scholarly journals Imaging three-dimensional light propagation through periodic nanohole arrays using scanning aperture microscopy

2007 ◽  
Vol 91 (10) ◽  
pp. 103118 ◽  
Author(s):  
Mustafa H. Chowdhury ◽  
Jeffrey M. Catchmark ◽  
Joseph R. Lakowicz
Keyword(s):  
Light Propagation ◽  
Three Dimensional ◽  
Nanohole Arrays

scholarly journals Light propagation in three-dimensional photonic crystals

2009 ◽  
Vol 18 (1) ◽  
pp. 386 ◽  
Author(s):  
Shoichi Kawashima ◽  
Kenji Ishizaki ◽  
Susumu Noda
Keyword(s):  
Photonic Crystals ◽  
Light Propagation ◽  
Three Dimensional

scholarly journals Enhanced Optical Transmission Mediated by Localized Plasmons in Anisotropic, Three-Dimensional Nanohole Arrays

Nano Letters ◽  
2010 ◽  
Vol 10 (8) ◽  
pp. 3173-3178 ◽  
Author(s):  
Jiun-Chan Yang ◽  
Hanwei Gao ◽  
Jae Yong Suh ◽  
Wei Zhou ◽  
Min Hyung Lee ◽  
...  
Keyword(s):  
Optical Transmission ◽  
Three Dimensional ◽  
Enhanced Optical Transmission ◽  
Nanohole Arrays ◽  
Localized Plasmons

scholarly journals Effect of Nanohole Spacing on the Self-Imaging Phenomenon Created by the Three-Dimensional Propagation of Light through Periodic Nanohole Arrays

2012 ◽  
Vol 116 (37) ◽  
pp. 19958-19967 ◽  
Author(s):  
Mustafa H. Chowdhury ◽  
Nathan C. Lindquist ◽  
Antoine Lesuffleur ◽  
Sang-Hyun Oh ◽  
Joseph R. Lakowicz ◽  
...  
Keyword(s):  
Three Dimensional ◽  
The Self ◽  
Propagation Of Light ◽  
Nanohole Arrays

scholarly journals GEOMETRICAL APPROACH TO LIGHT IN INHOMOGENEOUS MEDIA

2002 ◽  
Vol 17 (11) ◽  
pp. 1543-1558 ◽  
Author(s):  
P. PIWNICKI
Keyword(s):  
Electromagnetic Fields ◽  
Light Propagation ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Flat Space ◽  
Dielectric Medium ◽  
Index Of Refraction ◽  
Geometrical Approach ◽  
Complex Formulation ◽  
Relativistic Approach

Electromagnetism in an inhomogeneous dielectric medium at rest is described using the methods of differential geometry. In contrast to a general relativistic approach the electromagnetic fields are discussed in three-dimensional space only. The introduction of an appropriately chosen three-dimensional metric leads to a significant simplification of the description of light propagation in an inhomogeneous medium: light rays become geodesics of the metric and the field vectors are parallel transported along the rays. The new metric is connected to the usual flat space metric diag[1,1,1] via a conformal transformation leading to new, effective values of the medium parameters [Formula: see text] and [Formula: see text] with [Formula: see text]. The corresponding index of refraction is thus constant and so is the effective velocity of light. Space becomes effectively empty but curved. All deviations from straight-line propagation are now due to curvature. The approach is finally used for a discussion of the Riemann–Silberstein vector, an alternative, complex formulation of the electromagnetic fields.

scholarly journals Characterization of morpho-functional traits in mesophotic corals reveals optimized light capture and photosynthesis

2021 ◽  
Author(s):  
Netanel Kramer ◽  
Jiaao Guan ◽  
Shaochen Chen ◽  
Daniel Wangpraseurt ◽  
Yossi Loya
Keyword(s):  
Light Propagation ◽  
Phenotypic Diversity ◽  
Three Dimensional ◽  
Small Scale ◽  
Light Conditions ◽  
Micro Computed Tomography ◽  
Low Light ◽  
Stylophora Pistillata ◽  
Computed Tomography Scanning ◽  
Light Capture

AbstractThe morphology and skeleton architecture of photosynthetic corals modulates the light capture and functioning of the coral-algal symbiosis on shallow-water corals. Since corals can thrive on mesophotic reefs under extreme light-limited conditions, we hypothesized that microskeletal coral features optimize light capture under low-light environments. Using micro-computed tomography scanning, we conducted a comprehensive three-dimensional (3D) assessment of small-scale skeleton morphology of the depth-generalist coral Stylophora pistillata collected from shallow (5 m) and mesophotic (45 m) depths. We detected a high phenotypic diversity between depths, resulting in two distinct morphotypes, with calyx diameter, theca height, and corallite marginal spacing contributing to most of the variation between depths. To determine whether such depth-specific morphotypes affect coral light capture and photosynthesis on the corallite-scale, we developed 3D simulations of light propagation based on photosynthesis-irradiance parameters. We found that corals associated with shallow morphotypes dissipated excess light through self-shading microskeletal features; while mesophotic morphotypes facilitated enhanced light absorption and photosynthesis under low-light conditions. We conclude that the mesophotic coral architecture provides a greater ability to trap solar energy and efficiently exploit the limited light conditions, and suggest that morphological modifications play a key role in the photoadaptation response to low-light.

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