Theoretical Design of Smart Bionic Skins with Self-Adaptive Temperature Regulation.

Materials (Basel)

Centre for Optical and Electromagnetic Research, State Key Lab of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.

Published: November 2024

AI Article Synopsis

  • Thermal management is a key issue in electric design, especially for compact electronic systems, and this study introduces a bionic skin model that mimics human skin to regulate temperature effectively.
  • The artificial skin features phase change material nanoparticles in a thin matrix on a metallic surface, enabling it to maintain a stable temperature around 340 K despite varying external heat conditions.
  • The design also includes a plasmonic surface made of silver nanocubes to enhance visible light properties while retaining infrared functionality, providing a cost-effective solution for advanced thermal management in robotics and similar technologies.

Article Abstract

Thermal management presents a significant challenge in electric design, particularly in densely packed electronic systems. This study proposes a theoretical model for radiative bionic skin that emulates human skin, enabling the self-adaptive modulation of the thermal exhaustion rate to maintain homeostasis for objects covered by the skin in fluctuating thermal environments. The proposed artificial skin consists of phase change material (VO) nanoparticles embedded in a low-loss matrix situated on a metallic substrate with a minimal thickness of several micrometers. The findings from our theoretical analyses indicate that substantial alterations in thermal radiation power around the phase transition temperature of 340 K enable a silicone substrate to sustain a relatively stable temperature, with variations confined to ±6 K, despite external heat fluxes ranging from 150 to 450 W/m. Furthermore, to improve the spectral resemblance to natural skin, a plasmonic surface composed of self-assembled silver nanocubes is incorporated, allowing for modifications to the visible light properties of the bionic skin while maintaining its infrared characteristics. This theoretical investigation offers a cost-effective and conformal approach to the design of ultra-compact, fully passive, and versatile thermal management solutions for robotic systems and related technologies.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11595450PMC
http://dx.doi.org/10.3390/ma17225580DOI Listing

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