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Graphene-based nanosensors with inter-layer structures were built and tested as gas sensors in response to ethanol and water molecules, and were compared with intra-layer nanosensors built on mono-layer and bi-layer graphenes. Ethanol and water molecules were chosen because they act differently as donors and acceptors to graphenes. The results show that the sensitivities of the inter-layer graphene...
This paper introduces the concept of nanoelectromechanical systems on a tip (NEMS-on-a-tip). As an example, force sensors based on the interlayer electromechanical coupling of individual multi-walled carbon nanotubes (MWNT) are designed with various configurations. The devices are fabricated and characterized using nanorobotic manipulation inside a scanning electron microscope (SEM). Experimental...
Robotic manipulation at the nanometer scale is a promising technology for structuring, characterizing and assembling nano building blocks into nanoelectromechanical systems (NEMS). Combined with recently developed nanofabrication processes, a hybrid approach to building NEMS from SiGe/Si/Cr nanocoils and Si/Cr nanospirals is presented. Nanosensors and nanoactuators are investigated from experimental,...
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