Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
materials science
Negative refraction and focusing of elastic Lamb waves at an interface
Physical Review B - Condensed Matter and Materials Physics, Volume 83, No. 1, Article 014106, Year 2011
Notification
URL copied to clipboard!
Description
We study negative refraction and focusing of elastic waves in a simple mechanical system comprised of a freestanding plate with a step change in thickness. A point-focused and intensity-modulated laser source is used to excite backward-propagating Lamb waves on one side of the step, and the displacement field is probed using an optical interferometer. Conversion between forward- and backward-propagating modes at the interface leads to negative refraction, and we demonstrate for the first time the operation of a flat lens, similar to that predicted by Veselago in negative-index media, for guided elastic waves in isotropic media. We propose that guided elastic waves provide a convenient and powerful experimental test bed for the study of negative-index physics. © 2011 American Physical Society.
Authors & Co-Authors
Bramhavar, Suraj
United States, Boston
Boston University
Prada, Claire
France, Paris
Institut Langevin
Maznev, Alexei A.
United States, Cambridge
Massachusetts Institute of Technology
Every, Arthur G.
South Africa, Johannesburg
University of the Witwatersrand
Norris, Theodore B.
United States, Ann Arbor
University of Michigan, Ann Arbor
Murray, Todd W.
United States, Boulder
University of Colorado Boulder
Statistics
Citations: 69
Authors: 6
Affiliations: 6
Identifiers
Doi:
10.1103/PhysRevB.83.014106
ISSN:
10980121
e-ISSN:
1550235X