Results 61 to 70 of about 429,956 (192)

Recent Advances on Self‐Powered Metal Halide Perovskite Photodetectors

open access: yesEcoEnergy, EarlyView.
This review outlines that metal halide perovskites, with high absorption coefficient and carrier mobility, enable self‐powered photodetectors. These devices operate without external power, with improvements via structural optimization, film engineering, and defect passivation, showing promise in smart sensors and Internet of Things applications ...
Guoqing Xiong   +5 more
wiley   +1 more source

Optometría clínica, desde la práctica hacia la teoría [PDF]

open access: yes, 2018
La comunicación se presenta en estas Jornadas Docentes versa sobre la inversión de secuencia de actividades en una clase (flipped Classroom, Flipped Learning o clase invertida) (Barnett & Society for Research into Higher Education., 2005) de una ...
Sánchez González, José María
core   +1 more source

Depolarization‐Based Multimodal Optical Imaging of Carious Lesions

open access: yesJournal of Biophotonics, EarlyView.
Occlusal caries is visualized using non‐ionizing imaging techniques, including polarization‐sensitive OCT (PS‐OCT). The image collection captures different stages of lesion development and supports the interpretation of optical signals by comparison with histology.
Julia Grundmann   +7 more
wiley   +1 more source

Tomografia de coerência óptica em pacientes com retinopatia da prematuridade [PDF]

open access: yes, 2007
PURPOSE: To describe morphological features of the macula in patients with retinopathy of prematurity. METHODS: Twelve premature babies with retinopathy of prematurity grades I, II and III underwent dilated fundus examination and optical coherence ...
Baba, Natalia Tamie   +6 more
core   +2 more sources

Mini‐Review: Angular Scattering and Directional Effects in Tip‐Enhanced Raman Spectroscopy

open access: yesJournal of Raman Spectroscopy, EarlyView.
Mini‐review: Angular scattering and directional effects in tip‐enhanced Raman spectroscopy. Felix Schneider, David Baschnagel, Tim Parker, Yang Zhao, Alfred J. Meixner*, Dai Zhang*. This mini‐review examines angular scattering and directional effects in tip‐enhanced Raman spectroscopy (TERS), emphasizing their importance for quantitative interpretation
Felix Schneider   +5 more
wiley   +1 more source

Lente intraocular multifocal refractiva con calidad óptica optimizada en un rango de foco y procedimiento para obtenerla [PDF]

open access: yes, 2012
La presente invención describe una lente intraocular multifocal refractiva con geometría asférica en ambas superficies de tal forma que el mapa de potencia óptica local de la lente, en combinación con la cornea, tiene una zona central de potencia
Barbero, Sergio   +3 more
core  

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

open access: yesLaser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil   +6 more
wiley   +1 more source

Uma abordagem histórica da reflexão e da refração da luz

open access: yesRevista Brasileira de Ensino de Física
Este trabalho apresenta uma proposta de ensino dos fenômenos da reflexão e da refração da luz a partir de uma abordagem histórica da ciência. Essa abordagem histórica é fundamentada em cinco pilares: estudos em história da óptica, a experimentação ...
Daniel Ortega, Breno Arsioli Moura
doaj   +1 more source

Topological Photonic Devices and Circuits at Terahertz Frequencies

open access: yesLaser &Photonics Reviews, EarlyView.
This review examines how 3D topological insulators and emerging topological photonic phases enable robust, low‐loss and defect‐immune terahertz devices. Fundamental properties, device implementations and topological transport mechanisms are surveyed, revealing new opportunities for reconfigurable, high‐performance THz components and scalable ...
Samane Kalhor   +3 more
wiley   +1 more source

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