A laser interferometer system can be used to measure the straightness of an object. A typical Hewlett-Packard's straightness interferometer system uses a Wollaston prism to split a laser beam traveling along a principal axis into two secondary beams. However, the resolution and the range of the resp.....
[更多]
The major part of multimedia applications (such as video conferencing and digital TV broadcasting) is video processing due to its high encoding complexity. The objective of current advanced video standards (including H.264 and AVS) is to achieve higher coding efficiency. In order to meet the objecti.....
[更多]
Photonic band gap (PBG) materials are those periodic composites that possess spectral gaps in the frequency spectrum, in which electromagnetic waves cannot propagate in any direction within the material. Conventional PBG are based on Bragg scattering which limits the size of PBG structures for low-f.....
[更多]
Carbon nanostructures, such as carbon nanotubes and micro-scaled carbon inverse opal, show special physical, chemical and mechanical properties. Their fabrication has been a very active and highly competitive area of research. With the development of micro- or nano- gas sensors and bio-sensors, more.....
[更多]
Portable electronic devices such as laptop computers, personal digital assistants, and portable DVD players and the like have become increasingly common and popular. One reason for the success of such devices is the advance in the technology of low power, lightweight and inexpensive flat-panel displ.....
[更多]
| |< <- | [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] | -> >| |
