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Updated: Jan 14, 2026
Generation of Scalable, Metallic High-Aspect Ratio Nanocomposites in a Biological Liquid Medium
Published on: July 8, 2015
Biocompatible Collagen/Liquid Metal/Carbon Nanotube Hydrogel for Electromagnetic Interference Shielding in
Xinghai Wang1,2, Hao Tang3, Yahui Wen1,2
1College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
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The rapid advancement of implantable bioelectronics and wireless medical devices has made electromagnetic interference (EMI) shielding a critical challenge, particularly for ensuring signal stability in cardiac pacemakers, neural implants, and biosensors. However, achieving stable EMI shielding without compromising biocompatibility remains a significant hurdle in these applications. In this study, we address this challenge by developing a superstretchable, biocompatible hydrogel through in situ polymerization of fish-scale-derived collagen (COL) with a liquid metal-carbon nanotube (LM-CNT) composite, achieving exceptional EMI shielding performance. Here, we present a fish-scale-derived collagen hydrogel integrated with an LM-CNT network, which simultaneously achieves exceptional EMI shielding effectiveness (56.33 dB in X-band), ultrahigh stretchability (2230%), and high conductivity (50.75 S/m). The unique three-dimensional LM-CNT architecture enables efficient electromagnetic dissipation, while the natural collagen matrix ensures full biocompatibility─critical for applications in cardiac pacemakers and neural interfaces. This combination of performance and biosafety positions the material as a versatile solution for next-generation bioelectronic shielding.
