PlasCode - Plasmonic Coding in Smart Mesoscopic Particles for Dynamic Detection in Fluid Flows

目前，多功能微容器和微粒子的应用日益广泛。对于大多数应用来说，对这种颗粒进行可靠的标记以进行跟踪和识别是必不可少的。颗粒标记的稳健集成在可靠和高效的颗粒生成中尤为重要。“塑料编码”项目通过将二维基本(薄膜)结构折叠成三维物体(多面体)来创新地生成微粒，并通过光学可读等离子结构对微粒进行标记(编码)。折叠薄膜(折纸)的基本方法是基于液体的毛细作用力。利用纳米压印光刻技术在薄膜上形成等离子体结构。在模拟方法和项目框架内的生产中对微粒进行等离子体编码优化后，在演示系统的恒定流体流中对微粒进行动态检测。该项目的概念允许随后将编码颗粒微型化到更低微米范围内的尺寸。

Multifunctional micro containers and micro particles find an increasingly wide range of applications nowadays. Reliable labeling of such particles for their tracking and recognition is imperative for most applications. The robust integration of the particle labelling in a reliable and efficient particle generation is particularly important. The project "PlasCode" combines the innovative generation of micro particles by folding of two-dimensional basic (thin film) structures into three-dimensional objects (polyhedra) with the labelling (coding) of the particles by optically readable plasmonic structures. The underlying method for folding (origami) of thin films is based on the capillary forces of liquids. Nanoimprint lithography is used to create the plasmonic structures on the thin films. After the micro particles have been optimized in terms of plasmonic coding both in a simulative approach and in their production within the framework of the project, the particles are dynamically detected in the constant fluidic flow of a demonstrator system. The project concept allows a consequent miniaturization of the coded particles down to dimensions in the lower micrometer range.