Eye-recognizable and repeatable biochemical flexible sensors using low angle-dependent photonic colloidal crystal hydrogel microbeads

Mio Tsuchiya, Yuta Kurashina, Hiroaki Onoe

Research output: Contribution to journalArticle

Abstract

This paper presents eye-recognizable and repeatable biochemical flexible sensors using low angle-dependent stimuli-responsive photonic colloidal crystal hydrogel (PCCG) microbeads. Thanks to the stimuli-responsive PCCG microbeads exhibiting structural color, users can obtain sensing information without depending on the viewing angle and the mechanical deformation of the flexible sensor. Temperature-responsive PCCG microbeads and ethanol-responsive PCCG microbeads were fabricated from a pre-gel solution of N-isopropylacrylamide (NIPAM) and N-methylolacrylamide (NMAM) by using a centrifuge-based droplet shooting device (CDSD). As a proof-of-concept of thin and flexible biochemical sensors, temperature- and ethanol-sensing devices were demonstrated. By comparing the structural color of the stimuli-responsive PCCG microbeads and the color chart of the device, sensing information, including skin temperature of the human body and ethanol concentration in alcoholic beverages, was obtained successively. We expect that our device design using low angle-dependent stimuli-responsive PCCG microbeads would contribute to the development of user-friendly biochemical sensor devices for monitoring environmental and healthcare targets.

Original languageEnglish
Article number17059
JournalScientific reports
Volume9
Issue number1
DOIs
Publication statusPublished - 2019 Dec 1

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Optics and Photonics
Hydrogel
Microspheres
Equipment and Supplies
N-methylolacrylamide
Ethanol
Color
Equipment Design
Alcoholic Beverages
Temperature
Skin Temperature
Environmental Monitoring
Human Body
Gels
Delivery of Health Care

ASJC Scopus subject areas

  • General

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Eye-recognizable and repeatable biochemical flexible sensors using low angle-dependent photonic colloidal crystal hydrogel microbeads. / Tsuchiya, Mio; Kurashina, Yuta; Onoe, Hiroaki.

In: Scientific reports, Vol. 9, No. 1, 17059, 01.12.2019.

Research output: Contribution to journalArticle

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