Results 101 to 110 of about 233 (127)

AI-Based Metamaterial Design. [PDF]

ACS Appl Mater Interfaces
Tezsezen E, Yigci D, Ahmadpour A, Tasoglu S.   +3 more
europepmc   +1 more source

MEMS Varifocal Optical Elements for Focus Control. [PDF]

Micromachines (Basel)
Liu C, Wang T, Wang X, Chang M, Jian Y, Wang W.   +5 more
europepmc   +1 more source

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Multifocal metalens with a controllable intensity ratio

Optics Letters, 2019
A multifocal metalens is proposed based on the optical metasurface consisting of subwavelength gratings etched on silver film. The larger transmission of grating makes the proposed metalens have high focusing efficiency, and the exquisite design of the metasurface enables the metalens to focus the light at multiple spots with the controllable intensity
Haoran Lv, Xiaoqing Lu, Yuansheng Han, Zhen Mou, Shuyun Teng   +4 more
openaire   +4 more sources

Parallel Polarization Illumination with a Multifocal Axicon Metalens for Improved Polarization Imaging

Nano Letters, 2020
Polarization imaging is an important branch of the microscopy technique that can provide additional information and enhanced contrast. The illumination system of a polarization microscope enables many different polarizations but makes the setup bulky, complicated, and slow.
Chen Chen, Yiqun Wang, Minwei Jiang, Jian Wang, Jian Guan, Baoshun Zhang, Lei Wang, Jie Lin, Peng Jin   +8 more
openaire   +4 more sources

High numerical aperture multifocal metalens based on Pancharatnam–Berry phase optical elements

Applied Optics, 2018
A high numerical aperture multifocal metalens was proposed based on well-designed Pancharatnam-Berry phase optical elements. Both circularly and linearly polarized incident lights could be tightly focused into diffraction-limited focal spots. Right and left circularly polarized focal spots could be realized simultaneously by illuminating a linearly ...
Qinmiao, Chen, Yan, Li, Yanhua, Han, Duo, Deng, Dahai, Yang, Ying, Zhang, Yi, Liu, Jianmin, Gao   +7 more
openaire   +4 more sources

Reprogrammable multifocal THz metalens based on metal–insulator transition of VO2-assisted digital metasurface

Optics Communications, 2020
Abstract Metalenses, which consist of subwavelength metasurfaces, have attracted attention due to their more condensed dimension in comparison with conventional lenses. The limitations of traditional varifocal lenses are apparent, such as the large size and absence of tunability.
Roya Kargar, Kasra Rouhi, Ali Abdolali
openaire   +3 more sources

Two Hundred Nanometer Thin Multifocal Graphene Oxide Metalens for Varying Magnification Broadband Imaging

ACS Nano
Conventional microscopes, which rely on multiple objective lenses for varying magnifications, are bulky, complex, and costly, making them difficult to integrate into compact devices. They require frequent manual adjustments, complicating the imaging process and increasing maintenance burdens.
Guiyuan Cao, Siqi Wang, Wenbo Liu, Huihui Zhang, Jihong Han, Xining Xu, Jingheng Liu, Weisong Zhao, Haoyu Li, Han Lin, Baohua Jia, Shibiao Wei   +11 more
openaire   +4 more sources

Multifocal Metalens-Assisted Correlation Spectroscopy for Measuring Microfluidic Dynamics

ACS Photonics
Siqi Li, Lan Yu, Min Liu, Wenfu Zhang, Peng Gao, Guoxi Wang   +5 more
openaire   +3 more sources

A broadband multifocal metalens in the terahertz frequency range

Optics Communications, 2016
Abstract Metasurfaces, the 2D form of metamaterials with their ability in phase, amplitude and polarization manipulation are widely used in designing optical devices. Efforts to find proper photonic components in the terahertz (THz) range of frequency lead us to adopt metasurfaces as their constituent elements. Here, we conceived a broadband THz lens
Mahdieh Hashemi, Amin Moazami, Mahin Naserpour, Carlos J. Zapata-Rodríguez   +3 more
openaire   +1 more source