Highly conductive and pure gold nanostructures grown by electron beam induced deposition.
Highly conductive and pure gold nanostructures grown by electron beam induced deposition.
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DOI：
10.1038/srep34003
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发表时间：
2016-09-26
影响因子：
4.6
通讯作者：
Bertagnolli E
中科院分区：
文献类型：
--
作者：
Shawrav MM;Taus P;Wanzenboeck HD;Schinnerl M;Stöger-Pollach M;Schwarz S;Steiger-Thirsfeld A;Bertagnolli E
这项工作介绍了一种添加剂直接写入纳米纤维技术，用于从商业金属有机前驱体生产极其导电的金纳米结构。91原子%的金含量（at. %）是通过在直写沉积期间使用水作为氧化增强剂来实现的。基于沉积速率和化学成分建立了一个模型，并解释了导致金纯度和沉积产率增加的表面过程。氧化增强剂的共注入使得聚焦电子束诱导沉积（FEBID）-用于三维（3D）纳米结构的无掩模、无抗蚀剂沉积方法-能够在单个工艺步骤中直接产生纯金，而无需沉积后纯化。金纳米线显示出低至8.8 μΩ cm的电阻率。这是迄今为止FEBID实现的最高电导率，它开辟了纳米电子学应用的可能性，例如直接写入纳米材料的接触。增加的金沉积产率和超低碳水平将促进未来的应用，例如在纳米等离子体和生物分子固定中制造3D纳米结构。
This work introduces an additive direct-write nanofabrication technique for producing extremely conductive gold nanostructures from a commercial metalorganic precursor. Gold content of 91 atomic % (at. %) was achieved by using water as an oxidative enhancer during direct-write deposition. A model was developed based on the deposition rate and the chemical composition, and it explains the surface processes that lead to the increases in gold purity and deposition yield. Co-injection of an oxidative enhancer enabled Focused Electron Beam Induced Deposition (FEBID)—a maskless, resistless deposition method for three dimensional (3D) nanostructures—to directly yield pure gold in a single process step, without post-deposition purification. Gold nanowires displayed resistivity down to 8.8 μΩ cm. This is the highest conductivity achieved so far from FEBID and it opens the possibility of applications in nanoelectronics, such as direct-write contacts to nanomaterials. The increased gold deposition yield and the ultralow carbon level will facilitate future applications such as the fabrication of 3D nanostructures in nanoplasmonics and biomolecule immobilization.
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影响因子：
3.4
作者：
Fernandez-Pacheco, A.;De Teresa, J. M.;Ibarra, M. R.
通讯作者：
Ibarra, M. R.
影响因子：
3.5
作者：
Fowlkes, J. D.;Doktycz, M. J.;Rack, P. D.
通讯作者：
Rack, P. D.
DOI：
10.1007/s00339-014-8617-7
发表时间：
2014-12-01
影响因子：
2.7
作者：
De Teresa, J. M.;Fernandez-Pacheco, A.
通讯作者：
Fernandez-Pacheco, A.
影响因子：
7
作者：
Gong, Chen;Leite, Marina S.
通讯作者：
Leite, Marina S.
影响因子：
1.4
作者：
KOOPS, HWP;WEIEL, R;BAUM, TH
通讯作者：
BAUM, TH