11 citations · 12 across the 5 of their papers we have counts for
5 papers
Cryogenic rf test of the first plasma etched SRF cavity
J. Upadhyay, A. Palczewski, S. Popović +4
Plasma etching has a potential to be an alternative processing technology for superconducting radio frequency (SRF) cavities. An apparatus and a method are developed for plasma etc…
Reversal of the Asymmetry in a Cylindrical Coaxial Capacitively Coupled Ar/Cl2 Plasma
J. Upadhyay, Do Im, S. Popović +3
The reduction of the asymmetry in the plasma sheath voltages of a cylindrical coaxial capacitively coupled plasma is crucial for efficient surface modification of the inner surface…
Self-bias Dependence on Process Parameters in Asymmetric Cylindrical Coaxial Capacitively Coupled Plasma
J. Upadhyay, Do Im, S. Popović +3
An rf coaxial capacitively coupled Ar/Cl2 plasma is applied to processing the inner wall of superconducting radio frequency cavities. A dc self-bias potential is established across…
Plasma Processing of Large Curved Surfaces for SRF Cavity Modification
J. Upadhyay, Do Im, S. Popović +3
Plasma based surface modification of niobium is a promising alternative to wet etching of superconducting radio frequency (SRF) cavities. The development of the technology based on…
The way to reduce electrical charge of a droplet dispensed from a pipette tip
Dongwhi Choi, Horim Lee, Do Jin Im +1
Recently, our group reported that an any aqueous droplet dispensed from a pipette tip has considerable amount of electrical charge. This natural electrical charge of a droplet coul…