Digital imaging and optical storage technology helps open up railway archives at National Railway Museum

1993 ◽  
Vol 11 (2) ◽  
pp. 108-109
Keyword(s):  
Digital Imaging ◽  
Optical Storage ◽  
Storage Technology

Research on Photochromic Compounds with Synthesis and Properties of a Novel Unsymmetrical Diarylethene with a Benzothiophene and a Pyrrole Group

2014 ◽  
Vol 1003 ◽  
pp. 23-26
Author(s):  
Hong Jing Jia ◽  
Ying Long Fu ◽  
Cong Bin Fan
Keyword(s):  
Thermal Stability ◽  
Potential Application ◽  
Uv Light ◽  
Optical Storage ◽  
Pmma Film ◽  
Good Thermal Stability ◽  
Photochromic Compounds ◽  
Storage Technology ◽  
Hexane Solution

A new unsymmetrical photochromic diarylethene1o, which is named [1-(2-methyl-benzothiophene)-2-(2-cyano-1,5-dimethyl-4-pyrryl)]perfluorocyclopentene, was synthesized. We used it to accomplish recording by optical storage technology as memory medium. Then its photochromic both in hexane solution and in PMMA film and kinetics experiment were investigated in detail. The result indicated that this diarylethene had good thermal stability and exhibited reversible photochromism, changing the color from colorless to violet in hexane solution upon appropriate irradiation with 297 nm UV light, respectively. What is more, the kinetic experiments illustrated that the cyclization/cycloreversion process of this compound was determined to be the zeroth/first reaction. The results demonstrated that the unsymmetrical diarylethene compound1o, which we have synthesized, had attractive properties for potential application in optical storage.

scholarly journals Optical Storage Technology Development in Taiwan.

2001 ◽  
Vol 25 (3−2) ◽  
pp. 177-179
Author(s):  
Eric Lean ◽  
Jau-Jiu Ju ◽  
Tzu-Ping Yang ◽  
Der-Ray Huang
Keyword(s):  
Technology Development ◽  
Optical Storage ◽  
Storage Technology
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