Lu Zhaolin, Murakowski Janusz, Schuetz Christopher A, Shi Shouyuan, Schneider Garrett J, Samluk Jesse P, Prather Dennis W
Opt Express. 2006 Mar 20;14(6):2228-35. doi: 10.1364/oe.14.002228.
In this work, we present for the first time a new and realistic application of the "perfect lens", namely, electromagnetic traps (or tweezers). We combined two recently developed techniques, 3D negative refraction flat lenses (3DNRFLs) and optical tweezers, and experimentally demonstrated the very unique advantages of using 3DNRFLs for electromagnetic traps. Super-resolution and short focal distance of the flat lens result in a highly focused and strongly convergent beam, which is a key requirement for a stable and accurate electromagnetic trap. The translation symmetry of 3DNRFL provides translation-invariance for imaging, which allows an electromagnetic trap to be translated without moving the lens, and permits a trap array by using multiple sources with a single lens. Electromagnetic trapping was demonstrated using polystyrene particles in suspension, and subsequent to being trapped to a single point, they were then accurately manipulated over a large distance by simple movement of a 3DNRFL-imaged microwave monopole source.
在这项工作中，我们首次展示了“完美透镜”的一种全新且实际的应用，即电磁阱（或镊子）。我们将两项最近开发的技术——三维负折射平板透镜（3DNRFLs）和光镊相结合，并通过实验证明了使用3DNRFLs进行电磁阱操作的独特优势。平板透镜的超分辨率和短焦距可产生高度聚焦且强会聚的光束，这是稳定且精确的电磁阱的关键要求。3DNRFL的平移对称性为成像提供了平移不变性，这使得电磁阱在不移动透镜的情况下能够平移，并允许使用单个透镜通过多个源形成阱阵列。我们利用悬浮液中的聚苯乙烯颗粒展示了电磁捕获，在将它们捕获到单个点之后，通过简单移动3DNRFL成像的微波单极源，能够在远距离上对其进行精确操控。
