Results 51 to 60 of about 1,160,481 (309)

Strongly nonexponential time-resolved fluorescence of quantum-dot ensembles in three-dimensional photonic crystals [PDF]

, 2007
We observe experimentally that ensembles of quantum dots in three-dimensional (3D) photonic crystals reveal strongly nonexponential time-resolved emission.
A. Femius Koenderink, A. Floris van Driel, Ivan S. Nikolaev, K. H. Drexhage, Peter Lodahl, Willem L. Vos   +5 more
core   +6 more sources

In-situ growth of SiC nanowires@carbon nanotubes on 3D printed metamaterial structures to enhance electromagnetic wave absorption

Materials & Design, 2021
Impedance matching and attenuation principles are decisive for electromagnetic wave (EMW) absorption materials to achieve wider absorption bandwidth and higher strength absorption.
Hui Mei, Wenqiang Yang, Xing Zhao, Li Yao, Yongtao Yao, Chao Chen, Laifei Cheng   +6 more
doaj   +1 more source

Preparation and property of epoxy composites reinforced by three-dimensional graphene-pyrrole aerogel

Cailiao gongcheng, 2022
Lightweight and cellular-structured graphene-pyrrole (G-P) aerogels /epoxy composites were prepared basing on the three-step fabrication process which involving infiltration of epoxy resin into G-P aerogels under vacuum atmosphere.
WANG Mu, ZENG Xiamao, MIAO Xia, WEI Haoguang, ZHOU Shiming, FENG Anchao   +5 more
doaj   +1 more source

Highly Conductive PDMS Composite Mechanically Enhanced with 3D-Graphene Network for High-Performance EMI Shielding Application

Nanomaterials, 2020
A highly conductive three-dimensional (3D) graphene network (GN) was fabricated by chemical vapor deposition on a 3D nickel fiber network and subsequent etching process.
Dongyi Ao, Yongliang Tang, Xiaofeng Xu, Xia Xiang, Jingxia Yu, Sean Li, Xiaotao Zu   +6 more
doaj   +1 more source

Near-Tc second-harmonic emission in high-density bulk MgB2 at microwave frequency

, 2006
We discuss the microwave second-harmonic generation in high-density bulk MgB2, prepared by the reactive liquid Mg infiltration technology. The intensity of the harmonic signal has been investigated as a function of temperature and amplitudes of the DC ...
A. Agliolo Gallitto, Amato, Bouquet, Bugoslavsky, Ciccarello, Ciccarello, Ciccarello, Coffey, Coffey, Dahm, Dao, Eliashberg, Entin-Wohlman, Eskildsen, G. Bonsignore, G. Giunchi, Gallitto, Gallitto, Gallitto, Gallitto, Ginzburg, Giunchi, Giunchi, Golubov, Gorkov, Gorkov, Jeffries, Ji, Jin, Khare, Koshelev, Larbalestier, Lee, Lee, M. Li Vigni, Moca, Nefyodov, Oates, Park, Pronin, Samoilova, Trunin, Yip   +42 more
core   +2 more sources

Dielectric properties measurements of brown and white adipose tissue in rats from 0.5 to 10 GHz [PDF]

, 2016
Brown adipose tissue (BAT) plays an important role in whole body metabolism and with appropriate stimulus could potentially mediate weight gain and insulin sensitivity.
Colebeck, E., Hood, A. Z., Maccarini, P. F., Rodrigues, Dario B., Salahi, S., Stauffer, Paul R., Topsakal, E.   +6 more
core   +2 more sources

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

Advanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko, Evelyn Wang, Michael A. Hickner   +2 more
wiley   +1 more source

Multi-Functional Properties of MWCNT/PVA Buckypapers Fabricated by Vacuum Filtration Combined with Hot Press: Thermal, Electrical and Electromagnetic Shielding

Nanomaterials, 2020
The applications of pure multi-walled carbon nanotubes (MWCNTs) buckypapers are still limited due to their unavoidable micro/nano-sized pores structures.
Liyang Cao, Yongsheng Liu, Jing Wang, Yu Pan, Yunhai Zhang, Ning Wang, Jie Chen   +6 more
doaj   +1 more source

Elimination of cracks in self-assembled photonic band gap crystals

, 2003
Thin colloidal crystals (or synthetic opals) composed of Stober silica spheres typically develop cracks when they are utilized to obtain photonic band gap crystals (or inverted opals). We find that by sintering the silica spheres prior to assembly of the
Chabanov, A. A., Jun, Y., Norris, D. J.
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source