Laser-induced transfer technology for controlled fabrication of nanoparticles and 3D metamaterials

在本项目中，提出了一种新的制造微结构的技术，该微结构包含金属和介电纳米颗粒作为基本构建块。这项技术是基于飞秒激光诱导金属和介电粒子转移(LIT)和双光子聚合(2PP)技术的组合。利用本课题组最近演示的LIT方法，可以实现高质量球形金属微米和纳米颗粒的可控制备，最小尺寸小于200 nm，最大尺寸大于1μm。这些颗粒可以沉积在不同的衬底上，并形成任意的2D和3D聚合物微结构。与双光子聚合技术相结合，LIT方法为制造包含金属和介电纳米颗粒作为基本构建块的微结构和纳米结构提供了独特的可能性。对本项目中提出的制作结构的实验和理论研究将有助于实现新型的2D和3D超材料和纳米光子组件。这项新技术还可以在微流体、传感器、光伏和生物医学中找到有趣的应用。

In the present project, the development of a novel technology for the fabrication of microstructures containing metal and dielectric nanoparticles as elementary building blocks is proposed. This technology is based on a combination of femtosecond laser-induced transfer (LIT) of metallic and dielectric particles and two-photon polymerization (2PP) techniques. The controllable fabrication of high quality spherical metal micro- and nanoparticles with a minimum size below 200 nm and a maximum size above 1 μm can be realized using the LIT approach recently demonstrated in our group. These particles can be deposited onto different substrates and into arbitrary 2D and 3D polymeric microstructures. In combination with the two-photon polymerization technique the LIT approach provides unique possibilities for the fabrication of micro- and nanostructures containing metal and dielectric nanoparticles as elementary building blocks. Experimental and theoretical study of the fabricated structures proposed in this project will allow realization of novel 2D and 3D metamaterials and nanophotonic components. This new technology can also find interesting applications in microfluidics, sensors, photovoltaics, and biomedicine.