Tridimensional (3D) Optical Storage

Visible-light-driven bistable photoswitching with enhanced solid state NIR-fluorescence for multi-level optical storage

“…It is of great significance to develop higher density, larger capacity optical storage mediums, and technologies. At present, the technologies to improve the optical data storage density mainly include three-dimensional (3D) or multi-layer storage, 4 super-resolution storage, 5 and multi-level storage. 6 Among them, the 3D storage and super-resolution technology rely strongly on complicated or expensive devices.…”

“…Photoswitchable fluorescent molecules are photochromic materials working at the single-molecule level and are sensitive to light irradiations to generate reversible changes in physical properties and can be utilized for optical information storage, such as programmable patterning, 7 anti-counterfeiting 8 and high-density data storage. 4 Photon-model recording technology based on photochromic materials shows great promise for high-density data storage. 9 Initially, photoswitchable absorption changes (color, reflectivity changes, etc. )…”

A Reflectivity Enhanced 3D Optical Storage Nanostructure Application Based on Direct Laser Writing Lithography

“…In the past few years, several approaches have been proposed for increasing optical storage density. Some of these approaches include multi-wavelength and multi-level storage [ 8 , 9 ], fluorescent nanocrystals [ 10 ], two-photon excitation [ 11 ], optical near-field recording [ 12 ], polarization modulation [ 13 ], readout scheme-dependent (DNA-based [ 14 ]), and volume product-dependent (holographic memory [ 15 ]). However, each approach is associated with certain inevitable drawbacks.…”