Random lasing from structurally-modulated silk fibroin nanofibers

Abstract Structural arrangement and dimension play vital roles in wave transport and amplification as they can restrict the volume explored by the waves. However, it is challenging to systematically investigate the interplay among structural, optical, and mechanical properties, in part because of li...

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Autores principales:	Soocheol Kim, SungYeun Yang, Seung Ho Choi, Young L. Kim, WonHyoung Ryu, Chulmin Joo
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d24f40292e3d4523a3bd720cb018ba9e
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spelling	oai:doaj.org-article:d24f40292e3d4523a3bd720cb018ba9e2021-12-02T11:40:57ZRandom lasing from structurally-modulated silk fibroin nanofibers10.1038/s41598-017-04881-52045-2322https://doaj.org/article/d24f40292e3d4523a3bd720cb018ba9e2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04881-5https://doaj.org/toc/2045-2322Abstract Structural arrangement and dimension play vital roles in wave transport and amplification as they can restrict the volume explored by the waves. However, it is challenging to systematically investigate the interplay among structural, optical, and mechanical properties, in part because of limited experimental platforms that modulate the structural arrangement in a continuous manner. We present light amplification action in Rhodamine B doped silk fibroin (SF) nanofibrous scaffolds and its modulation via the control of the alignment or directionality of SF nanofibers through an electrospinning procedure. Random lasing features of such scaffolds are examined as a function of structural arrangement of the SF nanofibers, and optical-structural-mechanical relationships of the SF-based structures are examined. As SF nanofibers are aligned parallel undergoing a transition from three to quasi-two dimension, light amplification features (e.g., lasing threshold and output power) enhanced, which also strongly correlated with mechanical characteristics (i.e., Young’s moduli) of the scaffolds. We confirm such optical characteristics using quasi-mode analyses based on the finite element method. We further demonstrate non-contact, in situ measurement of alternations in lasing features of the scaffolds while the specimens are under tensile loads. These results may highlight potential utility of the scaffolds as a flexible and biocompatible sensor.Soocheol KimSungYeun YangSeung Ho ChoiYoung L. KimWonHyoung RyuChulmin JooNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Soocheol Kim SungYeun Yang Seung Ho Choi Young L. Kim WonHyoung Ryu Chulmin Joo Random lasing from structurally-modulated silk fibroin nanofibers
description	Abstract Structural arrangement and dimension play vital roles in wave transport and amplification as they can restrict the volume explored by the waves. However, it is challenging to systematically investigate the interplay among structural, optical, and mechanical properties, in part because of limited experimental platforms that modulate the structural arrangement in a continuous manner. We present light amplification action in Rhodamine B doped silk fibroin (SF) nanofibrous scaffolds and its modulation via the control of the alignment or directionality of SF nanofibers through an electrospinning procedure. Random lasing features of such scaffolds are examined as a function of structural arrangement of the SF nanofibers, and optical-structural-mechanical relationships of the SF-based structures are examined. As SF nanofibers are aligned parallel undergoing a transition from three to quasi-two dimension, light amplification features (e.g., lasing threshold and output power) enhanced, which also strongly correlated with mechanical characteristics (i.e., Young’s moduli) of the scaffolds. We confirm such optical characteristics using quasi-mode analyses based on the finite element method. We further demonstrate non-contact, in situ measurement of alternations in lasing features of the scaffolds while the specimens are under tensile loads. These results may highlight potential utility of the scaffolds as a flexible and biocompatible sensor.
format	article
author	Soocheol Kim SungYeun Yang Seung Ho Choi Young L. Kim WonHyoung Ryu Chulmin Joo
author_facet	Soocheol Kim SungYeun Yang Seung Ho Choi Young L. Kim WonHyoung Ryu Chulmin Joo
author_sort	Soocheol Kim
title	Random lasing from structurally-modulated silk fibroin nanofibers
title_short	Random lasing from structurally-modulated silk fibroin nanofibers
title_full	Random lasing from structurally-modulated silk fibroin nanofibers
title_fullStr	Random lasing from structurally-modulated silk fibroin nanofibers
title_full_unstemmed	Random lasing from structurally-modulated silk fibroin nanofibers
title_sort	random lasing from structurally-modulated silk fibroin nanofibers
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/d24f40292e3d4523a3bd720cb018ba9e
work_keys_str_mv	AT soocheolkim randomlasingfromstructurallymodulatedsilkfibroinnanofibers AT sungyeunyang randomlasingfromstructurallymodulatedsilkfibroinnanofibers AT seunghochoi randomlasingfromstructurallymodulatedsilkfibroinnanofibers AT younglkim randomlasingfromstructurallymodulatedsilkfibroinnanofibers AT wonhyoungryu randomlasingfromstructurallymodulatedsilkfibroinnanofibers AT chulminjoo randomlasingfromstructurallymodulatedsilkfibroinnanofibers
_version_	1718395546686717952

Random lasing from structurally-modulated silk fibroin nanofibers

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