacteraceae.

ACS Synth Biol 2019 Mar 22. Epub 2019 Mar 22.

School of Chemical and Biomedical Engineering , Nanyang Technological University , 637459 Singapore.

The availability of different host chassis will greatly expand the range of applications in synthetic biology. Members of the Acetobacteraceae family of Gram-negative bacteria form an attractive class of nonmodel microorganisms that can be exploited to produce industrial chemicals, food and beverage, and biomaterials. One such biomaterial is bacterial cellulose, which is a strong and ultrapure natural polymer used in tissue engineering scaffolds, wound dressings, electronics, food additives, and other products. Read More

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http://dx.doi.org/10.1021/acssynbio.8b00168DOI Listing
March 2019
2 Reads

Microgels Adsorbed at Liquid-Liquid Interfaces: A Joint Numerical and Experimental Study.

ACS Nano 2019 Mar 19. Epub 2019 Mar 19.

CNR Institute for Complex Systems, Uos Sapienza , Piazzale Aldo Moro 2 , 00185 Roma , Italy.

Soft particles display highly versatile properties with respect to hard colloids and even more so at fluid-fluid interfaces. In particular, microgels, consisting of a cross-linked polymer network, are able to deform and flatten upon adsorption at the interface due to the balance between surface tension and internal elasticity. Despite the existence of experimental results, a detailed theoretical understanding of this phenomenon is still lacking due to the absence of appropriate microscopic models. Read More

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http://dx.doi.org/10.1021/acsnano.9b00390DOI Listing

SERS-Based Pump-Free Microfluidic Chip for Highly Sensitive Immunoassay of Prostate-Specific Antigen Biomarkers.

ACS Sens 2019 Mar 22. Epub 2019 Mar 22.

School of Materials Science and Engineering , Hefei University of Technology , Hefei 230009 , China.

Highly sensitive analysis of cancer biomarkers demonstrates an important impact in early diagnosis and therapies of cancer. A novel surface-enhanced Raman scattering (SERS) based immunoassay using microfluidic technique was reported for rapid analysis of prostate-specific antigen (PSA) biomarker. It is a useful screening test to discriminate prostate cancer and other diseases related to prostate. Read More

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http://dx.doi.org/10.1021/acssensors.9b00039DOI Listing
March 2019
2 Reads

Hand-in-Hand Reinforced rGO Film Used as an Auxiliary Functional Layer for High-Performance Li-S Batteries.

ACS Appl Mater Interfaces 2019 Apr 25;11(13):12544-12553. Epub 2019 Mar 25.

Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing 100081 , China.

For lithium-sulfur (Li-S) batteries, a promising candidate for future high-energy storage devices, several prominent problems still need to be solved urgently, such as limited rate capability and poor cycle life caused by the insulating nature of sulfur and the shuttle of soluble polysulfides produced during battery operation. In this work, a facile vacuum filtration method is employed to graft polyethyleneimine to reduced graphene oxide (rGO) in a "hand-in-hand" way using the amino and catechol groups from polydopamine. The resulting polymer-reinforced rGO (PPG) film is applied as a free-standing auxiliary functional layer for Li-S batteries. Read More

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http://dx.doi.org/10.1021/acsami.9b00845DOI Listing