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While silicon carbide (SiC) has been found to be a desirable mirror material due to its excellent thermal and mechanical properties, the optical performance of SiC mirrors might be limited by the internal defects introduced in fabrication. Therefore, it is necessary to evaluate the internal conditions of SiC mirror parts before integrating the mirror. This paper presents using a 64-element 30 MHz...
This paper make experiments and analyze with the acquisition system of multichannel weak photocurrent for Laser particle size analyzer. It is found using analog multiplexers directly switching multi-channel photocurrent will have a pulse spike. Through the analysis of photocurrent source output port, it was found that distributed capacitance will cause a pulse spike after switch closed. Then proposed...
A novel design has been undertaken to introduce solid resonant motion actuation in flat panel loudspeakers. The actuation of the vibration is obtained using direct magnetostrictive actuators or amplified magnetostrictive actuators with flexure hinges. Instead of one or two exciters, the proposed panel speakers have several micro-transducers vibrating coherently to produce sound and to form a Distributed...
The disk I/O performance may be the bottleneck in computer system, because of the mechanism characters of hard disk system. In order to tune the system performance effectively, the collection of the disk I/O workload characteristics is the essential step for the performance optimization work. Compared to other I/O characteristics collection method, this paper presents a kind of efficient on-line I/O...
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