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In this paper, we introduce the 3D design of a vector light sensor for angular proximity detection applications. The sensor structure is based on creating photo sensors on side walls of micro-sized (micron scale) mesa pyramids etched in silicon. On each facet of the mesa pyramid, p-n junctions are formed and used as photodiodes. Unlike planar pixels, this 3D pixel design allows for estimation of the...
In this paper, we propose a novel design for a three dimensional proximity sensor. The novel design takes advantage of rapid prototyping capabilities offered by 3D printing to produce mesa pyramids with a 55 ° base angle that comprise a two-pixel system. The two pixel system combines photoconductivity and plane wave propagation properties of a radiative source to approximate the source distance as...
Uncooled infrared micro bolometer detectors have gained increasing attention for military and commercial imaging applications. Due to their light weight, low power, response in the infrared region, and compatibility with readout integrated circuits, traditional thermo-resistive vanadium oxide based micro-bolometers have become popular compared to pyro-electric and photo-detectors. Traditionally, VOx...
In this paper, we report on the use of multilayered carbon nanotubes and graphene films for the fabrication of temperature sensitive resistors. Multi-walled carbon nanotubes and graphene based films have been demonstrated to have moderate temperature coefficient of resistance (TCR) and wideband IR absorption efficiency. It is demonstrated that by incorporating these nanoparticles into a thermally...
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