Articles with "closed surfaces" as a keyword



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Minimal rays on closed surfaces

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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… read more here.

Keywords: universal cover; rays closed; closed surfaces; minimal geodesics ... See more keywords
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Roughness analysis of general-shape particles, from 2D closed outlines to 3D closed surfaces

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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… read more here.

Keywords: outlines closed; closed surfaces; closed outlines; roughness ... See more keywords
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Trapped spoof surface plasmons with structured defects in textured closed surfaces.

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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… read more here.

Keywords: textured closed; surface plasmons; trapped spoof; spoof surface ... See more keywords