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Design of a new silicon readout circuit for infrared focal plane array (IR FPA) detectors which, alongside with the formation of thermographic images, offers an additional function of direct measurement of the time of fight of optical signals due to reflected laser pulses is reported. Such multielement IR FPA detectors enable the formation of three-dimensional images (via determination of the distance...
We have developed a novel three dimensional tactile sensor based on vertically aligned carbon nanotubes. The carbon nanotubes were directly synthesized on silicon microstructures and these CNTs-on-microstructures were integrated to flexible polydimethylsiloxane layers. Each tactile sensor has four sensing parts and the direction of force can be detected by monitoring the increase or decrease of electrical...
We report a multi nozzle electrohydrodynamic (EHD) printing head by using batch fabrication for the first time. Inks can be ejected from a glass nozzle by applied large electric field. Tiny nozzles with a outer diameter of 100 microns are fabricated by sand blasting on a glass wafer. A stable continuous jetting with a commercial carbon black ink was observed. Continuous lines with a width of 30 microns...
We have demonstrated a novel method utilizing carbon nanotube (CNT) arrays as latching surface for silicon plastic deformation applications where the high temperature process is required. The CNT arrays integrated on microstructures maintain the strained shapes of the microstructures in the high temperature environments. In order to demonstrate the proposed method, arrays of angular vertical comb-drive...
The vertically aligned carbon nanotube (CNT)-bundle is utilized as a mechanical buffer for inertial micro-switch to extend the contact time and therefore to obtain reliable and stable output signals. The CNT bundles are directly synthesized on two facing surfaces of both movable- and stationary electrodes by patterning the catalyst on released microstructures and the following thermal chemical vapor...
The performance of employees of small and medium-sized enterprises (SMEs) is usually evaluated by supervisors' perceptions, recognitions and preferences. This phenomenon is very common in Taiwanese family controlled enterprises. To improve this inequitable performance evaluation structure, a multi-criteria decision method associated with fuzzy sets is proposed. The ranking approach integrates the...
This work demonstrates a capacitive RF (radio frequency) MEMS (micro-electromechanical systems) switch, which is actuated by electro-thermal force and electrostatic force at the same time, and than latching the switching status by electrostatic force only. Since thermal actuator need relative low voltage compare to electrostatic actuator, for electrostatic force need almost no power to maintain the...
An innovative design of high sensitivity capacitive microphone is described in this paper. The condenser microphone is made by micro-electro-mechanical systems (MEMS) fabrication technology. The advantages of MEMS microphone are small size and low cost. Besides, surface mount technology (SMT) compatible is an important reason for application. Basic structures of the silicon condenser microphone include...
Theoretical and experimental investigations were performed on a double layer anti-reflection (DLAR) coating of MgF 2 /CeO 2 . We investigated CeO 2 films as an AR layer because they have a proper refractive index of 2.46 and demonstrate the same lattice constant as the Si substrate. An optimized DLAR coating showed a reflectance value as low as 1.87% over wavelengths ranging...
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