Ultrafast Vibrational Energy Transfer from Photoexcited Carbon Nanotubes to Proteins

Carbon nanotube (CNT) and protein complexes are one of the most important nanomaterials in physical and biological fields, especially for building biomedical systems based on their unique electronic and optical properties. However, there is little knowledge about ultrafast vibrational phenomena and...

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Main Authors: Nakayama Tomohito, Yoshizawa Shunsuke, Hirano Atsushi, Tanaka Takeshi, Shiraki Kentaro, Hase Muneaki
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2019/10/epjconf_up2019_05009.pdf
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spelling doaj-bbb80b0af1264c3db6ba16e821f883f32021-08-02T04:01:03ZengEDP SciencesEPJ Web of Conferences2100-014X2019-01-012050500910.1051/epjconf/201920505009epjconf_up2019_05009Ultrafast Vibrational Energy Transfer from Photoexcited Carbon Nanotubes to ProteinsNakayama Tomohito0Yoshizawa Shunsuke1Hirano Atsushi2Tanaka Takeshi3Shiraki Kentaro4Hase Muneaki5Division of Applied Physics, Faculty of Pure and Applied Sciences, University of TsukubaDivision of Applied Physics, Faculty of Pure and Applied Sciences, University of TsukubaNanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)Division of Applied Physics, Faculty of Pure and Applied Sciences, University of TsukubaDivision of Applied Physics, Faculty of Pure and Applied Sciences, University of TsukubaCarbon nanotube (CNT) and protein complexes are one of the most important nanomaterials in physical and biological fields, especially for building biomedical systems based on their unique electronic and optical properties. However, there is little knowledge about ultrafast vibrational phenomena and energy flow in CNT-protein complexes. Here, we study the ultrafast vibrational energy transfer (VET) from photoexcited carbon nanotubes to adsorbed materials, such as protein and surfactant, by observing relaxation dynamics of coherent radial breathing modes (RBMs) of CNT. As a result, we found the vibrational relaxation time of the RBMs depends on phonon density of states (PDOS) of adsorbed materials. Our findings are particularly useful for designing a highly efficient phonon energy flow system from photo-excited CNT to biomaterials, and such vibrational energy transfer can be controlled by the PDOS originated from the structure of coupled biomaterials.https://www.epj-conferences.org/articles/epjconf/pdf/2019/10/epjconf_up2019_05009.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Nakayama Tomohito
Yoshizawa Shunsuke
Hirano Atsushi
Tanaka Takeshi
Shiraki Kentaro
Hase Muneaki
spellingShingle Nakayama Tomohito
Yoshizawa Shunsuke
Hirano Atsushi
Tanaka Takeshi
Shiraki Kentaro
Hase Muneaki
Ultrafast Vibrational Energy Transfer from Photoexcited Carbon Nanotubes to Proteins
EPJ Web of Conferences
author_facet Nakayama Tomohito
Yoshizawa Shunsuke
Hirano Atsushi
Tanaka Takeshi
Shiraki Kentaro
Hase Muneaki
author_sort Nakayama Tomohito
title Ultrafast Vibrational Energy Transfer from Photoexcited Carbon Nanotubes to Proteins
title_short Ultrafast Vibrational Energy Transfer from Photoexcited Carbon Nanotubes to Proteins
title_full Ultrafast Vibrational Energy Transfer from Photoexcited Carbon Nanotubes to Proteins
title_fullStr Ultrafast Vibrational Energy Transfer from Photoexcited Carbon Nanotubes to Proteins
title_full_unstemmed Ultrafast Vibrational Energy Transfer from Photoexcited Carbon Nanotubes to Proteins
title_sort ultrafast vibrational energy transfer from photoexcited carbon nanotubes to proteins
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2019-01-01
description Carbon nanotube (CNT) and protein complexes are one of the most important nanomaterials in physical and biological fields, especially for building biomedical systems based on their unique electronic and optical properties. However, there is little knowledge about ultrafast vibrational phenomena and energy flow in CNT-protein complexes. Here, we study the ultrafast vibrational energy transfer (VET) from photoexcited carbon nanotubes to adsorbed materials, such as protein and surfactant, by observing relaxation dynamics of coherent radial breathing modes (RBMs) of CNT. As a result, we found the vibrational relaxation time of the RBMs depends on phonon density of states (PDOS) of adsorbed materials. Our findings are particularly useful for designing a highly efficient phonon energy flow system from photo-excited CNT to biomaterials, and such vibrational energy transfer can be controlled by the PDOS originated from the structure of coupled biomaterials.
url https://www.epj-conferences.org/articles/epjconf/pdf/2019/10/epjconf_up2019_05009.pdf
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AT tanakatakeshi ultrafastvibrationalenergytransferfromphotoexcitedcarbonnanotubestoproteins
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