Please use this identifier to cite or link to this item: https://doi.org/10.1166/jnn.2008.330
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dc.titleMicro-brillouin study of the eigenvibrations of single isolated polymer nanospheres
dc.contributor.authorLi, Y.
dc.contributor.authorLim, H.S.
dc.contributor.authorWang, Z.K.
dc.contributor.authorNg, S.C.
dc.contributor.authorKuok, M.H.
dc.date.accessioned2014-06-17T07:59:20Z
dc.date.available2014-06-17T07:59:20Z
dc.date.issued2008-11
dc.identifier.citationLi, Y.,Lim, H.S.,Wang, Z.K.,Ng, S.C.,Kuok, M.H. (2008-11). Micro-brillouin study of the eigenvibrations of single isolated polymer nanospheres. Journal of Nanoscience and Nanotechnology 8 (11) : 5869-5872. ScholarBank@NUS Repository. <a href="https://doi.org/10.1166/jnn.2008.330" target="_blank">https://doi.org/10.1166/jnn.2008.330</a>
dc.identifier.issn15334880
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/64945
dc.description.abstractThe localized acoustic modes of single isolated polymethyl methacrylate (PMMA) and polystyrene nanospheres have been studied by micro-Brillouin light scattering. The measured mode frequencies are analyzed on the basis of the Lamb theory formulated for a sphere under free boundary conditions. By measuring light scattering from single isolated particles, placed atop a piece of polished silicon wafer, the free-surface conditions are almost experimentally realized. The observed spectral peaks are attributed to localized eigenvibrations whose frequencies scale as inverse sphere diameter, in accordance with Lamb's theory. The Young's moduli and Poisson ratios of the polymer spheres studied have been evaluated from fits to the experimental data. We have demonstrated that micro-Brillouin spectroscopy is a powerful technique for probing the acoustic dynamics and mechanical properties of nanostructures. Copyright © 2008 American Scientific Publishers. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1166/jnn.2008.330
dc.sourceScopus
dc.subjectEigenmodes
dc.subjectMechanical properties
dc.subjectMicro-brillouin
dc.subjectPolymer nanospheres
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1166/jnn.2008.330
dc.description.sourcetitleJournal of Nanoscience and Nanotechnology
dc.description.volume8
dc.description.issue11
dc.description.page5869-5872
dc.identifier.isiutNOT_IN_WOS
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