Journal ArticleDOI
Electrically controlled light scattering with single metal nanoparticles
J. G. Müller,Carsten Sönnichsen,H. von Poschinger,G. von Plessen,Thomas A. Klar,Jochen Feldmann +5 more
TLDR
In this paper, a concept to electrically control the scattering of light is introduced, which is to embed noble metal nanoparticles in an electro-optical material such as a liquid crystal in order to induce a spectral shift of the particle plasmon resonance by applying an electric field.Abstract:
A concept to electrically control the scattering of light is introduced. The idea is to embed noble metal nanoparticles in an electro-optical material such as a liquid crystal in order to induce a spectral shift of the particle plasmon resonance by applying an electric field. Light scattering experiments on single gold nanoparticles show that spherically shaped nanoparticles become optically spheroidal when covered by an anisotropic liquid crystal. The two particle plasmon resonances of the optically spheroidal gold nanoparticles can be spectrally shifted by up to 50 meV when electric fields of more than 10 kV/cm are applied.read more
Citations
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Journal ArticleDOI
Templated Techniques for the Synthesis and Assembly of Plasmonic Nanostructures
Journal ArticleDOI
A plasmonic Fano switch.
Wei-Shun Chang,J. Britt Lassiter,Pattanawit Swanglap,Heidar Sobhani,Saumyakanti Khatua,Peter Nordlander,Naomi J. Halas,Stephan Link +7 more
TL;DR: It is shown that clusters with a hemicircular central disk surrounded by a circular ring of closely spaced, coupled nanodisks yield Fano-like and non-Fano- like spectra for orthogonal incident polarization orientations.
Journal ArticleDOI
Nanoparticles in Liquid Crystals: Synthesis, Self-Assembly, Defect Formation and Potential Applications
TL;DR: A review of liquid crystal nanoscience can be found in this article, where a short overview of current research efforts in liquid crystal nano-nanoscience is given, including the synthesis of nanomaterials using LCs as templates, the design of liquid crystals (LCs) and self-assembly of LCs, defect formation in LC-nanoparticle suspensions and potential applications.
Journal ArticleDOI
Gold nanoshells improve single nanoparticle molecular sensors
Gunnar Raschke,S. Brogl,Andrei S. Susha,A. L. Rogach,Thomas A. Klar,Jochen Feldmann,B. Fieres,Nikolay Petkov,Thomas Bein,Alfons Nichtl,K. Kürzinger +10 more
TL;DR: In this article, the authors focus on the narrow homogeneous line width of only 180 meV and show that the particle plasmon resonance responds more sensitively to changes in the environment, the biological spectral window is accessible and the scattering spectra show sharper resonances.
Journal ArticleDOI
Plasmonic Au/Co/Au Nanosandwiches with Enhanced Magneto-optical Activity†
J. B. González-Díaz,Antonio García-Martín,José Miguel García-Martín,Alfonso Cebollada,Gaspar Armelles,Borja Sepúlveda,Yury Alaverdyan,Mikael Käll +7 more
TL;DR: This paper aims to demonstrate the efforts towards in-situ applicability of EMMARM, as to provide real-time information about concrete mechanical properties such as E-modulus and compressive strength.
References
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Journal ArticleDOI
Surface Plasmon Spectroscopy of Nanosized Metal Particles
TL;DR: In this paper, the use of optical measurements to monitor electrochemical changes on the surface of nanosized metal particles is discussed within the Drude model, and the absorption spectrum of a metal sol in water is shown to be strongly affected by cathodic or anodic polarization, chemisorption, metal adatom deposition, and alloying.
Journal ArticleDOI
Band-Edge Electroabsorption in Quantum Well Structures: The Quantum-Confined Stark Effect
David A. B. Miller,Daniel S. Chemla,T. C. Damen,Arthur C. Gossard,W. Wiegmann,Thomas H. Wood,Charles A. Burrus +6 more
TL;DR: In this article, the authors present theory and extended experimental results for the large shift in optical absorption in GaAs-AlGaAs quantum well structures with electric field perpendicular to the layers.
Journal ArticleDOI
Drastic reduction of plasmon damping in gold nanorods.
Carsten Sönnichsen,Thomas Franzl,T. Wilk,G. von Plessen,Jochen Feldmann,Orla M. Wilson,Paul Mulvaney +6 more
TL;DR: In this paper, the dephasing of particle plasmons was investigated using light-scattering spectroscopy on individual gold nanoparticles, and a drastic reduction of the plasmon de-phasing rate in nanorods as compared to small nanospheres due to a suppression of interband damping was found.
Journal ArticleDOI
Single-target molecule detection with nonbleaching multicolor optical immunolabels.
TL;DR: It is proposed that PRPs can replace or complement established labels, such as those based on radioactivity, fluorescence, chemiluminescence, or enzymatic/colorimetric detection that are used routinely in biochemistry, cell biology, and medical diagnostic applications.
Journal ArticleDOI
Surface-Plasmon Resonances in Single Metallic Nanoparticles
TL;DR: In this paper, the authors measured the homogeneous line shape of the surface-plasmon resonance in single gold nanoparticles and observed double-peaked line shapes caused by electromagnetic coupling between close-lying particles.