发明名称 |
Method for preparing digital storage device by laser application |
摘要 |
A digital storage device comprises a crystalline substrate such as silicon in which pockets of amorphous substrate material represent one of the binary logic states; the absence of amorphous material represents the other logic state. The amorphous material is formed by irradiation with a laser beam. Typically the radiation for silicon is at 347 nanometers, 2.5 nanosecond pulse length. The power density varies with crystalline orientation; for (001) silicon it is typically 0.3 J/cm2 and for (111) silicon it is 0.3 to 0.6 J/cm2. Erasure of the information is achieved by laser annealing the amorphous material back to its crystalline form. |
申请公布号 |
US4556524(A) |
申请公布日期 |
1985.12.03 |
申请号 |
US19820430382 |
申请日期 |
1982.09.30 |
申请人 |
THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND |
发明人 |
CULLIS, ANTHONY G.;WEBBER, HUGH C.;CHEW, NIGEL G. |
分类号 |
G11B7/0045;G11B7/013;G11B7/24;(IPC1-7):B05D3/06 |
主分类号 |
G11B7/0045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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