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A transient waveform digitizer circuit with continuous sampling capability and real-time programmable windowed trigger generation has been fabricated and tested. Designed in 0.25 ??m CMOS, the digitizer contains a circular array of 128 sample and hold circuits for continuous sample storage, and attains 2 GHz sample speeds with up to 2 GHz analog bandwidth. Sample clock generation adopts a semi-synchronous...
We demonstrate an optoelectronic tweezer (OET) integrating with a lensless, ultra wide-field imaging system for real-time interactive optical manipulation over a large field of view. This system enables, for the first time, simultaneous on-chip detection and optical manipulation of individual 10-mum microparticles, size of average mammalian cells, over an area of 6.55 times 4.92 mm2, a field of view...
A monolithic solid-state linear sensor array has been designed and fabricated in a 0.35 mum , 3.3 V, thin-oxide digital CMOS process. The sensor arrays are targetted at such instruments and applications as digital streak cameras, 2-D cameras for proton radiography, and fiber-optic array readout. The prototype consists of a 1-D linear array of 150 integrated photodiodes, followed by fast analog buffers...
A two-element sensor array was modeled. Preliminary results showed a significant difference of transmission coefficient level with the presence of the tumor and the decreasing level of the transmission coefficients when tumor shifts off the center. Moreover, an investigation carried out to study the effect of skin layer shows the skin layer reduces the coupling between two sensors and it is feasible...
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