نتایج جستجو برای: layer sheets

تعداد نتایج: 305570  

Journal: :Nano letters 2007
Cristina Gómez-Navarro R Thomas Weitz Alexander M Bittner Matteo Scolari Alf Mews Marko Burghard Klaus Kern

Individual graphene oxide sheets subjected to chemical reduction were electrically characterized as a function of temperature and external electric fields. The fully reduced monolayers exhibited conductivities ranging between 0.05 and 2 S/cm and field effect mobilities of 2-200 cm2/Vs at room temperature. Temperature-dependent electrical measurements and Raman spectroscopic investigations sugge...

Metal coating, metal materials are of two or more layers. The coating metals are widely used in industry. These sheets or saving performance and cost effective solution or both the user. Performance coating metals according to usage in structural applications, settings thermal expansion of the thermo-mechanical control (thermostat), electrical, magnetic, corrosion resistant, flowering and decor...

2017
Angjian Wu Xiaodong Li Jian Yang Changming Du Wangjun Shen Jianhua Yan

Vertical graphene (VG) sheets were single-step synthesized via inductively coupled plasma (ICP)-enhanced chemical vapor deposition (PECVD) using waste lard oil as a sustainable and economical carbon source. Interweaved few-layer VG sheets, H₂, and other hydrocarbon gases were obtained after the decomposition of waste lard oil. The influence of parameters such as temperature, gas proportion, ICP...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1986
E A Evans V A Parsegian

Beginning with the free energy potential for long-range interactions between parallel flat sheets and the mechanical energy of bending those sheets, we have derived an upper bound for repulsion enhanced by thermal undulations of sheets in a multilamellar array. Through a self-consistent (mean-field) potential, we cover the full range of layer separations from close-in to far-apart, where the en...

Journal: :Acta crystallographica. Section C, Crystal structure communications 2009
Evelyne M S Leduc Ronald C Peterson Ruiyao Wang

The structure of synthetic disodium magnesium disulfate decahydrate at 180 K consists of alternating layers of water-coordinated [Mg(H(2)O)(6)](2+) octahedra and [Na(2)(SO(4))(2)(H(2)O)(4)](2-) sheets, parallel to [100]. The [Mg(H(2)O)(6)](2+) octahedra are joined to one another by a single hydrogen bond, the other hydrogen bonds being involved in inter-layer linkage. The Mg(2+) cation occupies...

2007
Karl G. Merkley Corey Ernst Jason F. Shepherd Michael J. Borden

This paper presents methods and applications of sheet insertion in a hexahedral mesh. A hexahedral sheet is dual to a layer of hexahedra in a hexahedral mesh. Because of symmetries within a hexahedral element, every hexahedral mesh can be viewed as a collection of these sheets. It is possible to insert new sheets into an existing mesh, and these new sheets can be used to define new mesh boundar...

Journal: :Journal of the American Chemical Society 2013
Nina I Kovtyukhova Yuanxi Wang Ruitao Lv Mauricio Terrones Vincent H Crespi Thomas E Mallouk

Hexagonal boron nitride (h-BN) is an insulating compound that is structurally similar to graphite. Like graphene, single sheets of BN are atomically flat, and they are of current interest in few-layer hybrid devices, such as transistors and capacitors, that contain insulating components. While graphite and other layered compounds can be intercalated by redox reactions and then converted chemica...

Journal: :international journal of nano dimension 0
t. j. prasanna kumar department of aerospace engineering, pvp siddartha engineering college, vijayawada 520 007, india. s. narendar defence research and development laboratory, kanchanbagh, hyderabad 500 058, india. b. l. v. s. gupta department of aerospace engineering, pvp siddartha engineering college, vijayawada 520 007, india. s. gopalakrishnan 4computational wave mechanics laboratory, department of aerospace engineering, indian institute of science, bangalore 560 012, india.

this paper presents the thermal vibration analysis of double-layer graphene sheet embedded in polymer elastic medium, using the plate theory and nonlocal continuum mechanics for small scale effects. the graphene is modeled based on continuum plate theory and the axial stress caused by the thermal effects is also considered. nonlocal governing equations of motion for this double-layer graphene s...

Journal: :Colloids and surfaces. B, Biointerfaces 2004
E P Kalogianni T Savopoulos T D Karapantsios S N Raphaelides

A dynamic wicking technique is employed for the first time for the determination of the effective mean pore radius of a thin-layer porous food: drum dried pregelatinized starch sheets. The technique consists of measuring the penetration rate of various n-alkanes in the porous matrix of the starch sheets and using this data to calculate the effective pore radius via the Washburn equation. Pore s...

2012
Wei Sun Biao-Chun Zhao Ya-Xi Huang Jin-Xiao Mi

The crystal structure of the title compound, Ce[B(4)O(6)(OH)(2)]Cl, is built from polyborate sheets parallel to the (001) plane. These sheets stack along the [001] direction and are linked by Ce atoms exhibiting an CeO(8)Cl(2) coordination sphere. O-H⋯O and O-H⋯Cl hydrogen bonds additionally stabilize the structural set-up. The polyborate sheet is made up of zigzag borate chains running along t...

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