Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of wireless/battery-free Love wave biosensor

무선/무전원 러브파 바이오센서 개발

  • Nam, Min-Woo (Division of Electronics & Computer Engineering, College of Information Technology, Ajou University) ;
  • Oh, Hae-Kwan (Division of Electronics & Computer Engineering, College of Information Technology, Ajou University) ;
  • Lee, Kee-Keun (Division of Electronics & Computer Engineering, College of Information Technology, Ajou University) ;
  • Yang, Sang-Sik (Division of Electronics & Computer Engineering, College of Information Technology, Ajou University)
  • Published : 2009.07.14
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Abstract

This paper reports a novel wireless love-wave biosensor on $41^{\circ}$ YX $LiNbO_3$ piezoelectric substrate and $SiO_2$ guiding layer for Immunoglobulin G (IgG) detection by protein binding. Different from the traditional biosensors based on surface acoustic wave (SAW) oscillator structured by delay line/resonators, a 440MHz reflective delay line consists of SPUDTs and three reflectors placed on $41^{\circ}$ YX $LiNbO_3$ in a row was fabricated as the sensor element. Good linearity, reproducibility, and high sensitivity were observed in the IgG concentration range 1~65nM. Unique advantages as high sensitivity, passive and simple measurement system are present over currently available other biosensors.

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