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Various sensing characteristic of carbon nanotube synthesized by low press chemical vapor deposit (LPCVD) method have been studied. The composite sensing film of silicon dioxide and multi-wall nanotubes (SiO 2-MWNTs) is sensitive to methane. The various characteristic such as sensitivity, repeatability, reliability and cross-sensitivity of SiO2-MWNTs composite film gas sensor have been studied. Having...
A new ionomer of sulfonated ethylene vinyl alcohol copolymer, EVOH-g-SO3H was synthesized and the ionic polymer metal composite (IPMC) based on EVOH-g-SO3H polymer has been produced through electroless deposition of platinum on the bare polymer membranes. The actuation performance for IPMC actuator was tested in order to set up a relationship between the structure and the behavior. The morphology...
The relation of direct proportion between absorbance and nanometer grain content is educed by analysing the extinction law which the monochromatic light passes turbid solution of nanometer grain. The feasibility mensurating nanometer grain content for complex material by spectrophotometric method is verified according to the composite deposit of Ni-P/alpha-Al2O3 (30nm). The results show that the standard...
In this paper, the multiwall carbon nanotubes were opened and then filled with Cu and Ag materials. Several kinds of carbon nanotubes/epoxy composites were prepared by melt mixing epoxy resin and the nanotubers mentioned above. The dielectric properties of the composites were investigated at room temperature. Experimental results showed that the dielectric properties of the MWNTs/epoxy composites...
Carbon nanotube (CNT) is a useful material for gas sensing applications because of its high surface to volume ratio structure. In this work, multi-wall CNTs are incorporated into tin oxide thin film by the means of powder mixing and electron beam evaporation and the enhancement of gas-sensing properties is presented. The CNTs were combined with SnO2 powder with varying concentration in the range of...
The bulge test was successfully extended to the determination of the fracture properties of silicon oxide/silicon nitride thin film sandwiches. This was achieved by using long membranes and applying a comprehensive mechanical model describing the mechanical response of these membranes deflected into a plane-strain deflection profile under a differential pressure. The model is able to cope with thin...
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