Fabricated nanogap-rich plasmonic nanostructures through an optothermal surface bubble in a droplet
Fabricated nanogap-rich plasmonic nanostructures through an optothermal surface bubble in a droplet
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DOI：
10.1364/ol.43.000334
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发表时间：
2018-01-15
期刊：
影响因子：
3.6
通讯作者：
Zhao, Chenglong
中科院分区：
文献类型：
--
作者：
Karim, Farzia;Vasquez, Erick S.;Zhao, Chenglong
本文展示了一种快速且经济有效的制备富纳米间隙结构的方法。该方法利用了体积为纳升的液滴内光热表面气泡周围的马兰戈尼对流。含有金属纳米颗粒的液滴减少了样品消耗并限制了液体流动。光热表面气泡产生强烈的对流流，允许金属纳米颗粒在环境条件下快速沉积，在任何衬底上形成富含纳米间隙的结构。这种方法将使生物传感、环境分析和非线性光学等广泛的应用成为可能。(c) 2018年美国光学学会
A rapid and cost-effective method for the fabrication of nanogap-rich structures is demonstrated in this Letter. The method utilizes the Marangoni convection around an optothermal surface bubble inside a liquid droplet with a nanoliter volume. The liquid droplet containing metallic nanoparticles reduces the sample consumption and confines the liquid flow. The optothermal surface bubble creates a strong convective flow that allows for the rapid deposition of the metallic nanoparticles to form nanogap-rich structures on any substrate under ambient conditions. This method will enable a broad range of applications such as biosensing, environmental analysis, and nonlinear optics. (c) 2018 Optical Society of America