Abstract
Electronic devices with stretchability can apply to various devices because stretchability enables bending and stretching while in use. However, the conventional electrodes made of hard materials are not suitable for bending and stretching. Therefore, electronic devices consisting of stretchable electrodes enclosed in elastomer have been developed. We fabricated stretchable electrodes using Ga-In-Sn alloy (low melting point eutectic alloy consisting of 68.5 % Gallium, 21.5 % Indium, and 10 % Tin) enclosed in PDMS sheets. Purposes of the research are researching electrrical characteristics of Ga-In-Sn alloy stretchable electrodes under stretching and comparing with the conventional electrodes made of hard materials to demonstrate efficiency of Ga-In-Sn alloy stretchable electrodes. In this paper, we conducted the tensile tests and the cyclic tests (up to 30 % strain) with Ga-In-Sn alloy stretchable electrodes. In the tensile tests, found that Ga-In-Sn alloy stretchable electrodes broke at 40 〜 50 % strain due to leaking Ga-In-Sn alloy. In the cyclic tests, large hysteresis was not found and electrical resistance change responded to strain without delay.
