نتایج جستجو برای: carbon nanostructures

تعداد نتایج: 298477  

Journal: :Langmuir : the ACS journal of surfaces and colloids 2006
Jennifer Q Lu David A Rider Emanuel Onyegam Hai Wang Mitchell A Winnik Ian Manners Qian Cheng Qiang Fu Jie Liu

Iron-containing nanostructures produced from various self-assembled poly(ferrocenylsilane)-block-polysiloxane thin films are catalytically active for the initiation and growth of high density, small diameter carbon nanotubes (CNTs). Moreover, the tube diameter and density can be tuned by adjusting the chain lengths of the block copolymer. Iron-containing nanostructures from poly(ferrocenylmethy...

Journal: :Physical chemistry chemical physics : PCCP 2013
T Andrade-Filho Fabio Furlan Ferreira Wendel Andrade Alves Alexandre Reily Rocha

The self-assembly of short amino acid chains appears to be one of the most promising strategies for the fabrication of nanostructures. Their solubility in water and the possibility of chemical modification by targeting the amino or carboxyl terminus give peptide-based nanostructures several advantages over carbon nanotube nanostructures. However, because these systems are synthesized in aqueous...

2014
Rodrigo A Segura Claudia Contreras Ricardo Henriquez Patricio Häberle José Javier S Acuña Alvaro Adrian Pedro Alvarez Samuel A Hevia

The hybrid structures composed of gold nanoparticles and carbon nanotubes were prepared using porous alumina membranes as templates. Carbon nanotubes were synthesized inside the pores of these templates by the non-catalytic decomposition of acetylene. The inner cavity of the supported tubes was used as nanoreactors to grow gold particles by impregnation with a gold salt, followed by a calcinati...

2017
Domagoj Belić Mostafa M Shawrav Emmerich Bertagnolli Heinz D Wanzenboeck

This work presents a highly effective approach for the chemical purification of directly written 2D and 3D gold nanostructures suitable for plasmonics, biomolecule immobilisation, and nanoelectronics. Gold nano- and microstructures can be fabricated by one-step direct-write lithography process using focused electron beam induced deposition (FEBID). Typically, as-deposited gold nanostructures su...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2010
Gaixia Zhang Shuhui Sun Mihnea Ioan Ionescu Hao Liu Yu Zhong Ruying Li Xueliang Sun

We report a two-step process for the growth/patterning of Ni honeycomb nanostructures on various substrates, such as carbon paper, carbon nanotubes (CNTs), silicon wafers, and copper grids, via the combination of a sputter-coating/patterning technique and a replacement reaction solution method. The morphology, crystallinity, and chemical composition of the honeycombs were analyzed by SEM, TEM, ...

Journal: :Nature nanotechnology 2012
P Schneeweiss M Gierling G Visanescu D P Kern T E Judd A Günther J Fortágh

Dispersion forces are long-range interactions between polarizable objects that arise from fluctuations in the electromagnetic field between them. Dispersion forces have been observed between microscopic objects such as atoms and molecules (the van der Waals interaction), between macroscopic objects (the Casimir interaction) and between an atom and a macroscopic object (the Casimir-Polder intera...

2013
Jeongmin Lim Sang Yeoul Ryu Jeonghun Kim Yongseok Jun

This study describes a systematic approach of TiO2/carbon black nanoparticles with respect to the loading amount in order to optimize the catalytic ability of triiodide reduction for dye-sensitized solar cells. In particular, the cell using an optimized TiO2 and carbon black electrode presents an energy conversion efficiency of 7.4% with a 5:1 ratio of a 40-nm TiO2 to carbon black. Based on the...

Computational methods can play a significant role in characterization of the carbon-based nanocomposites by providing simulation results. In this paper, we prepared a brief review of the mechanical properties of carbon nanotubes (CNTs), Graphene, and coiled carbon nanotube (CCNTs) reinforced nanocomposites. Varies simulation studies in mechanical properties of nanocomposites including represent...

2014
I. Suelves R. Utrilla D. Torres S. de Llobet J. L. Pinilla M. J. Lázaro Miguel Luesma

Polymer-based composites have been prepared using different concentrations of nanostructured carbons (NCs), produced by catalytic decomposition of methane (CDM). Four carbonaceous nanostructures were produced using different catalysts (with Ni and Fe as active phases), in a rotary bed reactor capable of producing up to 20 g of carbon per hour. The effect of nanostructured carbon on the thermal ...

Journal: :Chemical communications 2014
Gloria Modugno Zois Syrgiannis Aurelio Bonasera Mauro Carraro Gabriele Giancane Ludovico Valli Marcella Bonchio Maurizio Prato

A novel bis-pyrene tweezer anchored on a rigid polyoxometalate scaffold fosters a unique interplay of hydrophobic and electrostatic supramolecular interactions, to shape carbon nanostructures (CNSs)-based extended architectures.

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