Fabrication of capillary-force-induced DNA-templated Ag wires assisted by enzymatic etching
Fabrication of capillary-force-induced DNA-templated Ag wires assisted by enzymatic etching
复制标题
酶蚀刻辅助毛细管力诱导 DNA 模板银线的制造
DOI：
10.7567/apex.8.027002
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发表时间：
2015
影响因子：
2.3
通讯作者：
A. Fisher
中科院分区：
文献类型：
--
作者：
V. Periasamy;G. P. M. K. Ciniciato;K. Yunus;A. Fisher
我们报道了一种利用自然毛细力在硅晶片上制备微米到纳米级银线的新方法。由毛细力推动的咖啡环干燥效应允许载银DNA分子向划线区域的边缘扩散，导致沿着划线图案沉积。随后通过酶辅助蚀刻去除DNA支架，在晶片上留下Ag线。这种技术有望改善目前DNA辅助形成的金属纳米粒子和纳米结构，在纳米电子学中有潜在的应用。
We report a novel scribing or “writing” method for fabricating micro- to nanoscale silver (Ag) wires on a silicon (Si) wafer using natural capillary force. The coffee-ring drying effect fueled by the capillary force allows the diffusion of Ag-loaded DNA molecules towards the edge of the scribing region, resulting in deposition along the scribed patterns. This is followed by the removal of DNA scaffolding by enzyme-assisted etching, leaving behind the Ag wire on the wafer. This technique is expected to improve the current DNA-assisted formation of metallic nanopatterns and nanostructures towards potential applications in nanoelectronics.