PPPL

OLTP Seminar Series

Online Low Temperature Plasma (OLTP) Seminar Series

Because of the pandemic caused by COVID-19, most scientific conferences, workshops, and symposia have been cancelled or postponed. The unfortunate consequence of this is that the low temperature plasma (LTP) community, like many other research communities, is now isolated without the opportunity to meet, network, and learn what’s new in our field. To remedy this situation, a bi-weekly online seminar has been organized. This seminar series, founded by Prof. Mounir Laroussi of Old Dominion University, is meant to fill the gap left open by the lack of scientific meetings and conferences. The seminar organizing committee has selected several outstanding speakers to participate by giving a 25-30 minutes lecture followed by 10-15 minutes discussion. The seminar, held on Tuesdays at 9:00 AM EST via Zoom, is free to access from anywhere in the world.

For more information, and to request the Zoom link and password, please contact Dr. Vasco Guerra (vguerra@tecnico.ulisboa.pt) and Dr.Mikhail Shneider(shneyder@princeton.edu).

The OLTP seminar is sponsored by AIP Publishing and their Plasma Portfolio of Journals: Journal of Applied Physics, Physics of Plasmas, AIP Advances, and Matter and Radiation at Extremes.

OLTP Seminar Committee Members

Past Seminars

OLTP By Laws

All talks place 4:00pm Paris time/ 10:00am Eastern Time

Upcoming

  • Scott Walton
    #s1760, Tuesday, 28 May 2024, 10:00am
  • Li Wang
    #s1742, Tuesday, 14 May 2024, 10:00am
  • Sangki Nam
    #s1759, Tuesday, 30 Apr 2024, 10:00am
  • Azer Yalin
    #s1758, Tuesday, 16 Apr 2024, 10:00am
  • Cosmic Dust Bunnies and Laboratory Dust Crystals: Building planets, breaking symmetry (abstract)
    Lorin Matthews

    Lorin Swint Matthews is a Professor and Chair of the Department of Physics at Baylor University where she is the Associate Director of the Center for Astrophysics, Space Physics, and Engineering Research. She received her Ph.D. in Physics from Baylor University in 1998. She worked for Raytheon Aircraft Integration Systems from 1998-2000 as a multi-disciplined engineer in the Flight Sciences Department, where she worked on NASA's SOFIA (Stratospheric Observatory for Infrared Astronomy) aircraft. In 2000, she joined the faculty at Baylor University. Her areas of research include numerical modeling and experimental investigations of the charging and dynamics of dust in astrophysical and laboratory plasma environments, for which she received a National Science Foundation CAREER Award in 2009. She is a Fellow of the American Physical Society.

    #s1757, Tuesday, 02 Apr 2024, 10:00am
    Dust is everywhere. 99.99% of the matter in the universe is in the plasma state – it’s everywhere, too. What happens when dust and plasma get together? Dr. Matthews’ research is focused on dusty plasmas: tiny pieces of ice and rock a hundred times smaller than the width of a human hair, and their interaction with plasma, the glowing ionized gas that makes up 99% of our universe. She investigates phenomena ranging from how dust in cosmic gas clouds starts to clump together to form new planets (the formation of cosmic dust bunnies) to how these small particles can assemble themselves into incredibly ordered structures like crystals and helical strings reminiscent of the twisted helix of DNA. Understanding the charging and dynamics of dust is vital to understanding our universe as well as exploring our solar system. Numerical modeling of the coupled charging and transport processes allows exploration of environments which can’t be easily reached. These models must be validated by comparing with experimental measurements. This talk will provide a brief overview of current capabilities of numerical models and their validation against both ground and space-based experiments.
  • Yang Cao
    #s1756, Tuesday, 19 Mar 2024, 10:00am
  • Davide Mariotti
    #s1755, Tuesday, 05 Mar 2024, 10:00am

    Non-equilibrium plasmas offer unique processing environments to synthesize materials with exotic properties not achievable with other methodologies [1-3]. More specifically, atmospheric pressure non-equilibrium plasmas are attractive for their non-vacuum operation, which can facilitate and reduce the costs of their integration in manufacturing steps [4]. In this contribution, the use of atmospheric pressure plasmas to explore new materials and tailor their properties will be presented, including opportunities offered through defect creation, surface engineering, doping and ‘cluster-doping’ [5-6]. Of fundamental importance to achieve materials with desired properties is also the understanding of the underlying plasma mechanisms and therefore efforts in this direction will also be discussed. Finally, examples of plasma-based device fabrication will be described [7]. For instance, this contribution will include aspects that relate to plasma synthesis of nanofluids for solar-thermal energy conversion, functionalization of catalytic surfaces as well as fabrication of solar cells [4, 5, 8, 9].

    1. AJ Wagner et al. Physical Review E 80 (2009) 065401 2. S Ghosh et al. Journal of Physics D: Applied Physics 48 (2015) 314003 3. P Maguire et al. Nano Letters 17 (2017) 1336 4. D Mariotti et al. Plasma Processes and Polymers 13 (2016) 70 5. Khalid et al. Advanced Energy Materials 12 (2022) 2201131 6. V Švrček et al. Journal of Physics D: Applied Physics 43 (2010) 415402 7. D Sun et al. Composites Science and Technology 186 (2020) 107911 8. HS Moghaieb et al. Nanomaterials 13 (2023) 1232 9. V Švrček et al. Chemical Physics Letters 478 (2009) 224

Past

  • Kenji Ishikawa, Nagoya University, Japan (video)

    Kenji Ishikawa is a Professor of Center for low temperature plasma science (clps), Nagoya University, Japan. His scientific research interests involve plasma-surface interactions in semiconductor processes and cover plasma effects on liquids and living organisms, involving plasma medicine and plasma agriculture studies. He joined the Nagoya University in 2009 and was promoted to an adjunct professor of the plasma nanotechnology research center (PLANT) of the Nagoya University in 2012. From 2019 to 2020, he was an adjunct professor of the center of plasma nano-interface engineering (CPNE), Kyushu University. He received the 11th Plasma Electronics Award (2013) and the 37th Outstanding Paper Award (2015), of the Japan Society of Applied Physics for work related to the in situ real time analysis of electron spin resonance (ESR) allowing to detection of free radicals on materials and living organisms. He holds his Ph.D. in engineering from Tohoku University, and has published more than 3 papers in refereed international journals and his works cited over 5484 times with h-index of 36. He has also given more than 70 invited talks and holds more than 50 patents. He has served as program chairman of the international symposium of advanced plasma science and its applications for nitrides and nanomaterials and the international conference on plasma nanotechnology and science (ISPlasma/IC-PLANTS).

    , abstract, slides

    [#s1741, 20 Feb 2024]
    Low temperature plasma (LTP) provides a nonequilibrium reaction field for chemically reactive species without thermal heating. For examples, nitrogen plasma chemical reactions compete between oxidation and reduction and the nitrogen cycle is relevant to redox reactions. In situ functionalization of resources can be achieved using plasma-driven catalysts. Moreover, nitrogen fixation occurs under air and water discharge and can be used as a fertilizer in agriculture. Plasma contacts liquid solutions, and materials are created in them. Plasma-liquid interactions induce some beneficial effects. The gain of pharmaceutical effectiveness has emerged and is called plasma pharmacy. There are no clear advantages and disadvantages of plasma-generated products, together with oxidative or reductive stimuli toward living organisms. However, short-lived species have not been a concern; controlled plasma-driven phenomena can be used as pharmaceutical drugs. All plasma-driven phenomena are categorized as a chain of plasma generation, a chemical reaction network with radical formation, and reactions at the surface and through the boundaries of multiple phases. These hierarchical interactions in plasma processing can be revisited and adapted for plasma life innovations through the evolution of plasma-driven science.
  • An introduction to the electrostatic particle-in-cell method and some applications related to streamer discharges video
    Jannis Teunissen, abstract
    [#s1740, 06 Feb 2024]
    This talk will mostly consist of a general introduction to electrostatic particle-in-cell methods, with a focus on the modeling of low-temperature plasmas. In a particle-in-cell code, the evolution of a large number of particles (such as electrons and/or ions) is tracked by solving their equations of motion. Particle collisions, described by cross sections, are usually handled with a Monte Carlo method. Electrostatic fields are computed at every time step on a numerical mesh with a fast Poisson solver. Particle methods can accurately describe a wide range of physical phenomena and they are relatively simple to implement. Drawbacks are that computational costs are often high and that results can be noisy, due to the use of a finite number of simulation particles. I will discuss several approaches to reduce computational costs: the use of adaptive mesh refinement, the adaptation of particle weights during a simulation, efficient Poisson solvers and parallelization. At the end of the presentation, I will present some examples of particle simulations of streamer discharges.
  • Plasma Micropropulsion video
    Jochen Schein
    [#s1739, 23 Jan 2024]
  • Characterization of Low-temperature Discharges and their Applications in Plasma AgricultureT , Video
    Nevena Puac
    [#s1738, 09 Jan 2024]
  • Modeling plasmas for CO2 conversion: from fundamental data to applications Video
    Luca Vialetto, slides
    [#s1692, 19 Dec 2023]
  • EM PIC modeling of CCP discharges Video
    Denis Eremin , slides
    [#s1691, 05 Dec 2023]
  • Molecule interactions with surfaces
    Maria Rutigliano, slides
    [#s1690, 21 Nov 2023]
  • Manipulating plasma chemistry using repetitive nanosecond pulsed power for plasma medicine and ignition for combustion Video
    Chunqi Jiang
    [#s1689, 31 Oct 2023]
  • Measuring the last few electrons on dust particles in plasma: from diagnostics development to application in industry Video
    Job Beckers , slides
    [#s1688, 24 Oct 2023]
  • Electron emission and backscattering from surfaces Video
    Franz Xaver Bronold, slides
    [#s1685, 03 Oct 2023]
  • Perspective of kinetic modeling for semiconducter industry Video
    Shahid Rauf, slides
    [#s1683, 05 Sep 2023]
  • Laser diagnostics in plasmas video
    Zhili Zhang
    [#s1682, 22 Aug 2023]
  • Development of CubeSat de-orbit ALl-printed Propulsion System (Cube-de-ALPS) , Video
    Minkwan Kim
    [#s1681, 25 Jul 2023]
  • Plasma nanotechnology in clean energy and environmental applications video
    Voelker Brueser
    [#s1631, 18 Jul 2023]
  • The Physics of Field-reversed Configuration (FRC) Fusion Reactors video
    Samuel Cohen, slides
    [#s1630, 27 Jun 2023]
  • The Sheared-Flow-Stabilized Z Pinch for Fusion and Space Propulsion video
    Uri Shumlak
    [#s1626, 13 Jun 2023]
  • Plasma in liquids for the synthesis of nanomaterials video
    Thierry Belmonte
    [#s1625, 30 May 2023]
  • Multi-temperature models for CO2 vibrational kinetics video
    Elena Kustova
    [#s1624, 16 May 2023]
  • Plasma pyrolysis of natural gas video
    Alexander Khrabry
    [#s1606, 02 May 2023]
  • Network analysis and graph based approaches for plasma chemistry video
    Tomoyuki Murakami
    [#s1605, 18 Apr 2023]
  • Plasma expansion in magnetic nozzles video
    Justin Little
    [#s1604, 04 Apr 2023]
  • Plasma and (electro)catalysis for nitrogen fixation video
    Dr. Mihalis Tsampas
    [#s1603, 21 Mar 2023]
  • Study of various configurations of micro hollow cathode discharges in Ar/N2 used for boron nitride PECVD video
    Claudia Lazzaroni, slides
    [#s1602, 07 Mar 2023]
  • Advanced optical diagnostics of cold atmospheric plasmas in rare gas jets video
    João Santos Sousa, slides
    [#s1598, 21 Feb 2023]
  • Streamer discharge propagation in long air gaps , Video
    Andrey Starikovskiy
    [#s1597, 07 Feb 2023]
  • Fundamentals and applications of coherent microwave scattering , Video
    Alexey Shashurin, abstract, slides
    [#s1596, 24 Jan 2023]
    Measurements of plasma parameters in small-size plasmas are very challenging as many traditional diagnostic approaches cannot be used. The coherent microwave scattering (CMS) offers a convenient diagnostic solution for such small plasmas. It is based on measurement of the constructive coherent elastic scattering of microwaves off the plasma object. Scattered radiation can be detected and attributed after appropriate system calibration to the certain properties in the plasma object including absolute electron count, electron number density, and electron-gas collisional frequency. Fundamentals of the coherent microwave scattering with an emphasis on Thomson, collisional, and Rayleigh scattering in short, thin unmagnetized plasma media will be considered. Ideality of the CMS technique in the Thomson “free-electron” regime will be reviewed where a detailed knowledge of collisional properties (which are often difficult to accurately characterize) is unnecessary to extract electron number measurement from the scattered signal. Substantially higher sensitivity of the CMS in comparison with the incoherent counterpart in the optical frequency domain (laser Thomson scattering) will be discussed. Several experimental demonstrations of the CMS in collisional and Thomson scattering regimes will be discussed. Applications of the CMS for diagnostics of combustion, electric propulsion, nanosecond repetitively pulsed discharges, photoionization in near- and mid-infrared, and small-size glow discharges enclosed within glass tubes will be considered. Dr. Shashurin is an Associate Professor in the School of Aeronautics and Astronautics at Purdue University. His research is focused on experimental plasma science and engineering with special emphasis on diagnostics and applications of plasmas to electric propulsion, combustion, hypersonics, and biomedical engineering. The research results have been reported in >90 peer-reviewed journal articles, >100 conference proceedings, and 9 patent applications. Dr. Shashurin is Associate Fellow of The American Institute of Aeronautics and Astronautics (AIAA), Senior Member of The Institute of Electrical and Electronics Engineers (IEEE), and the recipient of the Welch International Award for 2008.
  • How to choose your nanosecond plasma: a bridge between kinetics and applications , Video
    Svetlana Starikovskaya
    [#s1595, 10 Jan 2023]
  • The Role of Plasmas in the Electrification and Decarbonization of Chemical Manufacturing

    JOINT SEMINAR WITH GEC-IOPS

    Eray Aydill
    [#s1497, 13 Dec 2022]
  • Modelling low-current quasi-stationary gas discharges: mathematical aspects and a practical guide , Video
    Mikhail S. Benilov, slides
    [#s1496, 29 Nov 2022]
  • Electromagnetic Interactions in Magnetized and Non-Magnetized Plasma Metamaterials and Photonics Crystals video
    Mark Cappelli, slides
    [#s1495, 15 Nov 2022]
  • Plasma-combustion topic video
    Laxminarayan Raja, slides
    [#s1494, 01 Nov 2022]
  • Reactive species in atmospheric pressure plasmas: measurement and control

    JOINT SEMINAR WITH GEC-IOPS

    Timo Gans
    [#s1535, 27 Oct 2022]
  • APS DPP Meeting
    [#s1492, 18 Oct 2022]
  • GEC Conference
    [#s1491, 04 Oct 2022]
  • Non-equilibrium plasmas for climate change mitigation video
    Deanna Lacoste, slides
    [#s1490, 20 Sep 2022]
  • Cathodic arc plasma science and applications: The known unknown and unknown known video
    Andre Anders, slides
    [#s1533, 06 Sep 2022]
  • Plasma medicine

    JOINT SEMINAR WITH GEC-IOPS

    Annemie Bogaerts
    [#s1534, 01 Sep 2022]
  • Inductive discharges: past, present and future video
    Tsanko Tsankov, slides
    [#s1488, 23 Aug 2022]
  • Theoretical description and modelling of low-current arcs at small gap distances video

    JOINT SEMINAR WITH GEC-IOPS

    Margarita Baeva, Leibniz Institute for Plasma Science and Technology, Germany
    [#s1489, 18 Aug 2022]
  • Dependency of wave-frequency and mode-number on gas pressure in partially magnetized ExB sources with 2D-PIC simulations and experiments , Video
    Cheongbin Cheon, Pusan National University
    [#s1647, 16 Aug 2022]
  • Low-temperature plasma technology for inactivation of pathogenic microbial aerosol video
    Dawei Liu, slides
    [#s1487, 26 Jul 2022]
  • Physics of plasma jets and interaction with surfaces video
    Pedro Viegas, slides
    [#s1486, 12 Jul 2022]
  • Hysteresis physics of inductively coupled plasmas video
    Hyo-Chang Lee, slides
    [#s1440, 28 Jun 2022]
  • UV light technologies for disinfection and purification of water and air video
    Leonid Vasyliak , slides
    [#s1441, 14 Jun 2022]
  • Plasma focus: novel dense-hot plasma and radiation source for plasma nanotechnology and studying fusion relevant materials under extreme condition video
    Rajdeep Singh Rawat , slides
    [#s1442, 31 May 2022]
  • Fast Spectroscopy of nanosecond plasmas in liquids: the quest for signatures of direct, bubble-assisted and bubble-driven discharge mechanisms video
    Milan Simek , slides
    [#s1443, 17 May 2022]
  • Plasma processing of new materials video
    Jane Chang , slides
    [#s1444, 03 May 2022]
  • Helicon plasmas, magnetic nozzles video
    Kazunori Takahashi, slides
    [#s1445, 19 Apr 2022]
  • From arc welding to wire-arc additive manufacturing – extending the range of application of an arc plasma model video
    Tony Murphy, slides
    [#s1406, 05 Apr 2022]
  • In-orbit demonstration of an iodine electric propulsion system

    JOINT SEMINAR WITH IOPS

    Dmytro Rafalsky
    [#s1456, 31 Mar 2022]
  • Characterization of a radio-frequency inductively coupled electrothermal plasma thruster

    JOINT SEMINAR WITH IOPS

    Trevor Lafleur
    [#s1455, 31 Mar 2022]
  • Tutorial on optical diagnostics of methane plasma
    Tim Chen, slides
    [#s1405, 22 Mar 2022]
  • Plasma oncology

    JOINT SEMINAR WITH IOPS

    Vandana Miller
    [#s1454, 17 Mar 2022]
  • What LTP community needs to know about EXB discharges

    JOINT SEMINAR WITH IOPS

    video
    Jean-Pierre Boeuf, slides
    [#s1404, 08 Mar 2022]
  • Towards Kinetic Whole Device Modeling of Low-Temperature Plasma Devices - Algorithms and Computer Science video
    Tasman Powis, slides
    [#s1403, 22 Feb 2022]
  • Understanding the mechanisms of non-thermal plasma treatments on seeds video
    Alexandra Waskow, slides
    [#s1402, 08 Feb 2022]
  • Nonlinear Transmission Line (NTL) Study of Electromagnetic Modes in Capacitive Discharges video
    Emi Kawamura, slides
    [#s1401, 25 Jan 2022]
  • Classical Langmuir probe diagnostics: Validity, problems and their resolution video

    JOINT SEMINAR WITH IOPS

    Valery Godyak, slides
    [#s1400, 11 Jan 2022]