Noble metal nanostructures of Au, Ag and Cu were prepared on two types of carbon-modified W(110) surfaces—R(15 × 12) and R(15 × 3)—and investigated by means of scanning tunneling microscopy. For all deposited metals qualitatively the same behaviour is observed: On the R(15 × 12)-template always isotropic clusters are formed. In contrast, on the R(15 × 3)-substrate the anisotropy of the nanostructures can be tuned from clusters at low temperatures via thin nanowires to thicker nanobars at high deposition temperatures. At intermediate temperatures on the R(15 × 3) the anisotropic Au nanowires arrange themselves into straight lines along domain boundaries induced by deposition of the Au metal. Similarities and differences to Au nanostructures as recently reported by Varykhalov et al. [A. Varykhalov, O. Rader, W. Gudat. Physical Review B 77, 035412 (2008).] are discussed.

中文翻译：

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渗碳 W(110) 上的贵金属纳米结构

在两种碳修饰的 W(110) 表面——R(15×12) 和 R(15×3) 上制备了 Au、Ag 和 Cu 的贵金属纳米结构，并通过扫描隧道显微镜进行了研究。对于所有沉积金属，观察到相同的性质：在 R(15 × 12)-模板上总是形成各向同性的簇。相比之下，在 R(15 × 3) 衬底上，纳米结构的各向异性可以从低温下的簇通过细纳米线调整到高沉积温度下的较厚纳米棒。在 R(15 × 3) 的中间温度下，各向异性 Au 纳米线沿由 Au 金属沉积引起的畴边界排列成直线。Varykhalov 等人最近报道的与 Au 纳米结构的异同。[一种。Varykhalov、O. Rader、W. Gudat。物理评论 B 77，