Biomolecular optical data storage and data encryption

IEEE Transactions on Nanobioscience
Thorsten FischerNorbert Hampp

Abstract

The use of bacteriorhodopsin (BR) as an active layer in write-once-read-many optical storage is presented. This novel feature of BR materials may be used on a wide variety of substrates, among them transparent substrates but also paper and plastics. The physical basis of the recording process is polarization-sensitive two-photon absorption. As an example for this new BR application, an identification card equipped with an optical recording strip is presented, which has a capacity of about 1 MB of data. The recording density currently used is 125 kB/cm2, which is far from the optical limits but allows operation with cheap terminals using plastic optics. In the examples given, data are stored in blocks of 10 kB each. A special optical encryption procedure allows the stored data to be protected from unauthorized reading. The molecular basis of this property is again the polarization-sensitive recording mechanism. The unique combination of optical storage, photochromism, and traceability of the BR material is combined on the single-molecule level. BR introduces a new quality of storage capability for applications with increased security and anticounterfeiting requirements.

Citations

Dec 22, 2006·IEEE Transactions on Nanobioscience·Sukhdev Roy, Kapil Kulshrestha
Sep 24, 2004·IEEE Transactions on Nanobioscience·Parag Sharma, Sukhdev Roy
Nov 18, 2005·Journal of Theoretical Biology·Victor Sivozhelezov, Claudio Nicolini
Jul 28, 2012·The Journal of Physical Chemistry. B·Martin ImhofNorbert Hampp
Apr 20, 2012·The Journal of Physical Chemistry. B·Daniel RhinowNorbert Hampp
Apr 28, 2018·Sensors·Yu-Tao LiTian-Ling Ren
Oct 18, 2012·The Journal of Physical Chemistry Letters·Martin ImhofNorbert Hampp

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