This paper mainly describes a research of fabrication-technology of silicon magnetic-sensitive transistor (SMST) with rectangle-plank-cubic structure fabricated on silicon wafer by MEMS technique.An experiment researc...This paper mainly describes a research of fabrication-technology of silicon magnetic-sensitive transistor (SMST) with rectangle-plank-cubic structure fabricated on silicon wafer by MEMS technique.An experiment research on basic characteristic of the silicon magnetic-sensitive transistor was done.Anisotropic etching and reliable technique project were provided and applied in order to fabricate SMST with rectangle-plank-cubic construction.This means that a new kind of fabrication technology for silicon magnetic-sensitive transistor was provided.The result shows that the technique can be not only compatible with IC technology but also integrated easily,and has a wide application field.展开更多
In this article,taking advantage of the special magnetic shieldings and the optimal coil design of a transportable Rb atomic fountain clock,the intensity distribution in space and the fluctuations with time of the qua...In this article,taking advantage of the special magnetic shieldings and the optimal coil design of a transportable Rb atomic fountain clock,the intensity distribution in space and the fluctuations with time of the quantization magnetic field in the Ramsey region were measured using the atomic magneton-sensitive transition method.In an approximately 310 mm long Ramsey region,a peak-to-peak magnetic field intensity of a 0.74 n T deviation in space and a 0.06 n T fluctuation with time were obtained.These results correspond to a second-order Zeeman frequency shift of approximately(2095.5±5.1)×10^(-17).This is an essential step in advancing the total frequency uncertainty of the fountain clock to the order of 10^(-17).展开更多
文摘This paper mainly describes a research of fabrication-technology of silicon magnetic-sensitive transistor (SMST) with rectangle-plank-cubic structure fabricated on silicon wafer by MEMS technique.An experiment research on basic characteristic of the silicon magnetic-sensitive transistor was done.Anisotropic etching and reliable technique project were provided and applied in order to fabricate SMST with rectangle-plank-cubic construction.This means that a new kind of fabrication technology for silicon magnetic-sensitive transistor was provided.The result shows that the technique can be not only compatible with IC technology but also integrated easily,and has a wide application field.
基金supported by the National Natural Science Foundation of China(No.12004401)Ministry of Science and Technology of China(No.2013YQ09094304)。
文摘In this article,taking advantage of the special magnetic shieldings and the optimal coil design of a transportable Rb atomic fountain clock,the intensity distribution in space and the fluctuations with time of the quantization magnetic field in the Ramsey region were measured using the atomic magneton-sensitive transition method.In an approximately 310 mm long Ramsey region,a peak-to-peak magnetic field intensity of a 0.74 n T deviation in space and a 0.06 n T fluctuation with time were obtained.These results correspond to a second-order Zeeman frequency shift of approximately(2095.5±5.1)×10^(-17).This is an essential step in advancing the total frequency uncertainty of the fountain clock to the order of 10^(-17).
