A Novel Technology for Measurements of Dielectric Properties of Extremely Small Volumes of Liquids-Reference-Cited by-同舟云学术

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

Published:2016 Issue: Volume:2016 Page:1-5
ISSN:1687-5869
Container-title:International Journal of Antennas and Propagation
language:en
Short-container-title:International Journal of Antennas and Propagation

Author:

Liu Wei-Na¹²

Affiliation:

1. College of Physics and Electronic Engineering, Henan Normal University, Xinxiang 453007, China

2. Henan Key Discipline Open Laboratory of Electromagnetic Wave Detecting, Xinxiang 453007, China

Abstract

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.

Funder

Henan Normal University

Publisher

Hindawi Limited

Subject

Electrical and Electronic Engineering

Link

http://downloads.hindawi.com/journals/ijap/2016/1436798.pdf

Reference19 articles.

1. Quantitative detection of carbon nanotubes in biological samples by an original method based on microwave permittivity measurements

2. Microwave dielectric spectra and molecular relaxation in formamide–N,N-dimethylformamide binary mixtures

3. A Miniaturized Broadband Multi-State Reflectometer Integrated on a Silicon MEMS Probe for Complex Permittivity Measurement of Biological Material