Academic Areas: Gravitational experiment and theory
2003-2007, Department of Physics, Huazhong University of Science and Technology, Bachelor of Science, achieved in June 2007;
2007-2013, School of Physics, Huazhong University of Science and Technology, Doctor of Science, achieved in June 2013, advisor: Prof. Jun Luo, Doctoral dissertation topic: “Research of systematic errors in G measurement with time-of-swing method”.
Associate Professor (2018-present); School of Physics, Huazhong University of Science and Technology.
PostDoctor (2016-2018); School of Physics, Huazhong University of Science and Technology.
PostDoctor (2013-2016); School of Electronic Information and Communications, Huazhong University of Science and Technology.
1.Jie Luo, Yang Lei, Cheng-Gang Shao, Jian-Ping Liu, Dong Li, Rui-Qi Liu, Qing Li; Scheme of G measurement with large amplitude torsion pendulum, Physical Review D. 101, 042002 (2020);
2.Chao Xue; Jian-Ping Liu; Qing Li; Jun-Fei Wu; Shan-Qing Yang; Qi Liu; Cheng-Gang Shao; Liang-Cheng Tu; Zhong-Kun Hu; Jun Luo; Precision Measurement of the Newtonian Gravitational Constant, National Science Review. 7, 1803 (2020);
3.Jun-Fei Wu, Qing Li, Jian-Ping Liu, Chao Xue, Shan-Qing Yang; Cheng-Gang Shao; Liang-Cheng Tu; Zhong-Kun Hu; Jun Luo; Progress in Precise Measurements of the Gravitational Constant, Annalen der Physik. 531, 1900013 (2019);
4.Qing Li, Chao Xue, Jian-Ping Liu, Jun-Fei Wu, Shan-Qing Yang, Cheng-Gang Shao, Li-Di Quan, Wen-Hai Tan, Liang-Cheng Tu, Qi Liu, Hao Xu, Lin-Xia Liu, Qing-Lan Wang, Zhong-Kun Hu, Ze-Bing Zhou, Peng-Shun Luo, Shu-Chao Wu, Vadim Milyukov, Jun Luo. Measurement of the gravitational constant using two independent methods. Nature. 560, 582 (2018);
5.Qing Li, Jian-Ping Liu, Chao Xue, Jun-Fei Wu, Shan-Qing Yang, Jun Luo. Research on supporting mounts of spheres in measurement of gravitational constant G. Rev. Sci. Instrum. 87, 034504 (2016);
6.Qing Li, Jian-Ping Liu, Hui-Hui Zhao, Shan-Qing Yang, Liang-Cheng Tu, Qi Liu, Cheng-Gang Shao, Zhong-Kun Hu, Vadim Milyukov, Jun Luo. G measurements with time-of-swing method at HUST. Phil. Trans. R. Soc. A. 372, 20140141 (2014);
7.Liang-Cheng Tu, Shan-Qing Yang, Qing Li, Cheng-Gang Shao, Zhong-Kun Hu, Jun Luo. Precision torsion balance experiments and its applications (in Chinese). Chin. Sci. Bull. (Chin Ver). 59, 2999 (2014);
8.Liang-Cheng Tu, Qing Li, Qing-Lan Wang, Cheng-Gang Shao, Shan-Qing Yang, Lin-Xia Liu, Qi Liu, Jun Luo. New determination of the gravitational constant G with time-of-swing method. Phys. Rev. D. 82, 022001 (2010);
9.Qing Li, Lin-Xia Liu, Liang-Cheng Tu, Cheng-Gang Shao, Jun Luo. Effect of Local Magnetic Field in G Measurement with Time-of-Swing Method. Chin. Phys. Lett. 27, 070401 (2010);
10.Shan-Qing Yang, Liang-Cheng Tu, Cheng-Gang Shao, Qing Li, Qing-Lan Wang, Ze-Bing Zhou, Jun Luo. Direct measurement of the anelasticity of a tungsten fiber. Phys. Rev. D. 80, 122005 (2009);
11.Jun Luo, Qi Liu, Liang-Cheng Tu, Cheng-Gang Shao, Lin-Xia Liu, Shan-Qing Yang, Qing Li, Ya-Ting Zhang. Determination of the Newtonian Gravitational Constant G with Time-of-Swing Method. Phys. Rev. Lett. 102, 240801 (2009).
In the past 10 years, I focused on the big G measurement with the time-of-swing method by using high-Q silica fibers in the cave laboratory in Huazhong University of Science and Technology. The main innovations include: 1). Coated silica fibers with Q factor of 5*104are used in the experiment to reduce the anelastic effect. The silica fibers are pulled from 3-mm-diameter rods using oxygen-natural gas flame by hand. The fiber surface is coated with germanium and bismuth films with thickness of about 10 nm to make it ground; 2). The local background gravitational gradient is measured and then compensated with about 1 tons of lead blocks; 3). The coating effect of the pendulum is reduced by using aluminum coating layer to replace the Au/Cu coating layer; 4). The magnetic damper is optimized and its effect contributed to the value of G is reduced; 5). The updated three-point mounts are used to support the spherical source masses to improve the position stability and repeatability; 6). The measurements of G are conducted simultaneously on two sets of apparatus to verify the system effects related to the device. After several years of effort, the measurement of G has been performed with four silica fibers on two apparatus. We obtain seven values of G, which are consistent with each other. The weighted mean value of G is 6.674184(78)´10−11m3kg−1s−2with a combined relative uncertainty of 11.64 ppm.
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