Demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers

Abstract Large-pixel-array infrared emitters are attractive in the applications of infrared imaging and detection. However, the array scale has been restricted in traditional technologies. Here, we demonstrated a light-driven photothermal transduction approach for an ultralarge pixel array infrared...

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Autores principales:	Jinying Zhang, Defang Li, Zhuo Li, Xin Wang, Suhui Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Publishing Group 2021
Materias:	Technology T Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/99b6069d336b4418b0075ddc9a239612
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spelling	oai:doaj.org-article:99b6069d336b4418b0075ddc9a2396122021-12-05T12:06:58ZDemonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers10.1038/s41378-021-00315-52055-7434https://doaj.org/article/99b6069d336b4418b0075ddc9a2396122021-12-01T00:00:00Zhttps://doi.org/10.1038/s41378-021-00315-5https://doaj.org/toc/2055-7434Abstract Large-pixel-array infrared emitters are attractive in the applications of infrared imaging and detection. However, the array scale has been restricted in traditional technologies. Here, we demonstrated a light-driven photothermal transduction approach for an ultralarge pixel array infrared emitter. A metal-black coating with nanoporous structures and a silicon (Si) layer with microgap structures were proposed to manage the thermal input and output issues. The effects of the nanoscale structures in the black coating and microscale structures in the Si layer were investigated. Remarkable thermal modulation could be obtained by adjusting the nanoscale and microscale structures. The measured stationary and transient results of the fabricated photothermal transducers agreed well with the simulated results. From the input view, due to its wide spectrum and high absorption, the black coating with nanoscale structures contributed to a 5.6-fold increase in the temperature difference compared to that without the black coating. From the output view, the microgap structures in the Si layer eliminated the in-plane thermal crosstalk. The temperature difference was increased by 340% by modulating the out-of-plane microstructures. The proposed photothermal transducer had a rising time of 0.95 ms and a falling time of 0.53 ms, ensuring a fast time response. This method is compatible with low-cost and mass manufacturing and has promising potential to achieve ultralarge-array pixels beyond ten million.Jinying ZhangDefang LiZhuo LiXin WangSuhui YangNature Publishing GrouparticleTechnologyTEngineering (General). Civil engineering (General)TA1-2040ENMicrosystems & Nanoengineering, Vol 7, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Technology T Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Technology T Engineering (General). Civil engineering (General) TA1-2040 Jinying Zhang Defang Li Zhuo Li Xin Wang Suhui Yang Demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers
description	Abstract Large-pixel-array infrared emitters are attractive in the applications of infrared imaging and detection. However, the array scale has been restricted in traditional technologies. Here, we demonstrated a light-driven photothermal transduction approach for an ultralarge pixel array infrared emitter. A metal-black coating with nanoporous structures and a silicon (Si) layer with microgap structures were proposed to manage the thermal input and output issues. The effects of the nanoscale structures in the black coating and microscale structures in the Si layer were investigated. Remarkable thermal modulation could be obtained by adjusting the nanoscale and microscale structures. The measured stationary and transient results of the fabricated photothermal transducers agreed well with the simulated results. From the input view, due to its wide spectrum and high absorption, the black coating with nanoscale structures contributed to a 5.6-fold increase in the temperature difference compared to that without the black coating. From the output view, the microgap structures in the Si layer eliminated the in-plane thermal crosstalk. The temperature difference was increased by 340% by modulating the out-of-plane microstructures. The proposed photothermal transducer had a rising time of 0.95 ms and a falling time of 0.53 ms, ensuring a fast time response. This method is compatible with low-cost and mass manufacturing and has promising potential to achieve ultralarge-array pixels beyond ten million.
format	article
author	Jinying Zhang Defang Li Zhuo Li Xin Wang Suhui Yang
author_facet	Jinying Zhang Defang Li Zhuo Li Xin Wang Suhui Yang
author_sort	Jinying Zhang
title	Demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers
title_short	Demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers
title_full	Demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers
title_fullStr	Demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers
title_full_unstemmed	Demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers
title_sort	demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers
publisher	Nature Publishing Group
publishDate	2021
url	https://doaj.org/article/99b6069d336b4418b0075ddc9a239612
work_keys_str_mv	AT jinyingzhang demonstrationofthermalmodulationusingnanoscaleandmicroscalestructuresforultralargepixelarrayphotothermaltransducers AT defangli demonstrationofthermalmodulationusingnanoscaleandmicroscalestructuresforultralargepixelarrayphotothermaltransducers AT zhuoli demonstrationofthermalmodulationusingnanoscaleandmicroscalestructuresforultralargepixelarrayphotothermaltransducers AT xinwang demonstrationofthermalmodulationusingnanoscaleandmicroscalestructuresforultralargepixelarrayphotothermaltransducers AT suhuiyang demonstrationofthermalmodulationusingnanoscaleandmicroscalestructuresforultralargepixelarrayphotothermaltransducers
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Demonstration of thermal modulation using nanoscale and microscale structures for ultralarge pixel array photothermal transducers

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