Search Publications

Displaying 51 - 58 of 58

Far-field superfocusing with optical fiber based surface plasmonic lens made of nanoscale concentric annular slits

September 30, 2011

Author(s)

Yuxiang Liu, Hua Xu, Felix Stief, Nikolai Zhitenev, Miao Yu

We present experimental demonstration of three-dimensional superfocusing by using an optical fiber based surface plasmonic (SP) lens with nanoscale concentric annular slits. To the best of our knowledge, this is the first time that a far-field, sub

Enhanced coupling between light and surface plasmons by nanostructured Fabry-Perot resonator

September 26, 2011

Author(s)

Brian S. Dennis, Vladimir Aksyuk, Michael Haftel, Stefan T. Koev, Girsh Blumberg

It is recognized that surface plasmons (SPs),which can be present on particulate, smooth, or corrugated metallic surfaces, have enormous potential in the fields of novel nano-optical and opto-electronic devices, as well as in spectroscopic, biological, and

Measuring agglomerate size distribution and dependence of localized surface plasmon resonance absorbance on gold nanoparticle agglomerate size using analytical ultracentrifugation

September 3, 2011

Author(s)

Justin M. Zook, Vinayak Rastogi, Robert I. MacCuspie, Athena M. Keene, Jeffrey A. Fagan

Nanoparticles frequently agglomerate when dispersed into relevant biological and environmental media, with the resulting change to the effective size distribution dramatically affecting the potential nanotoxicity and the absorbance for biosensor

The electromagnetics of light transmission through subwavelength slits in metallic films

August 15, 2011

Author(s)

John Weiner

We show, by numerically calculating the relevant electromagnetic fields and charge current densities, how light transmission through single wsubwavelength apertures and through periodic aperture arrays in a real metal film is governed by local charges and

PDH-locked, frequency-stabilized cavity ring-down spectrometer

June 16, 2011

Author(s)

Joseph T. Hodges, A. Cygan, Piotr Maslowski, Katarzyna E. Bielska, S. Wojtewicz, J. Domyslawska, Hisashi Abe, R.S. Trawinski, R. Ciurylo

We describe a high sensitivity and high spectral resolution laser absorption spectrometer based upon the frequency-stabilized cavity ring-down spectroscopy (FS-CRDS) technique. We used the Pound-Drever-Hall (PDH) method to lock the probe laser to the high

Metal-Insulator-Metal Surface Plasmon Polariton Waveguide Filters with Cascaded Transverse Cavities

December 23, 2010

Author(s)

Lorena O. Diniz, Frederico D. Nunes, Euclydes Marega, Jr., John Weiner, Ben-Hur V. Borges

In this work we propose a new approach for the desgn of resonant structures aiming at wavelength filtering applications. The structure consists of a subwavelength metal-insulator-metal (MIM)waveguide presenting cascaded cavities transversely arranged in

Theoretical and experimental evidence of the role of plasmonics in the cleaning of nanotubes

March 22, 2010

Author(s)

Abram Van Der Geest, Katie Hurst, John H. Lehman, Mark T. Lusk

It has been experimentally observed that amorphous carbon is removed from as-prepared, bulk, single-walled carbon nanotubes by illumination with 248 nm (5 eV) UV light. The process via which this occurs, though, has not yet been rigorously identified. We

Effects of Plasmon-Exciton Coupling on the Optical Properties of CdSe/Zns Quantum Dots Coupled to Gold Nanoparticles

January 25, 2010

Author(s)

Shin G. Chou, Hyeong G. Kang, Matthew L. Clarke, Jeeseong Hwang

By using a multi-color, multi-modal imaging platform, we look into the effects of exciton-plasmon coupling on a semiconductor quantum dot (QD) that is coupled to a nearby gold nanoparticles (AuNP). By exciting this coupled material with laser excitation