Results 331 to 340 of about 646,363 (390)
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Nanoscale, 2014
A series of layered molybdenum dichalcogenides, i.e., MoX₂ (X = S, Se and Te), were prepared in cyclohexyl pyrrolidinone by a liquid-phase exfoliation technique. The high quality of the two-dimensional nanostructures was verified by transmission electron
Kangpeng Wang +9 more
semanticscholar +1 more source
A series of layered molybdenum dichalcogenides, i.e., MoX₂ (X = S, Se and Te), were prepared in cyclohexyl pyrrolidinone by a liquid-phase exfoliation technique. The high quality of the two-dimensional nanostructures was verified by transmission electron
Kangpeng Wang +9 more
semanticscholar +1 more source
Negative refraction and planar focusing based on parity-time symmetric metasurfaces.
Physical Review Letters, 2014We introduce a new mechanism to realize negative refraction and planar focusing using a pair of parity-time symmetric metasurfaces. In contrast to existing solutions that achieve these effects with negative-index metamaterials or phase conjugating ...
R. Fleury, D. Sounas, A. Alú
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Microfacet Models for Refraction through Rough Surfaces
Rendering Techniques, 2007Microfacet models have proven very successful for modeling light reflection from rough surfaces. In this paper we review microfacet theory and demonstrate how it can be extended to simulate transmission through rough surfaces such as etched glass.
Bruce Walter +3 more
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Nano letters (Print), 2012
Experiments on ultrathin anisotropic arrays of subwavelength optical antennas display out-of-plane refraction. A powerful three-dimensional (3D) extension of the recently demonstrated generalized laws of refraction and reflection shows that the interface
F. Aieta +5 more
semanticscholar +1 more source
Experiments on ultrathin anisotropic arrays of subwavelength optical antennas display out-of-plane refraction. A powerful three-dimensional (3D) extension of the recently demonstrated generalized laws of refraction and reflection shows that the interface
F. Aieta +5 more
semanticscholar +1 more source
Refractive lens exchange as a refractive surgery modality
Current Opinion in Ophthalmology, 2004Refractive lens exchange is becoming a more popular method of refractive surgery in the presbyopic patient. The limitations of keratorefractive surgery have led to a resurgence of lens exchange surgery for patients with prescriptions outside the limits of corneal refractive procedures, in addition to patients with routine refractive errors requesting a
Mark Packer +2 more
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Refractive index of propylamine
2008This chapter provides refractive index of undecane at various temperatures and wavelengths.
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All-angle negative refraction without negative effective index
, 2002We describe an all-angle negative refraction effect that does not employ a negative effective index of refraction and involves photonic crystals. A few simple criteria sufficient to achieve this behavior are presented.
C. Luo +3 more
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Negative Refraction Metamaterials: Fundamental Principles and Applications
, 2005Contributors. Preface. 1. Negative-Refractive-Index Transmission-Line Metamaterials (A. Iyer & G. Eleftheriades). 2. Passive Microwave Devices and Antennas Using Negative-Refractive-Index Transmission-Line Metamaterials (G. Eleftheriades). 3.
G. Eleftheriades, K. Balmain
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Dispersion of bound electron nonlinear refraction in solids
, 1991A two-hand model is used to calculate the scaling and spectrum of the nondegenerate nonlinear absorption. From this, the bound electronic nonlinear refractive index n/sub 2/ is obtained using a Kramers-Kronig transformation.
M. Sheik-Bahae +3 more
semanticscholar +1 more source
Optometry and Vision Science, 1997
Spherocylindrical optical elements can be decomposed into a sphere-equivalent component and two cross-cylinder components, oriented at 45 degrees to one another. These components in turn can be represented with a simple matrix formalism. This matrix formalism allows it to be seen that the components also form members of an eight element group ...
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Spherocylindrical optical elements can be decomposed into a sphere-equivalent component and two cross-cylinder components, oriented at 45 degrees to one another. These components in turn can be represented with a simple matrix formalism. This matrix formalism allows it to be seen that the components also form members of an eight element group ...
openaire +3 more sources