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Herein, the investigations conducted in the area of aluminum (Al) matrix composites reinforced with carbon nanotubes (CNTs) are presented. The application of CNT reinforcement in Al alloys is driven by its exceptional chemical and mechanical properties. The critical issues in the processing techniques, challenges in the interfacial mechanisms between the Al matrix and CNTs, and strengthening effects...
In this paper, we present a single chip nanosensor composed of Single-Walled Carbon Nanotubes (SWNTs) integrated on complementary metal oxide semiconductor (CMOS) circuitry with custom designed on-chip amplifiers for chemical agent detection. The SWNTs were integrated on CMOS circuitry utilizing a low temperature and low voltage Dielectrophoretic (DEP) assembly process. Furthermore, we incorporated...
Single-Walled Carbon Nanotubes (SWNTs) are reported to be very sensitive to numerous odors and could serve as the next generation of miniature gas sensors. Recently, we have shown that SWNTs functionalized with DNA hold even greater promise than bare SWNTs as high sensitivity gas sensors. The DNA-decorated SWNT gas sensors were integrated on CMOS circuitry with built-in amplifiers. In the paper, we...
In this paper, we present a suspended Single-Walled Carbon Nanotube (SWNT) based pH sensor utilizing a low temperature Dielectrophoretic (DEP) assembly process on a flexible parylene-C substrate. Parylene-C, a light weight, flexible and inert material, is compatible with many microfabrication processes. Furthermore, utilizing parylene-C as a flexible substrate, one can readily create a suspended microplatform...
In this work, a directed assembly technique for controlled micro-patterning of single-walled carbon nanotubes (SWNTs) on to a flexible parylene-C substrate has been demonstrated. A simple site-selective fluidic assembly of SWNTs has been utilized to directly assemble SWNTs on a plasma treated parylene-C substrate to form ordered high density carbon nanotube networks. Continuous nanotube micro-arrays...
In this paper, we demonstrate the integration of single-stranded-DNA (ss-DNA) decorated single-walled carbon nanotubes (SWNT) onto complementary metal oxide semiconductor (CMOS) circuitry for gas sensing applications. Utilizing dielectrophoresis (DEP) assembly, a simple and a low temperature process, we first demonstrate integration of SWNTs onto CMOS circuitry at the die level. SWNTs are sensitive...
We present a novel three-dimensional thermal sensor based on Single-Walled Carbon Nanotubes (SWNTs) utilizing dielectrophoretic (DEP) assembly. The sensor is fabricated using a hybrid assembly technique combining top down (fabrication of the microplatform) and bottom up (DEP assembly) approaches. Encapsulating the structure with a thin (1mum) parylene layer protects it from the environment and also...
We present the design, fabrication and mechanical testing results from Parylene-Carbon Nanotube (CNT)-Parylene composite-films. Utilizing SWNT materials as the active layer, we have fabricated flexible devices consisting of 10 mum thick parylene membranes wrapped around active SWNTs. The tensile test results show that parylene-CNT-parylene sandwich has a linear-elastic response up to a strain value...
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