EMT/NANO: Integration of DNA nanotechnology with nanoelectronics

EMT/NANO：DNA 纳米技术与纳米电子学的集成

• 批准号: 0829951
• 负责人: Paul W.K. Rothemund
• 金额: --
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0829951&HistoricalAwards=false
• 关键词: EMT; NANO; Integration; DNA; nanotechnology

DNA is well-known for its role in biology as the genetic material. In recent years, however, DNA has begun to be used as a material for creating technology. In particular, DNA can be used to make complex nanometer-scale patterns which, in turn, can be used as templates to arrange nanometer-scale devices. For example, DNA patterns might be used to organize nanowires and nanoswitches to create computer circuits much smaller, cheaper, and faster than current semiconductor computer chips.Recently the investigators invented a method called DNA origami, whereby a long DNA strand is folded into any desired pattern. The method is powerful but has limitations: current DNA origami only contain 200 pixels, which means they can organize at most 200 different devices---not enough to create a complex circuit. In practice it takes 10-20 pixels to align a single carbon nanotube wire on DNA origami, so the most complex device created using DNA origami is a field effect transistor composed of two crossed carbon nanotube wires. Another difficulty is that DNA origami are made in solution, but must be used on surfaces like silicon. Transferring DNA origami to silicon currently results in random placement and orientation, but to build circuits DNA origami must positioned accurately.The investigators are interested in overcoming these limitations. They are working on: (1) combining DNA origami into larger patterns with larger numbers of pixels by treating DNA origami as puzzle pieces that fit together based on "stacking interactins", (2) precisely placing and orienting DNA origami on lithographically-defined sticky patches on silicon, and (3) using DNA origami to organize multiple carbon nanotubes to create more complex circuits, such as NAND logic gates.

DNA以其在生物学中作为遗传物质的作用而闻名。但是，近年来，DNA已开始用作创造技术的材料。特别是，DNA可用于制造复杂的纳米尺度图案，而纳米尺度图案又可以用作模板来安排纳米尺度设备。例如，DNA模式可用于组织纳米线和纳米开关，以创建比当前半导体计算机芯片更小，更便宜和更快的计算机电路。研究人员发明了一种称为DNA折纸的方法，从而将长的DNA链折叠成任何所需的模式。 该方法功能强大，但具有局限性：当前的DNA折纸仅包含200个像素，这意味着它们可以在最多有200个不同的设备组织 - 不足以创建复杂的电路。实际上，在DNA折纸上对齐单个碳纳米管线需要10-20像素，因此使用DNA折纸创建的最复杂的设备是由两条交叉碳纳米管线组成的野外效应晶体管。另一个困难是DNA折纸是在溶液中制成的，但必须在硅等表面上使用。将DNA折纸转移到硅当前会导致随机放置和方向，但是要构建电路，必须准确地定位DNA折纸。研究人员有兴趣克服这些局限性。 They are working on: (1) combining DNA origami into larger patterns with larger numbers of pixels by treating DNA origami as puzzle pieces that fit together based on "stacking interactins", (2) precisely placing and orienting DNA origami on lithographically-defined sticky patches on silicon, and (3) using DNA origami to organize multiple carbon nanotubes to create more complex circuits, such as NAND逻辑门。