1 / 7

Metamaterials MEEN 3344 Christopher Acosta

Metamaterials MEEN 3344 Christopher Acosta. What are Metamaterials ?. They are an assembly of several individual elements Engineered structures / split-ring resonators / LC circuits Primary research of meta-material investigates negative refractive index

Download Presentation

Metamaterials MEEN 3344 Christopher Acosta

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. MetamaterialsMEEN 3344Christopher Acosta

  2. What are Metamaterials? • They are an assembly of several individual elements • Engineered structures / split-ring resonators /LC circuits • Primary research of meta-material investigates negative refractive index • Permittivity and Permeability have to be both negative. • the meta-material used has to be smaller than the wavelength

  3. Electromagnetic waves understanding how the speed of light traveling though a refractive index can describe how light or any other radiation propagates though metamaterials.

  4. uses • The greatest potential of meta-materials is the possibility to create a structure with a negative refractive index • Sub wavelength imaging which is produced by having a negative refractive index, an optical property creating a Super lenses • Phased array technology that could render perfect holograms on a 2D display • Cloaking devices, microwave invisibility cloaks

  5. How do metamaterials achieve invisibility • light waves can be guided by the metamaterials around the object and back to its original course • microwaves wavelengths are measured in centimeters scientists have the technology to create metamaterials small enough to manipulate them, moving waves around an object

  6. Limitations • Light wavelengths are measured in nanometers (billionths of a meter), and the metamaterials needed to block light must be even smaller than that • don't currently have the technology to manufacture materials on the small scale required to manipulate light waves • cloaking device would have to be arranged to manipulate light on the entire visible spectrum, because different colors exist on different wavelengths • Cloaking devices would plunge a person on the inside into darkness • By continuing research and funding for metamaterials, these challenges can soon be overcome

  7. Work sited • William D. Callister, Jr. David G.Rethwisch. Fundamental of Materials Science and Engineering an Intergrated Approach. third edition. Danvers: John Wiley & sons, 2008. • Maryland, University of. Material Science and Engineeering: Metamaterial. 2006-2001. A.   • James Clark School of Engingeering. <http://www.mse.umd.edu/whatismse/metamaterials.html>. • Overheim, R.Daniel and David L.Wagner. Light And Color. Ed. Edinboro State College. Jhon Wiley & Sons, INC., 1982. • Pendry, J.B. superlens - wikipedia, the free encyclopedia. 1 september 2012. 3 september 2013 <http://en.wikipedia.org/wiki/superlens>. • Rincon, Paul. "Experts test Cloaking technology." Science reporter, BBC News (2006).

More Related