Direct observation of negative-index microwave surface waves

• Published in: Scientific reports Vol. 6; no. 1; p. 22018
• Main Authors: Dockrey, J. A., Horsley, S. A. R., Hooper, I. R., Sambles, J. R., Hibbins, A. P.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 23.02.2016; Nature Publishing Group
• Subjects: 639/624/400/1102; 639/766/119/544; Energy flow; Humanities and Social Sciences; multidisciplinary; Propagation; Science; Velocity

Waves propagating in a negative-index material have wave-front propagation (wavevector, k ) opposite in direction to that of energy flow (Poynting vector, S ). Here we present an experimental realisation at microwave frequencies of an analogous surface wave phenomenon whereby a metasurface supports...