visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-04-19 14:00 
일시 Apr. 19(Tue.), 2PM 
장소 #1323(E6-2. 1st fl.) 
연사 Prof. Mark Koepke, Department of Physics and Astronomy, West Virginia University, USA 

Nonlocal collisional electron transport in partially ionized plasma generation, structure, and stability

 

Apr. 19(Tue.), 2PM, #1323(E6-2. 1st fl.)
Prof. Mark Koepke, Department of Physics and Astronomy, West Virginia University, USA

 

The local plasma generation, structure, and stability at one location and time can be unexpectedly influenced by “nonlocal” electron transport and heating effects attributed to conditions, processes, and boundaries many energy-relaxation scale lengths away in another part of the plasma. Nonlocal effects are attributed to electric-field sampling by a traversing electron across disparate regional plasma conditions when the electron energy relaxation length is larger than or comparable to the scale length of plasma inhomogeneity. As a result, the entire electric-field profile, including sheaths, striations, and filamentation, rather than the local electric field strength, determines spatiotemporal electron current and heating, even in collisional plasma. Non-equilibrium, nonlocal properties make partially ionized plasma, which is strongly affected also by the presence of neutral species, a solid surface, particulates, or a liquid, a remarkable tool for manufacturing (of semiconductor chips, solar and plasma-display panels, and plasma sources for particle beams), for the treatment of organic and bio-objects/materials, and for nanotechnology. A promising approach for improved control of the local quantities plasma density, electron temperature, and electron and ion energy distribution functions (EEDF, IEDF) exploits the peculiarities of nonlocal effects on these characteristic plasma parameters. Nonlocal collisional electron transport effects are important for understanding and applying atmospheric-pressure plasma jets, micro-discharges, and low pressure plasma discharges not only to the pursuit of the discovery plasma frontier but also to technology used everyday.

번호 날짜 장소 제목
공지 2022-10-24 16:00  E6 #1501(공동강의실)  Physics Colloquim(Fall 2022)
공지 2022-09-21 10:30  E6-1 #1501  [Update 세미나 영상] Distinguished Lecture 'The Magic of Moiré Quantum Matter' Prof. Pablo Jarillo-Herrero(Department of Physics, MIT)
공지 2022-11-11 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid
공지 2022-10-28 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates
공지 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer
공지 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions
공지 2022-09-22 11:00  E6-1 #1323  2022 가을학기 응집물리 및 광학 세미나 전체 일정
333 2018-12-07 16:00  E6-2. 1st fl. #1323  Novel probes of interacting electrons in 2D systems file
332 2019-09-27 14:30  E6-2. 1st fl. #1323  Spin-charge conversion in topological insulators for spintronic applications file
331 2022-11-04 16:30  Zoom  초세대 협업연구실 Quantum- & Nano-Photonics_Multifunctional neural probes with integrated nanophotonics file
330 2019-11-01 16:00  E6-2. 1st fl. #1323  Electron transport through weak-bonded contact metal with low dimensional nano-material file
329 2017-07-14 15:00  #1323 (E6-2. 1st fl.)  Chiral anomaly in disordered Weyl semimetals file
328 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
327 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
326 2015-12-17 11:00  E4(KI Building), Matrix Hall (2nd fl.)  Wavefront engineering for in-vivo Deep brain imaging
325 2016-10-18 15:00  E6-2. 1st fl. #1323  “Hybrid quantum systems with mechanical oscillators”
324 2016-07-08 14:00  #1323(E6-2. 1st fl.)  Electronic quasiparticles in the quantum dimer model
323 2015-11-24 16:00  E6-2, #1323  Topology-based understanding of spin dynamics in inhomogeneously magnetized systems
322 2022-04-01 16:00  Zoom webinar  High-field Electron Transport and Interaction Induced Phenomena in 2D Materials file
321 2018-11-29 16:00  #1323, E6-2  양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file
320 2021-06-11 16:00  Online seminar  Pseudogap in surface-doped black phosphorus file
319 2016-11-11 13:30  #1323(E6-2. 1st fl.)  Bandgap Engineering of Black Phosphorus
318 2016-04-01 14:30  E6-2. 1st fl. #1501  Interference of single charged particles without a loop and dynamic nonlocality
317 2016-05-31 16:00  #1323(E6-2, 1st fl.)  Understanding 3D tokamak physics towards advanced control of toroidal plasma
316 2018-05-11 14:30  E6-2. 1st fl. #1323  Disordered Floquet topological insulators file
315 2016-12-09 16:00  #1323(E6-2. 1st fl.  Shift Charge and Spin Photocurrents in Dirac Surface States of Topological Insulator
314 2022-05-13 14:30  Zoom webinar  Topological Superconducting Spintronics Towards Zero-Power Computing Technologies file