journal article·2022-08-23

Stretchable and Directly Patternable Double-Layer Structure Electrodes with Complete Coverage

Junsung Bang, Junhyuk Ahn, Jinyuan Zhang, Tae Hee Ko, Byeonghak Park, Yong Min Lee, Byung Ku Jung, Sang Yeop Lee, Jehyung Ok, Bong Hoon Kim, Tae-il Kim, Jong-Il Choi, Chi Hwan Lee, Soong Ju Oh

ACS Nano· Volume 16· Issue 8
Publisher page

Abstract

Stretchable electrodes are widely used in next-generation wearable electronics. Recent studies incorporated designs that help rigid electrodes attain stretchability. However, these structures exhibited unsatisfactory charge/signal extraction efficiency because of their low areal fill factor. Additionally, they cannot be photolithographically patterned on polymer substrates because of their low adhesion, requiring additional complicated fabrication steps. We developed photolithographically patternable stretchable electrodes with complete coverage and enhanced charge-extraction efficiency. The electrodes, comprising double layers, included a chemically treated Ag nanowire mesh and Au thin film. The interfacial linker role of polyvinylpyrrolidone chemically strengthened the interfacial bonds, and the reinforced concrete structure of nanowire-embedded metal thin films enhanced the mechanical properties. Therefore, the electrodes provided superior efficiency and stability in capturing physical, electromagnetic, and electrophysiological signals while exceeding the existing stretchable electrode limits. A broad range of applications are foreseen, such as electrocardiogram sensing electrodes, strain sensors, temperature sensors, and antennas.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications · Tactile and Sensory Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea

Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States

Division of Cardiology, Department of Internal Medicine, Korea University College of Medicine and Korea University Medical Center, Seoul 02841, Republic of Korea

Ion Channel Research Unit, Cardiovascular Research Institute, Korea University, Seoul 02841, Republic of Korea

School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea

Department of Semiconductor Systems Engineering, Korea University, Seoul 02841, Republic of Korea

Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea

Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea

School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, United States

School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States

Brick Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States

Funding

National Research Foundation of Korea · Division of Chemical, Bioengineering, Environmental, and Transport Systems · Purdue University · Korea University

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