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Aug 29

Notes from iPlasmaNano 2018

It was a really dense conference. Mostly, the professors gave talks about the latest updates of their research. The discussions were at high level. I tried to keep my eyes open to follow almost every talk ūüôā But, it’s worth it ūüôā Here are the topics attracting my attention.

 

 

Nano particle synthesis: https://scholar.google.com/citations?user=ni1mqkEAAAAJ&hl=en

–>in-situ FTIR:plasma-nano particle interaction

Graphite (anode–>mix with catalyst), BN nanotube synthesis by arc: https://scholar.google.com/citations?user=-PkzDBQAAAAJ&hl=en

–>B mix with metal (Ni, Co)

Computational plasma: http://faculty.ucmerced.edu/vayyaswamy/research.html

–>plasmaFOAM, Ti=Tg+((m_i/3k_b)mu_i^2E^2), non-Maxwellian ion number density 10^19 #/m^3

–>sheath oscillation: in low pressure-stochastic heating (can’t apply LFA,local field approx), in high pressure-ohmic heating

Space charge limited emission: https://aip.scitation.org/doi/10.1063/1.5004654

–>in high pressure-Matt-Gurney, in low pressure-Child-Langmuir, further Schr√∂dinger

–>Rougher surfaces have lower breakdown voltage

Social impact: https://www.linkedin.com/in/sung-jin-park-b2a5b510/

Plasma-surface interactions: https://www.researchgate.net/profile/Carles_Corbella

Hall thruster, BN self heating, catalyst with carbon nanotube: https://www.researchgate.net/profile/Carles_Corbella 

Tensile stress btw atoms, quantum dots with thermomechanical stress: https://scholar.google.com/citations?user=wSJ6cxcAAAAJ&hl=en

–>larger atoms are collected in one dot

10kW, IEDF affects selectivity: https://scholar.google.com/citations?user=cRanOQUAAAAJ&hl=en

–>by lowering Q-factor under mismatch, more lossy matching –>e energy increases, equilvalent circuit mdelling by M.Kushner

Plasma-based tuning, lower resonance freq–sheath diminishes¬†¬†https://scholar.google.com/citations?user=Qjw1ACoAAAAJ&hl=en

–>negative permittivity (meta material) — more number of electrons, conductivity increases

–>DC abnormal glow: i increases, res freq decreases

–>applied freq<< plasma freq (sqrt (e^2 n_e / m Epsilon_0))

–>alpha discharge –> walls are protected by ion bombardment

Double negative meta material (Epsilon<0, Mu<0): https://scholar.google.com/citations?user=LknRjyEAAAAJ&hl=en

–>1 W, low pressure, dielectric resonator

RF manipulations: https://scholar.google.com/citations?user=PKxNAt0AAAAJ&hl=en

–>tuning number of electrons (n_e), Epsilon(V)=1-n_e/(w^2+v_m^2) where v_m^2=collision resonance freq which is a func of pressure

–>define ‘effective secondary emission coefficient’, i increases, cathode sheath diminishes for gamma mode of RF disch–>it is like DC with switching polarity (AC?)

–>P_noise / delta f = 4kT_e / (1+w^2/v_m^2) , power noise, in metal just¬†¬†P_noise / delta f = 4kT_e but as noise reduces, conductivity decreases.

–>if purpose is to produce high number of electrons, HV, high pulsing rate –>low Te, high n_e

–>Add H2O vapor to reduce T_e

–>pd – 0.0001 Torr cm , field ionization, 20 ps ignition time (e time of flight) n_e – 10^10 cm^-3

CNT growth on substrates, energy storage applications, super capacitor: https://scholar.google.com/citations?user=N2yMgt8AAAAJ&hl=en https://engineering.ucsb.edu/~mjgordon/research/index.html

In-situ plasma catalysis: https://www.research.manchester.ac.uk/portal/en/researchers/chris-hardacre(c10c2a33-9679-4501-b20f-272a2460b25c)/publications.html

–>NOx with HC, CO2 selectivity increased with Al2O3+Pd

–>Temp in plasma 100 C (?)

–>plasma jet in DRIFT, plastic dome,

–>EXAFS data

–>SEI: 2.637 kJ/L

Carbon arc discharge: http://pdml.tamu.edu/

–>600 Torr, 2mm, e, He, C+, C*,C2…

–>55-60 A, low ablation-low deposit if anode diameter is decreased

–>T_e-1 eV

Laser produced plasma: http://www.inrs.ca/mohamed-chaker?f=publications

–>0.8 THz

–>VO2 for microsatellites

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