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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.<\/jats:p>","DOI":"10.1063\/1.3074506","type":"journal-article","created":{"date-parts":[[2009,2,19]],"date-time":"2009-02-19T03:14:12Z","timestamp":1235013252000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":122,"title":["Reflectionless sharp bends and corners in waveguides using epsilon-near-zero effects"],"prefix":"10.1063","volume":"105","author":[{"given":"B.","family":"Edwards","sequence":"first","affiliation":[{"name":"University of Pennsylvania 1 Department of Electrical and Systems Engineering, , Philadelphia, Pennsylvania 19104, USA"}]},{"given":"A.","family":"Al\u00f9","sequence":"additional","affiliation":[{"name":"University of Pennsylvania 1 Department of Electrical and Systems Engineering, , Philadelphia, Pennsylvania 19104, USA"},{"name":"University of Texas at Austin 3 Department of Electrical and Computer Engineering, , 1 University Station, ENS 616, Austin, Texas 78712\u20130240, USA"}]},{"given":"M. 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