Ultra-stable nanoparticles of (CdSe)n and their unique properties

02 Aug 2012 | Online Presentations | Contributor(s): Atsuo Kasuya

Nanoparticles exhibit unique materials functions not realizable in the bulk solid, leading useful practical applications. Recent progresses in synthesis show possibility of producing them down to 1 nm comparable to molecular sizes in different geometrical structures. In such nano-structures, the …

Learning with nanoHUB

01 Aug 2012 | Online Presentations | Contributor(s): Quincy Leon Williams

Interactive media is the most valuable tool for engaging the younger generations of students and future researchers. Since, few instructors have the skills required to incorporate such new technology into their existing curricula, we developed a short seminar designed to bridge the gap between …

3D and 2D Metamaterials at Infrared Optical Frequencies

24 Jun 2012 | Online Presentations | Contributor(s): Igal Brener, Mohammad Mayy, Amanda Harding

Metamaterials (MM) provide for new ways of manipulating light and achieving complex functionality due to the ability to control the spatial distribution of the permittivity and permeability. This full functionality usually requires complex 3D assemblies of subwavelength resonators that are very …

Organic-Inorganic Hybrids for Energy & Environmental Applications

07 Feb 2012 | Online Presentations | Contributor(s): Emmanuel P. Giannelis

In recent years, "storm clouds" have been forming at the interface of energy resources, environment, and climate change that demand concerted action by scientists, engineers, and policy makers. In this talk I will present a new materials platform based on organic-inorganic hybrids that provides …

Taming Light and Electrons with Metamaterials

11 Jul 2011 | Online Presentations | Contributor(s): Nader Engheta

In recent years, in my group we have been working on various aspects of metamaterials and plasmonic nano-optics. We have introduced and been developing the concept of "metatronics", i.e. metamaterial-inspired optical nanocircuitry, in which the three fields of "electronics", "photonics" and …

Enhancing the Light-Matter Interaction with Optical Antennas

02 Jun 2011 | Online Presentations | Contributor(s): Lukas Novotny

Optical antennas are devices designed to efficiently convert optical radiation into localized energy, and vice versa. They enhance the interaction between light and matter, and have the potential to boost the efficiency of optoelectronic devices ranging from light-emitting diodes to solar cells. In …

Invisible cloaks and the perfect lens

16 May 2011 | Online Presentations | Contributor(s): John Pendry

Refractive materials gives us some limited control of light: we can fashion lenses, and construct waveguides, but complete control of light is beyond simple refracting materials. Ideally we might wish to channel and direct light as we please just as we might divert the flow of a fluid. Manipulation …

Trends in Nanoplasmonics: Smaller, Stronger, Faster!

25 Apr 2011 | Online Presentations | Contributor(s): Mark I Stockman

Nanoplasmonics deals with collective electron dynamics on the surface of metal nanostructures, which arises due to excitations called surface plasmons. The surface plasmons localize and concentrate optical energy in nanoscopic regions creating highly enhanced local optical fields. They undergo …

Slow and Fast Light - Penetrating the Fog

16 Dec 2010 | Online Presentations | 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 and media with electromagnetically-induced …

Photonic Metamaterials: From Linear to Nonlinear Optics

14 Dec 2010 | Online Presentations | Contributor(s): Natalia Litchinitser

Metamaterials open unparalleled opportunities for "engineering" previously inaccessible values of refractive indices from positive to near-zero and even negative values, and new avenues for light manipulation. While an enormous progress has been made in the field of linear optics of uniform …

Lectures on Low-Field Transport 3

08 Sep 2010 | Online Presentations | Contributor(s): Mark Lundstrom, Mohammad Mayy, Taina D. Matos

A clear understanding of near equilibrium carrier transport is essential for working on materials and devices. The field is an old one that has been treated in classic textbook, but with the rapid development of nanoscience and technology, the field is changing. An understanding of transport in …

Lectures on Low-Field Transport 2

08 Sep 2010 | Online Presentations | Contributor(s): Mohammad Mayy, Mark Lundstrom, Taina D. Matos

A clear understanding of near equilibrium carrier transport is essential for working on materials and devices. The field is an old one that has been treated in classic textbook, but with the rapid development of nanoscience and technology, the field is changing. An understanding of transport in …

Lectures on Low-Field Transport 1

08 Sep 2010 | Online Presentations | Contributor(s): Mohammad Mayy, Mark Lundstrom, Taina D. Matos

A clear understanding of near equilibrium carrier transport is essential for working on materials and devices. The field is an old one that has been treated in classic textbook, but with the rapid development of nanoscience and technology, the field is changing. An understanding of transport in …

NSU Lectures on Low-Field Transport: Lecture 0

06 Jul 2010 | Online Presentations | Contributor(s): Mohammad Mayy, Mark Lundstrom

A clear understanding of near equilibrium carrier transport is essential for working on materials and devices. The field is an old one that has been treated in classic textbook, but with the rapid development of nanoscience and technology, the field is changing. An understanding of transport in …

Developments in Metamaterials and Transformation Optics

29 Mar 2010 | Online Presentations | Contributor(s): David R. Smith

Metamaterials—artificially structured microcircuits that can mimic the electromagnetic response of atoms and molecules—have vastly expanded the opportunities available for the design of electromagnetic structures. Starting in 2000 with the first report of a “left-handed” metamaterial, for …

Photonic Crystals via Confinement of Anisotropic Colloids

02 Mar 2010 | Online Presentations | Contributor(s): Mohammad Mayy, Chekesha Liddell

Controlling light-matter interactions with materials structured at micron and submicron length scales has been predicted as the basis for enhancements in the performance of a range of technologies, including photovoltaics, sensors and solid state lighting devices. However, the types of …