Geometric Shape Induced Small Change of Seebeck Coefficient in Bulky   Metallic Wires

doi:10.3390/s17020331

CORC > 北京大学 > 信息科学技术学院

	Geometric Shape Induced Small Change of Seebeck Coefficient in Bulky Metallic Wires
	Li, Gang ; Su, Xiaohui ; Yang, Fan ; Huo, Xiaoye ; Zhang, Gengmin ; Xu, Shengyong
刊名	SENSORS
	2017
关键词	thermopower bulky metallic wire mean free path size effect high-temperature sensor MEAN FREE-PATH THERMOELECTRIC-POWER MEASUREMENTS THIN-FILM THERMOCOUPLES LIGHT-EMITTING DEVICES TEMPERATURE-MEASUREMENT ELECTRICAL-RESISTIVITY ARTIFICIAL RETINA COPPER-FILMS SENSOR MODEL
DOI	10.3390/s17020331
英文摘要	In this paper, we report the results of slight changes in the thermopower of long W, Mo, Zn, Cu, brass, and Ti wires, that resulted from changes in the wire's diameter or cross-sectional area. The samples used in the tests had a round shape with a diameter that ranged from tens of micron to 2 mm, which was much larger than the corresponding mean free paths of these materials. Nevertheless, a small change in thermopower, at the order of 1-10 nV/K, was repeatedly observed when the wire diameter was changed, or when the cross-sectional area of the wire was altered by mechanical methods, such as grinding or splitting. The results are consistent with previous observations showing that the thermopower in metallic thin film stripes changes with their width, from 100 mu m to as little as 70 nm, implying a universal, geometric-boundary-related size effect of thermopower in metal materials, that occurs at the nanometer scale and continuously decreases all the way to the millimeter scale. This effect could be applied in the manufacturing of high-temperature sensors with simple structures.; NSF of China [11374016, 91221202]; SCI(E); ARTICLE; 2; 17
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/475281]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Li, Gang,Su, Xiaohui,Yang, Fan,et al. Geometric Shape Induced Small Change of Seebeck Coefficient in Bulky Metallic Wires[J]. SENSORS,2017.
APA	Li, Gang,Su, Xiaohui,Yang, Fan,Huo, Xiaoye,Zhang, Gengmin,&Xu, Shengyong.(2017).Geometric Shape Induced Small Change of Seebeck Coefficient in Bulky Metallic Wires.SENSORS.
MLA	Li, Gang,et al."Geometric Shape Induced Small Change of Seebeck Coefficient in Bulky Metallic Wires".SENSORS (2017).