Showing papers by "Iran University of Science and Technology published in 1982"
TL;DR: A thermopile infrared detector fabricated using silicon integrated-circuit technology is described in this paper, which uses a series-connected array of thermocouples whose hot junctions are supported by a thin silicon membrane formed using anisotropic etching and a diffused boron etch stop.
Abstract: A thermopile infrared detector fabricated using silicon integrated-circuit technology is described. The device uses a series-connected array of thermocouples whose hot junctions are supported an a thin silicon membrane formed using anisotropic etching and a diffused boron etch stop. The membrane size and thickness control the speed and responsivity of the structure, which can be designed for a given application. For a 2-mm × 2-mm × 1-µm silicon membrane containing sixty bismuth-antimony couples, the structure produces a responsivity of 6 V/W and a time constant of about 15 ms. The use of polysilicon-gold couples can improve the responsivity to nearly 10 V/W while maintaining the same speed, simplifying the process, and retaining compatibility with on-chip signal processing circuitry.
124 citations
TL;DR: In this paper, a non-stationary stochastic model is proposed for seismic records of P-waves from underground nuclear explosions and natural earthquakes, and two discriminating procedures are described and one is illustrated numerically using available records.
5 citations
TL;DR: In this paper, a non-stationary model for seismic P-waves from underground nuclear explosions is presented. Results of fitting this model are compared with findings of Toksoz, Ben-Menaheim and Harkrider (1964) and Helmberger and Harksrider (1972).
4 citations