Sending report ...NCN Nanophotonics: Tutorials
Some Remarks to Electrodynamics of Materials with Negative Refraction
- This resource has a 7.2 Ranking
-
Ranking is calculated from a formula comprised of user reviews and usage statistics. Learn more ›
Usage Stats Last 12 Months: updated 01 Oct, 2008 Users: 157 Reviews & Citations Google/IEEE Avg. Review: Citations: 0
157 users
Supporting Documents
- Presentation (with audio) (SWF)
- Presentation Slides (PDF, 5.88 Mb)
- Podcast (video) What's this? (MP4, 54.19 Mb)
- Podcast (audio) What's this? (MP3, 29.59 Mb)
| Contributor(s) | Victor G. Veselago Moscow Institute of Physics and Technology |
|---|---|
| Abstract | 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 with negative refraction coefficient, the realization of many physical laws is unusual. For example, in the case n < 0, the refracted beam in Snellius law is situated simmetrically with one for the case of positive n. Some other examples will be discussed among them is the very interesting flat lens, which can be used in so called “optical tweezers”. The discovery of negative refraction materials poses a very important question – to what extent are all the laws and formulas of electrodynamics, optics and related technical sciences valid, when n is negative? Can we always simply change the sign n → - n as, for example, in Snellius law? Generally speaking, the answer to this question is negative. Many laws and equations of electrodynamics and optics correspond to the case of non-magnetic materials with permeability μ = 1. This non-magnetic approach leads to many formulas that drastically change for the case μ ≠ 1, especially for μ < 0. For example, if one substitutes negative n into Fresnel equations, the results will be wrong. Special table, which outlines the situation, will be given in the talk. In the talk, some examples of negative refaction materials will be discussed and their properties and possible applications. The negative refraction phenomena can be observed not only in materials with negative value of n, ε and μ, but in many substances, which cannot be described by these values. So, this sort of refraction presents in anysotropic crystals. These materials are described by tensor, not scalar values of n, ε and μ. The other, very important example of negative-refraction materials are called photonic crystals. The main difference between photonic crystals and materials with negative n, ε and μ, is the relation between wavelength λ and lattice constant a in materials with negative refraction coefficient λ > a, but in photonic crystals a ≥ λ. So, materials with negative refraction coefficient can be described on the base of harmonic oscillation equation, but photonic crystals – on the base of Blokh, or Mattiew equations. The phenomenology of this two sort of materials is in many cases similar, but physics background is different. This talk will include discussion of the problem of estimation of pressure of light in LHM materials. |
| Biography |
|
| Sponsored by | The Birk Nanotechnology Center The Bindley Bioscience Center Purdue Discovery Park The NASA Institute for Nanoelectronics and Computing The Network for Computational Nanotechnology VEECO NCN Student Leadership Council Department of Chemistry Department of Physics School of Chemical Engineering School of Electrical and Computer Engineering School of Mechanical Engineering |
| Cite this work | If you reference this work in a publication, please cite as follows: |
| Date posted | 26 Jun, 2007 |
| Time | 03:00 PM, June 12, 2007 |
| Location | Birck Nanotechnology Center, Room 1001 |
| Type | Online Presentations |
| Tags |
Victor Georgievich Veselago graduated from Moscow University in 1952, and was with P.N. Lebedev Physical Institute, Moscow, from 1952 to 1983. From 1983 up to now, he is the head of laboratory of magnetic materials in A.M. Prokhorov Institute of General Physics. He received his PhD degree in 1959, for radiospectropy investigation of molecular spectra, and degree Doctor of Science (solid state physics) in 1974 for investigation of solid state in high magnetic field., both in P.N. Lebedev Institute. From 1980 until now, is a professor of applied physics in Moscow Institute of Physics and Technology. The area of scientific interest of V.G. Veselago is magnetism, solid-state physics, electro-dynamics. In his papers, published in 1966-1972 was at the first time considered electrodynamics of material with negative value of refraction index (so called Left-Handed Materials, LHM). V.G. Veselago is a winner of State Prize for science of USSR (1976), and a winner of academician V.A. Fock prize (2004). He is also an Honored Scientist of Russian Federation (2002).Citations
The following are publications that have cited this resource, separated by their affiliation to the NCN.
No citations found.
Reviews
The following are reviews of this resource from other site members.
No reviews found. Be the first to review this resource!
See also
The following are resources that may cover similar or related topics.
- 10.0 Ranking Series Part of: NCN Nanophotonics: Tutorials
People who looked at this also looked at:
Network Recommendations powered by CIKNOW developed by the Science of Networks in Communities Research (SONIC) group at Northwestern University.
Recommendations will load momentarily. If you do not see content change after 30 seconds, there may be a number of reasons:
- You have javascript turned off in your browser.
- You have browser incapable of handling the scripts that load the recommendations.
- There is a problem with the recommendation service and it failed to respond.