Temperature-independent thermal radiation
Abstract
Conventional wisdom states that the hotter an object is, the brighter it glows. This is the case for thermal light at any wavelength and enables applications such as infrared imaging and noncontact thermometry. We demonstrate a coating that emits the same amount of thermal radiation irrespective of temperature, within a temperature range of about 30 °C. This is accomplished using samarium nickel oxide—a quantum material that changes strongly but gradually as a function of temperature. This is the first time that temperature-independent thermal radiation has been demonstrated, and has substantial implications for infrared camouflage, privacy shielding, and radiative heat transfer.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 17, 2019
- Source ID
- 10.1073/pnas.1911244116
Entities
People
- Alireza Shahsafi
- Chenghao Wan
- Jad Salman
- Jerzy T Sadowski
- Jiarui Li
- Mikhail A Kats
- Patrick Roney
- Raymond Wambold
- Riccardo Comin
- Shriram Ramanathan
- You Zhou
- Yuzhe Xiao
- Zhaoning Yu
- Zhen Zhang
Organizations
- Air Force Office of Scientific Research
- Brookhaven National Laboratory
- Harvard University
- Massachusetts Institute of Technology
- National Science Foundation
- Office of Naval Research
- Purdue University
- University of Wisconsin–Madison