Search Results - "Grady, Nathaniel K."

Terahertz Metamaterials for Linear Polarization Conversion and Anomalous Refraction by Grady, Nathaniel K., Heyes, Jane E., Chowdhury, Dibakar Roy, Zeng, Yong, Reiten, Matthew T., Azad, Abul K., Taylor, Antoinette J., Dalvit, Diego A. R., Chen, Hou-Tong

“…Polarization is one of the basic properties of electromagnetic waves conveying valuable information in signal transmission and sensitive measurements…”
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Plexciton Dynamics: Exciton−Plasmon Coupling in a J-Aggregate−Au Nanoshell Complex Provides a Mechanism for Nonlinearity by Fofang, Nche T, Grady, Nathaniel K, Fan, Zhiyuan, Govorov, Alexander O, Halas, Naomi J

“…Coherently coupled plasmons and excitons give rise to new optical excitations- plexcitons − due to the strong coupling of these two oscillator systems…”
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Tailoring plasmonic substrates for surface enhanced spectroscopies by Lal, Surbhi, Grady, Nathaniel K, Kundu, Janardan, Levin, Carly S, Lassiter, J Britt, Halas, Naomi J

“…Our understanding of how the geometry of metallic nanostructures controls the properties of their surface plasmons, based on plasmon hybridization, is useful…”
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Electromigrated Nanoscale Gaps for Surface-Enhanced Raman Spectroscopy by Ward, Daniel R, Grady, Nathaniel K, Levin, Carly S, Halas, Naomi J, Wu, Yanpeng, Nordlander, Peter, Natelson, Douglas

“…Single-molecule detection with chemical specificity is a powerful and much desired tool for biology, chemistry, physics, and sensing technologies…”
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Surface-Enhanced Raman Scattering from Individual Au Nanoparticles and Nanoparticle Dimer Substrates by Talley, Chad E, Jackson, Joseph B, Oubre, Chris, Grady, Nathaniel K, Hollars, Christopher W, Lane, Stephen M, Huser, Thomas R, Nordlander, Peter, Halas, Naomi J

“…Surface-enhanced Raman scattering (SERS) intensities for individual Au nanospheres, nanoshells, and nanosphere and nanoshell dimers coated with nonresonant…”
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Cu Nanoshells:  Effects of Interband Transitions on the Nanoparticle Plasmon Resonance by Wang, Hui, Tam, Felicia, Grady, Nathaniel K, Halas, Naomi J

“…The optical properties of metals arise both from optical excitation of interband transitions and their collective electronic, or plasmon, response. Here, we…”
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Hybrid metasurface for ultra-broadband terahertz modulation by Heyes, Jane E., Withayachumnankul, Withawat, Grady, Nathaniel K., Chowdhury, Dibakar Roy, Azad, Abul K., Chen, Hou-Tong

“…We demonstrate an ultra-broadband free-space terahertz modulator based on a semiconductor-integrated metasurface. The modulator is made of a planar array of…”
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Nanoparticle-Induced Enhancement and Suppression of Photocurrent in a Silicon Photodiode by Sundararajan, Sri Priya, Grady, Nathaniel K, Mirin, Nikolay, Halas, Naomi J

“…Nanoparticles are capable of both enhancing and suppressing the photocurrent in a silicon diode when deposited on the active face of the device. Photocurrent…”
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Scattering Spectra of Single Gold Nanoshells by Nehl, Colleen L, Grady, Nathaniel K, Goodrich, Glenn P, Tam, Felicia, Halas, Naomi J, Hafner, Jason H

“…Single particle dark field spectroscopy has been combined with high-resolution scanning electron and atomic force microscopy to study the scattering spectra of…”
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Nonlinear high-temperature superconducting terahertz metamaterials by Grady, Nathaniel K, Perkins, Bradford G, Hwang, Harold Y, Brandt, Nathaniel C, Torchinsky, Darius, Singh, Ranjan, Yan, Li, Trugman, Daniel, Trugman, Stuart A, Jia, Q X, Taylor, Antoinette J, Nelson, Keith A, Chen, Hou-Tong

“…We report the observation of a nonlinear terahertz response of split-ring resonator arrays made of high-temperature superconducting films. Intensity-dependent…”
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Nanostructure-Mediated Launching and Detection of 2D Surface Plasmons by Day, Jared K, Neumann, Oara, Grady, Nathaniel K, Halas, Naomi J

“…Au nanoparticles deposited on a metallic film act as nanoantenna receivers and transmitters for the coupling of free-space radiation into, and out of, 2D…”
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Three-Dimensional Nanostructures as Highly Efficient Generators of Second Harmonic Light by Zhang, Yu, Grady, Nathaniel K, Ayala-Orozco, Ciceron, Halas, Naomi J

“…Plasmonic nanostructures enable the generation of large electromagnetic fields confined to small volumes, potentially providing a route for the development of…”
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Fluorescence Enhancement by Au Nanostructures: Nanoshells and Nanorods by Bardhan, Rizia, Grady, Nathaniel K, Cole, Joseph R, Joshi, Amit, Halas, Naomi J

“…Metallic nanoparticles influence the quantum yield and lifetime of adjacent fluorophores in a manner dependent on the properties of the nanostructure. Here we…”
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Metallic Nanoshells with Semiconductor Cores: Optical Characteristics Modified by Core Medium Properties by Bardhan, Rizia, Grady, Nathaniel K, Ali, Tamer, Halas, Naomi J

“…It is well-known that the geometry of a nanoshell controls the resonance frequencies of its plasmon modes; however, the properties of the core material also…”
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Nanoscale Control of Near-Infrared Fluorescence Enhancement Using Au Nanoshells by Bardhan, Rizia, Grady, Nathaniel K., Halas, Naomi J.

“…The fluorescence enhancement of Indocyanine Green (ICG) molecules as a function of distance from the surface of Au nanoshells (Au‐NS; see image) is examined. A…”
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Nanoparticle-Mediated Coupling of Light into a Nanowire by Knight, Mark W, Grady, Nathaniel K, Bardhan, Rizia, Hao, Feng, Nordlander, Peter, Halas, Naomi J

“…We show that a nanoparticle can serve as an efficient antenna for coupling of visible light into propagating plasmons of an Ag nanowire. For long wires, the…”
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Nanoparticle-lnduced Enhancement and Suppression of Photocurrent in a Silicon Photodiode by SUNDARARAJAN, Sri Priya, GRADY, Nathaniel K, MIRIN, Nikolay, HALAS, Naomi J

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Profiling the Near Field of a Plasmonic Nanoparticle with Raman-Based Molecular Rulers by Lal, Surbhi, Grady, Nathaniel K, Goodrich, Glenn P, Halas, Naomi J

“…The enhanced local optical fields at the surface of illuminated metallic nanoparticles and nanostructures are of intense fundamental and technological…”
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Determining the Conformation of Thiolated Poly(ethylene glycol) on Au Nanoshells by Surface-Enhanced Raman Scattering Spectroscopic Assay by Levin, Carly S, Bishnoi, Sandra Whaley, Grady, Nathaniel K, Halas, Naomi J

“…The packing density of thiolated poly(ethylene glycol) (PEG) adsorbates on Au nanoshells is determined by exploiting the surface-enhanced Raman scattering…”
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Optically-Driven Collapse of a Plasmonic Nanogap Self-Monitored by Optical Frequency Mixing by Grady, Nathaniel K, Knight, Mark W, Bardhan, Rizia, Halas, Naomi J

“…A nanoparticle separated from a metallic surface by a few-nanometer thick polymer layer forms a nanoscale junction, or nanogap. Illuminating this structure…”
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