Results 31 to 40 of about 25,634 (258)

Spatially dispersive metasurfaces [PDF]

, 2017
Natural materials and substances possess a rich variety of electromagnetic properties over the entire electromagnetic spectrum. Despite this diversity, nature does not equip us with a full set of possible material tools for controlling electromagnetic ...
Asadchy, Viktar
core   +1 more source

Hunting for Monolayer Black Phosphorus with Photoluminescence Microscopy

Photonics
Monolayer black phosphorus (BP) holds great promise for naturally hyperbolic polaritons and correlated states in rectangular moiré superlattices. However, preparing and identifying high-quality monolayer BP are challenging due to its instability and high
Chenghao Pan, Yixuan Ma, Quan Wan, Boyang Yu, Shenyang Huang, Hugen Yan   +5 more
doaj   +1 more source

Tunable metasurfaces with nematic liquid crystals

, 2018
Intensive researches in the area of metasurfaces have provided a new insight to obtain flat and compact optical systems. In this letter, we numerically show that, highly efficient tunable beam steering effect in transmission mode is achieved at ...
Giden, Ibrahim Halil, Nazmi Yilmaz, Ahmet Ozer, Ozer, Ahmet, Ibrahim Halil Giden, Fehim Taha Bagci, Hamza Kurt, Yilmaz, Nazmi, Yuzuru Takashima, Bagci, Fehim Taha, Ozdemir, Aytekin, Aytekin Ozdemir, Kurt, Hamza, Takashima, Yuzuru   +13 more
core   +1 more source

A 1-bit electrically reconfigurable metasurface stirrer (ERMS) for improved reverberation chambers

Scientific Reports
We propose an innovative electrically reconfigurable metasurface stirrer (ERMS) designed to significantly enhance the performance of reverberation chambers (RCs).
Yewon Kim, Soojeong Kim, Seungkeun Park, Dongho Kim   +3 more
doaj   +1 more source

Defect‐Templated Phase Engineering in Atomically Thin Metals

Advanced Materials, EarlyView.
Graphene defects are transformed from passive imperfections into programmable templates for phase‐selective growth of atomically thin silver. Plasma‐generated boundary defects favor Ag(1), whereas sp3‐rich zero‐layer graphene promotes Ag(2). This defect‐directed intercalation links local graphene chemistry to crystalline phase, electronic structure ...
Arpit Jain, Boyang Zheng, Sawani Datta, Kanchan Ulman, Jakob Henz, Matthew Wei‐Jun Liu, Van Dong Pham, Wen He, Chengye Dong, Li‐Syuan Lu, Alexander Vera, Nader Sawtarie, Wesley Auker, Ke Wang, Bob Hengstebeck, Zachary W. Henshaw, Shreya Mathela, Maxwell Wetherington, William H. Blades, Kenneth Knappenberger, Ursula Wurstbauer, Su Ying Quek, Ulrich Starke, Shengxi Huang, Vincent H. Crespi, Joshua A. Robinson   +25 more
wiley   +1 more source

Regional proximity effect correction for replicating 28 nm lines/spaces in HSQ as dielectric diffraction gratings with high aspect ratio

Micro and Nano Engineering
With the rapid advances of extreme ultraviolet (EUV) lithography toward ultra-high resolution, characterization technique of EUV resists by interference lithography (IL) for 14-nm node process needs urgent upgrading because of the considerable loss of ...
Qingxin Wu, Wentao Yuan, Qiucheng Chen, Hao Quan, Yifang Chen   +4 more
doaj   +1 more source

Moiré Phase Mapping in Twisted Bilayer Liquid Crystals with Reconfigurable Light Polarization States

Advanced Materials, EarlyView.
Twisted bilayer liquid crystals are developed by vertical stacking assembly of two liquid crystals having designer domains and optical properties. These moiré‐symmetry, twisted liquid crystals demonstrate reconfigurable polarization states, moiré patterns and phases controlled by twist angles, providing a route to design active optical devices for ...
Jordan A. Wilson, Rui Huang, Allen Sun, Zixian Fang, Doreen Mwangombe, Keerthna Naina Rawat, Oliver Jacobs, Zhiwei Li   +7 more
wiley   +1 more source

Abnormal beam steering with kirigami reconfigurable metasurfaces

Nature Communications
Dynamically controlling electromagnetic waves at will is highly desired in many applications, but most previously realized mechanically reconfigurable metasurfaces are of restricted wave-control capabilities due to the limited tuning ranges of structural
Guobang Jiang, Yingying Wang, Ziyu Zhang, Weikang Pan, Yizhen Chen, Yang Wang, Xiangzhong Chen, Enming Song, Gaoshan Huang, Qiong He, Shulin Sun, Jizhai Cui, Lei Zhou, Yongfeng Mei   +13 more
doaj   +1 more source

Transmitted electron exposure in electron beam lithography for double-side patterning of bi-layer metasurfaces on a SiNx membrane

Micro and Nano Engineering
Metasheets, composed of two identical metasurfaces closely aligned to each other within a mode-coupling distance on the two opposite sides of a SiNx membrane, are of unique functionalities for effective modulation of electromagnetic waves by nanoscale ...
Jinyu Guo, Yifei Wang, Hao Quan, Shuoqiu Tian, Qiucheng Chen, Wentao Yuan, Qingxin Wu, Kangping Liu, Yifang Chen, Qiong He, Lei Zhou   +10 more
doaj   +1 more source

Computation‐Less, Bias‐Free, and Ultra‐Broadband Photodetector for On‐Chip Edge Extraction

Advanced Materials, EarlyView.
A computation‐less, bias‐free, and ultra‐broadband photodetector directly converts local optical‐intensity gradients into signed photocurrents through a position‐dependent bi‐directional photoresponse. This intrinsic physical sensing mechanism enables single‐pixel edge extraction from the near‐infrared to the long‐wave infrared at room temperature ...
Jintao Fu, Hao Jiang, Xingsi Liu, Fakun Wang, Yang Peng, Qi Jie Wang, Weibo Gao, Xingzhan Wei, Cheng‐Wei Qiu   +8 more
wiley   +1 more source