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Fabrication, ordering and optical pr...

Bohn, Justin Jeffrey.

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Fabrication, ordering and optical properties of photonic crystals prepared from crystalline colloidal arrays.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Fabrication, ordering and optical properties of photonic crystals prepared from crystalline colloidal arrays./
Author:	Bohn, Justin Jeffrey.
Description:	117 p.
Notes:	Source: Dissertation Abstracts International, Volume: 71-08, Section: B, page: 4817.
Contained By:	Dissertation Abstracts International71-08B.
Subject:	Chemistry, Analytical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3417251
ISBN:	9781124145860

Fabrication, ordering and optical properties of photonic crystals prepared from crystalline colloidal arrays.
Bohn, Justin Jeffrey.

Fabrication, ordering and optical properties of photonic crystals prepared from crystalline colloidal arrays. - 117 p.

Source: Dissertation Abstracts International, Volume: 71-08, Section: B, page: 4817.

Thesis (Ph.D.)--University of Pittsburgh, 2010.

We developed novel understandings pertaining to the ordering and optical properties of crystalline colloidal array (CCA) materials and applied these understandings to develop novel non-close-packed inverted photonic crystal materials. CCA materials are highly charged electrostatically stabilized colloidal particles in water which readily form face centered cubic or body centered cubic lattice structures. Because their periodicity is on the order of the wavelength of light, CCA materials have the ability to Bragg diffract light in the UV, visible and NIR regions of the electromagnetic spectrum.

ISBN: 9781124145860Subjects--Topical Terms:

586156
Chemistry, Analytical.

Fabrication, ordering and optical properties of photonic crystals prepared from crystalline colloidal arrays.
LDR:03302nam 2200313 4500 001 1404706
005 20111130125240.5
008 130515s2010 ||||||||||||||||| ||eng d
020 $a 9781124145860
035 $a (UMI)AAI3417251
035 $a AAI3417251
040 $a UMI $c UMI
100 1 $a Bohn, Justin Jeffrey. $3 1684049
245 1 0 $a Fabrication, ordering and optical properties of photonic crystals prepared from crystalline colloidal arrays.
300 $a 117 p.
500 $a Source: Dissertation Abstracts International, Volume: 71-08, Section: B, page: 4817.
500 $a Adviser: Sanford Asher.
502 $a Thesis (Ph.D.)--University of Pittsburgh, 2010.
520 $a We developed novel understandings pertaining to the ordering and optical properties of crystalline colloidal array (CCA) materials and applied these understandings to develop novel non-close-packed inverted photonic crystal materials. CCA materials are highly charged electrostatically stabilized colloidal particles in water which readily form face centered cubic or body centered cubic lattice structures. Because their periodicity is on the order of the wavelength of light, CCA materials have the ability to Bragg diffract light in the UV, visible and NIR regions of the electromagnetic spectrum.
520 $a We utilized time resolved normal incidence reflection spectroscopy to probe the degree and kinetics of CCA ordering during the CCA crystallization process. Bragg diffraction interference fringe intensity is used to qualitatively determine the overall CCA ordering between CCA samples which have incremental additions of added ionic impurity.
520 $a We defined the physical mechanism for anomalous reflection peaks obtained in the specular reflection direction from photonic crystal materials. We utilize variable angle specular reflection spectroscopy to probe angular ranges about the normal to the (111) planes of an fcc CCA to monitor the dispersion of anomalous reflection peaks. We correlated these reflection peaks to the diffraction from higher order Miller index crystal planes through Bragg's Law. We explain the origin of these peaks as the result of a multiple diffraction process whereby light is first Bragg diffracted into a beam from a set of higher order Miller index planes and consecutively diffracted by the in plane (111) periodicity into the (111) specular reflection direction.
520 $a We also uncovered a novel use for CCA and PCCA materials allowing us to fabricate a non-close-packed inverted photonic crystal material. Our novel fabrication method consists of an infiltration and condensation of a sol-gel precursor into the hydrogel matrix of a PCCA and then the subsequent removal of the PCCA material. We show that the original high ordering of the CCA is maintained through and in-depth study which examining the (111) in-plane ordering. Tuning the CCA particle number density, prior to the fabrication process provides the ability to readily tune the Bragg diffracted wavelength of the final inverted photonic crystal.
590 $a School code: 0178.
650 4 $a Chemistry, Analytical. $3 586156
650 4 $a Physics, Optics. $3 1018756
690 $a 0486
690 $a 0752
710 2 $a University of Pittsburgh. $3 958527
773 0 $t Dissertation Abstracts International $g 71-08B.
790 1 0 $a Asher, Sanford, $e advisor
790 $a 0178
791 $a Ph.D.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3417251