Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0167-577X(01)00336-6
Title: PbS-polymer nanocomposite with third-order nonlinear optical response in femtosecond regime
Authors: Liu, B.
Li, H.
Chew, C.H. 
Que, W.
Lam, Y.L.
Kam, C.H.
Gan, L.M. 
Xu, G.Q. 
Keywords: HRTEM
Microemulsion
Nanocomposite
Nonlinearity
PbS
Polymerisation
Z-scan
Issue Date: Dec-2001
Citation: Liu, B., Li, H., Chew, C.H., Que, W., Lam, Y.L., Kam, C.H., Gan, L.M., Xu, G.Q. (2001-12). PbS-polymer nanocomposite with third-order nonlinear optical response in femtosecond regime. Materials Letters 51 (6) : 461-469. ScholarBank@NUS Repository. https://doi.org/10.1016/S0167-577X(01)00336-6
Abstract: A new method is developed using polymerized bicontinuous microemulsions to synthesize PbS-polymer nanocomposite having large nonlinear optical response. Besides a polymeric nonionic surfactant, ω-methoxy poly(ethylene oxide) 40 undecyl-α-methacrylate (C 1-PEO-C 11-MA-40), a system consisting of methyl methacrylate (MMA), acronitrile (AN), ethylene glycol dimethacrylate (EGDMA), aqueous solutions of Pb(NO 3) 2/thioacetamide (TAA) was selected. High-resolution transmission electron microscopy (HRTEM) results indicated PbS nanocrystals with a width of 5 nm and a cubic structure is formed in water domains. A single-beam Z-scan measurement showed that the nanocomposite polymer has a nonresonant and negative nonlinear refractive index (γ) of 6.8 × 10 -12 cm 2/W at 780 nm. The origin of the large nonlinear optical response based on the contribution of surface recombination owing to high surface-to-volume ratios of PbS nanoparticles to the optical nonlinearity is discussed. © 2001 Elsevier Science B.V. All rights reserved.
Source Title: Materials Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/94485
ISSN: 0167577X
DOI: 10.1016/S0167-577X(01)00336-6
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

56
checked on Dec 6, 2018

WEB OF SCIENCETM
Citations

56
checked on Nov 28, 2018

Page view(s)

50
checked on Nov 23, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.