Results 71 to 80 of about 2,375 (203)

Optimizing Metalens Spectral Range - Experimental Study

, 2020
We present a method of optimizing the operating spectral range of a metalens. This is of importance for practical applications, and as a metric for comparing the performance of different metalens ...
Mazurski, N., A. Kristensen, C. Zhou, Engelberg, J., Bar-David, J., Levy, Uriel, Kristensen, A., J. Bar-David, J. Engelberg, Wildes, T., Zhou, C., U. Levy, N. Mazurski, T. Wildes   +13 more
core   +1 more source

Distinct thermal effect on biological tissues using subwavelength ultrasound metalens at megahertz

iScience, 2023
Summary: Ultrasound focusing plays an important role in biomedical therapy and diagnosis. Acoustic metalens has showcased remarkable focusing performance but yet to be implemented to the practical ultrasound therapeutic applications.
Yan Zheng, Chen Li, Chuanxin Zhang, Jiajie He, Xue Jiang, Dean Ta   +5 more
doaj   +1 more source

Metalens‐Enabled Double‐Helix Point Spread Function for Multifunctional Imaging

Advanced Physics Research, EarlyView.
A single metalens is employed to generate a double‐helix point spread function (DH‐PSF). At the design wavelength, the PSF rotation angle varies linearly with depth, while the lobe spacing follows an inverse dependence on axial position. At a fixed depth, the lobe spacing further exhibits a linear dependence on wavelength due to dispersion.
Xuanyu Wu, Xuanguang Wu, Liang Zhou, Bingyan Wei, Sheng Liu, Dandan Wen, Yi Zhang, Jianlin Zhao, Peng Li   +8 more
wiley   +1 more source

Research on inspection method of metalens based on phase-shifting interference

Results in Physics
With the ultra-thin thickness and excellent performance, metalens are bi-dimensional optical elements composed of nanopatterned structures that demonstrate significant potential for various applications such as holography, planar imaging and tomography ...
Wei-Han Li, Zhi-Hao Wang, Cheng-Gang Mo, Yong-Bo Deng, Cheng-Miao Wang, Yu Jiao, Yang Gao, Si-Yuan Yao, Xiaokun Wang, Xin Zhang, Liang Miao, Xin-Dong Chen   +11 more
doaj   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

InfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

Research on Fabrication Techniques and Focusing Characteristics of Metalens

, 2022
Metalenses have recently attracted increased attention due to their remarkable characteristics. The fabrication technology of metalenses has also become an important research direction.
Bowei Yang, Chenhao Ma, Yuegang Fu, Yuhui Zhang, Yuanzhi Zhao   +4 more
core   +1 more source

Endless Single-Mode Photonics Crystal Fiber Metalens for Broadband and Efficient Focusing in Near-Infrared Range

Micromachines, 2021
The advent of the ‘lab-on-fiber’ concept has boosted the prosperity of optical fiber-based platforms integrated with nanostructured metasurface technology which are capable of controlling the light at the nanoscale for multifunctional applications. Here,
Qiancheng Zhao, Jiaqi Qu, Gangding Peng, Changyuan Yu   +3 more
doaj   +1 more source

Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics

Laser &Photonics Reviews, EarlyView.
The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi, Daniele Bonaldo, Simone Dal Zilio, Vittorio Apolloni, Filippo Romanato, Gianluca Ruffato   +5 more
wiley   +1 more source

High-efficiency SOI-based metalenses at telecommunication wavelengths

Nanophotonics, 2022
We demonstrated silicon-on-insulator (SOI)-based high-efficiency metalenses at telecommunication wavelengths that are integrable with a standard 220 nm-thick silicon photonic chip.
Ryu Taesu, Kim Moohyuk, Hwang Yongsop, Kim Myung-Ki, Yang Jin-Kyu   +4 more
doaj   +1 more source

An ultra-thin high-efficiency plasmonic metalens with symmetric split ring transmitarray metasurfaces

Results in Physics, 2023
Metasurface lenses (or metalenses) have aroused great attentions and efforts in the community of metamaterials or metasurfaces due to its ultrathin device dimension and superior focusing performances. High-efficiency transmissive metalenses with an ultra-
Yong-Qiang Liu, Wenqiang Chen, Xuemei Du, Yingchao Shu, Lujun Wu, Zhongru Ren, Hongcheng Yin, Jinhai Sun, Kainan Qi, Yongxing Che, Liangsheng Li   +10 more
doaj   +1 more source