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Two-dimensional capacitively coupled radio frequency discharge in methane is simulated by PIC-MCC method. The results were obtained in pressure range 50-300 mTorr and voltage range 40-180 V for discharge frequency 13.56 MHz. The electron…

Plasma Physics · Physics 2009-11-10 A L Alexandrov , I V Schweigert

Optical conductivity s(w) of PrRu4P12 has been studied under high pressure to 14 GPa, at low temperatures to 8 K, and at photon energies 12 meV-1.1 eV. The energy gap in s(w) at ambient pressure, caused by a metal-insulator transition due…

An electrohydrodynamic numerical model is used to explore the electrospray emission behavior of both moderate and high electrical conductivity liquids under electrospray conditions. The Volume-of-Fluid method, incorporating a…

Fluid Dynamics · Physics 2022-11-30 Henry Huh , Richard E. Wirz

This report summarizes the present knowledge on discharges in micropattern and small gap gaseous detectors and the physical mechanisms involved. These include the space-charge (Raether's) limit, rate-induced breakdown, cathode excitation…

Instrumentation and Detectors · Physics 2009-11-04 V. Peskov , P. Fonte

Water electrolysis in a microsystem is observed and analyzed on a short-time scale ~10 us. Very unusual properties of the process are stressed. An extremely high current density is observed because the process is not limited by the…

Soft Condensed Matter · Physics 2013-07-18 Vitaly B. Svetovoy , Remco G. P. Sanders , Miko C. Elwenspoek

This work proposes a novel method of Thomson microwave scattering for electron number density measurements of miniature plasmas at pressures < 10 Torr. This method is applied to determine electron number density in a positive column of glow…

Plasma Physics · Physics 2019-05-20 Xingxing Wang , Apoorv Ranjan , Animesh Sharma , Mikhail N. Shneider , Alexey Shashurin

We measure the energy distribution of electrons passing through a two-dimensional electron gas using a scanning probe microscope. We present direct spatial images of coherent electron wave flow from a quantum point contact formed in a…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 B. J. LeRoy , A. C. Bleszynski , M. A. Topinka , R. M. Westervelt , S. E. J. Shaw , E. J. Heller , K. D. Maranowski , A. C. Gossard

In the last few decades, studies in various fields of plasma technology have expanded and its application in different processes has increased. Therefore, the achievement of a desirable and practical plasma with specific characteristics is…

Dielectric barrier discharge (DBD) in air is characterized applying current measurement, numerical simulation and optical emission spectroscopy (OES). For OES, a non-calibrated spectrometer is used. This diagnostic method is applicable when…

Plasma Physics · Physics 2012-02-20 Priyadarshini Rajasekaran , Nikita Bibinov , Peter Awakowicz

We have studied the distribution of equilibrium edge current density in 2D system in a strong (quantizing) magnetic field. The case of half plane in normal magnetic field has been considered. The transition from classical strong magnetic…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 M. V. Entin , L. I. Magarill , M. M. Mahmoodian

We study the development of a negative discharge driven by a Marx generator of about 1 MV in an air gap of 1 up to 1.5 meter, at standard temperature and pressure. We show the evolution of the discharge with nanosecond-fast photography…

Plasma Physics · Physics 2014-03-21 P. O. Kochkin , A. P. J. van Deursen , U. Ebert

Modern two dimensional conductors with low defect densities and strong electron-electron scattering are favorable platforms for formation of a viscous fluid of conduction electrons. Electric properties of these systems are determined by the…

Mesoscale and Nanoscale Physics · Physics 2026-05-13 A. N. Afanasiev , P. S. Alekseev

GaAs-based two-dimensional electron gases (2DEGs) show a wealth of remarkable electronic states, and serve as the basis for fast transistors, research on electrons in nanostructures, and prototypes of quantum-computing schemes. All these…

Mesoscale and Nanoscale Physics · Physics 2010-09-21 M. P. Jura , M. A. Topinka , L. Urban , A. Yazdani , H. Shtrikman , L. N. Pfeiffer , K. W. West , D. Goldhaber-Gordon

We study light propagation through a slab of cold gas using both the standard electrodynamics of polarizable media, and massive atom-by-atom simulations of the electrodynamics. The main finding is that the predictions from the two methods…

Optics · Physics 2017-09-21 Juha Javanainen , Janne Ruostekoski , Yi Li , Sung-Mi Yoo

We measure the temperature of a 2D electron gas in GaAs from the thermopower of a one-dimensional ballistic constriction, using the Mott relation to confirm the calibration from the electrical conductance. Under hot electron conditions,…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 N. J. Appleyard , J. T. Nicholls , M. Y. Simmons , W. R. Tribe , M. Pepper

We report on non-linear transport phenomena at high filling factor and DC current-induced electronic hydrodynamics in an ultra-high mobility (mu=20x10^6 cm^2/Vs) two-dimensional electron gas in a narrow (15 micron wide) GaAs/AlGaAs Hall bar…

Mesoscale and Nanoscale Physics · Physics 2023-05-17 Zitong Wang , Michael Hilke , Norm Fong , Guy Austing , Sergei Studenikin , Ken West , Loren Pfeiffer

We use the one-dimensional object-oriented particle-in-cell Monte Carlo collision code oopd1 to explore the charged particle densities, the electronegativity, the electron energy probability function (EEPF), and the electron heating…

Plasma Physics · Physics 2017-11-28 Jon Tomas Gudmundsson , David I. Snorrason

We calculate the single-particle states of a two-dimensional electron gas (2DEG) in a perpendicular quantizing magnetic field, which is periodic in one direction of the electron layer. We discuss the modulation of the electron density in…

Mesoscale and Nanoscale Physics · Physics 2009-10-30 Ulrich J. Gossmann , Andrei Manolescu , Rolf R. Gerhardts

Swarm techniques have largely been used to investigate electron transport in very dilute gases in order to shed light on the electron-atom (molecule) scattering cross section and, hence, on the interaction potential. The theoretical basis…

Plasma Physics · Physics 2015-06-17 A. F. Borghesani

Understanding the stability mechanism of surface micro/nanobubbles adhered to gas-evolving electrodes is essential for improving the efficiency of water electrolysis, which is known to be hindered by the bubble coverage on electrodes. Using…

Fluid Dynamics · Physics 2024-04-16 Yixin Zhang , Xiaojue Zhu , Jeffery A. Wood , Detlef Lohse