Optical nanomanipulation on solid substrates via optothermally-gated photon nudging
Optical nanomanipulation on solid substrates via optothermally-gated photon nudging
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DOI：
10.1038/s41467-019-13676-3
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发表时间：
2019-12-12
影响因子：
16.6
通讯作者：
Zheng, Yuebing
中科院分区：
文献类型：
--
作者：
Li, Jingang;Liu, Yaoran;Zheng, Yuebing
将胶体粒子构建成功能性纳米结构、材料和器件是一个很有前途但又具有挑战性的方向。已经开发了许多光学技术来捕获、操纵、组装和打印来自水溶液的胶体颗粒，使其在固体基底上形成所需的构型。然而，在液体环境中操作的这些技术通常遭受图案塌陷、布朗运动和可重构组装带来的挑战。在这里，我们开发了一种全光学技术，称为光热门控光子轻推（OPN），用于在纳米级精度的固体基底上的各种胶体颗粒的通用操作和动态图案化。OPN利用薄的表面活性剂层来光热调制颗粒-基底相互作用，这使得能够利用光学散射力操纵固体基底上的胶体颗粒。沿着原位光谱学，我们的非侵入性和非接触式纳米操纵技术将在纳米纤维，纳米光子学，纳米电子学和胶体科学中找到各种应用。
Constructing colloidal particles into functional nanostructures, materials, and devices is a promising yet challenging direction. Many optical techniques have been developed to trap, manipulate, assemble, and print colloidal particles from aqueous solutions into desired configurations on solid substrates. However, these techniques operated in liquid environments generally suffer from pattern collapses, Brownian motion, and challenges that come with reconfigurable assembly. Here, we develop an all-optical technique, termed optothermally-gated photon nudging (OPN), for the versatile manipulation and dynamic patterning of a variety of colloidal particles on a solid substrate at nanoscale accuracy. OPN takes advantage of a thin surfactant layer to optothermally modulate the particle-substrate interaction, which enables the manipulation of colloidal particles on solid substrates with optical scattering force. Along with in situ optical spectroscopy, our non-invasive and contactless nanomanipulation technique will find various applications in nanofabrication, nanophotonics, nanoelectronics, and colloidal sciences.