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This paper presents the design of a dynamic vision sensor for mobile applications. The sensor features a standby mode with less than 250uW of power dissipation. The sensor changes operation mode between standby and normal operation itself depending on input activity. The power consumption in normal operation mode is typically 500uW and activity dependent. The sensor design is implemented in a 90nm...
This paper presents a circuit of a digitized position decoder circuit for brain PET consisting of Silicon Photomultiplier (SiPM). Difference of proposed circuit and traditional circuit is the existence of analog-to-digital convertor (ADC). In this work, we conclude that the combination of ADC, field programmable gate array (FPGA) and digital data acquisition (DAQ) board can be substitute for an existing...
4F2 selector-less crossbar array 2Mb ReRAM test chip with 54nm technology has been successfully integrated for high cell efficiency and high density memory applications by implementing parts of decoders to row/column lines directly under the cell area. Read/write specifications for memory operation in a chip are presented by minimizing sneak current through unselected cells. The characteristics of...
This paper presents the reduction of frictional drag by using the slip on the interface of convex air bubble. The visualization shows that the convex bubbles formed naturally in the hydrophobic cavity array positioned along a microchannel with time. The size of the bubbles depended on the size of the cavity size. The velocity distribution was also displayed by using a micro-PIV measurement. Then,...
We present the design, fabrication and testing of a high-resolution ground reaction sensor cluster (GRSC) as an auxiliary sensor for pedestrian navigation. The GRSC consists of a flexible high-density array of compressible, elastomeric capacitive pressure and two-dimensional shear sensors. When placed at the heel of a boot, the 169-cell GRSC measures detailed information about the position and motion...
We study log periodic nanoresonators on VO2 thin film, amplifying available dynamic range for extinction and transmission. Over 1,000:1 extinction ratio for the nano-pattern is achieved when the film undergoes insulator-to-metal phase transition, compared with 10:1 ratio for the unpatterned cases.
A 4-channel CMOS VCSEL driver array is implemented in 0.13-mum CMOS technology. The optical transmitter drives VCSEL array, operating up to 10-Gb/s with APC (5-20-mA) and AMC (5-15-mApp) loops to obtain constant and reliable optical output power. To enhance the bandwidth of the pre-amplifier, active feedback technique with negative impedance compensation (NIC) is exploited. A single channel VCSEL...
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