| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9789536 | Physica E: Low-dimensional Systems and Nanostructures | 2005 | 5 Pages |
Abstract
ZnS semiconductor nanoparticles with average size of 3.4 nm were prepared in situ in chitosan film. TEM, UV-vis spectra and PL spectra show the ZnS nanoparticles in chitosan template were monodispersed and well passivated. The two-photon absorption coefficient (β) of the chitosan-ZnS quantum dots (QDs) nanocomposite film was obtained to be 2.29Ã102 cm/Gw from a standard Z-scan setup with femtosecond laser pusles at 790 nm wavelength. Results show the novel biomacromolecule/QDs nanocomposite film has large third-order optical nonlinear absorption, the mechanism responsible for which was discussed.
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Authors
Xiaohui Wang, Yumin Du, Sha Ding, Lihong Fan, Xiaowen Shi, QuQuan Wang, Guiguang Xiong,