EFFECTS OF THE RH ON MELAMINIC LAMINATES AND POLYMERIZED LINSEED OIL FILM-SURFACE ELECTRICAL CONDUCTIVITY

2008 ◽  
Author(s):  
LUCREZIA PALUMMO ◽  
GIULIO AIELLI ◽  
RINALDO SANTONICO ◽  
JOHNNY MIO BERTOLO ◽  
ANDREA BEARZOTTI
Keyword(s):  
Electrical Conductivity ◽  
Linseed Oil ◽  
Film Surface ◽  
Oil Film ◽  
Surface Electrical Conductivity

Structure and Electrical Properties of Pulsed Laser Deposited Amorphous Carbon Nitride Thin Films

2002 ◽  
Vol 750 ◽  
Author(s):  
Yoshifumi Aoi ◽  
Kojiro Ono ◽  
Kunio Sakurada ◽  
Eiji Kamijo
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Photoelectron Spectroscopy ◽  
Pulsed Laser ◽  
Film Surface ◽  
Input Power ◽  
Localized States ◽  
Active Nitrogen ◽  
Deposited Films

ABSTRACTAmorphous CNx thin films were deposited by pulsed laser deposition (PLD) combined with a nitrogen rf radical beam source which supplies active nitrogen species to the growing film surface. The deposited films were characterized by X-ray photoelectron spectroscopy (XPS), Raman scattering, and Fourier transform infrared (FTIR) spectroscopy. Nitrogen content of the deposited films increased with increasing rf input power and N2 pressure in the PLD chamber. The maximum N/C ratio 0.23 was obtained at 400 W of rf input power and 1.3 Pa. XPS N 1s spectra shows the existence of several bonding structures in the deposited films. Electrical properties of the deposited films were investigated. The electrical conductivity decreased with increasing N/C atomic ratio. Temperature dependence of electrical conductivity measurements indicated that electronic conduction occurred by variable-range hopping between p electron localized states.

Sliding Dynamics of a Water Droplet On Silicon Oil Film Surface

2021 ◽  
Author(s):  
Bekir Sami Yilbas ◽  
Anwaruddin Siddiqui Mohammed ◽  
Abba Abdulhamid Abubakar ◽  
Saeed Bahatab ◽  
Hussain Al-Qahtani ◽  
...  
Keyword(s):  
Water Droplet ◽  
High Speed ◽  
Film Surface ◽  
Maximum Velocity ◽  
Optical Transmittance ◽  
Gravitational Energy ◽  
Droplet Motion ◽  
Droplet Dynamics ◽  
Oil Film ◽  
Silicon Oil

Abstract A sliding droplet over the silicon oil film is examined and the dynamics of droplet motion are explored. The solution crystallized wafer surfaces are silicon oil impregnated and the uniform thickness oil film is realized. A recording facility operating at high-speed and the tracker program are used to monitor and evaluate the droplet dynamics during droplet sliding. The sliding behavior and flow generated in the droplet fluid are predicted by adopting the experimental terms. Findings revealed that the crystallized surface possesses the texture composing of spherules and fibrils, which give rise to 132o ± 4o contact angle and 38o ± 4o hysteresis. Oil impregnation on the crystalized surface improves the optical transmittance by three times for 250 nm to 500 nm wavelength range and almost 1.5 times after 500 nm to 850 nm wavelengths of the optical spectrum. The oil rim and ridges are developed in sliding water droplet vicinity while influencing droplet motion; however, this influence is estimated as almost 12% of droplet gravitational energy change during sliding. A circulatory flow is developed inside the droplet fluid and the maximum velocity in the droplet fluid changes as the droplet location changes on the oil surface during its sliding.

Investigation of diffusion alloying time on electrochemical behavior and conductivity of Nb-modified AISI 430 SS as PEMFC bipolar plate

2019 ◽  
Vol 66 (4) ◽  
pp. 520-526
Author(s):  
Fupeng Cheng ◽  
Jinglong Cui ◽  
Shuai Xu ◽  
Hongyu Wang ◽  
Pengchao Zhang ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Electrochemical Behavior ◽  
Surface Conductivity ◽  
Proton Exchange ◽  
Corrosion Mechanism ◽  
Content Type ◽  
Surface Electrical Conductivity ◽  
Aisi 430

Purpose The purpose of this paper is to improve the surface electrical conductivity and corrosion resistance of AISI 430 stainless steel (430 SS) as bipolar plates for proton exchange membrane fuel cells (PEMFCs), a protective Nb-modified layer is formed onto stainless steel via the plasma surface diffusion alloying method. The effect of diffusion alloying time on electrochemical behavior and surface conductivity is evaluated. Design/methodology/approach In this work, the surface electrical conductivity and corrosion resistance of modified specimen are evaluated by the potentiodynamic and potentionstatic polarization tests. Moreover, the hydrophobicity is also investigated by contact angle measurement. Findings The Nb-modified 430 SS treated by 1.5 h (1.5Nb) presented a lower passivation current density, lower interfacial contact resistance and a higher hydrophobicity than other modified specimens. Moreover, the 1.5 Nb specimen presents a smoother surface than other modified specimens after potentionstatic polarization tests. Originality/value The effect of diffusion alloying time on electrochemical behavior, surface conductivity and hydrophobicity of modified specimen is evaluated. The probable anti-corrosion mechanism of Nb-modified specimen in simulated acid PEMFC cathode environment is presented.

Facile preparation of highly electrically conductive films of silver nanoparticles finely dispersed in polyisobutylene-b-poly(oxyethylene)-b-polyisobutylene triblock copolymers and graphene oxide hybrid surfactants

RSC Advances ◽  
2015 ◽  
Vol 5 (124) ◽  
pp. 102462-102468 ◽  
Author(s):  
Chih-Wei Chiu ◽  
Gang-Bo Ou
Keyword(s):  
Electrical Conductivity ◽  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Triblock Copolymers ◽  
Film Surface ◽  
High Electrical Conductivity ◽  
Electrically Conductive ◽  
Conductive Films ◽  
Heat Treated ◽  
Facile Preparation

The melted morphologies revealed that the AgNPs possessed mobility, and melted on the film surface, giving a high electrical conductivity of 5.2 × 10−2 Ω sq−1 when heat-treated at 350 °C.

Surface electrical conductivity in ZnS(Cu, Cl, Mn) thin films

1986 ◽  
Vol 145 (1) ◽  
pp. 75-79 ◽  
Author(s):  
Z. Porada ◽  
E. Schabowska-Osiowska
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Surface Electrical Conductivity
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