Category Nanotechnology

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New study reveals molecular mechanism of carbon nanotubes role in arterial thrombosis

Blood platelets are the structural and chemical foundation of blood clotting and they play a vital role in minor injuries when coagulation prevents the loss of blood at the injury site. If the proper function of these platelets gets disturbed, blood clotting can lead to thrombosis, which is a leading cause of death and disability in the developed world. In view of the rapid development of nanotechnology, the impact of the newly engineered nanomaterials as an additional thrombosis risk factor is not yet known but should not be underestimated. In fact, it has been reported that carbon nanotubes induce platelet aggregation and potentiate arterial thrombosis in animal model. However, a mechanism of thrombogenic effects of carbon nanotubes was not known...

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Nanotechnology innovations can improve water purification

(Nanowerk News) Membranes for water purification are used in many applications and different types of membranes are being developed at the moment. No membrane can filter and purify water entirely, but improvements using novel kinds of membranes are made.
In the European Commission-funded project MEMBAQ (Incorporation of Aquaporins in Membranes for Industrial Applications) researchers are taking advantage of a unique structure nature has already created, when they are developing a nanotechnological invention. They are inspired by the cell membranes’ water-transporting channels made up of proteins called aquaporins. Only pure H2O molecules are let through...
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Novel hybrid graphene materials for solar cell applications

The extremely high electron mobility of graphene – under ideal conditions electrons move through it with roughly 100 times the mobility they have in silicon – combined with its superior strength and the fact that it is nearly transparent (2.3 % of light is absorbed; 97.7 % transmitted), make it an ideal candidate for photovoltaic applications. Recent research suggests, though, that doping is a necessity to harvest the full potential of graphene. The challenge then for researchers is to find suitable fabrication techniques for high-quality graphene flakes that exhibit high charge mobilities. Researchers now present a chemical approach towards non-covalently functionalized graphene, which is generated from vastly available and low-priced natural graphite.

Source: http://goo.gl/6gAvP www...

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Touchscreens Made of Carbon – Nanotechnology

Press Release 27.01.2011

Touchscreens are in – although the technology still has its price. The little screens contain rare and expensive elements. This is the reason why researchers at Fraunhofer are coming up with an alternative display made of low-priced renewable raw materials available all over the world. The researchers are presenting touchscreens that contain carbon nanotubes at the nano tech 2011 fair in Tokyo (Hall 5, Stand E-18-11) from February 16-18.

Just touching it slightly with the tips of your fingers is enough. You can effortlessly write, navigate, open menu windows or rotate images on touchscreens. Within fractions of a second your touch is translated into control commands that a computer understands...

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Buckminsterfullerene – buckyball – New Google logo 25 years of Buckminsterfullerene

Buckminsterfullerene - buckyball

A fullerene is any molecule composed entirely of carbon, in the form of a hollow sphere, ellipsoid, or tube. Spherical fullerenes are also called buckyballs, and cylindrical ones are called carbon nanotubes or buckytubes. Fullerenes are similar in structure to graphite, which is composed of stacked graphene sheets of linked hexagonal rings; but they may also contain pentagonal (or sometimes heptagonal) rings.

Buckminsterfullerene - buckyball

The first fullerene to be discovered, and the family’s namesake, was buckminsterfullerene (C60), prepared in 1985 by Richard Smalley, Robert Curl, James Heath, Sean O’Brien, and Harold Kroto at Rice University. The name was an homage to Richard Buckminster Fuller, whose geodesic domes it resembles.

Fullerenes have since been found to occur (if rarely) in nature.[1]

The discovery of...

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