A Novel Technology for Measurements of Dielectric Properties of Extremely Small Volumes of Liquids

Autor:	Wei-Na Liu
Jazyk:	angličtina
Rok vydání:	2016
Předmět:	Electrical engineering. Electronics. Nuclear engineering TK1-9971 Cellular telephone services industry. Wireless telephone industry HE9713-9715
Zdroj:	International Journal of Antennas and Propagation, Vol 2016 (2016)
Druh dokumentu:	article
ISSN:	1687-5869 1687-5877
DOI:	10.1155/2016/1436798
Popis:	A high sensitivity sensor for measurement radio frequency (RF) dielectric permittivity of liquids is described. Interference is used and parasitic effects are cancellation, which makes the sensor can catch weak signals caused by liquids with extremely small volumes. In addition, we present the relationship between transmission coefficient and permittivity of liquids under test (LUT). Using this sensor, quantitative measurements of the dielectric properties at 5.8 GHz are demonstrated of LUTs. Experiments show that the proposed method only requires the volume of 160 nanoliters for liquids. Therefore, the technology can be used for RF spectroscopic analysis of biological samples and extremely precious liquids.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/79c3b17bf06e468a9bf426b3d75e4600 Zobrazit plný text záznamu Plný text View record in DOAJ