Photosensitive Polymeric Materials for Two-Photon 3D WORM Optical Data Storage and Microfabrication

摘要

Since the first documented optical data storage (ODS) system was patented in the late 1920's the ODS capacity has been systematically increasing. This system, invented by the father of modern television John Logie Baird, was designed to store 15 minutes of poor quality TV by today's standards (7). Since then, researchers have come up with innovative new ways to attain ever smaller feature sizes used for writing, reading and processing digital information. The storage capacities of current ODS technologies, such as the compact disc (CD), digital video disc (DVD), and Blu-ray disc, depend on the bit density that can be achieved on the two-dimensional , 2D, recording surface. The bit densities in all of these technologies adhere to the Raleigh criterion, that, when applied to ODS, can be expressed as: