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Selective activation of material property changes in photostructurable glass ceramic materials by laser photophysical excitation

Paper ID Volume ID Publish Year Pages File Format Full-Text
29041 44113 2006 9 PDF Available
Title
Selective activation of material property changes in photostructurable glass ceramic materials by laser photophysical excitation
Abstract

We propose a novel approach to material processing: one that implements laser photoexcitation in a direct-write scheme to establish initial excitation states in a protean material that enables the regulation of a particular phase transformation pathway. The effect of regulating the phase transformation process is the controlled alteration of a specific material property. As a test of the concept, we have investigated a class of photostructurable glass ceramics (PSGCs) of the lithium aluminosilicate family. By controlling the incident laser irradiance (i.e., the material exposure), we can affect the material solubility, optical transmission, and material hardness following the phase transformation process. To further enhance the fidelity of the laser photo-induced reaction process, we have developed a scheme that permits the controlled delivery of laser photons during complex motion patterning maneuvers.

Keywords
Photochemistry and photophysics of laser processing; 3D microfabrication; Photolytic control of material properties of photostructurable glass ceramics; Variable dose direct-write patterning
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Selective activation of material property changes in photostructurable glass ceramic materials by laser photophysical excitation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 182, Issue 3, 10 September 2006, Pages 310–318
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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