Results 81 to 90 of about 10,273 (293)

Liquid Crystal Tunable Metamaterial Absorber

Physical Review Letters, 2013
We present an experimental demonstration of electronically tunable metamaterial absorbers in the terahertz regime. By incorporation of active liquid crystal into strategic locations within the metamaterial unit cell, we are able to modify the absorption by 30% at 2.62 THz, as well as tune the resonant absorption over 4% in bandwidth.
David, Shrekenhamer, Wen-Chen, Chen, Willie J, Padilla   +2 more
openaire   +3 more sources

Spatiotemporal Plasma–Mediated Laser Fabrication of Ultrahigh‐Aspect‐Ratio Nanochannel Arrays for Vertical Perovskite Nanowire Semiconductor Devices

Advanced Functional Materials, EarlyView.
A spatiotemporal plasma–mediated laser processing approach is developed to fabricate ultrahigh–aspect ratio nanochannel arrays and corresponding perovskite nanowire arrays within transparent materials for optoelectronics devices. The laser‐fabricated nanochannels serve as templates for controlled perovskite infiltration and crystallization, enabling ...
Taijin Wang, Lingfeng Wang, Feng Liu, Gary J. Cheng   +3 more
wiley   +1 more source

Theoretical modeling and design of a graphene-based tunable metamaterial perfect absorber for broadband and narrowband terahertz applications

Next Materials
Metamaterial-based perfect absorbers operating in the terahertz range have been a topic of great interest to researchers because of their diverse applications.
Muhammad Hani Mazaheri, Husnul Maab, Arbab Abdur Rahim   +2 more
doaj   +1 more source

Ultra-wideband and Polarization-Insensitive Perfect Absorber Using Multilayer Metamaterials, Lumped Resistors, and Strong Coupling Effects

Nanoscale Research Letters, 2018
We theoretically and experimentally proposed a new structure of ultra-wideband and thin perfect metamaterial absorber loaded with lumped resistances.
Si-Jia Li, Peng-Xin Wu, He-Xiu Xu, Yu-Long Zhou, Xiang-Yu Cao, Jiang-Feng Han, Chen Zhang, Huan-Huan Yang, Zhao Zhang   +8 more
doaj   +1 more source

Block Copolymers: Emerging Building Blocks for Additive Manufacturing

Advanced Functional Materials, EarlyView.
This review addresses how block copolymer (BCP) physics and rheology have led to the widespread use of BCPs in advanced additive manufacturing techniques, with particular emphasis on the untapped potential of these nanostructured materials toward achieving multi‐scale architected materials with unique, programmable material properties.
Alice S. Fergerson, Hemish B. Thakkar, Jiaen Wu, Emily C. Davidson   +3 more
wiley   +1 more source

Tilted Wire Metamaterials Enabling Ultra-Broadband Absorption from Middle to Very Long Infrared Regimes

Photonics
Infrared metamaterial absorbers underpin many entrenched scientific and technical applications, including radiative cooling, energy harvesting, infrared detectors, and microbolometers.
Pan Wang, Chengyu Xiao, Shaowen Chen, Mengqi Zhang, Ya Sun, Haoyu Wang, Jin Zhang, Han Zhou   +7 more
doaj   +1 more source

Broadband reflectionless metasheets: Frequency-selective transmission and perfect absorption

, 2015
Energy of propagating electromagnetic waves can be fully absorbed in a thin lossy layer, but only in a narrow frequency band, as follows from the causality principle.
Asadchy, V. S., Faniayeu, I. A., Khakhomov, S. A., Ra'di, Y., Semchenko, I. V., Tretyakov, S. A.   +5 more
core   +2 more sources

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

Anisotropy-assisted non-scattering coherent absorption of surface plasmon-polaritons

, 2016
The ability to control propagation of electromagnetic guided modes lies at the heart of integrated nanophotonics. Surface plasmon-polaritons are a class of guided modes which can be employed in integrated optical systems.
Baranov, Denis G., Ignatov, Anton I., Nechepurenko, Igor A.   +2 more
core   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

Advanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov, Patrick Fesser, Boris A. Bulgakov, Ulrich S. Schubert   +3 more
wiley   +1 more source