Self-adaptive thermoregulation, the mechanism living organisms use to balance their temperature, holds great promise for decarbonizing cooling and heating processes. This functionality can be effectively emulated by engineering the thermal emissivity of materials to adapt to background temperature variations. Yet, solutions that marry large emissivity switching ( ) with scalability, cost-effectiveness, and design freedom are still lacking. Here, we fill this gap by introducing infrared dipole antennas made of tunable thermochromic materials. We demonstrate that non-spherical antennas (rods, stars and flakes) made of vanadium-dioxide can exhibit a massive (~200-fold) increase in their absorption cross-section as temperature rises. Embedding these antennas in polymer films, or simply spraying them directly, creates free-form thermoregulation composites, featuring an outstanding in spectral ranges that can be tuned at will. Our research paves the way for versatile self-adaptive heat management solutions (coatings, fibers, membranes, and films) that could find application in radiative-cooling, heat-sensing, thermal-camouflage, and other.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11496700 | PMC |
| http://dx.doi.org/10.1038/s41467-024-53177-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Infrared thermochromic antenna composite for self-adaptive thermoregulation.
Nat Commun
October 2024
Department of Electronic & Electrical Engineering, Photonic Innovations Lab, University College London, London, UK.
Self-adaptive thermoregulation, the mechanism living organisms use to balance their temperature, holds great promise for decarbonizing cooling and heating processes. This functionality can be effectively emulated by engineering the thermal emissivity of materials to adapt to background temperature variations. Yet, solutions that marry large emissivity switching ( ) with scalability, cost-effectiveness, and design freedom are still lacking.
View Article and Find Full Text PDFA Skin-Inspired Self-Adaptive System for Temperature Control During Dynamic Wound Healing.
Nanomicro Lett
March 2024
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, People's Republic of China.
Article Synopsis
- The skin plays a vital role in regulating body temperature, and damage to it can impair situational awareness for patients.
- A new interactive electronic system mimics human thermoregulation using sensitive thermistors and a low-power control unit, allowing it to self-adjust temperatures between 35-42 °C.
- This innovative system not only aids in temperature control but also promotes skin barrier formation and accelerates wound healing by about 10%, showing potential for future medical and robotic applications.
Bioinspired Thermochromic Textile Based on Robust Cellulose Aerogel Fiber for Self-Adaptive Thermal Management and Dynamic Labels.
ACS Appl Mater Interfaces
October 2023
College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
Aerogel fiber has emerged recently for incorporation in personal thermal management textiles due to its flexibility, scalability, and ultrahigh porosity, which allows the body to keep warm via thermal isolation without energy consumption. However, the functionalization and intellectualization of cellulose-based aerogel fibers have not yet been fully developed. Herein, we propose a biomimicking design inspired by polar bear and Siamese cat hair that combines porous cellulose aerogel fiber (CAF) with reversible thermochromic microcapsules to mimic biological sensory and adaptive thermoregulation functions.
View Article and Find Full Text PDFSmart textiles for personalized thermoregulation.
Chem Soc Rev
September 2021
Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.
Thermoregulation has substantial implications for human health. Traditional central space heating and cooling systems are less efficient due to wasted energy spent on the entire building and ignore individual thermophysiological comfort. Emerging textiles based on innovations in materials chemistry and physics, nanoscience, and nanotechnology have now facilitated thermoregulation in a far more personalized and energy-saving manner.
View Article and Find Full Text PDFA global bioheat model with self-tuning optimal regulation of body temperature using Hebbian feedback covariance learning.
Med Phys
December 2005
Bioinformatics Institute, 30 Biopolis Road, #07-01 Matrix, Singapore 138671.
In the lower brain, body temperature is continually being regulated almost flawlessly despite huge fluctuations in ambient and physiological conditions that constantly threaten the well-being of the body. The underlying control problem defining thermal homeostasis is one of great enormity: Many systems and sub-systems are involved in temperature regulation and physiological processes are intrinsically complex and intertwined. Thus the defining control system has to take into account the complications of nonlinearities, system uncertainties, delayed feedback loops as well as internal and external disturbances.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!