scholarly journals A Comparative Evaluation of Contact Angle Changes on three Topical Surfactant Application and Exposure to Radio-Frequency Glow Discharge

2017 ◽  
Vol 10 (1) ◽  
pp. 381-388 ◽  
Author(s):  
K. M. Mathew ◽  
Saji. P ◽  
Raza Mohamed ◽  
P. Sesha. Reddy ◽  
Ashish R. Jain ◽  
...  
Keyword(s):  
Contact Angle ◽  
Glow Discharge ◽  
Radio Frequency ◽  
Comparative Evaluation ◽  
Radio Frequency Glow Discharge

Ion Kinetic Energy Determinations in Radio-Frequency Glow Discharge Mass Spectrometry

1995 ◽  
Vol 49 (7) ◽  
pp. 917-926 ◽  
Author(s):  
Paula R. Cable ◽  
R. Kenneth Marcus
Keyword(s):  
Kinetic Energy ◽  
Glow Discharge ◽  
Radio Frequency ◽  
Source Region ◽  
Potential Method ◽  
Operating Conditions ◽  
Atmospheric Plasma ◽  
Radio Frequency Glow Discharge ◽  
Ion Trajectory ◽  
Ion Kinetic Energy

Radio-frequency glow discharge (rf-GD) sources produce an abundance of both atoms and ions. For the mass spectrometric application of the glow discharge technique, knowledge of the ion kinetic energies is required to optimize extraction and focusing of ions from the source region into the analyzer. This paper details kinetic energies experimentally determined with the use of the “retarding potential” method. For this study, the analyzer quadrupole of a double-quadrupole mass spectrometer was positively biased to act as a repeller. Ion kinetic energies (IKEs) determined for a variety of discharge and analyzer operating conditions ranged from 12.5 eV to 25.0 eV for 63Cu+. Kinetic energy measurements were confirmed from ion trajectory simulations and follow closely the experimental values for identical analyzer conditions and initial IKEs. Results of this study indicate that the conditions under which ions are formed (plasma conditions) affect IKEs and energy spreads to a greater extent than analyzer parameter variations. Different from atmospheric plasma sources, IKEs for rf-GD species do not vary as a function of ion mass/identity. Evidence is also given in support of a slight mass biasing owing to the transmission properties of double-quadrupole analyzers. The findings detailed herein demonstrate the effects of rf modulation on both ion kinetic energy values and distributions.

scholarly journals Highly-reactive haloester surface initiators for ARGET ATRP readily prepared by radio frequency glow discharge plasma

2019 ◽  
Vol 14 (4) ◽  
pp. 041006 ◽  
Author(s):  
Marvin M. Mecwan ◽  
Michael J. Taylor ◽  
Daniel J. Graham ◽  
Buddy D. Ratner
Keyword(s):  
Glow Discharge ◽  
Radio Frequency ◽  
Discharge Plasma ◽  
Glow Discharge Plasma ◽  
Radio Frequency Glow Discharge ◽  
Arget Atrp

Silanization of radio frequency glow discharge modified expanded poly(tetrafluoroethylene) using (aminopropyl)triethoxysilane

Langmuir ◽  
1991 ◽  
Vol 7 (1) ◽  
pp. 142-151 ◽  
Author(s):  
Daniel J. Hook ◽  
Terrence G. Vargo ◽  
Joseph A. Gardella ◽  
Kevin S. Litwiler ◽  
Frank V. Bright
Keyword(s):  
Glow Discharge ◽  
Radio Frequency ◽  
Radio Frequency Glow Discharge
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