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This paper demonstrates a new paradigm for realization of functional devices on CMOS die/wafer based on nanomaterials such as carbon nanotubes and graphene, for chemical and biological sensing. This is made possible through a post-CMOS directed assembly approach based on dielectrophoresis (DEP); a low-cost, maskless approach electric-field based technique that is compatible for high throughput assembly...
This paper reports a technique for manipulation of carbon nanotubes (CNTs). A photoconductive layer capable of generating a non-uniform electric field at illuminated sites was used to optically induce dielectrophoretic forces for manipulating CNTs. The light patterns enabled a variety of flexible modes for CNT manipulation since it was possible to dynamically reconfigure the optical patterns. This...
In recent years, there has been an increasing interest in monitoring and controlling of pH. It has become an important aspect of many industrial wastewater treatment processes. At the same time, the demand for smaller electronic devices used for various industrial and commercial applications has greatly increased. Micro and nano materials, such as Carbon Nanotubes (CNTs) are known for their excellent...
Effect of thiol to the sensing characteristics of gas sensors based on carbon nanotubes(CNTs) were studied. Sensors were divided into three groups: pure CNTs coated on Au electrode; thiol-CNTs coated on Au electrode; pure CNTs coated on Au electrodes modified with alkanethiol self-assembled monolayers(SAMs). When exposed to formaldehyde of different concentration at room temperature, obvious differences...
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