 Posted: Sun 20:55, 12 Dec 2010 Post subject: tory burch PTB scientists have successfully achiev |
|
| PTB scientists have successfully achieved high-precision measurement of THz
thInterna-tionalSymposiumonInteractionoftheEffectsofMunitionswithStructures [A], 1999. [8] Du Xiaosong,tory burch, Yang Bang-Chao, et al. Yb film piezoresistive high-pressure properties of the quasi-static [J]. Instrument Technique and Sensor ,2000,9:12-14. [9] Teng Lin,ugg boots günstig, Yang Bang-Chao, Du Xiaosong, et al. Yb film piezoresistive sensitivity of the sensor [J]. High Pressure Physics, 2004,ugg stivali,18 (1) :90-93. [1O] Teng Lin, Yang Bang-Chao, Du Xiaosong, et al. Ytterbium thin films by magnetron sputtering and piezoresistive properties of [J. Vacuum Science and Technology, 2004,24 (6) :472-480. [11] Ding Shijing, Yushang Jiang, et al. Ytterbium foil large pressure sensor design and production [J]. Sensor World, 2004,10 (7) :19-21. PTB scientists successfully detected THz NIST high-precision measurements of helium ion microscopy technology, according to foreign media reports on September 25, for the first time, wide wavelength range of the THz waves were successfully accurate measurement of terahertz radiation detectors. This technology results from the German PTB and the German national metrology institute. THz wavelength range 30 ~ 3000tam, Dayton rate range 0.1 ~ 10THz, can penetrate clothing and other organic substances, substances can also provide spectral information, such as explosives and other substances. Terahertz Technology airport security checks can become easier and more thoroughly in the future the harmful ray may also be abandoned. However, the precise measurements of THz is the problem lies. Complete spectral information to be THz detector response. To date a few days ago, THz can be to respond, but the spectral information is lost. PTB in the cavity radiator (car-ityradiators) with the help of an optical potential success of the first response, the wavelength range from 50m to 600tam. First measurement of terahertz radiation through strider, and then calculated according to Planck's radiation law, PTB uses two cavity radiators keep the temperature does not ask to connect long-wave THz band-pass filter (THzbandandlongwave-passfilters). The internal surface coated with a radiation known high range of materials, terahertz radiation, increasing the intensity of radiation received by the detector. In order to obtain sufficient purity of terahertz radiation radiation, inhibition of more than 9 orders of magnitude of the infrared radiation is necessary. By using infrared spectroscopy, through the filter system in the wavelength range 0.8tam to 1700m. The radiator according to the known volume and filter through the amount of radiation that can accurately calculate the spectral flux, into the receiver to calculate precise terahertz spectral response. Therefore, the future use of this PTB terahertz receivers measure the properties of materials, and to explore the terahertz radiation, the life cycle of cells. U.S. National Institute of Standards and Technology (NIST) researchers are testing the latest microscope technology. The technology can further enhance the measurement of nanoscale objects, accuracy,stivali ugg, and more accurate measurement of nano-scale manufacturing of semiconductor and nanotechnology products have set standards and improve is very important. Helium ions with helium ion microscope technology wave signal generated imaging to help small objects, this technology is very similar to the 60's last century, commercial applications of scanning electron microscopy (SEM). However, surprising is that the volume and quality of the helium ions much larger than the electron, but it can help people get higher contrast, more resolution imaging of small objects. In addition, the new technology has a better depth of field, and thus a clear image larger objects. NIST Measurement of nano-scale scanning electron microscopy group project leader Andras? Fu Lada said that the phenomena are physical areas,ugg prezzo, the quality of major ions than electrons, wave length, which can help people get better imaging. He said the introduction of new imaging technology appears to have a microscope to obtain three-dimensional, clearly shows the details of the object is less than 1 nm. In the silicon crystal, a nanometer is only across the three atoms. Currently, NIST researchers are r solutions of new technology in depth imaging mechanism. Compared to scanning electron microscopy, helium ion microscope most famous are the advantages of imaging can show the actual situation of the edges of objects, which is very important in terms of precision manufacturing. N1ST contribution of ... foot Fu Lada development of \clear, sharper imaging. (Source: \ 相关的主题文章： ugg stivali Pulse heating of thermal properties me tory burch Correlation coefficient in the mechanic ugg milano Throttling device to expand the scope o |
|
