期刊
APPLIED PHYSICS LETTERS
卷 99, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3610490
关键词
-
资金
- European Research Council
Archival data storage is predominantly based on magnetic tape technology. An alternative probe based multi-level recording scheme is proposed which specifically addresses the issue of long term data preservation. In a first step, the data are written as topographic relief in an organic resist. To achieve long term preservation, the relief structure is transferred in a Si based inorganic carrier by means of reactive ion etching. Thereby, the data are preserved as written in stone. Using 3-level logic, a storage density of 99 Gb/in(2) is demonstrated and read-back of the data is accomplished with an error rate of 10(-3) based on threshold detection. Exploiting etch anisotropy in layered substrates, logic levels can be physically separated from one another in different layers which enhances tamper resistance and also provides a means for heterogeneous storage concepts. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3610490]
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