Nanooptic with Plasmons – Noble metal and Semiconductor Nanoparticles for Optical Devices

of Presentation Presentation Title: Nanooptic with Plasmons – Noble metal and Semiconductor Nanoparticles for Optical Devices Abstract : We produce size and shape controlled metal, semiconducting and hybrid nanocrystals by wet chemical synthesis, 2 especially in microfluidic continuous flow. Understanding We produce size and shape controlled metal, semiconducting and hybrid nanocrystals by wet chemical synthesis, 2 especially in microfluidic continuous flow. Understanding their crystallization and the resulting properties is a large part of our research and somerecent results are presented. 5 The main direction of our effort is to create nanoparticlesfor optical applications, specifically for single molecule microscopy. We have developednovel single particle scattering spectroscopytechniques, 7 which allow using plasmonicparticles as label in biological environments.We present examples using plasmonic particlesas sensor for nanoscopic orientation, localviscosity, binding events 11 and atomicdistance changes. References1. 'Separation of Nanoparticles by Gel Electrophoresis According to Size and Shape',Nano Lett. 7, 2881 (2007).2. 'Growth of Gold Tips onto Hyperbranched Cdte Nanostructures',Adv. Mater. 20, 588 (2007).3. 'Microfluidic Continuous Flow Synthesis of Rod-Shaped Gold and Silver Nanocrystals',Phys. Chem. Chem. Phys. 8, 3824 (2006).4. 'Enhanced Thermal Stability of Gold and Silver Nanorods through Thin Surface Layers',J. Phys. Chem. C. 111, 12886 (2007).5. 'Plasmonic Focusing Reduces Ensemble Linewidth of Silver Coated Gold Nanorods',Nano Lett. 8, 1719 (2008).6. 'Gold Nanoparticle Growth Monitored in Situ Using a Novel Fast Optical Single-ParticleSpectroscopy Method', Nano Lett. 7, 1664 (2007).7. 'Mapping the Polarization Pattern of Plasmon Modes Reveals Nano-Particle Symmetry',Nano Lett. ASAP July 2008, DOI 10.1021/nl801179a (2008).8. 'Gold Nanorods as Novel Nonbleaching Plasmon-Based Orientation Sensors for PolarizedSingle-Particle Microscopy',Nano Letters 5, 301 (2005).9. 'Rotational Dynamics of Laterally Frozen Nanoparticles Specifically Attached to Biomembranes',submitted (2008).10. 'Biomolecular Recognition Based on Single Gold Nanoparticle Light Scattering',Nano Letters 3, 935 (2003).11. 'Protein-Membrane Interaction Probed by Single Plasmonic Nanoparticles',Nano Lett. 8, 1724 (2008).12. 'A Molecular Ruler Based on Plasmon Coupling of Single Gold and Silver Nanoparticles',Nature Biotechnology 23, 741 (2005).