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This paper reports the fabrication and characterization results of a silicon micro mirror fabricated by integrated of top-down fabrication of CNTs thin film and conventional micromachining. The silicon mirror is suspended by CNT hinge and actuated by using electrostatic force through angular vertical comb system. The performance of the mirror had been characterized. Thanks to the excellent mechanical...
Electrostatic oscillations of conductive CNT bundles have been successfully demonstrated in air environment. Three unique characteristics have been observed and characterized. First, CNT bundles have been constructed by a simple “pick, stick and break” process using a regular probe tip from vertically aligned CNT forest on a silicon substrate. Second, CNT bundles have been actuated statically under...
Various silicon-based microchannels with different internal surface morphology is investigated to grow CNTs (carbon nanotubes) on the surface of the pore wall which may enhance the electron emission. The morphology of the samples prepared under different conditions is determined by scanning electron microscopy (SEM). Parameters such as temperature, concentration of hydrofluoric acid, potential, current...
A class of carbon-nanotube (CNT) composite materials was developed to take advantage of the precise high-aspect-ratio shape of patterned vertically grown nanotube forests. These patterned forests were rendered mechanically robust by chemical vapor infiltration and released by etching an underlying sacrificial layer. We fabricated a diverse variety of functional MEMS devices, including cantilevers,...
In this work we present an experimental study of the electromechanical behavior of suspended, taut, single walled carbon nanotubes (SWCNTs). A novel top-down fabrication process was developed in order to integrate the suspended SWCNTs into silicon MEMS structures fabricated using conventional micro-machining techniques. The resonant response of suspended SWCNTs under a time-varying electric field...
This paper describes an integration method of bridging-structural single-walled carbon nanotubes (SWNTs) onto the flexible PDMS sheet by stamping transfer. Silicon microstructures and the SWNTs which directly synthesized between the gaps of the microstructures were lifted off by PDMS stamp sheets with high yield (97.8%) and accuracy (position error <100 nm). From the SEM observation of our transferred...
In this work, silicon microchannel coolers were made using the deep ion reactive etching (DIRE) technique. Stable and homogeneous carbon nanotube (CNT) suspension was also prepared. Meanwhile, a closed-loop cooling test system was developed to investigate the heat removal of the silicon microchannel cooler with different coolants. The experimental setup included a test module, a minipump for providing...
In this paper, we have proposed, fabricated and characterized a parallel electron beam micro-column with single-stranded carbon nanotube (CNT) filed emitters. The integrated micro-column consists of a self-aligned CNT field emitter array (FEA), and a multi-layered electrostatic Si focusing lens array. In our design, the emitters, gate and electrostatic lens array are electrically isolated, and each...
Micromachining is an extended IC fabrication based on photo-fabrication, deep etching, anodic bonding and other advanced process technologies. This is used to produce MEMS (Micro Electro Mechanical Systems) featuring multi-functions, small size and low cost. Nanostructures such as CNT (Carbon Nano Tube) can be also included in the MEMS by nanomachining. MEMS are used as value added key components...
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