D’Britto, V. ; Suchand Sandeep, C. S. ; Philip, R. ; Prasad, B. L. V. (2009) Optical limiting properties of hydrophobic poly(etherimide) membranes embedded with isolated and aggregated gold nanostructures Colloids and Surfaces A: Physicochemical and Engineering Aspects, 352 (1-3). pp. 79-83. ISSN 0927-7757
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.colsurfa.2009.10.002
Abstract
A simple method to incorporate spherical or aggregated nanostructures of gold into hydrophobic poly (etherimide) membranes is demonstrated and their comparative nonlinear optical properties are investigated. When excited at 532 nm using laser pulses of 7 ns duration, a reduced transmission behaviour in both the cases, viz. polymers embedded with isolated nanoparticles and their aggregates is observed. This fits to a three-photon type nonlinear absorption process and is attributed to excited state absorption occurring in the nanostructures. Interestingly, the nonlinearity is more prominent in the aggregated nanostructures compared to the spherical nanostructures. These materials are potential candidates for optical limiting applications.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Optical Limiting; Nonlinear Optical Properties; Gold Nanoparticles; Phase Transfer; Nanoparticle Aggregation; Polymer Nanocomposites |
| ID Code: | 105353 |
| Deposited On: | 01 Feb 2018 17:11 |
| Last Modified: | 01 Feb 2018 17:11 |
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