Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA.
Department of Physics and Astronomy, Brigham Young University, Provo, UT 84602, USA.
Molecules. 2020 Oct 20;25(20):4817. doi: 10.3390/molecules25204817.
Self-assembly nanofabrication is increasingly appealing in complex nanostructures, as it requires fewer materials and has potential to reduce feature sizes. The use of DNA to control nanoscale and microscale features is promising but not fully developed. In this work, we study self-assembled DNA nanotubes to fabricate gold nanowires for use as interconnects in future nanoelectronic devices. We evaluate two approaches for seeding, gold and palladium, both using gold electroless plating to connect the seeds. These gold nanowires are characterized electrically utilizing electron beam induced deposition of tungsten and four-point probe techniques. Measured resistivity values for 15 successfully studied wires are between 9.3 × 10 and 1.2 × 10 Ωm. Our work yields new insights into reproducible formation and characterization of metal nanowires on DNA nanotubes, making them promising templates for future nanowires in complex electronic circuitry.
自组装纳米制造在复杂的纳米结构中越来越受欢迎，因为它需要更少的材料，并有潜力减小特征尺寸。使用 DNA 来控制纳米级和微尺度特征具有很大的前景，但尚未完全开发。在这项工作中，我们研究了自组装 DNA 纳米管，以制造金纳米线，用作未来纳米电子设备中的互连。我们评估了两种种子的方法，金和钯，都使用无电电镀金来连接种子。这些金纳米线通过电子束诱导沉积钨和四点探针技术进行电特性表征。对 15 根成功研究的线材进行了测量，其电阻率值在 9.3×10 和 1.2×10 Ωm 之间。我们的工作为在 DNA 纳米管上可重复形成和表征金属纳米线提供了新的见解，使它们成为复杂电子电路中未来纳米线的有前途的模板。
