 Semiconductor laser device |
| What is claimed is: 1. In a semiconductor laser device, the combination of an active layer that ... |
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| Optical fiber cable provided with stabilized waterblocking material |
| Referring now to FIGS. 1 and 2, there is shown a communications cable which may incorporate the ... |
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| Geometrical control of device corner threshold |
| It is therefore an object of the present invention to provide a technique of adjustment of corner ... |
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| Universal frequency synthesizer |
| OF THE INVENTION In the accompanying drawing, which forms a part of the specification and are to ... |
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| Multi-layer reflector for electroluminescent device |
| A multi-layer reflector is utilized on at least one facet surface of a semiconductor ... |
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| Single filament semiconductor laser with large emitting area |
| A semiconductor laser includes a body of semiconductor material having a substrate with a pair of ... |
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| Semiconductor laser having a doped surface zone |
| What is claimed is: 1. A semiconductor laser having a semiconductor body comprising a resonator and ... |
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| Planar epitaxial refill using liquid phase epitaxy |
| We claim: 1. A method of refilling grooves in a silicon wafer of predetermined conductivity type by ... |
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| Semiconductor integrated circuit device with a high tolerance against abnormally high input voltage |
| I claim: 1. A semiconductor integrated device having a high tolerance against abnormally high input ... |
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| Electron beam enhanced surface modification for making highly resolved structures |
| Against the described background, it is therefore a general object of the present invention to ... |
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Recording medium
| Details |
Inventors: Kazan, Benjamin; Hagstrom, Stig B. M.;
Assignee: Xerox Corporation (Stamford, CT)
Primary Examiner: Herbert; Thomas J.
Assistant Examiner:
Attorney, Agent or Firm: Carothers, Jr.; W. Douglas
A recording and readout information system having atomic scale densities comprises a recording medium having a carrier and means to form a pattern of atomic particles on the surface of the carrier. The atomic particles having an affinity for the carrier and can adhere to the surface to form a relatively adhesive and stable bond. The pattern of atomic particles produced on the carrier are representative of recorded information, e.g. binary represented information, of ultra high density based upon the size and spacing of such particles, which is in the range, for example, of 5 .ANG.(0.5 nm) to 10 .ANG.(1 nm). A preferred embodiment of the invention comprises a recording medium with an adsorbent carrier, means to form a pattern of adsorbate atomic particles on the surface of the adsorbent carrier, the adsorbate atomic particles having an adsorptive affinity for the adsorbent carrier. The adsorptive particles having an adsorptive affinity for the adsorbent carrier due, at least in part, to electrical attraction characteristics between the adsorbate atomic particles and the adsorbent carrier. Readout means, utilizing the tunnel current effect, is employed to determine the presence or absence of the atomic particles on the surface of the carrier and produce an electrical signal representative of the pattern of recorded information on the recording medium. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference is first made to the attributes of the record medium comprising this invention.
In FIG.
1, there is shown a representative example of such a medium.
The medium 10 comprises a support 12 in form of a substrate, e.
g.
, glass or plastic.
A thin metal layer 14 is deposited on the surface of support 12.
Layer 14 may be deposited by vacuum deposition or sputtering and may comprise, for example, aluminum, copper, nickel or the like.
An electrically conductive layer 16 of an adsorbent carrier, such as zinc oxide, ZnO, is deposited on the conductive layer 14.
The thickness of the adsorbent carrier 16 is not particularly critical.
For example, it may be 1 mm or less, as long as the carrier surface is sufficiently smooth.
The adsorbent carrier 16 may be deposited by means of sputtering to obtain a layer with high uniformity and very smooth surface properties.
It is preferred that layer 16 be in the form of a single crystal whose surface is free of defects and consists of a single crystal plane of the material with constant work function.
On the surface of ZnO adsorbent carrier 16, there is deposited an atomic coat 18 comprising a monolayer of adsorbate atomic particles that have an adsorption affinity or adhesion relative to the adsorbent carrier.
One species of adsorbate atomic particles is oxygen in the case of a ZnO adsorbent carrier.
As is known in the art of ZnO as image receptor, oxygen atoms or ions attracted to the surface of ZnO are held by the adsorption phenomena.
ZnO has a natural negative charge.
Upon reaching to the surface, the oxygen atoms will attract an electron from the ZnO and remain in adsorbtive adherence with the ZnO surface.
One class of media comprising this invention may consist of an adsorbent carrier upon which, in one embodiment, may be coated with a substantially uniform adsorbate atomic layer held to the absorbent surface due to electrical charge attraction.
The adsorbent carrier may have electrically conductive, semiconductive, or low conductive properties
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Quantum Computing 
