TY - GEN
T1 - Mechanically Magnified Sensitivity Enhancement with Micro-Step Substrate for Eye-Recognizable Structural-Color Hydrogel Biochemical Sensors
AU - Yamawaki, Shota
AU - Onoe, Hiroaki
N1 - Funding Information:
This work was supported by Grant-in Aid for Challenging Research (Pioneering) (21K18164) from, Japan Society for the Promotion of Science, JSPS, Japan
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - We present a versatile device structure that can mechanically magnify the sensitivity of stimuli-responsive structural-color hydrogel biochemical sensors. In our system, the structural-color hydrogel part and the stimuli-response hydrogel part are separately arrayed on a substrate with micro-step structures, causing the height difference between the two hydrogel parts. This height difference magnifies the shrinkage ratio to be larger in the color part than in the stimulus-responsive part, achieving the x5 - x10 high sensitivity of the hydrogel-based biochemical sensor. We applied ethanol-responsive and temperature-responsive hydrogels to our proposed device and confirmed the magnification of the sensitivity compared to previous sensors. We believe that our sensor device will be an effective approach to providing sensing with practical sensitivity for medical and other applications.
AB - We present a versatile device structure that can mechanically magnify the sensitivity of stimuli-responsive structural-color hydrogel biochemical sensors. In our system, the structural-color hydrogel part and the stimuli-response hydrogel part are separately arrayed on a substrate with micro-step structures, causing the height difference between the two hydrogel parts. This height difference magnifies the shrinkage ratio to be larger in the color part than in the stimulus-responsive part, achieving the x5 - x10 high sensitivity of the hydrogel-based biochemical sensor. We applied ethanol-responsive and temperature-responsive hydrogels to our proposed device and confirmed the magnification of the sensitivity compared to previous sensors. We believe that our sensor device will be an effective approach to providing sensing with practical sensitivity for medical and other applications.
KW - Biochemical sensors
KW - Hydrogel
KW - Stimuli responsive material
KW - Structural color
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U2 - 10.1109/MEMS51670.2022.9699617
DO - 10.1109/MEMS51670.2022.9699617
M3 - Conference contribution
AN - SCOPUS:85126395282
T3 - Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
SP - 739
EP - 742
BT - 35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022
Y2 - 9 January 2022 through 13 January 2022
ER -