Results 41 to 50 of about 1,347 (193)

Achromatic acoustic generalized phase-reversal zone plates

New Journal of Physics, 2022
We report an achromatic acoustic generalized phase-reversal zone plate by harnessing the response of dipole and monopole, which eliminate the chromatic aberration of conventional zone plates.
Gaokun Yu, Xinyu Zou, Peifeng Wang
doaj   +1 more source

Um experimento simples usado na produção de placas de zonas de Fresnel

Revista Brasileira de Ensino de Física
Neste trabalho propomos um experimento simples que tem por finalidade auxiliar no aprendizado dos fenômenos de interferência e difração da luz. Após uma análise pertinente da teoria de Fresnel da difração, os conhecimentos são aplicados na compreensão do
Márcia Muller, Jean Carlos Cardozo da Silva, José Luís Fabris   +2 more
doaj   +1 more source

Terahertz metasurface zone plates with arbitrary polarizations to a fixed polarization conversion

Opto-Electronic Science, 2022
Metasurfaces that can realize the polarization manipulation of electromagnetic waves on the sub-wavelength scale have become an emerging research field. Here, a novel strategy of combining the metasurface and Fresnel zone plate to form a metasurface zone
Zhen Yue, Jitao Li, Jie Li, Chenglong Zheng, Jingyu Liu, Guocui Wang, Hang Xu, Mingyang Chen, Yating Zhang, Yan Zhang, Jianquan Yao   +10 more
doaj   +1 more source

Fabrication of large-scale micro-structures by two-photon polymerization with a long-stroke precision stage

Advances in Mechanical Engineering, 2017
This article demonstrates the fabrication of large-scale micro-structures by two-photon polymerization with an integrated long-stroke precision stage. We first design a three-axial stage that combines a piezoelectric transducer stage and a stepper-motor ...
Fu-Cheng Wang, Kuo-An Wang, Tien-Tung Chung, Jia-Yush Yen   +3 more
doaj   +1 more source

Focusing performances of high numerical aperture Fresnel zone plates under different immersion media

AIP Advances, 2023
The focusing performances of high-numerical-aperture (NA) Fresnel zone plates (FZP) under different immersion media are investigated by combining the vectorial angular spectrum (VAS) theory and the finite-difference time-domain method.
Qiang Liu, Xianqing Zhou, Peng Cao, Xingming Wu, Wenshuai Liu, Xiaomin Yao, Junli Wang, Longda Wang   +7 more
doaj   +1 more source

Multiple beam steering using dynamic zone plates on a micromirror array [PDF]

, 2018
Three dimensional laser beam steering of focal position has been demonstrated using a single optical device – a DMD micro-mirror array. Laser beam focus position is controlled using dynamically adjustable zone plates.
Benton, David
core   +1 more source

Study of the Off-Axis Fresnel Zone Plate of a Microscopic Tomographic Aberration

Sensors, 2022
A tomographic microscopy system can achieve instantaneous three-dimensional imaging, and this type of microscopy system has been widely used in the study of biological samples; however, existing chromatographic microscopes based on off-axis Fresnel zone ...
Lin Yang, Zhenyu Ma, Siqi Liu, Qingbin Jiao, Jiahang Zhang, Wei Zhang, Jian Pei, Hui Li, Yuhang Li, Yubo Zou, Yuxing Xu, Xin Tan   +11 more
doaj   +1 more source

Common path interferometer using Fresnel zone plates [PDF]

, 1963
A new kind of interferometer for testing any unit magnification optical system is described. The method utilizes diffraction beam splitting and involves the use of two identical Fresnel zone plates, one by the side of the other. The interference patterns
Murty, M. V. R. K.
core   +1 more source

Fabrication of Fresnel plates on optical fibres by FIB milling for optical trapping, manipulation and detection of single cells

Scientific Reports, 2017
The development of economical optical devices with a reduced footprint foreseeing manipulation, sorting and detection of single cells and other micro particles have been encouraged by cellular biology requirements.
Rita S. Rodrigues Ribeiro, Pabitra Dahal, Ariel Guerreiro, Pedro A. S. Jorge, Jaime Viegas   +4 more
doaj   +1 more source

Evolution of OLED Lamination Technology With Development of Display Form Factors

Advanced Materials Technologies, EarlyView.
This review evaluates the evolution of organic light‐emitting diode (OLED) lamination technologies alongside advancing display form factors. It contrasts optically clear adhesives and resins, highlighting uniformity control for rigid screens, bubble‐free optimization for bended architectures, and visible‐light curing for foldable layers.
Kwan‐Young Han, Ji‐Hoon Park
wiley   +1 more source