Meta-atom microfluidic sensor for measurement of dielectric properties of liquids

被引：53

作者：

Awang, Robiatun A. ^{[1
,2
,3
]}

Tovar-Lopez, Francisco J. ^{[1
,4
]}

Baum, Thomas ^{[1
]}

Sriram, Sharath ^{[1
,2
,4
]}

Rowe, Wayne S. T. ^{[1
]}

机构：

[1] RMIT Univ, Sch Engn, Melbourne, Vic, Australia

[2] RMIT Univ, Funct Mat & Microsystems Res Grp, Melbourne, Vic, Australia

[3] Univ Teknologi MARA, Fac Elect Engn, Shah Alam, Selangor, Malaysia

[4] RMIT Univ, Micro Nano Res Facil, Melbourne, Vic, Australia

来源：

JOURNAL OF APPLIED PHYSICS | 2017年 / 121卷 / 09期

关键词：

SPLIT-RING-RESONATOR; METAMATERIALS;

D O I：

10.1063/1.4978012

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High sensitivity microwave frequency microfluidic sensing is gaining popularity in chemical and biosensing applications for evaluating the dielectric properties of liquid samples. Here, we show that a tiny microfluidic channel positioned in the gaps of a dual-gap meta-atom split-ring resonator can exploit the electric field sensitivity to predict the dielectric properties of liquid samples. Employing an empirical relation between resonant characteristics of the fabricated sensor and the complex permittivity of water-ethanol or water-methanol mixtures produces good congruence to standardized values from the literature. This microfluidic sensor offers a potential lab-on-chip solution for liquid dielectric characterization without external electrical connections. Published by AIP Publishing.

引用

页数：8

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