Results 21 to 30 of about 769 (50)

Investigations of generalized Pancharatnam-Berry phase in all-dielectric metasurfaces

open access: yesResults in Physics, 2023
As one of the main approaches to implement phase gradient in metasurfaces, Pancharatnam-Berry (PB) phase originated from the spin–orbit interaction (SOI) of light has attracted enormous interest during the past several decades.
Qingrong Deng   +7 more
doaj  

Understanding Photomechanical Behavior of Liquid Crystalline‐Based Actuators

open access: yesMacromolecular Materials and Engineering, 2023
Liquid crystalline‐based actuators containing azobenzene photoswitches have been used to demonstrate light‐responsive motion in soft actuator systems.
Jasleen Lall, Hans Zappe
doaj   +1 more source

Film Thickness-Profile Measurement Using Iterative Peak Separation Structured Illumination Microscopy

open access: yesApplied Sciences, 2021
The surface and thickness distribution measurement for transparent film is of interest for electronics and packaging materials. Structured illumination microscopy (SIM) is a prospective technique for measuring film due to its high accuracy and efficiency.
Kejun Yang   +5 more
doaj   +1 more source

Designing high-efficiency extended depth-of-focus metalens via topology-shape optimization

open access: yesNanophotonics, 2022
Longitudinal optical field modulation is of critical importance in a wide range of applications, including optical imaging, spectroscopy, and optical manipulation.
Zheng Yuhan   +8 more
doaj   +1 more source

Terahertz Sensing for R/S Chiral Ibuprofen via All-Dielectric Metasurface with Higher-Order Resonance

open access: yesApplied Sciences, 2021
A terahertz (THz) all-dielectric metasurface with crescent cylinder arrays for chiral drug sensing has been demonstrated. Through the multipole expansion method, we theoretically found that breaking the symmetry of the metasurface can excite higher-order
Weinan Shi   +6 more
doaj   +1 more source

Multifunctional Janus metasurfaces achieving arbitrary wavefront manipulation at dual frequency

open access: yesMaterials & Design, 2022
Metasurface with simultaneous control of amplitude, phase, and polarization of electromagnetic (EM) waves has drawn great attention in modern optics and photonics.
Ziyi Tang   +13 more
doaj  

A Microstructural and Compositional Study of ε-Fe2O3 Crystals in the Hare’s Fur Jian Ware

open access: yesCrystals, 2022
The Jian kilns in the present-day Jianyang County of Fujian Province are well known for their thick and lustrous black-glazed porcelain production. The hare’s fur (HF) glazed Jian wares characterized by radial fur-like strips, as one of the most typical ...
Shiqian Tao   +4 more
doaj   +1 more source

Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging

open access: yesOpto-Electronic Advances, 2020
Dispersion control is crucial in optical systems, and chromatic aberration is an important factor affecting imaging quality in imaging systems. Due to the inherent property of materials, dispersion engineering is complex and needs to trade off other ...
Dou Kaihua   +6 more
doaj   +1 more source

High-resolution polarization-sensitive optical coherence tomography and optical coherence tomography angiography for zebrafish skin imaging

open access: yesJournal of Innovative Optical Health Sciences, 2021
Zebrafish is an important animal model, which is used to study development, pathology, and genetic research. The zebrafish skin model is widely used in cutaneous research, and angiogenesis is critical for cutaneous wound healing.
Di Yang   +4 more
doaj   +1 more source

Spin‐Decoupled Beam Steering with Active Optical Chirality Based on Terahertz Liquid Crystal Chiral Metadevice

open access: yesAdvanced Materials Interfaces, 2023
Broadband terahertz (THz) chirality and wavefront manipulation play important roles in wireless communication, imaging, and radar systems. In this work, by integrating liquid crystal (LC) into a dielectric metasurface, the gradient phase distribution ...
Fei Fan   +6 more
doaj   +1 more source

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