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2021 Vol.9, Issue 1

Research Article

Printability of Paper-Based Ag/CNT Nanocomposite Strain Sensor Manufactured by Screen Printing Technology

스크린 프린팅 기술로 제작된 종이기반 Ag/CNT nanocomposite 스트레인 센서의 인쇄적성

Xue Qi1, Sooman Lim2

제설1, 임수만2

1Ph.D. Student, Department of Flexible and Printable Electronics, LANL-CBNU Engineering Institute-Korea, Jeonbuk National University
2Associate Professor, Department of Flexible and Printable Electronics, LANL-CBNU Engineering Institute-Korea, Jeonbuk National University
1전북대학교 유연인쇄전자 전문대학원, LANL-JBNU 공학연구소 박사과정생
2전북대학교 유연인쇄전자 전문대학원, LANL-JBNU 공학연구소 부교수
31 March 2021. pp. 1-8
PDF Citation
Abstract
인쇄전자 기반으로 제작된 종이 기반 스트레인 센서는 다양한 응용 분야가 있으며, 특히 저항 기반 센서는 환경 친화적이며 웨어러블 장치에 사용할 수 있어 천천히 변화하는 변형, 무거운 하중을 받는 구조 또는 극한 이벤트로 인한 예기치 않은 영향을 감지하는데 적합하다. 본 연구에서는 Ag/CNT 스크린 프린팅 공정을 사용하여 GF 20 이상의 종이 기반 스트레인 센서를 제작하였고 인쇄적성에 따른 센서 제작 및 센싱 효과를 체계적으로 분석하였다. 그 결과, gap이 0.38에서 0.5 mm로 증가할 경우 선폭이 546 um에서 최대 396 um로 감소함 확인하였고 스퀴지가 스크린 메쉬에 5 mm에서 9 mm로 가까워질수록 패턴 폭은 581에서 721 um로 증가됨을 볼 수 있었다. 또한, 100°C에서 저항값이 352 Ω에서 220°C일 때 100 Ω까지 감소하였는데 이러한 온도 변화는 Ag/CNT의 결합구조에 영향을 미치고 이는 감도 차이를 생성함을 확인할 수 있었다. 이를 통해 스크린 프린팅 공정으로 종이기반 스트레인 센서 기술 개발을 위한 의미 있는 기본 데이터로 사용될 수 있다고 사료된다.
Paper-based strain sensors produced based on printed electronics have a variety of applications for slowly changing deformation, heavy-loaded structures, or extreme events. Especially resistance-based sensors which can be used in wearable devices, are affected by printability. In this study, a strain sensor based on GF 20 or higher was fabricated using the Ag/CNT screen printing process, and the sensor fabrication and sensing effects were systematically analyzed according to its printability. As a result, when the gap between mesh and sbustrate is increased from 0.38 to 0.5 mm, line width decreases from 546 um to a maximum of 396 um. As the confirmed squeegee approaches the screen mesh from 5 mm to 9 mm, the pattern width increases from 581 to 721 um. In addition, it can be seen that the resistance value decreases from 352 Ω to 100 Ω when drying temperature increased from 100°C to 220°C, which is attributed to the bonding structure of Ag/CNTs and creates a sensitivity difference. Through this, it is considered a number of meaningful basic data for the development of paper-based strain sensor technology as a screen printing process.
Keywords
Printability
Screen printing
Strain sensor
Paper
Ag/CNT nanocomposite
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Information
  • Publisher :The Society of Convergence Knowledge
  • Publisher(Ko) :융복합지식학회
  • Journal Title :The Society of Convergence Knowledge Transactions
  • Journal Title(Ko) :융복합지식학회논문지
  • Volume : 9
  • No :1
  • Pages :1-8
  • DOI :https://doi.org/10.22716/sckt.2021.9.1.001
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