120 results match your criteria mode interconnection

Inverse-designed ultra-compact high efficiency and low crosstalk optical interconnect based on waveguide crossing and wavelength demultiplexer.

Sci Rep 2021 Jun 18;11(1):12842. Epub 2021 Jun 18.

Guangxi Key Laboratory of Multimedia Communications and Network Technology, School of Computer, Electronics and Information, Guangxi University, Nanning, 530004, China.

In this paper, we use the inverse design method to design an optical interconnection system composed of wavelength demultiplexer and the same direction waveguide crossing on silicon-on-insulator (SOI) platform. A 2.4 μm × 3. Read More

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Low loss and high performance interconnection between standard single-mode fiber and antiresonant hollow-core fiber.

Sci Rep 2021 Apr 22;11(1):8799. Epub 2021 Apr 22.

Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ, UK.

We demonstrate halving the record-low loss of interconnection between a nested antiresonant nodeless type hollow-core fiber (NANF) and standard single-mode fiber (SMF). The achieved interconnection loss of 0.15 dB is only 0. Read More

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Polar coded probabilistic shaping PAM8 based on many-to-one mapping for short-reach optical interconnection.

Opt Express 2021 Mar;29(7):10209-10220

In this paper, a polar coded probabilistic shaping (PS) 8-ary pulse amplitude modulation (PAM8) based on many-to-one (MTO) mapping is investigated for short-reach optical interconnection. By ingeniously assigning parity bits to ambiguities positions, no extra PS redundancy and no complex distribution matcher are required in the scheme comparing to traditional probabilistic amplitude shaping (PAS). The noise distributions after different transmission distances are studied and an optimal clock recovery method for PS signal is proposed to degrade the impact of severe eye skew effect on BER performance. Read More

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Experimentally measuring the mode indices of Laguerre-Gaussian beams by weak measurement.

Opt Express 2021 Feb;29(4):5419-5426

As a special experimental technique, weak measurements extract very little information from the measured system and does not cause the measured state to collapse. When coupling the Laguerre-Gaussian (LG) state with a well-defined pre- and post-selected system of a weak measurement process, there will be an indirect interconnection between the expected value of coordinate operators of the final state and the mode indices of the measured LG state. The mode of the light is impacted very slightly after the weak measurement. Read More

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February 2021

Monolithically integrated voltage-controlled MOSFET-LED device based on a GaN-on-silicon LED epitaxial wafer.

Opt Lett 2021 Feb;46(4):745-748

We report a novel monolithically integrated voltage-controlled metal-oxide-semiconductor field effect transistor (MOSFET)-LED device based on a GaN-on-silicon LED epitaxial wafer. An N-channel enhancement mode MOSFET and an InGaN/GaN multiple-quantum-well (MQW) thin-film LED featured with a suspended membrane are in series connection to constitute the monolithically integrated device without external metal interconnection. A recessed gate structure and AlGaN channel are innovatively adopted to realize an enhancement mode transistor. Read More

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February 2021

Analysis of Heart rate Variability and Implication of Different Factors on Heart Rate Variability.

Curr Cardiol Rev 2020 Dec 31. Epub 2020 Dec 31.

Department of Clinical Immunology, Allergology and Microbiology, Karaganda Medical University, Karaganda,. Kazakhstan.

Background: The heart is the central organ of the circulatory system which maintains the flow of blood along with the transport of nutrients to different cells and tissues. A well-functioning cardiac state is a complicated mode of changeability. A healthy heart is not only about oscillation as the rhythmometer is not the same in every circumstance. Read More

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December 2020

Improved polar decoding for optical PAM transmission via non-identical Gaussian distribution based LLR estimation.

Opt Express 2020 Dec;28(26):38456-38464

In this paper, an improved polar decoder based on non-identical Gaussian distributions is proposed and experimentally demonstrated for optical pulse amplitude modulation (PAM) interconnection. The principle of the polar coded PAM system is illustrated theoretically and the non-identical Gaussian distributions based log-likelihood ratio (LLR) estimation is introduced in the polar decoder to mitigate nonlinearity. Transmission systems of 28-Gbaud 4-level pulse amplitude modulation (PAM-4) and 8-level pulse amplitude modulation (PAM-8) based on commercial 10-GHz directly modulated laser (DML) are both demonstrated over 10-km standard single-mode fiber (SSMF) in C-band without dispersion compensation. Read More

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December 2020

Robustness of Internet of Battlefield Things (IoBT): A Directed Network Perspective.

Entropy (Basel) 2020 Oct 16;22(10). Epub 2020 Oct 16.

College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.

Through the combination of various intelligent devices and the Internet to form a large-scale network, the Internet of Things (IoT) realizes real-time information exchange and communication between devices. IoT technology is expected to play an essential role in improving the combat effectiveness and situation awareness ability of armies. The interconnection between combat equipment and other battlefield resources is referred to as the Internet of Battlefield Things (IoBT). Read More

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October 2020

A parametric two-mode vibronic model of a dimeric mixed-valence cell for molecular quantum cellular automata and computational verification.

Phys Chem Chem Phys 2020 Nov;22(44):25982-25999

Laboratory of Molecular Magnetic Nanomaterials, Institute of Problems of Chemical Physics, Academician Semenov Avenue 1, Chernogolovka, Moscow Region 142432, Russian Federation.

In this article we propose a two-mode vibronic model of a molecular cell for quantum cellular automata. The molecular cell is represented by a mixed-valence dimeric cluster in which the mobile electron is coupled to two kinds of molecular vibrations. The first type of vibration is represented by the so-called "breathing" modes localized on the redox sites, which are traditionally considered within the Piepho, Krausz and Schatz vibronic model as a source of the trapping effect. Read More

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November 2020

Anti-Influenza Activity of the Ribonuclease Binase: Cellular Targets Detected by Quantitative Proteomics.

Int J Mol Sci 2020 Nov 5;21(21). Epub 2020 Nov 5.

Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kazan, Russia.

Unpredictable influenza pandemics, annual epidemics, and sporadic poultry-to-human avian influenza virus infections with high morbidity and mortality rates dictate a need to develop new antiviral approaches. Targeting cellular pathways and processes is a promising antiviral strategy shown to be effective regardless of viral subtypes or viral evolution of drug-resistant variants. Proteomics-based searches provide a tool to reveal the druggable stages of the virus life cycle and to understand the putative antiviral mode of action of the drug(s). Read More

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November 2020

Silicon-integrated dual-mode fiber-to-chip edge coupler for 2 × 100 Gbps/lambda MDM optical interconnection.

Opt Express 2020 Oct;28(22):33254-33262

In this work, a silicon-integrated edge coupler supporting dual-mode fiber-to-chip coupling was designed and fabricated on 220-nm-thick SOI wafer with standard CMOS-compatible fabrication process. The proposed low-complexity structure consists of a multimode interference and triple-tip inverse taper. Both LP and LP modes in the few mode fiber (FMF) can be stimulated simultaneously by the edge coupler from TE and TE modes in silicon waveguide. Read More

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October 2020

Microstructure-Based Fiber-To-Chip Coupling of Polymer Planar Bragg Gratings for Harsh Environment Applications.

Sensors (Basel) 2020 Sep 23;20(19). Epub 2020 Sep 23.

Applied Laser and Photonics Group, Aschaffenburg University of Applied Sciences, Wuerzburger Strasse 45, 63743 Aschaffenburg, Germany.

This article proposes and demonstrates a robust microstructure-based fiber-to-chip coupling scheme for planar Bragg grating devices. A polymer planar Bragg grating substrate is manufactured and microstructured by means of a micromilling process, while the respective photonic structures are generated by employing a sophisticated single-writing UV-exposure method. A stripped standard single mode fiber is inserted into the microstructure, which is filled with a UV-curable adhesive, and aligned with the integrated waveguide. Read More

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September 2020

Computational prediction of miRNA/mRNA duplexomes at the whole human genome scale reveals functional subnetworks of interacting genes with embedded miRNA annealing motifs.

Comput Biol Chem 2020 Oct 22;88:107366. Epub 2020 Aug 22.

Université Côte d'Azur, INRAE, CNRS, ISA, France.

Perfect annealing between microRNAs (miRNAs) and messenger RNAs (mRNAs) was computationally searched at a broad scale in the human genome to determine whether theoretical pairing is restrictively represented in functional subnetworks or is randomly distributed. Massive RNA interference (RNAi) pairing motifs in genes constitute a remarkable subnetwork that displays highly genetically and biochemically interconnected genes. These analyses show unexpected repertoires of genes defined by their congruence in comatching with miRNAs at numerous sites and by their interconnection based on protein/protein interactions or proteins regulating the activity of others. Read More

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October 2020

Fabrication and transmission of optical polymer waveguide backplane for high - performance computers.

Opt Express 2020 May;28(10):14605-14617

In this paper, a high-speed, large-capacity and compact optical backplane architecture for high-performance computers (HPC) is proposed and designed. The MT couplers is designed without additional mirror to divert the light from vertical cavity surface emitting laser (VCSEL) array by 90°. The light is then coupled into the optical waveguide through the MT. Read More

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Vector Vortex Beam Emitter Embedded in a Photonic Chip.

Phys Rev Lett 2020 Apr;124(15):153601

Center for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China.

Vector vortex beams simultaneously carrying spin and orbital angular momentum of light promise additional degrees of freedom for modern optics and emerging resources for both classical and quantum information technologies. The inherently infinite dimensions can be exploited to enhance data capacity for sustaining the unprecedented growth in big data and internet traffic and can be encoded to build quantum computing machines in high-dimensional Hilbert space. So far, much progress has been made in the emission of vector vortex beams from a chip surface into free space; however, the generation of vector vortex beams inside a photonic chip has not been realized yet. Read More

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Sandwich-like Catalyst-Carbon-Catalyst Trilayer Structure as a Compact 2D Host for Highly Stable Lithium-Sulfur Batteries.

Angew Chem Int Ed Engl 2020 Jul 18;59(29):12129-12138. Epub 2020 May 18.

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He Shuo Road, Shanghai, 201899, China.

Herein, we propose the construction of a sandwich-structured host filled with continuous 2D catalysis-conduction interfaces. This MoN-C-MoN trilayer architecture causes the strong conformal adsorption of S/Li S and its high-efficiency conversion on the two-sided nitride polar surfaces, which are supplied with high-flux electron transfer from the buried carbon interlayer. The 3D self-assembly of these 2D sandwich structures further reinforces the interconnection of conductive and catalytic networks. Read More

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Monolithic Plasmonic Waveguide Architecture for Passive and Active Optical Circuits.

Nano Lett 2020 May 31;20(5):2950-2957. Epub 2020 Mar 31.

Department of Electrical and Computer Engineering, University of Toronto, Ontario, Canada.

Guided-wave plasmonic circuits are promising platforms for sensing, interconnection, and quantum applications in the subdiffraction regime. Nonetheless, the loss-confinement trade-off remains a collective bottleneck for plasmonic-enhanced optical processes. Here, we report a unique plasmonic waveguide architecture that can alleviate such trade-off and improve the efficiencies of plasmonic-based emission, light-matter-interaction, and detection simultaneously. Read More

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Bipartite Gaussian quantum steering, entanglement, and discord and their interconnection via a parametric down-converter.

Appl Opt 2020 Mar;59(9):2701-2708

In this study, we quantify quantum steering, quantum entanglement, and quantum discord and their interconnection using the technique of parametric down-conversion. Initially, two single-mode Gaussian states together with a non-linear crystal in a cavity are considered. The behavior of the three kinds of quantum correlations depend on the phase of the coherent pump field, purity, and non-classicality of the input states, and the damping rates of the cavity. Read More

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Piezoelectric Transducers for Structural Health Monitoring of Joint Structures in Cylinders: A Wave-Based Design Approach.

Sensors (Basel) 2020 Jan 21;20(3). Epub 2020 Jan 21.

School of Energy and Power Engineering, Beihang University, Beijing 100191, China.

Joint structures, such as riveting, hinges, and flanges, are widely used in complex mechanical systems. A small unexpected change of a joint can lead to complicated wave-scattering in its connected waveguides. The conversion between wave modes can be used to quantify the variation of the connection status of joints. Read More

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January 2020

Lasing from reduced dimensional perovskite microplatelets: Fabry-Pérot or whispering-gallery-mode?

J Chem Phys 2019 Dec;151(21):211101

Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China.

Cesium lead bromide (CsPbBr) perovskite has attracted great attention recently for its potentials for next-generation green-color lasing devices owing to the relatively high structural stability and the high emission efficiency among the perovskite family. Herein, we explore the origins of cavity modes in CsPbBr microplatelets (MPs) lasers by using angle-resolved microphotoluminescence Fourier imaging technique, which is still controversial so far. In-plane Fabry-Pérot (F-P) mode lasing transition to whispering-gallery-mode (WGM) lasing is verified at room temperature, which mostly occurs in large MPs with edge length (L) over 13 μm. Read More

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December 2019

Terrestrial organic carbon storage modes based on relationship between soil and lake carbon, China.

J Environ Manage 2019 Nov 9;250:109483. Epub 2019 Sep 9.

Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Center for Hydrologic Cycle and Water Resources in Arid Region, Lanzhou University, China.

Terrestrial ecosystems have received considerable attention as a significant sink for organic carbon at regional to global scales. Previous studies were focused on assessment and quantification of carbon sinks for one ecotype, and few have worked on the interconnection of terrestrial sinks. In this paper, we synthesized the data from China's second national soil survey and direct measurements from 54 lakes. Read More

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November 2019

Inhibitory effects of selected antibiotics on the activities of α-amylase and α-glucosidase: In-vitro, in-vivo and theoretical studies.

Eur J Pharm Sci 2019 Oct 7;138:105040. Epub 2019 Aug 7.

Pharmaceutical Science Research Center, Health Center, Kermanshah University of Medical Sciences, Kermanshah, Iran. Electronic address:

Antibiotics are effective drugs that are used to treat infectious diseases either by killing bacteria or slowing down their growth. The well-adapted structural features of antibiotics for the inhibition/activation of enzymes include several available hydrogen bond (H-bond) acceptors and donors, flexible backbone and hydrophobic nature. The substrates of α-amylase and α-glucosidase, known as key absorbing enzymes, have functional groups (OH groups) rembling antibiotics. Read More

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October 2019

Adaptive Decentralized Neural Network Tracking Control for Uncertain Interconnected Nonlinear Systems With Input Quantization and Time Delay.

IEEE Trans Neural Netw Learn Syst 2020 Apr 11;31(4):1401-1409. Epub 2019 Jul 11.

This study investigates the problem of adaptive decentralized tracking control for a class of interconnected nonlinear systems with input quantization, unknown function, and time-delay, where the time-delay and interconnection terms are supposed to be bounded by some completely unknown functions. An adaptive decentralized tracking controller is constructed via the backstepping method and neural network technique, where a sliding-mode differentiator is presented to estimate the derivative of the virtual control law and reduce the complexity of the control scheme. On the basis of Lyapunov analysis scheme and graph theory, all the signals of the closed-loop system are uniformly ultimately bounded. Read More

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Dipyridamole inhibits α-amylase/α-glucosidase at sub-micromolar concentrations; in-vitro, in-vivo and theoretical studies.

Bioorg Chem 2019 07 6;88:102972. Epub 2019 May 6.

Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran. Electronic address:

Dipyridamole (DP) elevates cyclic Adenosine Monophosphate (cAMP) levels in platelets, erythrocytes, and endothelial cells and also blocks adenosine reuptake. It is used to dilate blood vessels in people with peripheral arterial disease and coronary artery disease (CAD). The flexible backbone, hydrophobic nature, and several available hydrogen bond (H-bond) donors and acceptors are well suited structural features of DP for inhibition/activation of enzymes. Read More

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Cd(ii) coordination polymers constructed from bis(pyridyl) ligands with an asymmetric spacer in chelating mode and diverse organic dicarboxylates: syntheses, structural evolutions and properties.

Dalton Trans 2019 Jun 8;48(22):7589-7601. Epub 2019 May 8.

Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, People's Republic of China.

Self-assembly of diverse Cd(ii) metal salts, four organic dicarboxylic acids, and two flexible bis(pyridyl) ligands leads to the formation of thirteen complexes, namely, [Cd(L1)(CHO)] (1), [Cd(L2)(CHO)]·nOH·8nHO (2), [Cd(L1)(CHO)] (3), [Cd(L1)(CHO)] (4), [Cd(L2)(CHO)(HO)]·nHO (5), [Cd(L1)(m-BDC)(HO)] (6), [Cd(L2)(m-BDC)(HO)] (7), [Cd(L1)(p-BDC)(HO)]·2nHO (8), [Cd(L2)(p-BDC)Cl] (9), [Cd(L2)(p-BDC)(HO)]·n(ClO)·nHO (10), [Cd(L2)(p-BDC)(SO)(HO)]·4nHO (11), [Cd(L2)(p-BDC)]·nHO (12) and [Cd(L2)(p-BDC)]·nMeOH (13) (L1 = N,N'-bis(pyridin-4-ylmethyl)propane-1,2-diamine, L2 = N,N'-bis(pyridin-3-ylmethyl)propane-1,2-diamine, m-BDC = m-benzene dicarboxylate dianion, p-BDC = p-benzene dicarboxylate dianion), which have been characterized by elemental analysis, IR, TG, PL, and powder and single-crystal X-ray diffraction. The influence of different Cd(ii) salts on the structure variations and properties has also been investigated. Complexes 1 and 3 present a (4,4) layer motif accomplished by the interconnection of adjacent Cd(ii) cations through L1 molecules and trans-conformational succinates or fumarates. Read More

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Frequency-resolved adaptive probabilistic shaping for DMT-modulated IM-DD optical interconnects.

Opt Express 2019 Apr;27(9):12241-12254

For decades, advanced modulation techniques have been proposed to increase the capacity for intensity-modulation and direct-detection (IM-DD) optical fiber interconnection systems. Typically, the frequency-resolved discrete multi-tone (DMT) modulation was proposed by loading modulations with different bit numbers to fit the channel's frequency response. Capacity can thus be better improved through finer use of the signal-to-noise-ratio (SNR) distribution in the frequency domain. Read More

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Compact polarization beam splitter assisted by subwavelength grating in triple-waveguide directional coupler.

Appl Opt 2019 Mar;58(9):2264-2268

A polarization beam splitter (PBS) is one of the key components for manipulating different polarization states in the areas of optical interconnection and communication. In this paper, a PBS with two coupling regions using a subwavelength grating (SWG) waveguide as a bridge is proposed and investigated on a 340-nm silicon-on-insulator platform. The PBS is designed with a triple-waveguide directional coupler consisting of two identical silicon waveguides and an SWG waveguide sandwiched between them. Read More

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The Effect of Diluent Mixture with Upper Critical Solution Temperature on Membrane Formation Process, Microstructure, and Performance of PVDF Hollow Fiber Membrane by TIPS Process.

Polymers (Basel) 2018 Jun 30;10(7). Epub 2018 Jun 30.

State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China.

Thermally induced phase separation (TIPS) is a technique to prepare commercial membrane. However, the quick polymer crystallization during the quenching process will bring about a dense and thick skin layer and thus decrease permeability markedly. In this paper, a diluent mixture with upper critical solution temperature (UCST) was used to prepare polyvinylidene fluoride (PVDF) hollow fiber membrane. Read More

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Stretchable, Skin-Attachable Electronics with Integrated Energy Storage Devices for Biosignal Monitoring.

Acc Chem Res 2019 01 26;52(1):91-99. Epub 2018 Dec 26.

Department of Chemical and Biological Engineering , Korea University , 145, Anam-ro , Seongbuk-gu, Seoul 02841 , Republic of Korea.

The demand for novel electronics that can monitor human health, for example, the physical conditions of individuals, during daily life using different techniques from those used in traditional clinic diagnostic facilities is increasing. These novel electronics include stretchable sensor devices that allow various biosignals to be directly measured on human skin without restricting routine activity. The thin, skin-like characteristics of these devices enable stable operation under various deformations, such as stretching, pressing, and rubbing, experienced while attached to skin. Read More

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January 2019

Under a New Light: Regulation of Light-Dependent Pathways by Non-coding RNAs.

Front Plant Sci 2018 26;9:962. Epub 2018 Jul 26.

Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Barcelona, Spain.

The biological relevance of non-protein coding RNAs in the regulation of critical plant processes has been firmly established in recent years. This has been mostly achieved with the discovery and functional characterization of small non-coding RNAs, such as small interfering RNAs and microRNAs (miRNAs). However, recent next-generation sequencing techniques have widened our view of the non-coding RNA world, which now includes long non-coding RNAs (lncRNAs). Read More

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