We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleExperimental verification of a negative index of refraction.AuthorsShelby RA; Smith DR; Schultz SPublicationScience (New York, N.Y.), 2001, Vol 292, Issue 5514, p77ISSN0036-8075Publication typearticleDOI10.1126/science.1058847