Results 11 to 20 of about 972 (218)
Study on Self-Parallel GaN-Based Terahertz Hetero-Structural Gunn Diode
Applied Sciences, 2020 In this paper, we propose a novel gallium nitride-based multi-two-dimensional-electron-gas (2DEG)-channel self-parallel Gunn diode (SPD) for the first time.
Ying Wang +4 more
doaj +2 more sources
An Algorithm to Develop Lumped Model for Gunn-Diode Dynamics [PDF]
Active and Passive Electronic Components, 1998 A nonlinear lumped model can be developed for Gunn-Diodes to describe the diffusion effects as the domain travels from cathode to anode of a Gunn-Diode. The model describes the domain extinction and nucleation phenomena.
Umesh Kumar
doaj +2 more sources
Photoinduced Negative Differential Resistivity and Gunn Oscillations in SrTiO3. [PDF]
Adv Sci (Weinh), 2023 SrTiO3 crystals exhibit non‐linear transport of photo‐carriers excited with above band photons, generating a voltage‐controlled negative resistance stemming from an intervalley transfer of photo‐induced electrons. As a consequence of the negative resistance, the photocurrent becomes unstable and spontaneously gives rise to low frequency Gunn‐like ...
Soleimany M, Alexe M.
europepmc +2 more sources
Point-of-Care Diagnosis of Cryptosporidiosis in Neonatal Ruminant Faecal Samples by a Portable Field Microscope Integrated With a Smartphone. [PDF]
Vet Med SciA portable, smartphone‐integrated microscope enables rapid, on‐site diagnosis of Cryptosporidium spp. oocysts in neonatal ruminant faeces using carbol fuchsin staining. It provides diagnostic image quality comparable to laboratory microscopes with up to 1000× magnification and ∼1 micrometers (µm) resolution.
Sayarcan D +4 more
europepmc +2 more sources
Active Photonic Glass for Hydrogen Generation. [PDF]
ChemistryThis article reports the fabrication of photonic glass with a chiral nematic structure using a simple sol‐gel evaporation‐induced cellulose nanocrystals self‐assembly method. The glass exhibits variable iridescent colors over the UV‐visible range.
Wang C +6 more
europepmc +2 more sources
Energy Technology, Volume 11, Issue 10, October 2023., 2023 This work focuses on the photocatalytic CO2 reduction on Au/g‐C3N4/TiO2 tricomponent‐based materials under visible light irradiation. It is highlighted with the fact that doping g‐C3N4 with nonmetals elements improves the quality of heterojunctions of both semiconductors. Furthermore, deposition of small gold nanoparticles improves the overall activity
Leila Hammoud +6 more
wiley +1 more source
Advanced Materials, Volume 35, Issue 32, August 10, 2023., 2023 A reactive attachment based on hexachloroplatinic(IV) acid is shown to lead directly to single atom configuration with a significantly higher specific H2 evolution activity than achieved with strong electrostatic adsorption – and this is at a significantly lower Pt loading without any post‐deposition treatment.
Yue Wang +6 more
wiley +1 more source
Isothermal measurement of current-voltage characteristics of Gunn diodes with reflection of their discontinuities and hysteresis [PDF]
ITM Web of Conferences, 2019 Requirements to the measuring setup are formulated, which make it possible obtaining isothermal current-voltage (I-V) characteristics of the Gunn diode with reflection of their discontinuities, region of negative differential resistance, and hysteresis ...
Semyonov Edward, Malakhovskij Oleg
doaj +1 more source
Semiconductor Terahertz Physics
Annalen der Physik, Volume 535, Issue 8, August 2023., 2023 Many physical phenomena repeat at frequencies in the range from 0.1 to 10 THz. This is especially true in semiconductors—both elemental (group IV) and compound (III–V and II–VI). The terahertz phenomena include both lattice (phononic) and charge‐carrier (electronic) excitations.
R. A. Lewis
wiley +1 more source
Electronics Letters, Volume 59, Issue 12, June 2023., 2023 In this paper, a novel active integrated array antenna (AIAA) is introduced for the purpose of enabling pattern switchable functionality. Abstract In this paper, a novel active integrated array antenna (AIAA) is introduced for the purpose of enabling pattern switchable functionality.
Maodudul Hasan +3 more
wiley +1 more source