Infrared imaging fault detection which is treated as an ideal,non-contact,non-destructive testing method is applied to the circuit board fault detection.Sin
Infrared-to-visible upconversion emission intensities are investigated in Li+/Er3+,Li+/Ho3+/Yb3+ and Li+/Tm3+/Yb3+ codoped oxide nanocrystals.By introducing
Diffraction is one of the universal phenomena.It affects all classical wave fields without exception.In statistical optics,the coherence function of optical
本文以煤为原料,通过选用不同形状造孔剂调节炭膜的孔结构性能,系统地考察了造孔剂添加量及造孔剂形状对炭膜孔结构性能、机械强度和导电性的影响。同时研究了不同孔结构炭膜对高浓度罗丹明B溶液的处理性能,实验结果表明:(1)PVB和聚丙烯有机纤维造孔剂热解后析出气溢出分别留下海绵状孔和直通孔,添加混合造孔剂炭膜具有直通孔贯通大量海绵状孔的多级孔道结构,炭膜最大孔径和平均孔径增大;炭膜的孔隙率、最大孔径、平均
Distributed optical fiber sensing technologies and corresponding instruments have been greatly developed in the recent 30 years.Many instruments such as opt
1951年4月,庞先健生于上海。从20世纪70年代开始创作连环画至今,已经有四十多个年头了,创作有《创业史》《蒋筑英》《玄武门之变》《孙子兵法》《三十六计》等一大批优秀的连
1.a fast ATP method based on integral chopper 2.Because of using the integral chopper,integration time of offset signal to capacitance is controlled by the
The negative refractive index characteristics of one-dimensional photonic crystal consisted by Fibonacci multi-layer films has been studied by numerical met
As a novel optoelectronic device,the liquid lens has the advantage of fast zoom,low cost,small size and low energy consumption.Philips and Varioptic already
Conformal imaging systems are confronted with dynamic aberration in optical design processing.In classical optical designs,for combination high requirements