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In this study, we fabricated in-plane thermoelectric micro-generators (4 mm times 4 mm) based on bismuth telluride thin films by using flash evaporation method. The thermoelectric properties of as-grown thin films are lower than those of bulk materials. Therefore the as-grown thin films were annealed in hydrogen at atmospheric pressure for 1 hour in a temperature range of 200 degC. to 400degC. By...
A 53 dB gain limiting amplifier for OC-192 and 10 GbE applications is developed in a 50 GHz fT SiGe SOI complimentary bipolar process, and has 5 mV pk-pk sensitivity, 1.25 V pk-pk maximum input signal, 14 ps (20/80%) rise/fall times and 450 mV pk-pk output into matched differential 50 Ohm loads, consuming 430 mW on a 3.3 V supply. Input Cherry-Hooper gain stages limit the -3 dB bandwidth to 11 GHz...
A system for measurement of the surface magnetooptic Kerr effect (dubbed "SMOKE") has been developed. Measurement sensitivity is 5??10??4 degrees, and the absolute value of the rotation angle can be measured. The Kerr rotation, ??K, and ellipticity ??K, of Co thin films deposited on glass substrates in ultra-high vacuum were measured in-situ. When the film thickness was greater than 80 ??,...
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