A Composite Nano-ink of Liquid Metal Nanoparticles and Carbon Nanotubes for the Fabrication of Flexible Pressure Sensors.

Autor: Yang, Tao, Feng, Junyan, Ao, Hezheng, Cao, Peng, Shang, Tao, Xing, Bo
Zdroj: Journal of Electronic Materials; Feb2024, Vol. 53 Issue 2, p652-660, 9p
Abstrakt: Liquid metal (LM) eutectic gallium–indium (EGaIn) possesses the ductility of a polymer and the conductivity of metal materials, making it a promising material for flexible electronics. Fabricating LM-based circuits is challenging because of the large surface tension of EGaIn. However, the circuit can be fabricated on various substrates using an additive printing process based on the principle of ultrasonic resonance. To improve the wettability between the LM and a substrate material, LM nanoparticles/carbon nanotubes (LMP/CNT) composite nano-ink was prepared, which has excellent colloidal stability and biocompatibility. A conductive circuit was realized by attaching CNTs to LMPs for imparting intrinsic electrical conductivity. Subsequently, flexible polydimethylsiloxane (PDMS) was used as the substrate, and a flexible pressure sensor with a response time of 103 ms was produced. This study introduces fabrication strategies for a flexible pressure sensor based on LMP/CNT composite nano-ink and additive printing processes, providing enormous possibilities for the application of LM in the field of printed electronics. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index