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This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 10 December 2010, is one of a series of advanced technology reports produced in FY 2010 under the Advanced Aerospace Weapon System Applications (AAWSA) Program. It reviews quantum computing technologies and DNA-based molecular computing for onboard supercomputing on future spacecraft. It forecasts ion-trap quantum computers within 10 years, simple DNA tile computing within 20 years, and self-repairing DNA computers on a 40-year horizon.
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UNCLASSIFIED/ /F811. 8Ffllil,t,b l!l!i! &,lb¥ the complementary binding of the Watson-Crick base pairs that correspond to each sticky end. In this way, a lattice structure can be built upon the base structure by synthesizing additional DX motifs to construct what is known as a "DNA tile." These tiles can be further utilized as a scaffold for additional molecular structures. In order to envision the aTAM tiling process, it is easy to picture various tiles with different numbers written on the sides, indicating matching rules where two tiles would stick only if their contacts matched. Additional matching interactions can be arranged in a manner that adjacent tiles can strongly hold the next one in place, but a single interaction creates a weak bond. Figure 12 illustrates an instantiation of the algorithmic self assembly process, in which sets of four species tiles that represents XOR (exclusive OR) function to create a Sierpinski triangle pattern. The so called seed structure is used to input the initial values that commence the algorithmic self assembly process. However, it must be noted that random nucleation events may occur. Nevertheless, algorithmic self-assembly has created a means to emulate cellular automata. 27 A I = 1 I= I I = 0 I I I I I I B CJ X I y C !IC'""'"""""":)l Oc------"_:1 l~l I~ -~· a..._____s ,l...:.:'.'.:..s ~. 0 0 I l'i/ 11 1__!~; □- E- Figure 12. (top a-e) The XOR Cellular Automaton and Its Implementation by Tile-Based Self-Assembly. (bottom a-e) AFM Images of Algorithmic Self-assembly of Sierpinski Triangle Crystals. UNCLASSIFIED/ /F81t 8FFU!IJIIL 1!19! 8HL I
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 54 pages are in the text index: search them above, or from the library's search.