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In this study, titanium dioxide (TiO 2 ) films were prepared on Corning glass substrates by radio frequency (RF) magnetron sputtering and treated without and with O 2 plasma conditions, and then were used to fabricate metal-semiconductor-metal (MSM) ultraviolet (UV) photodetectors (PDs). The effects of the changes on TiO 2 films were investigated by using field-emission scanning electron microscope (FE-SEM), photoluminescence (PL) system and four-point probe measurement. With a 360-nm illumination and 5 V applied bias, it was found that the responsivities of the fabricated TiO 2 PDs without and with 2 minutes O 2 plasma treatment were 36 and 153 A/W, respectively.

This paper applied DEFORM software to construct a 2-D analysis model of micro-cutting SKD61 mold steel, by utilizing local grid to distinguish the shear zone between material and chips so that the grid could show a certain amount of quadrilaterals. Then, different cutting conditions were experimented to simulate orthogonal cutting and change the tool geometry (rake angle and relief angle), cutting velocity and cutting depth, and failure criteria were utilized to simulate material fracture. Lastly, FEM model was employed to simulate chip formation in micro-cutting, and the result was consistent with the actual milling. Therefore, the micro-cutting model constructed by FEM model could be used to perform micro-milling performance analysis.

A very low power 8-bit CPU core has been designed based on an original pass-transistor logic family, the SPL (single-rail pass-transistor logic) and SPHL (single-rail pass-transistor and holders logic). The instruction set and external timings are compatible with the Zilog Z80. The average supply current is 740 /spl mu/A at 3 V with a 10 MHz-clock, equivalent to 26% of that of the commercial CMOS Z80 CPU cores using the same design rules.