Optimized medium with anisotropic dipole emission for fluorescent single or multilayer storage
AssigneeKoninklijke Phillips Electronics N.V.
InventorsMarcello Balistreri, Christopher Busch, Johannes Wilderbeek, Milan Saalmink, Wilma Van Es-Spiekman, Emiel Peeters, Dirk Broer
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Abstract
Optical data storage method, reading method, device (40) and storage medium (42,43), comprising storing data by modifying optical properties of polymer material (42), whereby writing is initiated by reorientation of photo-orientable units, typically by illuminating with light at a wavelength that initiates the reorientation, and whereby reading of data includes collection of anisotropic emission from dipole emitters.
Claims22
A method for writing data in a storage medium (42,43) comprising polymer material (10,42) by modifying its optical properties, said method comprising the steps of:
- heating up the material above the glass-transition temperature (Tg),
- performing alignment of said material,
- initiating the writing by reorientation of photo-orientable-groups (R) in the polymer material (10,42) by means of illuminating with light at a wavelength and for a time period, or other means, that initiates the reorientation, and that enables anisotropic emission from the storage medium (42,43) during a reading process.
Device (40) for optical data storage, comprising:
- polymer material (10,42) as storage medium,
- means for heating up the material above the glass-transition temperature (Tg),
- means for performing alignment of the material, and
- means for initiating the writing by reorientation of photo-orientable units of the polymer (10,42) by illuminating with light at a wavelength and for a time period, or other means, that initiates the reorientation, whereby data can be stored in the polymer material by modifying its optical properties, enabling anisotropic emission from the device during a reading process.
Storage medium (42,43) comprising polymer material (10,42), adapted to store data by modifying its optical properties, said polymer material comprising photo-orientable groups (R), that can be reoriented, subsequent to being aligned, upon illumination with light at a wavelength and for a time period that initiates the reorientation, where the photo-orientable groups can self-develop at a suitable temperature, typically above the glass transition temperature (Tg), said polymer material comprising anisotropic fluorescent emitters, enabling an anisotropic emission of fluorescence during reading said stored data.
Dependencies are inferred from the claim text.