Low pressure plasma treatment using radiofrequency (rf) discharge of argon gas was employed to improve the hydrophilicity of polypropylene.
The operating conditions were as follows: radiofrequency power, 1,240 W; Argon plasma gas (15 L/min), carrier gas (0.8 L/min), and makeup gas (0.27 L/min); sampling depth, 8.5 mmol/L; operation mode, shield torch; acquired mass, 118; points/mass, 3.
In this paper, thin films of CaTiO3 Pr3+ are deposited by radiofrequency sputtering technique in pure argon and post-treated by Rapid Thermal Annealing (RTA).
The electrochemical study showed that the electrochemical reactivity of the treated electrodes was strongly dependant on radiofrequency power, treatment time and argon gas pressure.
Endoscopic therapy can take the form of a dissection of the superficial layers of the oesophageal lumen (endoscopic mucosal or sub-mucosal resection) or generalised mucosal ablation (e.g., radiofrequency ablation, photodynamic therapy or argon plasma coagulation).
In recent years, there has been a paradigm shift in the treatment of HGD in BE from oesophagectomy to endoscopic therapy, with focal ablation of nodular disease (endoscopic mucosal resection (EMR)) and field ablation of residual flat dysplasia (photodynamic therapy (PDT), argon plasma coagulation, radiofrequency ablation and cryotherapy).
Argon beam coagulator is a monopolar coagulator which utilizes a beam of argon gas to deliver a radiofrequency electric current to the tissues.
A radiofrequency power of 1.2 kW and a nebulizer argon flow of 1.0 L min−1 were selected.
The RP-CVD coatings deposited on a silicon substrate were then modified by treatment with a direct radiofrequency (RF) plasma process induced in a mixture of argon and water vapour (Ar/H2O), which resulted in the surface activation through the formation of highly reactive silanol groups (SiOH).
