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AssigneePaul Scherrer Institut (PSI)
InventorsBettina Baumeister, Thomas A Jung, Ernst Meyer
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The invention is essentially characterized in that in a first step a substrate is provided, which is coated with defined pattern of protrusions of a coating layer of a different material, so that an interface is defined between the substrate and the coating layer. As an example, the patterned coating layer can be applied by first forming an essentially homogeneous coating layer, which is then partially removed by means of photolithographic and etching techniques, leaving nanometer sized protrusions in that layer. As a next step, the surface provided with these structures is modified by selectively removing protrusions by means of a micro-device. Such a micro-device can be formed in a similar way to a scanning probe microscope (SPM) tip. The presence or absence of a protrusion represents a readable data bit information.
A method for storing an information bit comprising the steps of
A memory element comprising
A write once read many times (WORM) data storage medium comprising
Storage device comprising at least one micro-device, further comprising means for moving said at least one micro-device with respect to a storage medium and controlling means for controlling said at least one micro-device, said controlling means comprising means for controlling said means for moving said at least one micro-device in a manner that protrusions of said storage medium, being separated from a substrate of said storage medium by an interface, are selectively broken off.
Use of a method comprising the steps of
Dependencies are inferred from the claim text.