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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.
Illinois 2009 nano-biophotonics Summer School, Lecture 6: Cell Cycle and Cancer Cell
28 Oct 2009 | | Contributor(s):: Marina Marjanovic
Cell Cycle and Cancer CellTopics: The functions of cell division: reproduction The functions of cell division: growth and development The functions of cell division: tissue renewal The structure and function of epithelial tissues Epithelial tissues Types of connective tissue Connective tissues...
Experiment vs. Modelling: What's the problem?
10 Aug 2009 | | Contributor(s):: William L. Barnes
Progress in plasmonics has been greatly assisted by developments in experimental techniques and in numerical modelling. This talk will look at some of the difficulties that emerge when comparisons are made between experiment and theory. Through the use of four examples I will illustrate what...
Energy and Nanoscience A More Perfect Union
29 Mar 2009 | | Contributor(s):: Mark Ratner
Huge problems of energy and sustainability confront the science/engineering community, mankind, and our planet. The energy problem comes in many dimensions, including supply, demand, conservation, transportation, and storage. This overview will stress the nature of these problems, and offer a...
Designer Atoms: Engineering Rydberg Atoms Using Pulsed Electric Fields
out of 5 stars
20 Jun 2008 | | Contributor(s):: F. Barry Dunning
Advances in experimental technique allow application of pulsed unidirectional electric fields, termed half-cycle pulses (HCPs), to Rydberg atoms whose characteristic times are much less than the classical electron orbital period. In this limit each HCP simply delivers an impulsive momentum...
Linear and Nonlinear Optical Devices Based on Slow Light Propagation: Figures of Merit
19 May 2008 | | Contributor(s):: Jacob B. Khurgin
Performance of optical delay lines and nonlinear devices based on slow wave propagation in photonic crystal waveguides in the presence of higher order dispersion is analyzed and compared with other slow light schemes, such as coupled resonators, media with electromagnetically-induced...
"Ab Initio" Theory of Novel Micro and Nanolasers
19 May 2008 | | Contributor(s):: A. Douglas Stone
While the laser is one of the most important inventions of the past century and one of the most interesting and controllable non-linear systems in physics, there is surprisingly little predictive theory of lasing properties. Predicting lasing thresholds and output power far above threshold in...
Metamaterials, Part 3: Cloaking and Transformation Optics
01 May 2008 | | Contributor(s):: Vladimir M. Shalaev
Part 3/3. Metamaterials are expected to open a gateway to unprecedented electromagnetic properties and functionality unattainable from naturally occurring materials, thus enabling a family of new “meta-devices”. In these three lectures, we review this new emerging field and significant progress...
Metamaterials, Part 2: Negative-Index, Nonlinear Optics and Super/Hyper-Lenses
Part 2/3. Metamaterials are expected to open a gateway to unprecedented electromagnetic properties and functionality unattainable from naturally occurring materials, thus enabling a family of new “meta-devices”. In these three lectures, we review this new emerging field and significant progress...
Metamaterials, Part 1: Electrical and Magnetic Metamaterials
Part 1/3. Metamaterials are expected to open a gateway to unprecedented electromagnetic properties and functionality unattainable from naturally occurring materials, thus enabling a family of new “meta-devices”. In these three lectures, we review this new emerging field and significant progress...
Lecture 20: Diffusion - Part2
23 Apr 2008 | | 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 | | 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 | | Contributor(s):: Pavel Belov
The resolution of conventional imaging systems is restricted by thediffraction limit: the details smaller than half-wavelength of radiationcannot be resolved. Using novel engineered media with extreme opticalanisotropy and their waveguiding properties it is possible to overcomethe classical...
CAD of MEMS & NEMS: State of the Art & Future Challenges
24 Feb 2008 | | 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 reviews recent developments in taking that framework and making it pertinent to the design of systems...
Plasmonic Metamaterials: Unusual Optics and Applications
28 Feb 2008 | | 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 frequency of surface plasmon resonance plasmons may perceive regular dielectrics as negative index...
MCW07 A Quantum Open Systems Approach to Molecular-Scale Devices
25 Feb 2008 | | 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 without requiring ensemble average. Molecular-scale devices are open quantum systems whose...
Three-Dimensional Photonic Crystals
11 Feb 2008 | | 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 include a hexagonal lattice of air holes drilled in a Si slab, or a set of Si rods at square...
KIST/PU Ligand-functionalized gold nanorods as theragnostic agents
06 Dec 2007 | | 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 luminescence (TPL) when excited by fs-pulsed laser irradiation, and have been monitored in vivo while...
Silicon Photonics: Opportunity Challenges and Recent Results
02 Nov 2007 | | 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 nearly one billion transistors and has the computing power that only a decade ago would take up an...
Conquering Surface Plasmon Resonance Loss in Metallic Nanostructures
16 Oct 2007 | | Contributor(s):: Mikhail A. Noginov
We have observed the compensation of loss in metal by gain indielectric in the mixture of Ag aggregate and rhodamine 6G dye. Thedemonstrated six-fold enhancement of the Rayleigh scattering is the evidence of the enhancement of the localized surface plasmon (SP) resonance. In the attenuated total...