Test of non-Newtonian gravitational forces at micrometer range with two-dimensional force mapping

被引：20

作者：

Wang, Jianbo ^{[1
]}

Guan, Shengguo ^{[1
,2
]}

Chen, Kai ^{[1
]}

Wu, Wenjie ^{[1
]}

Tian, Zhaoyang ^{[1
]}

Luo, Pengshun ^{[1
]}

Jin, Aizi ^{[3
]}

Yang, Shanqing ^{[1
]}

Shao, Chenggang ^{[1
]}

Luo, Jun ^{[1
,4
]}

机构：

[1] Huazhong Univ Sci & Technol, MOE Key Lab Fundamental Quant Measurement, Sch Phys, Wuhan 430074, Peoples R China

[2] Jiangxi Normal Univ, Coll Phys & Commun Elect, Nanchang 330022, Peoples R China

[3] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China

[4] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China

来源：

PHYSICAL REVIEW D | 2016年 / 94卷 / 12期

基金：

中国国家自然科学基金;

关键词：

THERMAL CASIMIR FORCE; INVERSE-SQUARE LAW; DIMENSIONS; MILLIMETER; CANTILEVERS; PHYSICS;

D O I：

10.1103/PhysRevD.94.122005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report an isoelectronic test of non-Newtonian forces at micrometer range by sensing the lateral force between a gold sphere and a density modulation source mass using a soft cantilever. Two-dimensional (2D) force mapping, in combination with in situ topographic imaging, is applied to verify the isoelectronic property of the surface. The force signal is found to be electrostatic force dominated, which is correlated with the density modulation structure for thinner gold coating and reduced by thicker gold coating and thermal annealing. Maximum likelihood estimation is used to extract the constraint on the hypothetical force based on the 2D data, and the experiment sets a constraint on the Yukawa type forces without subtraction of the model dependent force background. This result would be a meaningful complementary to previous tests with different methods.

引用

页数：8

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