Photodimerization in dipeptides for high capacity optical digital storage

P.S. Ramanujam, R.H. Berg

    Research output: Contribution to journalJournal articleResearchpeer-review


    We have developed peptide materials with chromophores that undergo cycloaddition, suitable for terabit optical digital storage in a 5.25 in. disc. The rationale behind this design is that the length and rigidity of the backbone can be adjusted to facilitate the formation of a photodimer without large physical movements of the chromophores on exposure to UV light. Initially strongly absorbing films transmit up to 50% of light on irradiation at dimerizing wavelengths. This property can be utilized to record grey levels. An intensity-dependent transmission behavior has been observed that may enable data to be written and read at the same wavelength. (C) 2004 American Institute of Physics.
    Original languageEnglish
    JournalApplied Physics Letters
    Issue number10
    Pages (from-to)1665-1667
    Publication statusPublished - 2004

    Cite this