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A tunable inverse-hemisphere-shaped Bragg grating sensor

튜닝가능한 역반구형의 브래그 그레이팅 센서

  • Ryu, Yunha (School of Mechanical Engineering, Yonsei Univ.) ;
  • Kim, Kyoungsik (School of Mechanical Engineering, Yonsei Univ.)
  • Received : 2013.09.17
  • Accepted : 2013.09.24
  • Published : 2013.09.25
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Abstract

In this work, we investigated the diffraction of inverse-hemisphere shaped polymer grating. The grating was fabricated by using soft lithography of hexagonally close-packed PS nanospheres. The periodicity of the grating was tuned by swelling in acetone and the diffraction wavelength shift induced from lattice change was measured. This device can be used as a strain gauge or a chemical sensor.

본 연구에서는 소프트 리소그래피를 이용하여 주기 튜닝이 가능한 PDMS 그레이팅을 제작하고, 그레이팅을 톨루엔에 담궈 주기를 늘리며 회절파장의 변화를 관찰하였다. 주기가 커짐에 따라 회절파장이 긴 파장 쪽으로 변화하였다. 본 장치는 여러 가지 용매에 대한 화학 센서로 응용이 가능할 것이다.

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References

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