Results 71 to 80 of about 172,007 (293)

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Nanoparticles of Ni1-x Znx Fe2 O4 used as Microwave Absorbers in the X-band [PDF]

Materials Research, 2019
Ferrites nanoparticles of Ni1-xZnxFe2O4 ferrites with x varying between 0 and 1, in steps of 0.2, were obtained by solution combustion synthesis (SCS) and dispersed in oil paint at the concentrations of 10, 20, 30 and 40% by ferrite weight of ferrite ...
Emília dos Santos Monteiro, Raphael Barata Kasal, Náhrima Chambela Moraes, Gabriel Burlandy Mota de Melo, José Carlos Araujo dos Santos, André Ben-Hur da Silva Figueiredo   +5 more
doaj   +1 more source

Chiral SURMOFs for Vibrational Circular Dichroism: Multiscale Modeling and Experimental Insights

Advanced Functional Materials, EarlyView.
The use of solid‐state vibrational circular dichroism (VCD) for MOFs is still somewhat unexplored, and in this work, it is shown that chiral surface‐anchored MOFs (SURMOFs) grown on CaF2 provide an excellent platform for VCD. Experimental results are validated through multiscale modeling, showing strong agreement across multiple spectroscopic ...
Ana C. Fingolo, Nadine von Coelln, Benedikt Zerulla, Marjan Krstić, Christian Huck, Thomas G. Mayerhöfer, Christoph Krafft, Petra Tegeder, Carsten Rockstuhl, Christof Wöll   +9 more
wiley   +1 more source

Design of wideband metamaterial absorber using circuit theory for X‐band applications

IET Microwaves, Antennas & Propagation, 2023
A broadband metamaterial absorber working in the X‐band is designed and fabricated by 3D printing in this study. This structure is capable of nearly absorbing the power of incoming waves (more than 90%) in the frequency band starting from 7.1 to 13.8 GHz.
Saeed Zolfaghary pour, Ebrahim Chegini, Mojtaba Mighani   +2 more
doaj   +1 more source

Absolute negative refraction and imaging of unpolarized electromagnetic waves by two-dimensional photonic crystals

, 2004
Absolute negative refraction regions for both polarizations of electromagnetic wave in two-dimensional photonic crystal have been found through both the analysis and the exact numerical simulation.
C. Luo, C. Luo, D. R. Smith, H. Kosaka, J. D. Joannopolous, L. M. Li, M. M. Sigalas, M. Notomi, P. Markos, V. A. Podolskiy, V. G. Veselago, Xiangdong Zhang   +11 more
core   +1 more source

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

Advanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan, Wentao Wang, Xiu Liang, Yongliang Zhang, Jie Liu, Yu Bai, Dangyuan Lei   +6 more
wiley   +1 more source

Progress on Self-Healing and Structure-Wave Absorbing Integration of Silicon Carbide Ceramic Matrix Composites

Journal of Aeronautical Materials, 2018
In order to meet the need of high thrust ratio aero engine working in long term thermal oxidation environment and the stealth requirement of key thermal structural components of aero engine, silicon carbide ceramic matrix composites are developed towards
MA Xiaokang, YIN Xiaowei, FAN Xiaomeng, CHENG Laifei, ZHANG Litong   +4 more
doaj   +1 more source

Switchable Thermal Mid‐IR Conducting Polymer Antenna Arrays

Advanced Functional Materials, EarlyView.
This study presents switchable mid‐infrared plasmonic resonances in PEDOT antenna arrays. Their optical extinction peaks can be reversibly switched ‘OFF’ and ‘ON’ by tuning the polaronic charge carrier concentration via the polymer's redox state, offering modulation of optical responses in the thermal mid‐infrared range including around 10 µm ...
Pravallika Bandaru, Mohammad Shaad Ansari, Suraya Kazi, Dongqing Lin, Alexander Yu Polyakov, Magnus P. Jonsson   +5 more
wiley   +1 more source

Synthesis and characterization of Bamboo Activated Carbon (BAC) and Clitoria Ternatea Powder (CTP) for enhanced electromagnetic wave absorption

Case Studies in Chemical and Environmental Engineering
Light, porous, and highly absorbent organic materials have emerged as new renewable and sustainable development materials for electromagnetic wave absorber materials.
Herma Nugroho R A K, Tony Kristiantoro, Yana Taryana, Purnami, Eko Siswanto, I.N.G. Wardana   +5 more
doaj   +1 more source

Subbarrier absorption in a stationary superlattice [PDF]

The calculation of the interband absorption coefficient was carried out in the classical case, when the frequency of light was assumed to bind two miniband subbarrier states of different bands.
Arutyunyan, G. M., Nerkararyan, K. V.
core   +1 more source