Direction-dependent stretchability of AgNW electrodes on microprism-mediated elastomeric substrates
P. Justin Jesuraj,
Chuanqian Shi,
Dong Hyun Kim,
Hassan Hafeez,
Jong Chan Lee,
Won Ho Lee,
Dae Keun Choi,
Zhanan Zou,
Jianliang Xiao,
Jeongho Min,
Myungkwan Song,
Chang Su Kim,
Seung Yoon Ryu
Affiliations
P. Justin Jesuraj
Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City 30019, Republic of Korea
Chuanqian Shi
Department of Mechanical Engineering, University of Colorado, 427 UCB, Boulder, CO 80309-0427, USA
Dong Hyun Kim
Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City 30019, Republic of Korea
Hassan Hafeez
Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City 30019, Republic of Korea
Jong Chan Lee
Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City 30019, Republic of Korea
Won Ho Lee
Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City 30019, Republic of Korea
Dae Keun Choi
Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City 30019, Republic of Korea
Zhanan Zou
Department of Mechanical Engineering, University of Colorado, 427 UCB, Boulder, CO 80309-0427, USA
Jianliang Xiao
Department of Mechanical Engineering, University of Colorado, 427 UCB, Boulder, CO 80309-0427, USA
Jeongho Min
Advanced Functional Thin Films Department, Korea Institute of Materials Science (KIMS) Changwon 51508, Republic of Korea
Myungkwan Song
Advanced Functional Thin Films Department, Korea Institute of Materials Science (KIMS) Changwon 51508, Republic of Korea
Chang Su Kim
Advanced Functional Thin Films Department, Korea Institute of Materials Science (KIMS) Changwon 51508, Republic of Korea
Seung Yoon Ryu
Division of Display and Semiconductor Physics, Display Convergence, College of Science and Technology, Korea University Sejong Campus, 2511 Sejong-ro, Sejong City 30019, Republic of Korea
Silver nanowires (AgNWs) have become an efficient electrode candidate for stretchable electronics. We report the effects of directional stretching in microprism-mediated AgNW stretchable electrodes on polyurethane (PU) substrates. The wavy substrate is fabricated using a customized microprism on polyethylene terephthalate. AgNWs on stretchable PU substrates show stable normalized resistance up to 35% strain under parallel uniaxial stretching. This performance is much better than AgNWs on bare PU substrate or on wavy PU under perpendicular stretching, which can only sustain 10%-15% strain before significant increase in normalized resistance. Finite element simulations were conducted to reveal the strain distribution and variation in the AgNW electrodes on both bare and wavy PU substrates when stretched along parallel and perpendicular directions. Comparing to AgNW electrodes on bare PU and on wavy PU under perpendicular stretching, the wavy PU surface relief features can effectively alleviate the strain in the AgNW network when stretched along parallel direction, leading to better performance.
