Results 141 to 150 of about 11,072 (199)

Visual Neuroplasticity: Modulating Cortical Excitability with Flickering Light Stimulation. [PDF]

J Imaging
Ávila FJ.
europepmc   +1 more source

Phase Control Mechanisms in Metasurfaces: From Static Approaches to Active and Space-Time Modulation. [PDF]

Sensors (Basel)
Haroon M, Kim SW, Choi DY.
europepmc   +1 more source

Cryptic Ontogenetic Changes in the Ventral Coloration of a Color Polymorphic Wall Lizard (Podarcis muralis). [PDF]

J Exp Zool A Ecol Integr Physiol
Abalos J, Bartolomé A, de Lanuza GPI, Aubret F, Font E.   +4 more
europepmc   +1 more source

Multimodal Optical Imaging and Modulation with Simultaneous Electrophysiology Through Smart Dura in Non-Human Primates. [PDF]

Adv Sci (Weinh)
Hong N, Montalvo Vargo S, Hatanaka G, Gong Z, Stanis N, Zhou J, Belloir T, Wang RK, Bair W, Chamanzar M, Yazdan-Shahmorad A.   +10 more
europepmc   +1 more source

Repeated evolution of convergent iridescence in closely-related species of Morpho butterflies living in sympatry

Ledamoisel J, Debat V, Llaurens V.
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Achromatic and super-achromatic zero-order waveplates

Journal of Quantitative Spectroscopy and Radiative Transfer, 2004
Abstract We discuss a brief classification of waveplates including achromatic and super-achromatic ones. Anizotropic properties of polymethylmethacrylat (PMMA) subjected to one-axis stretching are analyzed. The parameters controlling the value of the PMMA birefringence are identified and their typical spectral dependence is discussed.
A.V. Samoylov, V.S. Samoylov, A.P. Vidmachenko, A.V. Perekhod   +3 more
exaly   +3 more sources

Achromatic stigmatism: achromatic Cartesian ovoid

Journal of the Optical Society of America A, 2022
Monochromatic and chromatic aberrations are imaging defects mainly studied from a geometrical optics point of view. These defects are treated through optimization and minimization methods to achieve acceptable performance in optical imaging systems, where the correct choice of glass materials is one of the main challenges.
Alberto Silva-Lora, Rafael Torres
openaire   +2 more sources

On Approximating the Achromatic Number

SIAM Journal on Discrete Mathematics, 2001
Summary: The achromatic number problem is to legally color the vertices of an input graph with the maximum number of colors, denoted \(\psi^*\), so that every two color classes share at least one edge. This problem is known to be NP-hard. For general graphs we give an algorithm that approximates the achromatic number within a ratio of \(O(n\cdot \log ...
Guy Kortsarz, Robert Krauthgamer
openaire   +3 more sources

Achromatizing the Human Eye

Optometry and Vision Science, 1991
ABSTRACT Ocular chromatic dispersion manifests itself as wavelength‐dependent image planes, image sizes, and image positions, and it has been suggested that ocular chromatic aberration is the most important of the eye's optical aberrations.
A, Bradley, X X, Zhang, L N, Thibos
openaire   +2 more sources

Achromatic waveguide lenses

Applied Optics, 1991
An investigation of the chromatic properties of waveguide lenses is described. In general, the focal length of mode-index and Fresnel zone (diffractive) lenses will be a function of wavelength. As a result, these lenses will have high optical quality over only a relatively small wavelength range.
K E, Spaulding, G M, Morris
openaire   +2 more sources