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Your search keyword '"Narksitipan, Suparut"' showing total 24 results
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24 results on '"Narksitipan, Suparut"'

9. The electrical and mechanical properties of Au–V and Au–V2O5 thin films for wear-resistant RF MEMS switches.

Author

Bannuru, Thirumalesh, Brown, Walter L., Narksitipan, Suparut, and Vinci, Richard P.

Subjects
GOLD, OHMIC contacts, RADIO frequency, MICROELECTROMECHANICAL systems, THIN films, DISPERSION (Chemistry), PARTICLES (Nuclear physics)
Abstract

To explore alternatives to the use of pure Au in Ohmic contact RF microelectromechanical switches, we have measured changes in the electrical resistivity and nanoindentation hardness of a series of sputter deposited Au–V and Au–V2O5 thin films. Increasing V content in the Au–V alloys increases resistivity and hardness, which is consistent with solid solution strengthening. In the Au–V2O5 films, the increase in resistivity is greatly reduced and the hardness is further increased as expected for dispersion strengthening with V2O5 particles. These two phenomena are explained in terms of solute and particle effects on electron scattering and bowing of dislocations, respectively. [ABSTRACT FROM AUTHOR]

Published
2008
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10. The electrical and mechanical properties of Au-V and Au-[V.sub.2][O.sub.5] thin films for wear-resistant RF MEMS switches

Author

Bannuru, Thirumalesh, Brown, Walter L., Narksitipan, Suparut, and Vinci, Richard P.

Subjects
Dislocations -- Analysis, Gold alloys -- Electric properties, Gold alloys -- Mechanical properties, Hardness -- Analysis, Vanadium -- Electric properties, Vanadium -- Mechanical properties, Physics
Abstract

The electrical and mechanical properties of Au-V and Au-V[O.sub.x] alloys are examined. The electrical resistivity and nanoindentation hardness are described in terms of solute and particle effects on electron scattering and bowing of dislocations.

Published
2008

22. Preparation and Characterization of Cement-TiO2 Composites

Author

Kaewgabkam, Noosara, Jaitanong, Nittaya, and Narksitipan, Suparut

Abstract

Titanium dioxide (TiO2) is the most widely used photocatalyst because of its high photocatalytic activity and reasonably low cost. Moreover, TiO2 has strong chemical stability in a large variety of environmental conditions. The combination of TiO2 with cementatious materials has been widely investigated, and the effects of the TiO2 contents (10-40% by weight) were studied in this research. The crystalline structures and chemical compositions were analyzed using x-ray diffraction (XRD) and energy dispersive x-ray spectroscopy (EDS), respectively. Moreover, its microstructure was investigated by scanning electron microscopy (SEM). It was found that the intensity of CS and CH decreased with an increase in the TiO2 powder content. This was because when adding more TiO2 powder to the composite system, more water was needed to add to the hydration reaction.

Published
2015
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