Results 171 to 180 of about 189,401 (272)

Prevalence of refractive errors in children of Puerto Rico. [PDF]

open access: yesInt J Ophthalmol, 2023
Santiago HC   +7 more
europepmc   +1 more source

Refractive errors in patients with newly diagnosed diabetes mellitus

open access: green, 1969
Abdülhekim Yarbağ   +4 more
openalex   +1 more source

Selective Directional Enhancement in Gold/Perovskite Quantum Dot Metasurfaces

open access: yesAdvanced Optical Materials, EarlyView.
A thin gold layer can selectively enhance the directional radiation of a perovskite quantum dot (QD)1D metasurface by incorporating hybrid plasmonic excitation and redistributing diffraction orders from substrate to cover. The use of template‐assisted self‐assembly techniques enables breakthrough tunability in radiative properties over large areas ...
Mohammad Adnan   +6 more
wiley   +1 more source

<![CDATA[<b>Prevalence of refractive errors and ocular disorders in preschool and school children of Ibipor� - PR, Brazil (1989 to 1996)</b>]]> [PDF]

open access: gold, 2001
Rui Barroso Schimiti   +4 more
openalex   +1 more source

High Fidelity Waveguides Through Vitreous Media Recomposition for Next Generation Photonic Devices

open access: yesAdvanced Optical Materials, EarlyView.
A newly designed aluminosilicate glass enables the fabrication of femtosecond laser‐written optical waveguides with ultra‐low propagation losses of −0.020 dB cm−1 at 1310 nm and −0.037 dB cm−1 at 1550 nm. Raman, Brillouin, and electron microscopy analyses reveal the mechanisms behind refractive index modifications, highlighting the role of glass ...
T Toney Fernandez   +9 more
wiley   +1 more source

Prevalence of refractive errors in teenage high school students in Singapore [PDF]

open access: bronze, 2003
Timothy P. L. Quek   +7 more
openalex   +1 more source

Few Photons Probe Third‐Order Nonlinear Properties of Nanomaterials in a Plasmonic Nanocavity

open access: yesAdvanced Optical Materials, EarlyView.
It is demonstrated that a few photons probe the nonlinear optical properties of different nanomaterials inside a plasmonic nanocavity. A simple analytical model fits the experimental result, which shows a strong dependence on the nanocavity resonance.
Anupa Kumari   +3 more
wiley   +1 more source

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