A general methodology to measure the light-to-heat conversion efficiency of solid materials

Abstract Light-to-heat conversion has been intensively investigated due to the potential applications including photothermal therapy and solar energy harvesting. As a fundamental property of materials, accurate measurement of light-to-heat conversion efficiency (LHCE) is of vital importance in devel...

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Main Authors: Kai Gu, Haizheng Zhong
Format: Article
Language:English
Published: Nature Publishing Group 2023-05-01
Series:Light: Science & Applications
Online Access:https://doi.org/10.1038/s41377-023-01167-6
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author Kai Gu
Haizheng Zhong
author_facet Kai Gu
Haizheng Zhong
author_sort Kai Gu
collection DOAJ
description Abstract Light-to-heat conversion has been intensively investigated due to the potential applications including photothermal therapy and solar energy harvesting. As a fundamental property of materials, accurate measurement of light-to-heat conversion efficiency (LHCE) is of vital importance in developing advanced materials for photothermal applications. Herein, we report a photothermal and electrothermal equivalence (PEE) method to measure the LHCE of solid materials by simulating the laser heating process with electric heating process. The temperature evolution of samples during electric heating process was firstly measured, enabling us to derive the heat dissipation coefficient by performing a linear fitting at thermal equilibrium. The LHCE of samples can be calculated under laser heating with the consideration of heat dissipation coefficient. We further discussed the effectiveness of assumptions by combining the theoretical analysis and experimental measurements, supporting the obtained small error within 5% and excellent reproducibility. This method is versatile to measure the LHCE of inorganic nanocrystals, carbon-based materials and organic materials, indicating the applicability of a variety of materials.
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spelling doaj.art-465e2bf45fce42ba8b50fac94ed7ed012023-05-21T11:27:54ZengNature Publishing GroupLight: Science & Applications2047-75382023-05-0112111010.1038/s41377-023-01167-6A general methodology to measure the light-to-heat conversion efficiency of solid materialsKai Gu0Haizheng Zhong1Beijing Key Laboratory of Nanophotonics & Ultrafine Optoelectronic Systems, School of Materials Sciences & Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Nanophotonics & Ultrafine Optoelectronic Systems, School of Materials Sciences & Engineering, Beijing Institute of TechnologyAbstract Light-to-heat conversion has been intensively investigated due to the potential applications including photothermal therapy and solar energy harvesting. As a fundamental property of materials, accurate measurement of light-to-heat conversion efficiency (LHCE) is of vital importance in developing advanced materials for photothermal applications. Herein, we report a photothermal and electrothermal equivalence (PEE) method to measure the LHCE of solid materials by simulating the laser heating process with electric heating process. The temperature evolution of samples during electric heating process was firstly measured, enabling us to derive the heat dissipation coefficient by performing a linear fitting at thermal equilibrium. The LHCE of samples can be calculated under laser heating with the consideration of heat dissipation coefficient. We further discussed the effectiveness of assumptions by combining the theoretical analysis and experimental measurements, supporting the obtained small error within 5% and excellent reproducibility. This method is versatile to measure the LHCE of inorganic nanocrystals, carbon-based materials and organic materials, indicating the applicability of a variety of materials.https://doi.org/10.1038/s41377-023-01167-6
spellingShingle Kai Gu
Haizheng Zhong
A general methodology to measure the light-to-heat conversion efficiency of solid materials
Light: Science & Applications
title A general methodology to measure the light-to-heat conversion efficiency of solid materials
title_full A general methodology to measure the light-to-heat conversion efficiency of solid materials
title_fullStr A general methodology to measure the light-to-heat conversion efficiency of solid materials
title_full_unstemmed A general methodology to measure the light-to-heat conversion efficiency of solid materials
title_short A general methodology to measure the light-to-heat conversion efficiency of solid materials
title_sort general methodology to measure the light to heat conversion efficiency of solid materials
url https://doi.org/10.1038/s41377-023-01167-6
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