Departmental Papers (ESE)


Following our recent theoretical and experimental results that show how zero-permittivity metamaterials may provide anomalous tunneling and energy squeezing through ultranarrow waveguide channels, here we report an experimental investigation of the bending features relative to this counterintuitive resonant effect. We generate the required effectively zero permittivity using a waveguide operating at the cutoff of its dominant mode, and we show how sharp and narrow bends may be inserted within the propagation channel without causing any sensible reflection or loss and without affecting its tunneling properties.

Document Type

Journal Article

Date of this Version



Suggested Citation:
Edwards, B., Alù, A., Silveirinha, M.G. and Engheta, N. (2009). "Reflectionless sharp bends and corners in waveguides using epsilon-near-zero effects." Journal of Applied Physics. 105, 044905.

© 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics and may be found at



Date Posted: 22 December 2010

This document has been peer reviewed.