Controlled fabrication of metallic nanostructures plays a central role in much of modern science and technology, because changing the dimensions of a nanocrystal enables tailoring of its mechanical, electronic, optical, catalytic and antibacterial properties. Here we show direct superplastic nanoimprinting (SPNI) of crystalline metals well below their melting temperatures, generating ordered nanowire arrays with aspect ratios up to ∼2,000 and imprinting features as small as 8 nm. Surface-enhanced Raman scattering (SERS) spectra reveal strongly enhanced electromagnetic signals from the prepared nanorod arrays with sizes up to ∼100 nm, which indicates that our technique can provide an ideal way to fabricate robust SERS substrates. SPNI, as a one-step, controlled and reproducible nanofabrication method, could facilitate the applications of metal nanostructures in bio-sensing, diagnostic imaging, catalysis, food industry and environmental conservation.

中文翻译：

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在低于熔点的温度下通过直接纳米压印一步一步制造晶体金属纳米结构。

在许多现代科学和技术中，金属纳米结构的受控制造起着至关重要的作用，因为改变纳米晶体的尺寸可以调整其机械，电子，光学，催化和抗菌性能。在这里，我们显示出结晶金属的直接超塑性纳米压印（SPNI），其熔点温度远低于其熔融温度，可生成有序纳米线阵列，其长宽比高达2,000左右，压印特征小至8 nm。表面增强拉曼散射（SERS）光谱揭示了来自制备的纳米棒阵列的电磁信号，其信号增强到100nm，这表明我们的技术可以为制造坚固的SERS基底提供理想的方法。SPNI作为一种可控制且可重复的纳米制造方法，