Light-induced levitation of ultralight carbon aerogels via temperature control

Abstract We demonstrate that ultralight carbon aerogels with skeletal densities lesser than the air density can levitate in air, based on Archimedes' principle, when heated with light. Porous materials, such as aerogels, facilitate the fabrication of materials with density less than that of air...

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Autores principales:	Reo Yanagi, Ren Takemoto, Kenta Ono, Tomonaga Ueno
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4f8c5f8ee8b14d5da86e0e1c8b6971e9
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id	oai:doaj.org-article:4f8c5f8ee8b14d5da86e0e1c8b6971e9
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spelling	oai:doaj.org-article:4f8c5f8ee8b14d5da86e0e1c8b6971e92021-12-02T16:04:18ZLight-induced levitation of ultralight carbon aerogels via temperature control10.1038/s41598-021-91918-52045-2322https://doaj.org/article/4f8c5f8ee8b14d5da86e0e1c8b6971e92021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91918-5https://doaj.org/toc/2045-2322Abstract We demonstrate that ultralight carbon aerogels with skeletal densities lesser than the air density can levitate in air, based on Archimedes' principle, when heated with light. Porous materials, such as aerogels, facilitate the fabrication of materials with density less than that of air. However, their apparent density increases because of the air inside the materials, and therefore, they cannot levitate in air under normal conditions. Ultralight carbon aerogels, fabricated using carbon nanotubes, have excellent light absorption properties and can be quickly heated by a lamp owing to their small heat capacity. In this study, an ultralight carbon aerogel was heated with a halogen lamp and levitated in air by expanding the air inside as well as selectively reducing its density. We also show that the levitation of the ultralight carbon aerogel can be easily controlled by turning the lamp on and off. These findings are expected to be useful for various applications of aerogels, such as in communication and transportation through the sky.Reo YanagiRen TakemotoKenta OnoTomonaga UenoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Reo Yanagi Ren Takemoto Kenta Ono Tomonaga Ueno Light-induced levitation of ultralight carbon aerogels via temperature control
description	Abstract We demonstrate that ultralight carbon aerogels with skeletal densities lesser than the air density can levitate in air, based on Archimedes' principle, when heated with light. Porous materials, such as aerogels, facilitate the fabrication of materials with density less than that of air. However, their apparent density increases because of the air inside the materials, and therefore, they cannot levitate in air under normal conditions. Ultralight carbon aerogels, fabricated using carbon nanotubes, have excellent light absorption properties and can be quickly heated by a lamp owing to their small heat capacity. In this study, an ultralight carbon aerogel was heated with a halogen lamp and levitated in air by expanding the air inside as well as selectively reducing its density. We also show that the levitation of the ultralight carbon aerogel can be easily controlled by turning the lamp on and off. These findings are expected to be useful for various applications of aerogels, such as in communication and transportation through the sky.
format	article
author	Reo Yanagi Ren Takemoto Kenta Ono Tomonaga Ueno
author_facet	Reo Yanagi Ren Takemoto Kenta Ono Tomonaga Ueno
author_sort	Reo Yanagi
title	Light-induced levitation of ultralight carbon aerogels via temperature control
title_short	Light-induced levitation of ultralight carbon aerogels via temperature control
title_full	Light-induced levitation of ultralight carbon aerogels via temperature control
title_fullStr	Light-induced levitation of ultralight carbon aerogels via temperature control
title_full_unstemmed	Light-induced levitation of ultralight carbon aerogels via temperature control
title_sort	light-induced levitation of ultralight carbon aerogels via temperature control
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4f8c5f8ee8b14d5da86e0e1c8b6971e9
work_keys_str_mv	AT reoyanagi lightinducedlevitationofultralightcarbonaerogelsviatemperaturecontrol AT rentakemoto lightinducedlevitationofultralightcarbonaerogelsviatemperaturecontrol AT kentaono lightinducedlevitationofultralightcarbonaerogelsviatemperaturecontrol AT tomonagaueno lightinducedlevitationofultralightcarbonaerogelsviatemperaturecontrol
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Light-induced levitation of ultralight carbon aerogels via temperature control

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