NIRT:Chemically Directed Surface Alignment and Wiring of Self-Assembled Nanoelectrical Circuits

NIRT：自组装纳米电路的化学定向表面对准和布线

• 批准号: 0708347
• 负责人: John Harb
• 金额: --
• 依托单位: Brigham Young University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0708347&HistoricalAwards=false
• 关键词: NIRT; Chemically; Directed; Surface; Alignment

0708347John N. HarbThis proposal was received in response to the Active Nanostructures and Nanosystems initiative, NSF 06-595, category NIRT. An alternative to top-down fabrication of electrical circuits is to use self-assembly of molecules to form the smallest circuit structures, and combine these molecular circuits with interconnections fabricated by top-down techniques. The dimensions of molecules and molecular templates are such that devices with exceptionally narrow linewidths are possible. In addition, self-assembly is inherently parallel, making it amenable to high-throughput fabrication at reasonable cost. This project seeks to combine the complementary advantages of bottom-up self-assembly with top-down patterning, with the goal of developing a process for fabrication of nanoelectronic circuits.To accomplish this objective, an interdisciplinary research group, ASCENT (ASsembled nanoCircuit Elements by Nucleic acid Templating), has been formed at BYU. Efforts are focused on the development and refinement of four key technologies: (1) solution-phase molecular circuit assembly, (2) high-resolution chemical surface patterning, (3) high-resolution metallization of molecular templates, and (4) chemically directed assembly and integration of molecular circuits on surfaces. Molecular circuits will be self-assembled in solution using customized DNA templates ("test-tube circuits"). DNA self-assembly is particularly powerful because of the large number of possible nucleic-acid sequences that enable highly selective bonding of DNA strands to each other and to other molecules. Chemomechanical patterning, a method that we have developed, will be used to chemically modify the SiO2 substrate. This chemical patterning will provide anchor points to attach and align the molecular circuits on the surface, as well as provide a means for local wiring to the anchored circuit, all with a resolution 10 nm. Electroless metal plating of both the exposed DNA and chemically templated lines will then electrically connect active circuit elements to each other and to the larger-scale architecture. The net result will be DNA-templated molecular circuits that have been aligned and wired locally on an oxide surface. Interconnect technology similar to that used currently in the semiconductor industry can then be applied to create the larger global wiring needed for practical devices based on the proposed molecular circuits.Broader impacts including a strong emphasis on undergraduate research, an outreach program to the local Hispanic community and others, and a multidisciplinary environment for graduate education. The potential societal impact of the technology is that it may provide an innovative solution to the semiconductor industry's need for greater resolution, and it does so using technologies that evolve naturally from and connect well to current microfabrication processes.

0708347John N. Harb此提案是为了响应活性纳米结构和纳米系统倡议（NSF 06-595，类别 NIRT）而收到的。 自上而下制造电路的另一种方法是使用分子自组装来形成最小的电路结构，并将这些分子电路与通过自上而下技术制造的互连相结合。 分子和分子模板的尺寸使得具有极窄线宽的器件成为可能。 此外，自组装本质上是并行的，使其能够以合理的成本进行高通量制造。 该项目旨在将自下而上的自组装与自上而下的图案化的互补优势结合起来，目标是开发纳米电子电路的制造工艺。为了实现这一目标，杨百翰大学成立了一个跨学科研究小组ASCENT（通过核酸模板组装纳米电路元件）。 工作重点是四项关键技术的开发和完善：（1）溶液相分子电路组装，（2）高分辨率化学表面图案化，（3）分子模板的高分辨率金属化，以及（4）表面上分子电路的化学定向组装和集成。 分子电路将使用定制的 DNA 模板在溶液中自组装（“试管电路”）。 DNA自组装特别强大，因为大量可能的核酸序列能够使DNA链彼此以及与其他分子高度选择性地结合。 我们开发的化学机械图案化方法将用于对 SiO2 基板进行化学改性。 这种化学图案化将提供锚点来附着和排列表面上的分子电路，并提供一种用于锚定电路局部布线的方法，所有这些都具有 10 nm 的分辨率。 然后，对暴露的 DNA 和化学模板线进行化学镀金属，将有源电路元件相互电连接并连接到更大规模的架构。 最终结果将是在氧化物表面上局部排列和连接的 DNA 模板分子电路。 然后，可以应用类似于半导体行业当前使用的互连技术来创建基于所提议的分子电路的实际设备所需的更大的全球布线。更广泛的影响包括对本科生研究的高度重视、对当地西班牙裔社区和其他人的推广计划以及研究生教育的多学科环境。 该技术的潜在社会影响在于，它可以为半导体行业对更高分辨率的需求提供创新的解决方案，并且它使用从当前微加工工艺自然发展并与其良好连接的技术来实现这一点。