Photochromism of a protonated 5-dimethylaminoindolylfulgide: a model of a non-destructive readout for a photon mode optical memory

1991 ◽  
pp. 1722 ◽  
Author(s):  
Yasushi Yokoyama ◽  
Takeshi Yamane ◽  
Yukio Kurita
Keyword(s):  
Optical Memory ◽  
Photon Mode ◽  
Non Destructive

Photochromism of 2-Hydroxy-4′-methoxychalcone: A Novel Photon-Mode Erasable Optical Memory System with Nondestructive Readout Ability

2000 ◽  
Vol 29 (2) ◽  
pp. 96-97 ◽  
Author(s):  
Hiroaki Horiuchi ◽  
Hitoshi Shirase ◽  
Tetsuo Okutsu ◽  
Ryoka Matsushima ◽  
Hiroshi Hiratsuka
Keyword(s):  
Optical Memory ◽  
Memory System ◽  
Photon Mode

scholarly journals Photo-Switchable Aggregation-Induced Emission of Bisthienylethene-Dipyrimido[2,1-b][1,3]benzothiazole Triad

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5382
Author(s):  
Shan-Shan Gong ◽  
Chun-Hong Zheng ◽  
Zhen-Zhen Chen ◽  
Dong-Zhao Yang ◽  
Mei Chi ◽  
...  
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Potential Application ◽  
Optical Memory ◽  
Light Irradiation ◽  
Pmma Film ◽  
High Contrast ◽  
Photochromic Properties ◽  
Non Destructive

A bisthienylethene-dipyrimido[2,1-b][1,3]benzothiazole (BTE-2PBT) triad has been designed and synthesized based on our recent discovery of PBTs as atypical propeller-shaped novel AIEgens. The triad not only maintains the photochromic properties of BTE moiety in solution, film, and solid state but also exhibits remarkable AIE properties. Moreover, the fluorescence of BTE-2PBT PMMA film could be modulated with high contrast by alternate UV and visible light irradiation. Photoerasing, rewriting, and non-destructive readout of fluorescent images on BTE-2PBT PMMA film well demonstrate its potential application as optical memory media.

Theoretical Analysis of Photon-Mode Super-Resolution Optical Memory Using Saturable Absorption Dye

1995 ◽  
Vol 2 (4) ◽  
pp. 225-228 ◽  
Author(s):  
Tsuyoshi Tsujioka ◽  
Toshio Harada ◽  
Minoru Kume ◽  
Kazuhiko Kuroki ◽  
Masahiro Irie
Keyword(s):  
Theoretical Analysis ◽  
Optical Memory ◽  
Super Resolution ◽  
Saturable Absorption ◽  
Photon Mode

Progress of the Phase-change Optical Disk Memory

2001 ◽  
Vol 674 ◽  
Author(s):  
Takeo Ohta ◽  
Noboru Yamada ◽  
Hiroaki Yamamoto ◽  
Tsuneo Mitsuyu ◽  
Takashi Kozaki ◽  
...  
Keyword(s):  
Phase Change ◽  
Thermal Diffusion ◽  
Silver Halide ◽  
Optical Memory ◽  
Optical Disk ◽  
Environmental Stability ◽  
Photon Mode ◽  
Heat Mode ◽  
Diffusion Phenomena ◽  
Disk Memory

ABSTRACTOptical memory has two recording modes: the photon-mode as a silver halide photograph and the heat-mode as a laser optical disk. Though laser heat-mode recording has the advantage of environmental stability, it has limitations due to thermal diffusion phenomena, which will be discussed in this paper.

Photochromic optical memory based on non-destructive IR read-out

2009 ◽  
Vol 8 (11) ◽  
pp. 1590 ◽  
Author(s):  
Yong-Chul Jeong ◽  
Seon Ho Kim ◽  
Hyejin Ko ◽  
Kigook Song ◽  
Kwang-Hyun Ahn ◽  
...  
Keyword(s):  
Optical Memory ◽  
Non Destructive

Novel Glassy Nematic Liquid Crystals for Non-destructive Rewritable Optical Memory and Photonic Switching

2003 ◽  
Vol 15 (13) ◽  
pp. 1061-1065 ◽  
Author(s):  
S.H. Chen ◽  
H.M.P. Chen ◽  
Y. Geng ◽  
S.D. Jacobs ◽  
K.L. Marshall ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Optical Memory ◽  
Photonic Switching ◽  
Non Destructive

Luminescence from individual dislocations in II-VI and III-V semiconductors

1991 ◽  
Vol 49 ◽  
pp. 834-835
Author(s):  
J W Steeds
Keyword(s):  
Group Iv ◽  
Luminescence Properties ◽  
Carrier Recombination ◽  
Transmission Electron ◽  
Wide Range ◽  
Basic Physics ◽  
Semiconducting Compounds ◽  
Diamond Group ◽  
Non Destructive ◽  
Technological Significance

There is a wide range of experimental results related to dislocations in diamond, group IV, II-VI, III-V semiconducting compounds, but few of these come from isolated, well-characterized individual dislocations. We are here concerned with only those results obtained in a transmission electron microscope so that the dislocations responsible were individually imaged. The luminescence properties of the dislocations were studied by cathodoluminescence performed at low temperatures (~30K) achieved by liquid helium cooling. Both spectra and monochromatic cathodoluminescence images have been obtained, in some cases as a function of temperature.There are two aspects of this work. One is mainly of technological significance. By understanding the luminescence properties of dislocations in epitaxial structures, future non-destructive evaluation will be enhanced. The second aim is to arrive at a good detailed understanding of the basic physics associated with carrier recombination near dislocations as revealed by local luminescence properties.

Forensic Identifications Aided by Scanning Electron Microscopy of Silicone-Epoxy Microreplicas of Calcified and Cornified Structures

1975 ◽  
Vol 33 ◽  
pp. 678-679 ◽  
Author(s):  
R.F. Sognnaes
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Forensic Science ◽  
George Washington ◽  
Epithelial Surface ◽  
Extended Application ◽  
Tissue Surfaces ◽  
Non Destructive ◽  
Scanning Electron ◽  
Surface Changes

Sufficient experience has been gained during the past five years to suggest an extended application of microreplication and scanning electron microscopy to problems of forensic science. The author's research was originally initiated with a view to develop a non-destructive method for identification of materials that went into objects of art, notably ivory and ivories. This was followed by a very specific application to the identification and duplication of the kinds of materials from animal teeth and tusks which two centuries ago went into the fabrication of the ivory dentures of George Washington. Subsequently it became apparent that a similar method of microreplication and SEM examination offered promise for a whole series of problems pertinent to art, technology and science. Furthermore, what began primarily as an application to solid substances has turned out to be similarly applicable to soft tissue surfaces such as mucous membranes and skin, even in cases of acute, chronic and precancerous epithelial surface changes, and to post-mortem identification of specific structures pertinent to forensic science.

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