TY - JOUR A1 - Kneipp, Janina A1 - Li, X. A1 - Sherwood, M. A1 - Panne, Ulrich A1 - Kneipp, H. A1 - Stockman, M.I. A1 - Kneipp, K. T1 - Gold Nanolenses Generated by Laser Ablation-Efficient Enhancing Structure for Surface Enhanced Raman Scattering Analytics and Sensing T2 - Analytical chemistry N2 - Nanoaggregates formed by metal spheres of different radii and interparticle distances represent finite, deterministic, self-similar systems that efficiently concentrate optical fields and act as “nanolenses”. Here we verify experimentally the theoretical concept of nanolenses and explore their potential as enhancing nanostructures in surface enhanced Raman scattering (SERS). Self-similar structures formed by gold nanospheres of different sizes are generated by laser ablation from solid gold into water. These nanolenses exhibit SERS enhancement factors on the order of 109. The “chemically clean” preparation process provides several advantages over chemically prepared nanoaggregates and makes the stable and biocompatible gold nanolenses potent enhancing structures for various analytical and sensing applications. PB - American Chemical Society CY - Washington, DC KW - SERS KW - Ablation KW - Gold-Nanopartikel PY - 2008 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/18231 AN - OPUS4-18231 SN - 0003-2700 SN - 1520-6882 VL - 80 IS - 11 SP - 4247 EP - 4251 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany