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Published in 2017 at "Israel Journal of Mathematics"
DOI: 10.1007/s11856-017-1443-9
Abstract: Given an arbitrary Riemannian metric on a closed surface, we consider length-minimizing geodesics in the universal cover. Morse and Hedlund proved that such minimal geodesics lie in bounded distance of geodesics of a Riemannian metric…
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Keywords:
universal cover;
rays closed;
closed surfaces;
minimal geodesics ... See more keywords
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Published in 2019 at "Powder Technology"
DOI: 10.1016/j.powtec.2019.08.042
Abstract: Abstract Surface roughness plays an important role in macro and micro-scale granular behaviors; however, there is currently lack of a unified approach to quantify the roughness of closed outlines and surfaces, which can consider the…
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Keywords:
outlines closed;
closed surfaces;
closed outlines;
roughness ... See more keywords
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Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.000791
Abstract: We demonstrate that a defect unit in periodic textured closed surfaces is able to trap spoof surface plasmons (SPs) into a deep subwavelength scale. The resonant frequency of a trapped spoof SP can be tuned…
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Keywords:
textured closed;
surface plasmons;
trapped spoof;
spoof surface ... See more keywords