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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.
Lecture 20: Diffusion - Part2
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23 Apr 2008 | Online Presentations | Contributor(s): Paul R Selvin
Diffusion and bacteria moving, power consumed by bacteria, Introduction to Reynolds number, Where Bacteria Live, How E. Coli move and swim,
Lecture 17: Diffusion - Part 1
15 Apr 2008 | Online Presentations | Contributor(s): Paul R Selvin
Diffusion, Directed motors, Thermal motion, nerve synapse, Efficiency of Diffusion
Lecture 15: Confocal and STED Microscopy
Confocal Detection, Energy Transfer, Confocal Microscopy, STED (Stimulated Emission Depletion),Improved resolution
Transmission of images with subwavelength resolution to distances of several wavelengths in microwave, terahertz and infrared ranges
08 Apr 2008 | Online Presentations | Contributor(s): Pavel Belov
The resolution of conventional imaging systems is restricted by the diffraction limit: the details smaller than half-wavelength of radiation cannot be resolved. Using novel engineered media with …
CAD of MEMS & NEMS: State of the Art & Future Challenges
24 Feb 2008 | Online Presentations | Contributor(s): Andreas Cangellaris
Computer aided design environments are very mature and used extensively for the design of every integrated electronical component that is commercially available to all of us. This presentation …
Plasmonic Metamaterials: Unusual Optics and Applications
28 Feb 2008 | Online Presentations | Contributor(s): Igor Smolyaninov
Surface plasmon-polaritons (or plasmons) are collective excitations of the conduction electrons and the electromagnetic field on the surface of such good metals as gold and silver. Near the …
MCW07 A Quantum Open Systems Approach to Molecular-Scale Devices
25 Feb 2008 | Online Presentations | Contributor(s): Yongqiang Xue
Experimental advances in electrically and optically probing individual molecules have provided new insights into the behavior of single quantum objects and their interaction with the nanoenvironments …
Three-Dimensional Photonic Crystals
11 Feb 2008 | Online Presentations | Contributor(s): Minghao Qi
A photonic crystal (PhCs) is typically a composite of a high-dielectric-constant material (e.g. Si) and a low-constant one (e.g. SiO2 or air), arranged periodically in space. Two dimensional examples …
KIST/PU Ligand-functionalized gold nanorods as theragnostic agents
06 Dec 2007 | Online Presentations | Contributor(s): Alexander Wei
Plasmon-resonant gold nanorods have been examined as multifunctional agents for imaging and photoactivated therapies. Nanorods can be imaged with single-particle sensitivity by two-photon …
Silicon Photonics: Opportunity Challenges and Recent Results
02 Nov 2007 | Online Presentations | Contributor(s): Mario Paniccia
The silicon chip has been the mainstay of the electronics industry for the last 40 years and has revolutionized the way the world operates. Today a silicon chip the size of a fingernail contains …
Conquering Surface Plasmon Resonance Loss in Metallic Nanostructures
16 Oct 2007 | Online Presentations | Contributor(s): Mikhail A. Noginov
We have observed the compensation of loss in metal by gain in dielectric in the mixture of Ag aggregate and rhodamine 6G dye. The demonstrated six-fold enhancement of the Rayleigh scattering is the …
Routing Light with Nematicons: Light Localization and Steering in Liquid Crystals
10 Oct 2007 | Online Presentations | Contributor(s): Gaetano Assanto
Nematic liquid crystals support optical spatial solitons via light-induced molecular reorientation. Such all-optical waveguides can channel a signal towards a destination, hence permitting signal …
MCW07 Simple Models for Molecular Transport Junctions
13 Sep 2007 | Online Presentations | Contributor(s): Misha Galperin, Abraham Nitzan, Mark A. Ratner
We review our recent research on role of interactions in molecular transport junctions. We consider simple models within nonequilibrium Green function approach (NEGF) in steady-state regime.
Micro-scaled Biochips with Optically Active Surfaces for Near and Far-field Analysis of Cellular Fluorescence
31 Aug 2007 | Online Presentations | Contributor(s): Huw Summers
The integration of thin (< 100 nm) metal films with micro-scale optical waveguides provides a route to controlled spatial excitation of cellular fluorescence within a biochip platform. Surface …
Biosensing applications of Plasmon Resonance in gold nanoparticles
02 Aug 2007 | Online Presentations | Contributor(s): Karina Moore
Light can be used to excite plasmon resonance in gold nanoparticles. Plasmon resonance occurs on the nanoscale as the particles become excited and plasmon oscillations arise in each particle of a …
Pulsed Laser Deposition of Thin Films
02 Aug 2007 | Online Presentations | 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 …
26 Jun 2007 | Online Presentations | 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. …
Some Remarks to Electrodynamics of Materials with Negative Refraction
26 Jun 2007 | Online Presentations | 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 …
Victor Veselago Interview on Nanotechnology and Photonics
26 Jun 2007 | Online Presentations | 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 | Online Presentations | Contributor(s): Timothy D. Sands
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 …
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