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https://doi.org/10.1051/jp4:2005129011
| Title: | Confined acoustic modes in nanoparticles | Authors: | Li, Y. Lim, H.S. Wang, Z.K. Ng, S.C. Kuok, M.H. |
Issue Date: | 2005 | Citation: | Li, Y., Lim, H.S., Wang, Z.K., Ng, S.C., Kuok, M.H. (2005). Confined acoustic modes in nanoparticles. Journal De Physique. IV : JP 129 : 51-54. ScholarBank@NUS Repository. https://doi.org/10.1051/jp4:2005129011 | Abstract: | Brillouin scattering from aggregates of monodisperse polystyrene spheres has been measured as a function of their diameters (20 - 990nm). In this range of sphere sizes studied, confined acoustic modes and two types of bulk longitudinal acoustic modes are observed. One type exists within larger spheres (diameter > 700 nm), while the other propagates in aggregates of smaller spheres (diameter ≤ 80 nm) which are considered as polystyrene-air composites. The frequencies of the confined acoustic modes are found to be proportional to inverse sphere diameter, in accordance with Lamb's theory. © EDP Sciences. | Source Title: | Journal De Physique. IV : JP | URI: | http://scholarbank.nus.edu.sg/handle/10635/98661 | ISSN: | 11554339 | DOI: | 10.1051/jp4:2005129011 |
| Appears in Collections: | Staff Publications |
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