Modal interference in spiky nanoshells

Spiky Strings and Spin Chains

We determine spectral curves for the known spiky string solutions in AdS space in the limit of large angular momentum. We also construct generic multi-spike solutions in this limit and compute the corresponding spectral data. The resulting spectral curves precisely match those of the classical spin chain describing the dual operators in one-loop gauge theory. Our results confirm the map between...

Modal interference in optical nanofibers for sub-Angstrom radius sensitivity

FREDRIK K. FATEMI,* JONATHAN E. HOFFMAN, PABLO SOLANO, ELIOT F. FENTON, GUY BEADIE, STEVEN L. ROLSTON, AND LUIS A. OROZCO Army Research Laboratory, Adelphi, Maryland 20783, USA Joint Quantum Institute, Department of Physics, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, USA Naval Research Laboratory, Washington, DC 20375, USA *Correspon...

Photoelectron imaging of modal interference in plasmonic whispering gallery cavities.

We use three-photon photoemission electron microscopy (PEEM) to investigate the interference of coherently excited dipolar and quadrupolar resonant modes of plasmonic whispering gallery resonators formed by circular grooves patterned into a flat Au surface. Optical scattering and cathodoluminescence spectroscopy are used to characterize the cavity resonance spectra for a wide range of cavity ra...

Gold Nanoshells in Biomedical Applications

Spiky oscillations in NF-kB signalling

The NF-κB signalling system is involved in a variety of cellular processes including immune response, inflammation, and apoptosis. Recent experiments have found oscillations in the nuclearcytoplasmic translocation of the NF-κB transcription factor [Hoffmann et al. (2002) Science 298, 1241; Nelson et al. (2004) Science 306, 704.] How the cell uses the oscillations to differentiate input conditio...