Importance of O(3P) atoms and OH radicals in hydrocarbon oxidation during the nonthermal plasma treatment of diesel exhaust inferred using relative-rate methods

2003 ◽  
Vol 35 (6) ◽  
pp. 231-238 ◽  
Author(s):  
John Hoard ◽  
Timothy J. Wallington ◽  
Richard L. Bretz ◽  
Alexander Malkin ◽  
Rajesh Dorai ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Diesel Exhaust ◽  
Relative Rate ◽  
Nonthermal Plasma ◽  
Hydrocarbon Oxidation ◽  
Oh Radicals

Toxicity of direct nonthermal plasma treatment of living tissue

2009 ◽  
Author(s):  
Danil Dobrynin ◽  
Sameer Kalghatgi ◽  
Gregory Fridman ◽  
Andrew Wu ◽  
Erica Podolsky ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Nonthermal Plasma ◽  
Living Tissue

scholarly journals Heterogeneous Bonding of PMMA and Double-Sided Polished Silicon Wafers through H2O Plasma Treatment for Microfluidic Devices

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 580
Author(s):  
Chao-Ching Chiang ◽  
Philip Nathaniel Immanuel ◽  
Yi-Hsiung Chiu ◽  
Song-Jeng Huang
Keyword(s):  
Plasma Treatment ◽  
Flow Rate ◽  
Gas Flow ◽  
Treatment Time ◽  
Optical Emission ◽  
Microfluidic Devices ◽  
Oh Radicals ◽  
Gas Flow Rate ◽  
Oh Groups ◽  
Plasma Treatment Time

In this work we report on a rapid, easy-to-operate, lossless, room temperature heterogeneous H2O plasma treatment process for the bonding of poly(methyl methacrylate) (PMMA) and double-sided polished (DSP) silicon substrates by for utilization in sandwich structured microfluidic devices. The heterogeneous bonding of the sandwich structure produced by the H2O plasma is analyzed, and the effect of heterogeneous bonding of free radicals and high charge electrons (e−) in the formed plasma which causes a passivation phenomenon during the bonding process investigated. The PMMA and silicon surface treatments were performed at a constant radio frequency (RF) power and H2O flow rate. Changing plasma treatment time and powers for both processes were investigated during the experiments. The gas flow rate was controlled to cause ionization of plasma and the dissociation of water vapor from hydrogen (H) atoms and hydroxyl (OH) bonds, as confirmed by optical emission spectroscopy (OES). The OES results show the relative intensity peaks emitted by the OH radicals, H and oxygen (O). The free energy is proportional to the plasma treatment power and gas flow rate with H bonds forming between the adsorbed H2O and OH groups. The gas density generated saturated bonds at the interface, and the discharge energy that strengthened the OH-e− bonds. This method provides an ideal heterogeneous bonding technique which can be used to manufacture new types of microfluidic devices.

scholarly journals Extracellular polymeric substance‐mediated tolerance of Pseudomonas aeruginosa biofilms to atmospheric pressure nonthermal plasma treatment

2020 ◽  
Vol 17 (12) ◽  
pp. 2000108
Author(s):  
Nid'a H. Alshraiedeh ◽  
Stephen A. Kelly ◽  
Thomas P. Thompson ◽  
Padrig B. Flynn ◽  
Michael M. Tunney ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
Extracellular Polymeric Substance ◽  
Nonthermal Plasma ◽  
Polymeric Substance

scholarly journals Effect of nonthermal plasma treatment on surface chemistry of commercially-pure titanium and shear bond strength to autopolymerizing acrylic resin

2016 ◽  
Vol 60 ◽  
pp. 37-44 ◽  
Author(s):  
Aljomar José Vechiato-Filho ◽  
Isabella da Silva Vieira Marques ◽  
Daniela Micheline dos Santos ◽  
Adaias Oliveira Matos ◽  
Elidiane Cipriano Rangel ◽  
...  
Keyword(s):  
Bond Strength ◽  
Surface Chemistry ◽  
Plasma Treatment ◽  
Shear Bond Strength ◽  
Pure Titanium ◽  
Nonthermal Plasma ◽  
Acrylic Resin ◽  
Commercially Pure Titanium ◽  
Commercially Pure

scholarly journals Atmospheric Chemistry, Sources, and Sinks of Carbon Suboxide, C<sub>3</sub>O<sub>2</sub>

2017 ◽  
Author(s):  
Stephan Keßel ◽  
David Cabrera-Perez ◽  
Abraham Horowitz ◽  
Patrick R. Veres ◽  
Rolf Sander ◽  
...  
Keyword(s):  
Atmospheric Chemistry ◽  
Relative Rate ◽  
Ambient Air ◽  
Rate Coefficients ◽  
Oh Radicals ◽  
Carbon Suboxide ◽  
Air Samples ◽  
Sources And Sinks

Abstract. Carbon suboxide, O = C = C = C = O, has been detected in ambient air samples and has the potential to be a noxious pollutant and oxidant precursor; however, its lifetime and fate in the atmosphere is largely unknown. In this work, we collect an extensive set of studies on the atmospheric chemistry of C3O2. Rate coefficients for the reactions of C3O2 with OH radicals and ozone were determined using relative rate techniques as k4 = (2.6 ± 0.5) × 10−12 cm3 molecule−1 s1 at 295 K (independent of pressure between ~ 25 and 1000 mbar) and k6 

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