Results 81 to 90 of about 1,378,833 (339)

Efficient Polarization-Insensitive Complex Wavefront Control Using Huygens’ Metasurfaces Based on Dielectric Resonant Meta-atoms [PDF]

, 2016
Metasurfaces have shown great promise for the control of optical wavefronts, thus opening new pathways for the development of efficient flat optics. In particular, Huygens’ metasurfaces based on all-dielectric resonant meta-atoms have already shown a ...
Katie E. Chong, Lei Wang, I. Staude, Anthony James, J. Dominguez, Sheng Liu, G. Subramania, M. Decker, D. Neshev, I. Brener, Y. Kivshar   +10 more
semanticscholar   +1 more source

Proton Assisted Insensitive Nuclei Cross Polarization [PDF]

Journal of the American Chemical Society, 2007
This Communication presents a solid-state NMR 15N−13C polarization transfer scheme applicable at high B0 and high MAS frequencies, requiring moderate rf powers and mixing time (1−6 ms). The sequence, PAIN-CP, involves the abundant nearby protons in the heteronuclear recoupling dynamics and provides a new tool for obtaining long distance 15N−13C ...
Józef R, Lewandowski, Gaël, De Paëpe, Robert G, Griffin   +2 more
openaire   +2 more sources

Directional Confinement Governed Ion Transport for Efficient Actuation

Advanced Materials, EarlyView.
Structural anisotropy provides an effective means to regulate ion transport in polymer electrolytes. Directionally aligned channels formed by freeze‐drying provide continuous pathways for ion migration, enhancing ion mobility and simultaneously improving the strain and blocking force of ionic actuators.
Yufei Zhang, Qiuchun Lu, Adit Gupta, Sen Wang, Xueyang Wang, Jian Yu, Xuanyi Hu, Daniel Mandler, Pooi See Lee   +8 more
wiley   +1 more source

Stretchable All-Dielectric Metasurfaces with Polarization-Insensitive and Full-Spectrum Response.

ACS Nano, 2019
Mechanically stretching has been an effective way to achieve widely tunable optical response in artificial nanostructures. However, the typical stretchable optical devices produce exactly the reverse effects for two orthogonal linear polarizations ...
Chen Zhang, J. Jing, Yunkai Wu, Yubin Fan, Wenhong Yang, Shuai Wang, Q. Song, S. Xiao   +7 more
semanticscholar   +1 more source

A polarization-insensitive plasmonic photoconductive terahertz emitter [PDF]

AIP Advances, 2017
We present a polarization-insensitive plasmonic photoconductive terahertz emitter that uses a two-dimensional array of nanoscale cross-shaped apertures as the plasmonic contact electrodes. The geometry of the cross-shaped apertures is set to maximize optical pump absorption in close proximity to the contact electrodes.
Xurong Li, Nezih Tolga Yardimci, Mona Jarrahi   +2 more
openaire   +4 more sources

Advances in Bio‐Integrated Edge Computing Systems for Smart and Connected Health

Advanced Materials, EarlyView.
This review explores advances in bio‐integrated edge computing for healthcare, focusing on co‐designing computing, sensing, and energy strategies to overcome integration and power challenges for optimized, decentralized operation. ABSTRACT Recent advances in bio‐integrated healthcare technologies have enabled continuous, high‐resolution monitoring and ...
Gyuwon Kim, Seungwon Yoo, Tae Woog Kang, Yunuo Huang, Woon‐Hong Yeo   +4 more
wiley   +1 more source

Enhanced edge - intrude triangle metamaterial absorber with polarization insensitivity for S, C, X and Ku band applications

Discover Applied Sciences
This paper presents a novel metamaterial absorber designed to function effectively across the S, C, X, and Ku frequency bands (2–18 GHz). The unit cell of the metamaterial absorber is derived from an edge-intruded triangular structure, exhibiting ...
Nandhitha Pauly, Dandhapani R, Viji C, Gopikrishna M   +3 more
doaj   +1 more source

Graphene-Metamaterial Based Tunable Broadband Polarization Insensitive Absorber for Terahertz Antenna Design

IEEE Access
The advent of graphene has opened new avenues for the design of high-performance metamaterial devices, particularly in the realm of electromagnetic absorption applications.
Rummanur Rahad, A. Mohsin, Mohammed Belal Hossain Bhuian, Md. Mosaddequr Rahman   +3 more
semanticscholar   +1 more source

A novel polarization-insensitive semiconductor optical amplifier structure with large 3dB bandwidth

, 2001
A novel approach to achieving a polarization-insensitive semiconductor optical amplifier is presented. The active layer consists of graded tensile strained bulk-like structure.
Shu HY, Tian HL, Wang LF, Dong J, Zhang RY Chinese Acad Sci Inst Semicond Natl Res Ctr Optoelect Technol POB 912 Beijing 100083 Peoples R China., Wang W, Zhou F, Bian J, Zhang RY, Zhu HL   +9 more
core  

Monolithically 3D‐Printed Spectral‐Spatial Meta‐Authenticators

Advanced Materials, EarlyView.
A single height map printed in a low‐index resin by two‐photon lithography encodes multiple visible wavelengths in one metasurface without any polarization optics. A fabrication‐aware optimization folds the printable height levels into the design, so the device is printed as optimized.
Cherry Park, Shiqi Hu, Youngsun Jeon, Junsuk Rho   +3 more
wiley   +1 more source