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The ability of carbon nanofibers grown on nanoelectrode chips for ultrafast detection of molecules down to parts per billion (ppb) with a response time in seconds and with a minimal usage of power has attracted the attention of materials researchers and nanotechnology explorers—for example, space research organizations. Application in chemical and biological sensing is being studied extensively. NASA...
Polymer nanocomposites are defined as polymers in which small amounts of nano-meter size fillers are homogeneously dispersed by only several weight percentages. Addition of just a few weight percent of the nano-fillers has profound impact on the physical, chemical, mechanical and electrical properties of polymers. In this paper, PMMA - TiO2 nanocomposite is synthesized and its characteristics are...
In the present study, the spark plasma sintering technique is used to densify commercial alloy NiCoCrAlYTa. NiCoCrAlYTa powders are sintered at temperatures ranging between 1073??K and 1273??K to yield various microstructures. Full compaction is achieved in a short period of time and the overall processing duration does not exceed 30 min. Microstructure and porosity evaluations were conducted using...
Decreasing the length of thermoelectric (TE) module legs results in a significant increase in power density, both for cooling applications and electricity generation. However, this reduction also results in a significant increase of mechanical stress in the legs materials. Thus, it is important to implement an effective method to characterize the mechanical properties, such as mechanical spectroscopy,...
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