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Ugg Canada Online Sales,from 0 5 K to 0 01 K

Ugg Canada Online Sales,from 0 5 K to 0 01 K

According to characteristics of temperature dependence of the forward voltage of silicon diode with a constant current supply the manufacture of the planar silicon transistor base-collector junction diode as cryogenic thermometers was carried out in Xi'an. The results of its performance tests at temperatures down to 1.6K are reported. By using it as a temperature sensor in a cryogenic temperature controlling system the precision of controlled temperatures is improved from 0.5 K to 0.01 K. The constructed temperature auto-controlling system could use a variety of types of thermometers as its Ugg Canada Online Sales temperature sensor with a signal output at voltage level of 0 – 3.2 v. Effect of a Ugg Boots Online Shop Canada pure binary phase filter on the three-dimensional light intensity distributions in focal region is theoretically investigated in this paper. The results show that the proposed binary phase filter may induce flat top profile with large depth of focus and reduced focal spot by properly adjusting the geometrical parameters of the binary phase filter of incident radially polarized hollow Gaussian beam (HGB) beam. On the other hand, the HGB beam benefits the most from the use of an annulus. Such kind of system is potentially useful for lithography, imaging, optical data storage, optical trapping, optical excitation of molecules, or coupling to optical fibers.
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