نتایج جستجو برای: nanostructure materials

تعداد نتایج: 439564  

2005
Gonzalo Otero Renaud Caillard José Ángel Martín-Gago Javier Méndez

In our study we combine both principles by reducing the dimensionality of organic materials. We show that we are able to form nanostructures with organic molecules on a surface by means of self-organization processes. To achieve this, we used the nanostructure induced on the Au(111)(22×√3) surface by room temperature deposition of iron (<1ML). Fe-islands are formed at the edges of the reconstru...

2007
CHUNSHENG DU NING PAN

Due to the need for increased power performance, supercapacitors are emerging as an alternative to conventional electric energy storage devices. Because of their unique properties, carbon nanotubes are a promising material for next generation supercapacitors. Specifically, the use of nanotubes to construct supercapacitor electrodes can increases the power density and performance of supercapacit...

Journal: :Advanced materials 2010
Vivian E Ferry Jeremy N Munday Harry A Atwater

This paper reviews the recent research progress in the incorporation of plasmonic nanostructures with photovoltaic devices and the potential for surface plasmon enhanced absorption. We first outline a variety of cell architectures incorporating metal nanostructures. We then review the experimental fabrication methods and measurements to date, as well as systematic theoretical studies of the opt...

Journal: :Small 2007
Aneta J Mieszawska Romaneh Jalilian Gamini U Sumanasekera Francis P Zamborini

There are a variety of methods for synthesizing or fabricating one-dimensional (1D) nanostructures containing heterojunctions between different materials. Here we review recent developments in the synthesis and fabrication of heterojunctions formed between different materials within the same 1D nanostructure or between different 1D nanostructures composed of different materials. Structures cont...

2013
Simel Ayyıldız Elif Hilal Soylu Semra İde Selim Kılıç Cumhur Sipahi Bulent Pişkin Hasan Suat Gökçe

PURPOSE The aim of the study was to evaluate the effect of annealing on the nanostructure and hardness of Co-Cr metal ceramic samples that were fabricated with a direct metal laser sintering (DMLS) technique. MATERIALS AND METHODS Five groups of Co-Cr dental alloy samples were manufactured in a rectangular form measuring 4 × 2 × 2 mm. Samples fabricated by a conventional casting technique (Gr...

Journal: :Nanoscale 2011
Ziming He Guanhong Guai Jing Liu Chunxian Guo Joachim Say Chye Loo Chang Ming Li Timothy Thatt Yang Tan

We present a one-step solvothermal approach to prepare uniform graphene-TiO(2) nanocomposites with delicately controlled TiO(2) nanostructures, including ultra-small 2 nm nanoparticles, 12 nm nanoparticles and nanorods. Using three composites as photoanode materials, the effect of nanostructure of graphene-composited TiO(2) on the performance of dye-sensitized solar cells was investigated, and ...

Journal: :Chemical communications 2014
M Göring A Seifert K Schreiter P Müller S Spange

Amino-functionalized organic-inorganic hybrid materials with a narrow distributed nanostructure of 2-4 nm in size were obtained by means of a template-free and non-aqueous procedure. Simultaneous twin polymerization of novel amino group containing twin monomers with 2,2'-spirobi[4H-1,3,2-benzodioxasiline] has been applied for this purpose. The amino groups of the organic-inorganic hybrid materi...

2014
CAMILLA LINDQVIST Patrik Henriksson Camilla Lindqvist Ergang Wang Zandra George Renee Kroon Christian Müller Teketel Yohannes Olle Inganäs Mats R. Andersson

Polymer solar cells are a promising alternative to more traditional silicon solar cells. This is mainly due to the good solubility of organic semiconductors, which makes it possible to produce large-scale and mechanically flexible devices with roll-to-roll processes. To be able to fully utilise this promising technique the stability of the materials, used in these devices, must be guaranteed. T...

Journal: :ACS nano 2014
Daniel D Hickstein Franklin Dollar Jennifer L Ellis Kyle J Schnitzenbaumer K Ellen Keister George M Petrov Chengyuan Ding Brett B Palm Jim A Gaffney Mark E Foord Stephen B Libby Gordana Dukovic Jose L Jimenez Henry C Kapteyn Margaret M Murnane Wei Xiong

We make direct observations of localized light absorption in a single nanostructure irradiated by a strong femtosecond laser field, by developing and applying a technique that we refer to as plasma explosion imaging. By imaging the photoion momentum distribution resulting from plasma formation in a laser-irradiated nanostructure, we map the spatial location of the highly localized plasma and th...

Journal: :Physical chemistry chemical physics : PCCP 2013
Fengli Su Jianwei Lu Ye Tian Xinbin Ma Jinlong Gong

This paper describes the design, characterization, and utilization of branched TiO2 nanoarrays sensitized with CdS quantum dots as anodes for photoelectrochemical water splitting. The remarkable photocurrent density (∼4 mA cm(-2) at a potential of 0 V versus Ag/AgCl) and high solar to hydrogen efficiency of the materials obtained were ascribed to the novel branched nanostructure and efficient e...

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