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Wyniki wyszukiwania dla: graphene field-effect transistor
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Terahertz vision using field effect transistors detectors arrays
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Effect of rotating magnetic field on ferromagnetic structures used in hyperthermia
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The effect of boiling in a thermosyphon on surface tension and contact angle of silica and graphene oxide nanofluids
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Modelling of axial magnetic field effect on electric arc in ablation capillaries
PublikacjaBadano wpływ osiowego pola magnetycznego na łuk elektryczny w kapilarze ablacyjnej o średnicy do 3 mm. Wyniki porównywano z kapilarą ceramiczną. Łuk zasilany był z baterii kondensatorów prądem do około 1200 A. Stosowano pole magnetyczne wolnozmienne oraz wysokoczęstotliwościowe o indukcji do 10 T. Stwierdzono nawet 3-krotny wzrost napięcia łukowego pod wpływem osiowego pola magnetycznego w kapilarze gazującej, przy braku reakcji...
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Silicon field-effect transistors as radiation detectors for the Sub-THz range
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Terahertz imaging with GaAs and GaN plasma field effect transistors detectors
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Effect of pine essential oil and rotating magnetic field on antimicrobial performance
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Study on the Effect of Rotating Magnetic Field on Cellular Response of Mammalian Cells
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Effect of Functionalization of Reduced Graphene Oxide Coatings with Nitrogen and Sulfur Groups on Their Anti-Corrosion Properties
PublikacjaElectrophoretic production of anticorrosion carbonaceous coatings on copper could be successfully performed by anodic oxidation of negatively charged graphene platelets suspended in an aqueous solution. The various platelets were synthesized by Hummer’s method followed by a hydrothermal reduction in the presence of NH4SCN which was expected to substitute some parts of graphene structure with nitrogen and sulfur groups. X-ray photoelectron...
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The Effect of Rotating Magnetic Field on Enterotoxin Genes Expression in Staphylococcus Aureus Strains
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Nonlinear photoresponse of field effect transistors terahertz detectors at high irradiation intensities
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A Terahertz plasma oscillations in nanometer field effect transistors for Terahertz radiation rectification
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Low frequency noise and trap density in GaN/AlGaN field effect transistors
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The effect of groyne field on trapping macroplastic. Preliminary results from laboratory experiments
PublikacjaMacroplastic, a precursor of microplastic pollution, has become a new scope of research interest. However, the physical processes of macroplastic transport and deposition in rivers are poorly understood, which makes the decisions of where to locate macroplastic trapping infrastructure difficult. In this research, we conducted a series of experiments in a laboratory channel, exploring the impact of groynes and flexible artificial...
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Effect of substrate type on the field performance and chemical composition of highbush blueberry cv.Patriot
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The effect of electromagnetic field on reactive oxygen species production in human neutrophilsin vitro
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The effect of a rotating magnetic field on the antioxidant system in healthy volunteers - preliminary study
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Signal-to-noise ratio in terahertz wireless communication using field-effect-transistors as detectors
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The effect of rotating magnetic field on bioethanol production by yeast strain modified by ferrimagnetic nanoparticles
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Effect of GO-Fe3O4 and rotating magnetic field on cellular metabolic activity of mammalian cells
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Stress anisotropy characterisation with the help of Barkhausen effect detector with adjustable magnetic field direction
PublikacjaIn the paper we describe a novel apparatus for the measurement of the Barkhausen noise (BN) angular dependence, which in turn may be indicative of the stress induced anisotropy of magnetic properties. Such dependence can be further used for the stress distribution evaluation. The change of magnetization direction in the material is obtained by varying the magnetic flux density in two perpendicular yokes of the apparatus. We present...
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Sub-THz radiation room temperature sensitivity of long-channel silicon field effect transistors
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Effect of Presowing Magnetic Field Stimulation on the Seed Germination and Growth of Phaseolus vulgaris L. Plants
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Electric field effect on luminescence, and photoconduction in electron donor - electron acceptor organic solid films
PublikacjaZaobserwowano silne wygaszenie fotoluminescencji (80%) i duże fotoprądy (1mA/cm2) w układzie dendrymer aminowy m-MTDATA (donor elektronu) : pochodna fenantroliny BPT (akceptor elektronu) niedomieszkowanym oraz zawierającym domieszkę w postaci organicznego kompleksu platyny PtL2Cl. W interpretacji wyników uwzględniono elektrycznopolową dysocjację singletowych ekscypleksów m-MTDATA:BPT i trypletowych ekscypleksów m-MTDATA : PtL2Cl...
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A1GaN/GaN Field Effect Transistors Based on Lateral Schottky Barrier Gates as Millimeter Wave Detectors
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Study of effect of temperature gradient on solid dissolution process under action of transverse rotating magnetic field
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Experimental and theoretical investigations of the responsivity of field effect transistors based Terahertz detectors versus substrate thickness
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Field Effect Transistors Based Terahertz Detectors 25 Years History, State of the Art and Future Directions
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Effect of substorms in the Earth’s nightside sector on variations in the surface atmospheric electric field at polar and equatorial latitudes
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Enhancing effect of 50 Hz rotating magnetic field on induction of Shiga toxin-converting lambdoid prophages
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Effect of Natural Aging of Biochar on Soil Enzymatic Activity and Physicochemical Properties in Long-Term Field Experiment
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Evaluation the P-Delta Effect on Collapse Capacity of Adjacent Structures Subjected to Far-field Ground Motions
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Local Field Effect in antimony-germanate glasses co-doped with Rare-Earth ions and silver nanoparticles
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Effect of Time Varying Measurement Conditions on Antenna Pattern in Near Field Measurement and Its Correction Procedure
PublikacjaAuthors present the procedure of taking into account the changes of electrical parameters of setup due to the time drift of temperature during the procedure of near field measurement. It is proposed to make additional measurements in determined positions of probe are next used the results to introduce corrections terms in measured data. Such approach was verified practically in experimental near field measurement system.
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Jaroslaw Spychala dr
OsobyOprócz bardzo dobrego wykształcenia osoba posiada również wieloletnie doświadczenie zawodowe, które jest poświadczeniem tego, że potrafi wykorzystać swoją wiedzę teoretyczną w praktycznych działaniach. Doświadczenie zawodowe jest bardzo bogate i rozbudowane. Ze względu na nabyte całkiem nowe umiejętności zwiększa się atrakcyjność doświadczonego pracownika. Są to między innymi kreatywne myślenie, zorientowanie na cel, odporność...
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Double-Quantum-Well AlGaN/GaN Field Effect Transistors with Top and Back Gates: Electrical and Noise Characteristics
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A Supramolecular Approach to Enhance the Optoelectronic Properties of P3HT-b-PEG Block Copolymer for Organic Field-Effect Transistors
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The Effect of Rotating Magnetic Field on Susceptibility Profile of Methicillin-Resistant Staphylococcus aureus Strains Exposed to Activity of Different Groups of Antibiotics
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Horizontally-split-drain MAGFET - a highly sensitive magnetic field sensor
PublikacjaWe propose a novel magnetic field sensitive semiconductor device, viz., Horizontally-Split-Drain Magnetic-Field Sensitive Field-Effect Transistor (HSDMAGFET) which can be used to measure or detect steady or variable magnetic fields. Operating principle of the transistor is based on one of the galvanomagnetic phenomena and a Gradual Channel Detachment Effect (GCDE) and is very similar to that of Popovic and Baltes's SDMAGFET. The...
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Deciphering the Molecular Mechanism of Substrate-Induced Assembly of Gold Nanocube Arrays toward an Accelerated Electrocatalytic Effect Employing Heterogeneous Diffusion Field Confinement
PublikacjaThe complex electrocatalytic performance of gold nanocubes (AuNCs) is the focus of this work. The faceted shapes of AuNCs and the individual assembly processes at the electrode surfaces define the heterogeneous conditions for the purpose of electrocatalytic processes. Topographic and electron imaging demonstrated slightly rounded AuNC (average of 38 nm) assemblies with sizes of ≤1 μm, where the dominating patterns are (111) and...
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A current-controlled FET
PublikacjaA novel semiconductor device, viz., Horizontally-Split-Drain Current-Controlled Field-Effect Transistor (HSDCCFET) with two control electrodes is proposed in this works. For the sake of brevity, the device can be called a CCFET. Operating principle of the proposed transistor is based on one of the galvanomagnetic phenomena, the Biot-Savart-Laplace law and a Gradual Channel Detachment Effect (GCDE). The transistor is dedicated...
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Measurements of Subnanometer Molecular Layers
PublikacjaSelected methods of formation and detection of nanometer and subnanometer molecular layers were shown. Additionally, a new method of detection and measurement with subnanometer resolution of layers adsorbed or bonded to the gate dielectric of the ion selective field effect transistor (ISFET) was presented.
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RECENT ADVANCES IN GRAPHENE APPLICATION FOR ELECTRONIC SENSING
PublikacjaThe great interest in graphene is caused by its potential for constructing various sensors exhibiting excellent parameters. The high carrier mobility and the unique band structure of graphene makes it promising especially in the field-effect transistors (GFET) applications. In this article, recent advances of the selected graphene-based sensor applications were presented and the possible directions for further investigations were...
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Novel Structures and Applications of Graphene-Based Semiconductor Photocatalysts: Faceted Particles, Photonic Crystals, Antimicrobial and Magnetic Properties
PublikacjaGraphene, graphene oxide, reduced graphene oxide and their composites with various compounds/materials have high potential for substantial impact as cheap photocatalysts, which is essential to meet the demands of global activity, offering the advantage of utilizing “green” solar energy. Accordingly, graphene-based materials might help to reduce reliance on fossil fuel supplies and facile remediation routes to achieve clean environment...
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Analysis of graphene multi-strip planar guiding structures with the use of spectral domain approach
PublikacjaSpectral domain approach is modified and used to analyze some simple structures containing graphene strips. The modification is simple and concerns the Green’s function only. Moreover, the method is combined with the recently published root finding algorithms, which significantly improve the efficiency of the analysis. The results obtained for a simple guiding structure is verified and the field displacement effect is confirmed.
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Imaging of graphene surface by means of tapping mode AFM
Dane BadawczeGraphene [1] is a material consisting of carbon planes with a hexagonal structure. One of the facts of interest from a purely scientific point of view is the very high mobility of electrons in the described material, allowing the study of relativistic effects inside a solid sample. Other features, such as bactericidal activity, make graphene an interesting...
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A quasi-2D small-signal MOSFET model - main results
PublikacjaDynamic properties of the MOS transistor under small-signal excitation are determined by kinetic parameters of the carriers injected into the channel, i.e., the low-field mobility, velocity saturation, mobility at the quiescent-point (Q-point), longitudinal electric field in the channel, by dynamic properties of the channel, as well as by an electrical coupling between the perturbed carrier concentration in the channel and the...
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Review of the Application of Graphene-Based Coatings as Anticorrosion Layers
PublikacjaDue to the excellent properties of graphene, including flexibility that allows it to adjust to the curvature of the substrate surface, chemical inertness, and impermeability, graphene is used as an anticorrosion layer. In this review, we present the current state-of-the-art in the application of graphene in the field of protective coatings. This review provides detailed discussions about the protective properties of graphene coatings...
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Graphene Production and Biomedical Applications: A Review
PublikacjaGraphene is a two-dimensional nanomaterial composed of carbon atoms with sp2 hybrid orbitals. Both graphene and graphene-based composite have gained broad interest among researchers because of their outstanding physiochemical, mechanical, and biological properties. Graphene production techniques are divided into top-down and bottom-up synthesis methods, of which chemical vapor deposition (CVD) is the most popular. The biomedical...
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A simplified behavioral MOSFET model based on parameters extraction for circuit simulations.
PublikacjaThe paper presents results on behavior modeling of general purpose Metal-Oxide Semiconductor Field-Effect Transistor (MOSFET) for simulation of power electronics systems requiring accuracy both in steady-state and in switching conditions. Methods of parameters extraction including nonlinearity of parasitic capacitances and steady-state characteristics are based on manufacturer data sheet and externally measurable characteristics....