Enhanced Bragg reflections from size-matched heterostructure photonic crystal thin films prepared by the Langmuir-Blodgett method
Bardosova, M, Pemble, ME, Povey, IM, Tredgold, RH and Whitehead, DE 2006, 'Enhanced Bragg reflections from size-matched heterostructure photonic crystal thin films prepared by the Langmuir-Blodgett method' , Applied Physics Letters, 89 (9) , 093116.
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The Langmuir-Blodgett method was used to engineer photonic crystal thin films of an AB architecture. Structures were studied by transmittance and reflectance spectroscopies. For an AB structure in which the silica particle diameter B is twice that of A, reflectance features associated with the first order Bragg peak for the ``A'' domain are only observed when the structure is probed from the A side of the structure. Furthermore, this feature is enhanced in intensity compared to that for a structure consisting solely of A particles. These findings are attributed to a matching of first and second order Bragg processes.
|Uncontrolled Keywords:||Light reflection, photonic crystals, thin films, Langmuir-Blodgett films, optical films, reflectivity, silicon compounds, visible spectra, infrared spectra|
|Themes:||Subjects / Themes > Q Science > QC Physics|
Subjects outside of the University Themes
|Schools:||Colleges and Schools > College of Science & Technology|
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
|Journal or Publication Title:||Applied Physics Letters|
|Publisher:||American Institute of Physics|
|Depositing User:||H Kenna|
|Date Deposited:||23 Aug 2007 11:38|
|Last Modified:||27 Sep 2011 12:20|
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