Results 301 to 310 of about 10,952,065 (350)

Chiroptical Properties of Symmetric Double, Triple, and Multiple Helicenes.

Chemical Reviews, 2021
Helicenes have attracted considerable attention due to their inherent helical chirality and extended π-conjugation. Recently, rapid progress has been witnessed in the preparation of double, triple, quadruple, quintuple, and sextuple helicenes, where ...
Tadashi Mori
semanticscholar   +1 more source

Double resonance mapping of liquids in porous materials

Magnetic Resonance Imaging, 1991
Abstract A double resonance method to image mixed fluids which fill porous materials is presented. The method exploits the scalar coupling between nuclei of the same molecule and leads to fluid identification with a signal-to-noise ratio greater than in direct imaging of nuclei characterized by low density or low gyromagnetic ratio.
DE LUCA F., CAMPANELLA, Renzo, BIFONE A., MARAVIGLIA B.   +3 more
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Sustainable Double-Network Structural Materials for Electromagnetic Shielding

Nano Letters, 2021
Electromagnetic interference (EMI) shielding materials with excellent EMI shielding efficiency (SE), lightweight property, and superb mechanical performance are vitally important for modern society, but it is still a challenge to realize these performances simultaneously on one material.
Qing-Fang Guan, Zi-Meng Han, Kun-Peng Yang, Huai-Bin Yang, Zhang-Chi Ling, Chong-Han Yin, Shu-Hong Yu   +6 more
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Ultraflexible and Mechanically Strong Double-Layered Aramid Nanofiber-Ti3C2Tx MXene/Silver Nanowire Nanocomposite Papers for High-Performance Electromagnetic Interference Shielding.

ACS Nano, 2020
High-performance electromagnetic interference (EMI) shielding materials with ultraflexibility, outstanding mechanical properties and superior EMI shielding performances are highly desirable for modern integrated electronic and telecommunication systems ...
Zhonglei Ma, Songlei Kang, Jianzhong Ma, Liang Shao, Yali Zhang, Chao Liu, Ajing Wei, X. Xiang, Linfeng Wei, Junwei Gu   +9 more
semanticscholar   +1 more source

Double Bind: On Material Ethics

2018
OLD Architectural ...
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Dirac cone and double zero materials

AIP Conference Proceedings, 2011
Materials with zero permittivity and zero permeability (double zero) possess very interesting wave manipulation characteristics. Systems with Dirac cones in the band structure also possess amazing wave transport properties. These two classes of material are actually related to each other.
C. T. Chan, Xueqin Huang, Yun Lai, Zhi Hong Hang, Huihuo Zheng, Dmitry N. Chigrin   +5 more
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Chiral Material With Tunable Double Plates

IEEE Antennas and Wireless Propagation Letters, 2018
A double slab with chiral structures based on three-segment cranks is analyzed for linearly polarized and normal incident waves. Both slabs are equal and are constituted by a two-dimensional lattice of four same-handedness metallic cranks. The slabs are parallel, with the unit cells perfectly aligned, and each layer is built on a standard FR4 board ...
Gregorio J. Molina-Cuberos, Angel J. Garcia-Collado, Jose Margineda, Ernesto Martin   +3 more
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Double Staining of Plant Materials in Bulk

Stain Technology, 1968
Ovaries and ovules of Oryza sativa and Zea mays were collected between 9-30 and 10-30 AM, fixed in formalin-acetic-alcohol, stained in Delafield's hematoxylin for 2-4 hr, dehydrated through graded ethanol, counterstained for 3-4 hr either in light green, orange G or fast green (0.05-0.1%) at the 1:1 alcohol-xylene stage and embedded. A few ovaries were
openaire   +2 more sources

Silica-layered double hydroxide nanoarchitectured materials

Applied Clay Science, 2019
Abstract This work shows the viability for assembling layered double hydroxides (LDH) containing surfactant anions in its interlayer region, with silicon alkoxides through a sol-gel processes, leading to SiO2-LDH nanoarchitectured materials consisting in delaminated LDH particles assembled to silica nanoparticles.
Meriem Djellali, Pilar Aranda, Eduardo Ruiz-Hitzky   +2 more
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Double Templates Synthesis of Mesoporous Materials

ECS Meeting Abstracts, 2014
In recent years, synthesis and characterization of ordered nanomaterials with high specific surface area have received increasing interest because of their potential applications in catalysis, selective separation and electrochemical devices such as batteries, fuel cells and supercapacitors.
Tong Xue, Jong-Min Lee
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