Block copolymer structural color strain sensor

Tae Hyun Park, Seunggun Yu, Sung Hwan Cho, Han Sol Kang, Yeongsik Kim, Min Ju Kim, Hongkyu Eoh, Chanho Park, Beomjin Jeong, Seung Won Lee, Du Yeol Ryu, June Huh, Cheolmin Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The development of electrically responsive sensors based on the capacitance, voltage, and resistance that can detect and simultaneou sly visualize the large strain involved with human motion is in great demand. Here, we demonstrate a highly stretchable, large strain capacitive sensor that can visualize strain based on the strain-responsive structural color (SC). Our device contains an elastomeric sensing film that produces a capacitance change under strain, in which a self-assembled block copolymer (BCP) photonic crystal (PC) film with 1D periodic in-plane lamellae aligned parallel to the film surface is embedded for the efficient visualization of strain. The capacitance change arises from changes in the dimensions of the elastomer film under strain. The mechanochromic BCP PC film responds to strain, giving rise to an SC change with strain. The initial red SC of the sensor blueshifts and turns blue when the sensor is stretched to 100%, resulting in a full-color SC alteration as a function of the strain. Our BCP SC strain sensor exhibits a fast strain response with multi-cycle reliability of both the capacitance and SC changes over 1000 cycles. This property allows for efficient visible recognition not only of the strained positions during finger bending and poking with a sharp object but also of the shapes of the strained objects.

Original languageEnglish
Pages (from-to)328-339
Number of pages12
JournalNPG Asia Materials
Volume10
Issue number4
DOIs
Publication statusPublished - 2018 Apr 1

Fingerprint

Block Copolymers
Strain Sensor
block copolymers
Block copolymers
Color
color
sensors
Sensors
Capacitance
capacitance
Large Strain
Photonic Crystal
structural strain
Sensor
photonics
cycles
Photonic crystals
elastomers
lamella
Cycle

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Park, T. H., Yu, S., Cho, S. H., Kang, H. S., Kim, Y., Kim, M. J., ... Park, C. (2018). Block copolymer structural color strain sensor. NPG Asia Materials, 10(4), 328-339. https://doi.org/10.1038/s41427-018-0036-3
Park, Tae Hyun ; Yu, Seunggun ; Cho, Sung Hwan ; Kang, Han Sol ; Kim, Yeongsik ; Kim, Min Ju ; Eoh, Hongkyu ; Park, Chanho ; Jeong, Beomjin ; Lee, Seung Won ; Ryu, Du Yeol ; Huh, June ; Park, Cheolmin. / Block copolymer structural color strain sensor. In: NPG Asia Materials. 2018 ; Vol. 10, No. 4. pp. 328-339.
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Park, TH, Yu, S, Cho, SH, Kang, HS, Kim, Y, Kim, MJ, Eoh, H, Park, C, Jeong, B, Lee, SW, Ryu, DY, Huh, J & Park, C 2018, 'Block copolymer structural color strain sensor', NPG Asia Materials, vol. 10, no. 4, pp. 328-339. https://doi.org/10.1038/s41427-018-0036-3

Block copolymer structural color strain sensor. / Park, Tae Hyun; Yu, Seunggun; Cho, Sung Hwan; Kang, Han Sol; Kim, Yeongsik; Kim, Min Ju; Eoh, Hongkyu; Park, Chanho; Jeong, Beomjin; Lee, Seung Won; Ryu, Du Yeol; Huh, June; Park, Cheolmin.

In: NPG Asia Materials, Vol. 10, No. 4, 01.04.2018, p. 328-339.

Research output: Contribution to journalArticle

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AU - Park, Cheolmin

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Park TH, Yu S, Cho SH, Kang HS, Kim Y, Kim MJ et al. Block copolymer structural color strain sensor. NPG Asia Materials. 2018 Apr 1;10(4):328-339. https://doi.org/10.1038/s41427-018-0036-3