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Negative refraction, gain and nonlinear effects in hyperbolic metamaterials
Optics Express, 2013 The negative refraction and evanescent-wave canalization effects supported by a layered metamaterial structure obtained by alternating dielectric and plasmonic layers is theoretically analyzed. By using a transmission-line analysis, we formulate a way to
Christos Argyropoulos +2 more
exaly +2 more sources
Gate-tunable negative refraction of mid-infrared polaritons [PDF]
Science, 2022 Negative refraction provides a platform to manipulate mid-infrared and terahertz radiation for molecular sensing and thermal emission applications. However, its implementation based on metamaterials and plasmonic media presents challenges with optical ...
Hai Hu +13 more
semanticscholar +1 more source
Negative refraction in hyperbolic hetero-bicrystals [PDF]
Science, 2022 We visualized negative refraction of phonon polaritons, which occurs at the interface between two natural crystals. The polaritons—hybrids of infrared photons and lattice vibrations—form collimated rays that display negative refraction when passing ...
A. Sternbach +14 more
semanticscholar +1 more source
Cycloplegic refraction is the gold standard for epidemiological studies
Acta Ophthalmologica, 2015 Ian G Morgan +2 more
exaly +2 more sources
Folia Medica Indonesiana, 2021 Introduction: Management of low vision in pediatric patients with greater result can affect their quality of life than in adult low vision patients.. Retinopathy of Prematurity is the main cause of blindness in children.
Christina Aritonang
doaj +1 more source
Acta Polytechnica, 2021 This paper presents the results of over a year-long experiment dealing with a temperature measurement to calculate the theoretical effect of the atmosphere on the measured zenith angle in engineering surveying.
Tomáš Suk, Martin Štroner
doaj +1 more source
Indian Journal of Ophthalmology, 2023 Purpose: To study the prevalence and determinants of compliance with spectacle wear among school-age children in South India who were given spectacles free of charge under a school vision screening program. Methods: A cross-sectional, descriptive study
Neelam Pawar +5 more
doaj +1 more source
Developing Flipped Classroom-based Mobile Learning Media to Teach Optical Physics
Scientiae Educatia: Jurnal Pendidikan Sains, 2020 The application of flipped classrooms-based M-learning media will make learning more planned and systematic. Therefore, students will be more enthusiastic and independent in the learning process. The study aims to design a flipped classrooms-based mobile
Setya Fery Widyastuti +1 more
doaj +1 more source
Using microwave refraction to determine local inhomogeneities of a rotating plasma
Nukleonika, 2023 To determine the local inhomogeneities of a rotating plasma, the method based on microwave refraction was used. The method is based on spectral and correlation analysis of the reflected signals from the rotating plasma layer at normal and inclined ...
Martseniuk Yurii P. +2 more
doaj +1 more source
Terahertz Metamaterials for Linear Polarization Conversion and Anomalous Refraction [PDF]
Science, 2013 Converting Polarization The conversion of a light signal from one polarization direction to another plays an important role in communication and metrology. The components that are presently used for polarization conversion, however, tend to be relatively
N. Grady +8 more
semanticscholar +1 more source