Loop Antenna Driven Double Microwave Resonator-Based Sensors Incorporating PDMS Microchannels on Glass Substrates

Proceedings

Yalcinkaya, Arda D.¹  Dundar, Gunhan²  Camli, Berk³  Torun, Hamdi⁴  Kizil, Huseyin⁵  Altinagac, Emre⁶ 

[1] Author to whom correspondence should be addressed.;Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Turkey;Electrical and Electronics Engineering, Bogazici University, Istanbul 34342, Turkey;Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle NE1 8ST, UK;Metallurgical and Materials Engineering, Istanbul Technical University, Istanbul 34469, Turkey;Nanoscience and Nanoengineering, Istanbul Technical University, Istanbul 34469, Turkey

关键词: split ring resonators;    microchannel;    PDMS;    glucose sensing;   

DOI  :  10.3390/proceedings2131064

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Microwave resonator-based sensors offer low-cost, contactless, label-free sensing solutions in a variety of applications. Sensing is done by the observation of the shifts in resonant frequency of the sensor structure, which depends on resonator geometry, material and physical properties of the environment. It is observed that the readings can be significantly affected by changes in secondary physical parameters or sample localization on resonator. A double microwave resonator sensing system incorporating microchannels on glass substrates are proposed to address these challenges. PDMS microchannels bonded on glass substrates are mounted on split ring resonators fabricated via low-cost processes. Experiments are performed with glucose solutions of 1.4 mg/mL–3.0 mg/mL concentration range. Results confirm that the use of double resonators increase rejection of background noise, whereas microchannel use increases measurement stability. Overall measurement sensitivity is shown to be 0.92 MHz/(mg/mL). Further improvements are aimed with the bonding of microchannels directly on resonators fabricated on glass substrates.

【 授权许可】

CC BY