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When optical components are reduced to the nanoscale, they exhibit interesting properties that can be harnessed to create new devices. For example, imagine a block of material with thin layers of alternating materials. This creates a periodic arrangement of alternating dielectric constants, forming a "photonic crystal" that is analogous to the electronic crystals used in semiconductor devices. Photonic crystals, along with quantum dots and other devices patterned at the nanoscale, may form the basis for sensors and switches used in computers and telecommunications. More information on Nanophotonics can be found here.
Pulsed Laser Deposition of Thin Films
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02 Aug 2007 | | Contributor(s):: Josh Kaufman
Thin metal films have many applications from optical limiters to nanocircuits. Methods for fabricating these films differ in theory and complexity. Pulsed Laser Deposition (PLD) is a popular method for fabricating thin films. A number of thin films were fabricated using PLD. Silver films of...
26 Jun 2007 | | Contributor(s):: David D. Nolte
While single-molecule detection through fluorescence has now become common-place, there has been no analogous single-molecule capability using direct detection approaches such as interferometry. This limitation is slowly yielding to high-speed interferoemtric detection that is pushing the...
Some Remarks to Electrodynamics of Materials with Negative Refraction
26 Jun 2007 | | Contributor(s):: Victor G. Veselago
The negative refraction coefficient n < 0 can be introduced for isotropic materials with anti-parallel directions of phase and group velocities. If some of material can be described by negative n it will have also negative values of both (electrical ε and magnetic μ) permeabilities. In materials...
Victor Veselago Interview on Nanotechnology and Photonics
26 Jun 2007 | | Contributor(s):: Victor G. Veselago, Phillip Fiorini
Nanotechnology and photonics interview with Phillip Fiorini.
Solid-State Lighting: An Opportunity for Nanotechnologists to Address the Energy Challenge
25 Apr 2007 |
More than one-fifth of the electrical power consumed in the U.S. is used for general illumination. Much of this energy is wasted to heat filaments in incandescent lamps, a century-old technology with an efficiency of about 5%. Fluorescent lighting is more efficient, but problems of color quality,...
Nanoscale Antenna Apertures
24 Apr 2007 | | Contributor(s):: Xianfan Xu
This presentation will discuss light concentration and enhancement in nanometer-scale ridge aperture antennas. Resent research, including numerical simulations and near field optical measurements has demonstrated that nanoscale ridge antenna apertures can concentrate light into nanometer domain....
BNC Annual Research Symposium: Nanophotonics
23 Apr 2007 | | Contributor(s):: Vladimir M. Shalaev
This presentation is part of a collection of presentations describing the projects, people, and capabilities enhanced by research performed in the Birck Center, and a look at plans for the upcoming year.
Surprises on the nanoscale: Plasmonic waves that travel backward and spin birefringence without magnetic fields
08 Jan 2007 |
As nanonphotonics and nanoelectronics are pushed down towards the molecular scale, interesting effects emerge. We discuss how birefringence (different propagation of two polarizations) is manifested and could be useful in the future for two systems: coherent plasmonic transport of near-field...
Plasmon-resonant Nanorods as Multifunctional Imaging Agents
28 Dec 2006 | | Contributor(s):: Alexander Wei
Gold nanorods have several outstanding characteristics as optical contrastagents for biomedical imaging. Their strong optical absorption atnear-infrared (NIR) frequencies can be used to generate contrast for opticalcoherence tomography (OCT) imaging, and is well matched for detectionmodalities...
Nanotechnology and Visible Light
19 Dec 2006 | | Contributor(s):: Raymond Serrano
This submission is an undergraduate project by Raymond Serrano, a chemistry student at UTEP. Raymond has been a nanoHUB student for one year.In addition to being factor of scale, nanoscience is also defined by the changes in the physical and chemical properties the nanoparticles. This...
Nanoscale Plasmonic Heterostructures
15 Dec 2006 |
Surface plasmons are electromagnetic modes that are present at the interface of a metal and dielectric material. Depending upon the structure of the metal, surface plasmons demonstrate a wide range of characteristics, such as optical field enhancements, tunable resonances, and the ability to...
ECE 695s Lecture 15: Metamaterials: Giving Light the Second Hand, Part 2
20 Nov 2006 | | Contributor(s):: Vladimir M. Shalaev
A subsequent version of this lecture is available in a three lecture short course Metamaterials: A New Paradigm of Physics and Engineering.
Nano Scale Optics with Nearfield Scanning Optical Microscopy (NSOM)
16 Nov 2006 | | Contributor(s):: Reuben Bakker, Vladimir M. Shalaev
NearfieldScanning Optical Microscopy (NSOM )is a relatively new technology that defeats the diffraction limit for optical measurements by utilizing the near field portion of electromagnetism to window down to ~ 10 nm spatial resolution. NSOM instrumentation has progressively developed over the...
ECE 695s Lecture 14: Metamaterials: Giving Light the Second Hand, Part 1
15 Nov 2006 | | Contributor(s):: Vladimir M. Shalaev
ECE 695s Lecture 11: Guiding Light Along Nanoparticle Arrays
02 Nov 2006 | | Contributor(s):: Vladimir M. Shalaev
ECE 695s Lecture 10: Surface Plasmon Excitation
ECE 695s Lecture 9: Introduction to Metal Optics
02 Oct 2006 | | Contributor(s):: Vladimir M. Shalaev
ECE 695s Lecture 8: Photonic Crystals Fibers
ECE 695s Lecture 7: Photonic Crystal Waveguides