A dual-mode textile for human body radiative heating and cooling

Po Chun Hsu, Chong Liu, Alex Y. Song, Ze Zhang, Yucan Peng, Jin Xie, Kai Liu, Chun Lan Wu, Peter B. Catrysse, Lili Cai, Shang Zhai, Arun Majumdar, Shanhui Fan, Yi Cui

Research output: Contribution to journalArticlepeer-review


Maintaining human body temperature is one of the most basic needs for living, which often consumes a huge amount of energy to keep the ambient temperature constant. To expand the ambient temperature range while maintaining human thermal comfort, the concept of personal thermal management has been recently demonstrated in heating and cooling textiles separately through human body infrared radiation control. Realizing these two opposite functions within the same textile would represent an exciting scientific challenge and a significant technological advancement. We demonstrate a dual-mode textile that can perform both passive radiative heating and cooling using the same piece of textile without any energy input. The dual-mode textile is composed of a bilayer emitter embedded inside an infrared-transparent nanoporous polyethylene (nanoPE) layer. We demonstrate that the asymmetrical characteristics of both emissivity and nanoPE thickness can result in two different heat transfer coefficients and achieve heating when the low-emissivity layer is facing outside and cooling by wearing the textile inside out when the high-emissivity layer is facing outside. This can expand the thermal comfort zone by 6.5°C. Numerical fitting of the data further predicts 14.7°C of comfort zone expansion for dual-mode textiles with large emissivity contrast.

Original languageEnglish (US)
Article numbere1700895
JournalScience Advances
Issue number11
StatePublished - 2017
Externally publishedYes

ASJC Scopus subject areas

  • General


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