Results 271 to 280 of about 2,748,623 (319)
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Estimation of tunneling-barrier width in scanning tunneling microscope from noise characteristics
Measurement Techniques, 1999A method is proposed for estimation of the potential-barrier width of the tunneling junction of a scanning tunneling microscope (STM). The method is based on measurement of the fluctuations of the tunneling-barrier height and their correlation with the flicker noise of the tunneling current.
S. A. Bychikhin +2 more
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Japanese Journal of Applied Physics, 1986
The resonant tunneling current is studied in AlAs/GaAs/AlAs double barrier heterostructures in which the barrier widths L B are precisely controlled to be exactly 5, 8 and 11 atomic monolayers. It is demonstrated for the first time that the density of resonant current in these diodes can be controlled from 5×102 Acm-2 to 1.2×104 ...
Masahiro Tsuchiya, Hiroyuki Sakaki
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The resonant tunneling current is studied in AlAs/GaAs/AlAs double barrier heterostructures in which the barrier widths L B are precisely controlled to be exactly 5, 8 and 11 atomic monolayers. It is demonstrated for the first time that the density of resonant current in these diodes can be controlled from 5×102 Acm-2 to 1.2×104 ...
Masahiro Tsuchiya, Hiroyuki Sakaki
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Effect of barrier width on the performance of quantum well infrared photodetector
Infrared Physics & Technology, 2001Abstract We present a study on a set of AlGaAs/GaAs quantum well infrared photodetectors with various barrier widths from about 100 to 500 A . At 77 K and for a large field-of-view (FOV) 300-K background operation, measured results on dark current, responsivity, and detectivity indicate that detectors with barrier widths larger than about 200
Sim, S. K. +8 more
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Dependence of photoluminescence of ZnO/Zn0.85Mg0.15O multi-quantum wells on barrier width
Physics Letters A, 2009Abstract Temperature-dependent photoluminescence (PL) from two multi-quantum well (MQW) structures with different barrier widths has been systematically investigated. The PL band in the well layers is dominated by localized excitons (LE), D0X, and D0X-1LO. As the temperature increases, luminescence from the excitons localized in the well layers shows
Xiuquan Gu +5 more
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Width Barriers to Markovian Closure under Finite Observation
This preprint studies a structural obstruction to Markovian (memoryless) closure when reduced models are built from finitely many observables of chaotic or fractal dynamics. The central viewpoint is observation-first: once a finite observation map ONO_NON is fixed in the Hilbert space of observables, it canonically induces an orthogonal projection ...openaire +1 more source
Quantum behavior of double barrier structure with variable width
Nanophotonics, Micro/Nano Optics, and Plasmonics VIII, 2022Deborah Eric, Abbas A. Khan
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Tunable Schottky barrier width and enormously enhanced photoresponsivity in Sb doped SnS2 monolayer
Nano Reseach, 2018Junchi Liu +11 more
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PNPN tunnel FET with controllable drain side tunnel barrier width: Proposal and analysis
, 2015D. Abdi, M. J. Kumar
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Estimation of Occupant Compartment Intrusion in Full-Width Rigid Barrier Impacts
Transport MeansIn this paper, a generic two degree-of-freedom lumped-mass car model is developed which involves separate elements for longitudinal members and occupant compartment structure. This generic car model is validated against full-width rigid barrier (FWRB) crash test data of 7 different cars with model years ranging from 2002 to 2010. The validation process
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The blood–tumour barrier in cancer biology and therapy
Nature Reviews Clinical Oncology, 2021Patricia S Steeg
exaly