Monthly Archives: July 2009

Single Wall Carbon Nanotubes Properties

Single Wall Carbon Nanotubes  Properties

Single Wall Carbon Nanotubes Properties: Many improvements of basic materials properties can be achieved by using Single Wall Carbon Nanotubes in polymers and metals as fillers. Nanoshel is constantly optimized to enable an adjustment of the desired physical and mechanical properties of the final composite product with extremely low additional quantities of SWCNT. For example, transparent and flexible polymer electrodes, anti-static surface coatings, photovoltaic, sensors and actuators technology as well as printed electronic circuits are possible.

single wall carbon nanotubes

single wall carbon nanotubes

Advantages of Nanoshel Single Wall Carbon Nanotubes  Properties

Single Wall Carbon Nanotubes properties Very good structural integrity (very low defect density). Outstanding mechanical properties, far exceeding those of commercially available materials (steel, carbon or agamid fibres). A fraction of the weight of multi-walled Nanotubes. Outstanding electrical conductivity of metallic Single Wall Carbon Nanotubes, exceeding the conductivity of copper by a factor of 1000. Semi-conducting SWCNT are ideal for sensors applications. Single Wall Carbon Nanotubes are entirely »surface«, the characteristics of the Nanoshel Single Wall Carbon Nanotubes can easily be modified by chemistry or by formation of defects. Single Wall Carbon Nanotubes by Nanoshel are highly flexible macromolecules, they do not exhibit the high rigidity of microcrystalline fibres for an asbestos-like behaviour.

Nanoshel Offers Single Wall Carbon Nanotubes properties and are available for delivery in quantities of up to 1 kg in form of dispersions, pastes or powders. The pilot-line existing at Nanoshel for SWCNT synthesis is able to add new functionalities on the SWCNT within a short time. Upon request, we are able to provide special qualities, for example, purified and / or doped SWCNT. In addition, Nanoshel offers, scientific support for the integration of SWCNT in your products, cooperation in research, – support in the introduction of new, products based on our SWCNT.

We invite you to contact us for Single Wall Carbon Nanotubes information about our company and our capabilities. If you want to buy nanomaterials or discuss Single Wall Carbon Nanotubes,you can mail us at sales@nanoshel.com

single wall carbon nanotubes properties

single wall carbon nanotubes properties

Contact Us for single wall carbon nanotubes properties
From us, you can easily purchase nanomaterials at great prices. Place online order and we will dispatch your order through DHL, FedEx, UPS. You can also request for a quote by mailing us at sales@nanoshel.com Contact: +1 302 268 6163 (US and Europe), Contact: +91-9779550077 (India). We invite you to contact us for further information about our company and our capabilities. At Nanoshel, we could be glad to be of service to you. We look forward to your suggestions and feedback.


Oxide Nanoparticles

Oxide Nanoparticles

Properties of Oxide Nanoparticles : The current knowledge on oxide materials allows to affirm that most of their physical-chemical properties display an acute size dependence. Physical-chemical properties of special relevance in Chemistry are mostly related to the industrial use of oxides as sensors, ceramics, absorbents and/or catalysts. A bunch of novel application within these fields rely on the size-dependence of the optical, (electronic and/or ionic)transport, mechanical and, obviously, surface/chemical (redox, acid/base) properties of oxide nanomaterials. We should stress that size effects in oxide chemistry have frequently two interrelated faces, structural/electronic quantum-size and size-defect or non-stoi chiometry effects. Hence, here we will describe the influence of these two phenomena in the main physic-chemical properties of oxides.

Oxide Nanoparticles

Oxide Nanoparticles

Oxide Nanoparticles

Oxide Nanoparticles play a very important role in many areas of chemistry, physics and materials science. The metal elements are able to form a large diversity of oxide compounds. These can adopt a vast number of structural geometries with an electronic structure that can exhibit metallic, semiconductor or insulator character. In technological applications, oxides are used in the fabrication of microelectronic circuits, sensors, piezoelectric devices, fuel cells, coatings for the passivation of surfaces against corrosion, and as catalysts. In the emerging field of nanotechnology, a goal is to make nanostructures or nano arrays with special properties with respect to those of bulk or single particle species. Oxide nanoparticles can exhibit unique physical and chemical properties due to their limited size and a high density of corner or edge surface sites. Particle size is expected to influence three important groups of basic properties in any material.

Oxide Nanoparticles first one comprises the structural characteristics, namely the lattice symmetry and cell parameters. Bulk oxides are usually robust and stable systems with well-defined crystallographic structures. However, the growing importance of surface free energy and stress with decreasing particle size must be considered: changes in thermodynamic stability associate with size can induce modification of cell parameters and/or structural transformations and in extreme cases the Oxide Nanoparticles can disappear due to interactions with its surrounding environment and a high surface free energy. In order to display mechanical or structural stability, a nanoparticle must have a low surface free energy. As a consequence of this requirement, phases that have a low stability in bulk materials can become very stable in nanostructures.

Oxide Nanoparticles structural phenomenon has been detected in TiO2, VOx, Al2O3 or MoOx oxides. Size-induced structural distortions associated with changes in cell parameter shave been observed, for example, in Oxide Nanoparticles of Al2O3, NiO,Fe2O3,ZrO2,MoO3,23 CeO2,22 and Y2O3.23 As the particle size decreases, the increasing number of surface and interface atoms generates stress/strain and concomitant structuralperturbations.24 Beyond this “intrinsic” strain, there may be also “extrinsic” strain associated with a particular synthesis method which may be partially relieved by annealing or calcinations. Also, non-stoichiometry is a common phenomenon. On the other hand, interactions with the substrate on which the nanoparticles are supported can complicate the situation and induce structural perturbations or phases not seen for the bulk state of the oxides.

We invite you to contact us for Oxide Nanoparticles information about our company and our capabilities. If you want to buy nanomaterials or discuss Oxide Nanoparticles,you can mail us at sales@nanoshel.com

cobalt nanoparticles properties

cobalt nanoparticles properties

Contact Us for Oxide Nanoparticles
From us, you can easily purchase nanomaterials at great prices. Place online order and we will dispatch your order through DHL, FedEx, UPS. You can also request for a quote by mailing us at sales@nanoshel.com Contact: +1 302 268 6163 (US and Europe), Contact: +91-9779550077 (India). We invite you to contact us for further information about our company and our capabilities. At Nanoshel, we could be glad to be of service to you. We look forward to your suggestions and feedback.