Optical Parallel Data Processing Using Organic Photochromic Materials

Massively Parallel Processing Using Optical Interconnections

This chapter discusses why and how optical communication technology might be used in future large scale parallel processing systems. Commercial systems currently being built can interconnect thousands of processors, and future systems may be even larger. Systems with thousands of processors are often called massively parallel systems. In these systems, the ability to eeciently communicate and s...

Prediction of Thermal Stability of Photochromic Materials Used for Optical Switching and Data Storage Applications

Certain organic compounds posess the ability to change color under the influence of light, called photochromism. This change is often due to ultrafast chemical transition from open to closed ring isomers (photocyclization). Information thechnology applications of these photochromics require the reverse transformation to be very slow in the dark. We have applied Density Functional Theory (DFT) m...

New Photochromic Materials

The aim of this work was the synthesis and study of photochromic compounds with new properties. Five dithienylethene type compounds (1a-3a and 1b-2b) were synthesized and studied. They can reversibly interconvert between two thermally stable forms, an open and a closed one, by using light of different wavelengths as triggers. Compounds 2 and 3 represent oligothiophenes endowed with a photoactiv...

Photochromic organic–inorganic hybrid materialsw

Optical transitions in new trends organic materials

The PTCDA (3,4,9,10-Perylene-tetracarboxylic dianhydride) and the NTCDA (1,4,5,8Naphtalenetetracarboxylic dianhydride) are aromatic, stable, planar and highly symmetric with unusual electrical properties. The PTCDA is a semiconductor organic crystalline of particular interest due to its excellent properties and electronic potential that are used in optoelectronic devices and the NTCDA it is mon...