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SUMMARY:Porous Multilayers: Novel Multifunctional Optical Materials for Ap
 plications - Dr. Hernán Míguez\, Institute of Materials Science of Sevil
 le\, Spain
DTSTART:20110527T130000Z
DTEND:20110527T140000Z
UID:TALK31479@talks.cam.ac.uk
CONTACT:Erika Eiser
DESCRIPTION:In recent times\, several synthetic pathways have been develop
 ed to create multilayered materials of diverse composition that combine ac
 cessible porosity and optical properties of structural origin\, i.e.\, not
  related to absorption. These materials posses a refractive index that var
 ies periodically along one direction\, which give rise to optical interfer
 ence effects characteristic of Bragg stacks or one-dimensional photonic cr
 ystals (1DPC). The technological potential of such porous optical material
 s has recently been demonstrated in various fields such as biological and 
 chemical sensing\, photovoltaics\, or radiation shielding. In all cases\, 
 improved performance is achieved as a result of the added functionality po
 rosity brings on. Also\, they offer the possibility to study fundamental l
 ight absorption and emission phenomena in materials that could not be inte
 grated in photonic structures before\, as well as to develop environmental
 ly responsive coatings with them. In this seminar\, a unified picture of t
 his emerging field is provided\, special emphasis being put both in the op
 portunities it offers in the fields of energy\, sensing and radiation prot
 ection.
LOCATION:Small Lecture Theatre\, Cavendish Laboratory
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