303 results match your criteria material fet

Biosensing platforms based on silicon nanostructures: A critical review.

Anal Chim Acta 2021 May 13;1160:338393. Epub 2021 Mar 13.

CNR-IPCF, Istituto per I Processi Chimico-Fisici, Viale F. Stagno D'Alcontres 37, 98158, Messina, Italy. Electronic address:

Biosensors are revolutionizing the health-care systems worldwide, permitting to survey several diseases, even at their early stage, by using different biomolecules such as proteins, DNA, and other biomarkers. However, these sensing approaches are still scarcely diffused outside the specialized medical and research facilities. Silicon is the undiscussed leader of the whole microelectronics industry, and novel sensors based on this material may completely change the health-care scenario. Read More

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Post-CMOS Compatible Aluminum Scandium Nitride/2D Channel Ferroelectric Field-Effect-Transistor Memory.

Nano Lett 2021 Apr 21. Epub 2021 Apr 21.

Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.

Recent advances in oxide ferroelectric (FE) materials have rejuvenated the field of low-power, nonvolatile memories and made FE memories a commercial reality. Despite these advances, progress on commercial FE-RAM based on lead zirconium titanate has stalled due to process challenges. The recent discovery of ferroelectricity in scandium-doped aluminum nitride (AlScN) presents new opportunities for direct memory integration with logic transistors due to the low temperature of AlScN deposition (approximately 350 °C), making it compatible with back end of the line integration on silicon logic. Read More

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A review of BioFET's basic principles and materials for biomedical applications.

Biomed Eng Lett 2021 Apr 9:1-12. Epub 2021 Apr 9.

School of Biomedical Engineering, Korea University, Seoul, 02841 Republic of Korea.

Interest in biomolecular sensors for diagnosis of early diseases and prognosis of the diseases is increasing day by day. Among them, FET-based sensors are very useful in that of their versatile operating characteristics using various materials. Herein, after addressing the basic principles of BioFET, we conduct an overall review of BioFET on two of the main structural elements: transducing materials and probes. Read More

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High mobility field-effect transistors based on MoS2 crystal grown by the flux method.

Nanotechnology 2021 Apr 12. Epub 2021 Apr 12.

School of Electronic and Electrical Engineering, Sungkyunkwan University, 300 Chun chun dong, Jangan - gu, Suwon-city 440-746, KOREA, Suwon, Korea (the Republic of).

Two-dimensional (2D) molybdenum disulphide (MoS2) transition metal chalcogenides (TMDs) have great potential in optical and electronic device applications; however, the performance of MoS2 is limited by its crystal quality, which serves as a measure of defects and grain boundaries in the grown material. Therefore, high-quality growth of MoS2 crystals continues to be a critical issue. In this context, we propose the formation of high-quality MoS2 crystals via flux method. Read More

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On the feasibility of hearing electrons in a 1D device through emitted phonons.

Sci Rep 2021 Mar 9;11(1):5452. Epub 2021 Mar 9.

Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, USA.

This work investigates the vibrational power that may potentially be delivered by electron-emitted phonons at the terminals of a device with a 1D material as the active channel. Electrons in a 1D material traversing a device excite phase-limited acoustic and optical phonon modes as they undergo streaming motion. At ultra-low temperature (4 K in this study, for example), in the near absence of background phonon activity, the emitted traveling phonons may potentially be collected at the terminals before they decay. Read More

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MXene-Graphene Field-Effect Transistor Sensing of Influenza Virus and SARS-CoV-2.

ACS Omega 2021 Mar 2;6(10):6643-6653. Epub 2021 Mar 2.

Department of Civil, Architectural, and Environmental Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, United States.

An MXene-graphene field-effect transistor (FET) sensor for both influenza virus and 2019-nCoV sensing was developed and characterized. The developed sensor combines the high chemical sensitivity of MXene and the continuity of large-area high-quality graphene to form an ultra-sensitive virus-sensing transduction material (VSTM). Through polymer linking, we are able to utilize antibody-antigen binding to achieve electrochemical signal transduction when viruses are deposited onto the VSTM surface. Read More

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Artificial Sub-60 Millivolts/Decade Switching in a Metal-Insulator-Metal-Insulator-Semiconductor Transistor without a Ferroelectric Component.

ACS Nano 2021 Mar 11;15(3):5158-5164. Epub 2021 Mar 11.

Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States.

Negative capacitance field-effect transistors (NC-FETs) have attracted wide interest as promising candidates for steep-slope devices, and sub-60 millivolts/decade (mV/decade) switching has been demonstrated in NC-FETs with various device structures and material systems. However, the detailed mechanisms of the observed steep-slope switching in some of these experiments are under intense debate. Here we show that sub-60 mV/decade switching can be observed in a WS transistor with a metal-insulator-metal-insulator-semiconductor (MIMIS) structure without any ferroelectric component. Read More

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Enhanced Electrical Properties of Lithography-Free Fabricated MoS Field Effect Transistors with Chromium Contacts.

J Phys Chem Lett 2021 Mar 11;12(11):2705-2711. Epub 2021 Mar 11.

Department of Materials Science, Fudan University, Shanghai 200433, P.R. China.

Molybdenum disulfide (MoS) as a two-dimensional semiconductor material has been actively explored for field-effect-transistors (FETs). The current prevailing method for MoS FET fabrication involves multiple complex steps, including electron beam (e-beam) lithography, annealing, ., which are time-consuming and require polymer resists. Read More

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An ultrasensitive heart-failure BNP biosensor using B/N co-doped graphene oxide gel FET.

Biosens Bioelectron 2021 May 26;180:113114. Epub 2021 Feb 26.

Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON, Canada; Waterloo Institute for Nanotechnology (WIN), University of Waterloo, Waterloo, ON, Canada.

Heart failure (HF) is the number one cause of death in the world. B-type natriuretic peptide (BNP) is a recognized biomarker for HF and can be used for early detection. Field effect transistor (FET) biosensors have the ability to sense BNP in much shorter times than conventional clinical studies. Read More

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The effect of diagnostic hysteroscopy performed before fresh and frozen-thawed embryo transfer in IVF cycles on the reproductive outcomes

J Turk Ger Gynecol Assoc 2021 03 5. Epub 2021 Mar 5.

Department of Obstetrics and Gynecology, Acıbadem Mehmet Ali Aydınlar University Faculty of Medicine, İstanbul, Turkey

Objective: Hysteroscopy is frequently performed in infertile women and thought to improve pregnancy rates. The data obtained from studies searching the effect of hysteroscopy in in-vitro fertilization (IVF) cycles is variable. We aimed to evaluate the effect of hysteroscopy on the pregnancy outcomes of fresh and frozen-thawed embryo transfers done in the IVF cycles respectively. Read More

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Effects of TiN Top Electrode Texturing on Ferroelectricity in HfZrO.

ACS Appl Mater Interfaces 2021 Mar 24;13(9):11089-11095. Epub 2021 Feb 24.

Electrical and Information Technology, Lund University, Box 118, 22 100 Lund, Sweden.

Ferroelectric memories based on hafnium oxide are an attractive alternative to conventional memory technologies due to their scalability and energy efficiency. However, there are still many open questions regarding the optimal material stack and processing conditions for reliable device performance. Here, we report on the impact of the sputtering process conditions of the commonly used TiN top electrode on the ferroelectric properties of HfZrO. Read More

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Preparation of Biological Scaffolds and Primary Intestinal Epithelial Cells to Efficiently 3D Model the Fish Intestinal Mucosa.

Methods Mol Biol 2021 ;2273:263-278

Department of Agricultural and Environmental Sciences-Production, Landscape, Agroenergy, Center for Stem Cell Research, Università degli Studi di Milano, Milan, Italy.

Tissue engineering is an elegant tool to create organs in vitro, that can help obviate the lack of organ donors in transplantation medicine and provide the opportunity of studying complex biological systems in vitro, thereby reducing the need for animal experiments. Artificial intestine models are at the core of Fish-AI, an EU FET-Open research project dedicated to the development of a 3D in vitro platform that is intended to enable the aquaculture feed industry to predict the nutritional and health value of alternative feed sources accurately and efficiently.At present, it is impossible to infer the health and nutrition value through the chemical characterization of any given feed. Read More

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Tip-Based Cleaning and Smoothing Improves Performance in Monolayer MoS Devices.

ACS Omega 2021 Feb 1;6(5):4013-4021. Epub 2021 Feb 1.

Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.

Two-dimensional (2D) materials and heterostructures are promising candidates for nanoelectronics. However, the quality of material interfaces often limits the performance of electronic devices made from atomically thick 2D materials and heterostructures. Atomic force microscopy (AFM) tip-based cleaning is a reliable technique to remove interface contaminants and flatten heterostructures. Read More

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February 2021

Terahertz Spin-to-Charge Conversion by Interfacial Skew Scattering in Metallic Bilayers.

Adv Mater 2021 Mar 27;33(9):e2006281. Epub 2021 Jan 27.

Department of Physics, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany.

The efficient conversion of spin to charge transport and vice versa is of major relevance for the detection and generation of spin currents in spin-based electronics. Interfaces of heterostructures are known to have a marked impact on this process. Here, terahertz (THz) emission spectroscopy is used to study ultrafast spin-to-charge-current conversion (S2C) in about 50 prototypical F|N bilayers consisting of a ferromagnetic layer F (e. Read More

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The effects of cesium lead bromide quantum dots on the performance of copper phthalocyanine-based organic field-effect transistors.

Nanotechnology 2021 May;32(19):195208

Molecular Electronics Research Laboratory, Physics Department, Faculty of Science, University of Allahabad, Prayagraj-211 002, India.

Highly luminescent all-inorganic cesium lead bromide (CsPbBr) perovskite quantum dots (QDs) have been extensively used as a photosensitizer in optoelectronic devices, while p-type small-organic-molecule copper phthalocyanine (CuPc) is also widely used as a photoactive material in solar cells, organic field-effect transistors (OFETs), etc. In this paper, we report the preparation of a CsPbBr-QDs/CuPc heterostructure to study the effect of CsPbBr-QDs on CuPc. The optical properties of both CuPc and the QDs/CuPc heterostructure were compared and contrasted using UV-vis absorbance and photoluminescence (PL) measurements. Read More

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Diode-Like Current Leakage and Ferroelectric Switching in Silicon SIS Structures with Hafnia-Alumina Nanolaminates.

Nanomaterials (Basel) 2021 Jan 22;11(2). Epub 2021 Jan 22.

Valiev Institute of Physics and Technology RAS, 117218 Moscow, Russia.

Silicon semiconductor-insulator-semiconductor (SIS) structures with high-k dielectrics are a promising new material for photonic and CMOS integrations. The "diode-like" currents through the symmetric atomic layer deposited (ALD) HfO/AlO/HfO… nanolayers with a highest rectification coefficient 10 are observed and explained by the asymmetry of the upper and lower heterointerfaces formed by bonding and ALD processes. As a result, different spatial charge regions (SCRs) are formed on both insulator sides. Read More

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January 2021

Understanding ambipolar transport in MoS field effect transistors: the substrate is the key.

Nanotechnology 2021 Jan 7;32(13):135202. Epub 2021 Jan 7.

Department of Materials Engineering (MTM), KU Leuven, Belgium. IMEC, Kapeldreef 75, Leuven, Belgium.

2D materials offer a pathway for further scaling of CMOS technology. However, for this to become a reality, both n-MOS and p-MOS should be realized, ideally with the same (standard) material. In the specific case of MoS field effect transistors (FETs), ambipolar transport is seldom reported, primarily due to the phenomenon of Fermi level pinning (FLP). Read More

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January 2021

A Universal Fe/N Incorporated Graphdiyne for Printing Flexible Ferromagnetic Semiconducting Electronics.

J Phys Chem Lett 2021 Jan 16;12(1):204-210. Epub 2020 Dec 16.

Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.

The vigorous development of two-dimensional materials puts forward higher requirements for more effective modulation of physical properties. Here, we utilize simple treatments for the emerging graphdiyne (GDY) materials to achieve dual control of magnetic and electrical properties through Fe/N codoping. The as-prepared Fe-N-GDY is confirmed as a highly conductive ferromagnetic semiconductor. Read More

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January 2021

Degradation evaluation and toxicity profile of bilobol, a promising eco-friendly larvicide.

Chemosphere 2021 Jan 16;263:128323. Epub 2020 Sep 16.

Universidade de Brasília, Laboratório de Farmacognosia, Campus Universitário Darcy Ribeiro, 70910-900, Brasília, DF, Brazil. Electronic address:

Aedes aegypti is the main arbovirus vector transmitting chikungunya, Zika and dengue. The current vector control strategies are limited due to multiple insecticide resistance, deleterious impacts on the environment, and toxicity to non-target organisms. Bilobol, an alkylresorcinol isolated from the plant species Schinus terebinthifolia, demonstrated larvicidal activity against Aedes aegypti (LC 7. Read More

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January 2021

Non-Invasive Prediction of Mutation in Patients with Glioma WHO II/III/IV Based on F-18-FET PET-Guided In Vivo H-Magnetic Resonance Spectroscopy and Machine Learning.

Cancers (Basel) 2020 Nov 17;12(11). Epub 2020 Nov 17.

Department of Neurology and Wilhelm Sander-NeuroOncology Unit, Regensburg University Hospital, 93053 Regensburg, Germany.

( mutation is an important prognostic factor and a potential therapeutic target in glioma. Immunohistological and molecular diagnosis of mutation status is invasive. To avoid tumor biopsy, dedicated spectroscopic techniques have been proposed to detect D-2-hydroxyglutarate (2-HG), the main metabolite of , directly in vivo. Read More

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November 2020

Coherent Electron Transport in Air-Stable, Printed Single-Crystal Organic Semiconductor and Application to Megahertz Transistors.

Adv Mater 2020 Dec 16;32(50):e2003245. Epub 2020 Nov 16.

Material Innovation Research Center and Department of Advanced Materials Science, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan.

Organic semiconductors (OSCs) have attracted growing attention for optoelectronic applications such as field-effect transistors (FETs), and coherent (or band-like) carrier transport properties in OSC single crystals (SCs) have been of interest as they can lead to high carrier mobilities. Recently, such p-type OSC SCs compatible with a printing technology have been used to achieve high-speed FETs; therefore, developments of n-type counterparts may be promising for realizing high-speed complementary organic circuits. Herein, coherent electron transport properties in a printed SC of a state-of-the-art, air-stable n-type OSC, PhC -BQQDI, by means of variable-temperature gated Hall effect measurements and X-ray single-crystal diffraction analyses in conjunction with band structure calculations, are reported. Read More

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December 2020

Environmental Impact of Food Packaging Materials: A Review of Contemporary Development from Conventional Plastics to Polylactic Acid Based Materials.

Materials (Basel) 2020 Nov 6;13(21). Epub 2020 Nov 6.

Botswana Institute for Technology Research and Innovation (BITRI), Private Bag 0082, Gaborone, Botswana.

Plastics have remained the material of choice, and after serving their intended purpose, a large proportion ends up in the environment where they persist for centuries. The packaging industry is the largest and growing consumer of synthetic plastics derived from fossil fuels. Food packaging plastics account for the bulk of plastic waste that are polluting the environment. Read More

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November 2020

Reliable and highly sensitive biosensor from suspended MoS atomic layer on nano-gap electrodes.

Biosens Bioelectron 2021 Jan 17;172:112724. Epub 2020 Oct 17.

Department of Mechanical Engineering, Wayne State University, Detroit, MI, 48202, USA. Electronic address:

The uneven morphology and the trapped charges at the surface of the traditionally used supporting substrate-based 2D biosensors produces a scattering effect, which leads to a irregular signals from individually fabricated devices. Though suspended 2D channel material has the potential to overcome scattering effects from the substrates but achieving reliability and selectivity, have been limiting the using of this biosensor technology. Here, we have demonstrated nanogap electrodes fabrication by using the self-assembly technique, which provides suspension to the 2D-MoS. Read More

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January 2021

Higher efficiency of frozen embryo transfer in male infertility cases in in vitro fertilization.

Turk J Urol 2019 Dec 1;45(Supp. 1):S7-S12. Epub 2019 Dec 1.

Department of Obstetrics and Gynecology, Çukurova University School of Medicine, Balcalı Hospital, Adana, Turkey.

Objective: The aim of the present study was to analyze the success rates of frozen and fresh embryo transfer methods in different patient groups.

Material And Methods: The study included 453 patients who underwent in vitro fertilization (IVF) treatment. The patients were further divided into three groups as male factor, tubal/ovarian/uterine factor, and other factors. Read More

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December 2019

A Novel Dopingless Fin-Shaped SiGe Channel TFET with Improved Performance.

Nanoscale Res Lett 2020 Oct 17;15(1):202. Epub 2020 Oct 17.

School of Microelectronics, Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices of Education, Xidian University, Xi'an, 710071, China.

In this paper, a dopingless fin-shaped SiGe channel TFET (DF-TFET) is proposed and studied. To form a high-efficiency dopingless line tunneling junction, a fin-shaped SiGe channel and a gate/source overlap are induced. Through these methods, the DF-TFET with high on-state current, switching ratio of 12 orders of magnitude and no obvious ambipolar effect can be obtained. Read More

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October 2020

A Highly Sensitive FET-Type Humidity Sensor with Inkjet-Printed Pt-InO Nanoparticles at Room Temperature.

Nanoscale Res Lett 2020 Oct 14;15(1):198. Epub 2020 Oct 14.

Department of Electrical and Computer Engineering and Inter-University Semiconductor Research Center, Seoul National University, Seoul, 151-742, Republic of Korea.

In this work, Pt-doped InO nanoparticles (Pt-InO) were inkjet printed on a FET-type sensor platform that has a floating gate horizontally aligned with a control gate for humidity detection at room temperature. The relative humidity (RH)-sensing behavior of the FET-type sensor was investigated in a range from 3.3 (dry air in the work) to about 18%. Read More

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October 2020

Biosensing based on field-effect transistors (FET): Recent progress and challenges.

Trends Analyt Chem 2020 Dec 9;133:116067. Epub 2020 Oct 9.

Biologically Inspired Sensors and Actuators (BioSA), Faculty of Science, Dept. of Biology, York University, Toronto, Canada.

The use of field-Effect-Transistor (FET) type biosensing arrangements has been highlighted by researchers in the field of early biomarker detection and drug screening. Their non-metalized gate dielectrics that are exposed to an electrolyte solution cover the semiconductor material and actively transduce the biological changes on the surface. The efficiency of these novel devices in detecting different biomolecular analytes in a real-time, highly precise, specific, and label-free manner has been validated by numerous research studies. Read More

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December 2020

[Hybrid aortic repair in patients with type III aortic dissection and concomitant proximal aortic lesion].

Khirurgiia (Mosk) 2020 (9):28-37

Petrovsky National Research Centre of Surgery, Moscow, Russia.

Objective: To report our own experience of hybrid treatment using FET technique in patients with type A aortic dissection and concomitant lesion of aortic arch and ascending aorta.

Material And Methods: There were 90 (28,3%) FET procedures for the period from January 2010 to August 2019. Type B aortic dissection was diagnosed in 19 (45,2%) patients. Read More

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October 2020

Recent developments in graphene based field effect transistors.

Mater Today Proc 2020 Sep 21. Epub 2020 Sep 21.

Department of Electronics and Communication Engineering, Koneru Lakshmaiah Education Foundation, Guntur 522502, Andhra Pradesh, India.

This paper presents a comprehensive survey on the recent developments in Graphene Field Effect Transistor (G-FET), considering various aspects such as fabrication, modelling and simulation tools and applications especially in sensors, highlighting the future directions. Complying with the Moore's law, to increase the transistor density of an Integrated Circuit, new alternate materials for fabrication have been tried, instead of silicon due to its limitations in reducing transistor dimensions. Graphene, one such material, proves to be a suitable alternate for silicon due to the factors like superior carrier mobility and very high -conductance gain, etc and G-FET is becoming the most suitable choice for high-speed analog VLSI, RF, and bio- sensor circuits. Read More

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September 2020

Proposition of deposition and bias conditions for optimal signal-to-noise-ratio in resistor- and FET-type gas sensors.

Nanoscale 2020 Oct 23;12(38):19768-19775. Epub 2020 Sep 23.

Department of Electrical and Computer Engineering and Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea.

In the field of gas sensor studies, most researchers are focusing on improving the response of the sensors to detect a low concentration of gas. However, factors that make a large response, such as abundant or strong adsorption sites, also work as a source of noise, resulting in a trade-off between response and noise. Thus, the response alone cannot fully evaluate the performance of sensors, and the signal-to-noise-ratio (SNR) should additionally be considered to design gas sensors with optimal performance. Read More

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October 2020