Results 101 to 110 of about 11,788 (237)

All dielectric etalon based metasurfaces optimized for high FOM refractive index sensing

Scientific Reports
In this study, an all-dielectric etalon-based metasurface composed of TiO2 nanopillars embedded in polydimethylsiloxane is proposed and numerically optimized for high-performance refractive index sensing.
N. Roostaei, S. Almasi Monfared
doaj   +1 more source

All-Dielectric Metasurfaces for Sensing Applications

, 2023
Dielectric metasurfaces are a family of flat-optical components that offer novel approaches to light manipulation, paving the way to exciting new applications. Regardless of the underlying operating theory, realizing such nanometer-sized devices calls for excellent fabrication accuracy, ideally on the sub-10 nm level, especially if resonance conditions
openaire   +2 more sources

Reconfigurable Spoof Plasmonic Skyrmion Electronics for Deformation‐Invariant Multimode Sensing

Advanced Science, EarlyView.
A flexible multimode sensor based on capacitively loaded spoof plasmonic skyrmions enables deformation‐invariant dielectric sensing with ultra‐compact size and high Q‐factor. Near‐equidistant resonances remain stable under shape change and bending, while capacitor loading improves bending robustness and multimode sensitivity, highlighting strong ...
Zengxiang Wang, Xiangzheng Kong, Xiaojun Huang, Ying Tian, Wang Yao, Xia Xiao, Zhuo Li, Yu Luo   +7 more
wiley   +1 more source

High‐Power Terahertz Emission from Picosecond Nano‐Plasma Switching Driven by Secondary Electron Emission Avalanche

Advanced Science, EarlyView.
A nano‐plasma device enables watt‐level on‐chip THz generation through picosecond switching triggered by secondary electron emission avalanche. An ultra‐dense electron sheet initiates nano‐plasma formation within a ∼100 nm gap, driving rapid energy release into an integrated resonator.
Guangyu Sun, Mohammad Rezaei, Yuheng Hu, Guan‐Jun Zhang, Elison Matioli   +4 more
wiley   +1 more source

Multilayer all‐dielectric metasurfaces expanding color gamut

Nanophotonics
Abstract Structural color, arising from the interaction between nanostructures and light, has experienced rapid development in recent years. However, high‐order Mie resonances in dielectric materials often induce unnecessary sub‐peaks, particularly at shorter wavelengths, reducing the vibrancy of colors.
Xin Gu, Jiaqi Li, Zhouxin Liang, Bo Wang, Zhaoxiang Zhu, Yujie Chen   +5 more
openaire   +3 more sources

A Dual‐Channel Synergistic Ultrasensitive Biosensor for Tumor Liquid Biopsy

Advanced Science, EarlyView.
ABSTRACT Liquid biopsy technology, which detects circulating tumor DNA (ctDNA) in cerebrospinal fluid, plays a crucial role in the early diagnosis and precision treatment of gliomas. However, the intrinsically low abundance and rapid clearance of ctDNA pose substantial challenges for conventional analytical techniques, such as droplet digital PCR and ...
Yu Sun, Jing Zhang, Chenqing Liu, Jing Lou, Sihui Wang, Xiangtian Ji, Xiaofang Zhao, Shirui Xu, Jingyu Feng, Bin Liu, Chao Chang, Qinggang Ge, Jun Yang   +12 more
wiley   +1 more source

All-dielectric nonlinear metasurface: from visible to vacuum ultraviolet

npj Nanophotonics
All-dielectric nonlinear metasurfaces have higher damage thresholds and more flexible manipulation of resonant modes. Because of the intrinsic advantages of short-wavelength regions, related research gradually moved from the visible to the vacuum ...
Zhihui Wang, Rong Lin, Jin Yao, Din Ping Tsai   +3 more
doaj   +1 more source

Concurrent Terahertz Spin Excitations and Phase Shift Control in Fe4Nb2O9: A Material for Synergizing Computation and Communication Technologies

Advanced Science, EarlyView.
A multifunctional terahertz (THz) platform is demonstrated, in a model material Fe4Nb2O9, exhibiting a large intrinsic THz phase shift alongside distinct THz magnon excitations in its antiferromagnetic phase. This coexistence of phase modulation and spin dynamics offers a promising pathway toward integrated THz communication and magnonic computation ...
Brijesh Singh Mehra, Karan Datt Sharma, Sanjeev Kumar, Gaurav Dubey, Mitanshi Gupta, Ravi Shankar Singh, Dibakar Roy Chowdhury, Christine Martin, Antoine Maignan, Kiran Singh, Dhanvir Singh Rana   +10 more
wiley   +1 more source

Synthesis of electromagnetic metasurfaces: principles and illustrations

EPJ Applied Metamaterials, 2015
The paper presents partial overview of the mathematical synthesis and the physical realization of metasurfaces, and related illustrative examples.
Achouri Karim, Khan Bakthiar Ali, Gupta Shulabh, Lavigne Guillaume, Salem Mohamed Ahmed, Caloz Christophe   +5 more
doaj   +1 more source

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

Advanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Bing Bing Zhu, Marco Rossi, Giuseppe Castaldi, Shuo Liu, Vincenzo Galdi, Tie Jun Cui   +8 more
wiley   +1 more source