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Articles tagged with: ‘iron oxide‘

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Researchers found a way to direct stem cells by magnets

By Maja Bosanac
16 July 2013

iron-in-cellsCollaboration between researchers at Emory University and Georgia Institute of Technology (Georgia Tech) resulted in the development of stem cells that can be directed by magnetic fields. Stem cells could soon be intravenous injected into the patient to treat heart diseases and vascular problems. By loading stem cells with superparamagnetic iron oxide nanoparticles (SPIOs), scientists… »

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Improving hydrogen production with a bit of rust

By Damir Beciri
24 May 2013

duke-hydrogen-productionWhile hydrogen can be found nearly everywhere in the environment and it can be used to produce power, producing and collecting molecular hydrogen with current methods isn’t competitive with other sources of energy. Duke University engineers have developed a novel method for producing clean hydrogen, which could prove essential to weaning society off of fossil… »

Bionics»

Pine cones inspire new materials that change their shape according to stimuli

By Damir Beciri
21 April 2013

pineconesInspired by the ability of pine cones to close their scales when wet and open them again once they have dried out, a group of researchers at ETH Zurich devised a new method to produce a variety of composite materials that are able to change their shape to a pre-programmed shape after being influence by… »

Bionics»

Algal protein gives boost to solar hydrogen generation

By Damir Beciri
One Comment22 December 2011

cyanobacteria-pecPhoto-electrochemical cells (PEC) use sunlight to electrochemically split water in order to generate hydrogen in direct manner, and they are usually made of semiconducting materials. Researchers from Switzerland and US used nature as inspiration to optimize the process by developing iron oxide electrodes that are conjugated with a protein from blue-green algae (also known as… »

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Artificial leaf uses solar energy to split the oxygen and hydrogen in water

By Damir Beciri
One Comment2 October 2011

mit-artificial-leafResearchers at the Massachusetts Institute of Technology (MIT) have produced something they’re calling an “artificial leaf” – a silicon solar cell with different catalytic materials bonded onto its two sides which enable it to produce oxygen and hydrogen. Once the material is placed under water and illuminated by sunlight, it needs external sources of power… »

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Ferropaper – low-cost technology for small motors and robots

By Damir Beciri
8 January 2010

ziaie-ferropaperAfter writing about ferrofluid sculptures and Stanford scientists that combined carbon nanotubes and paper, in this article we’re going to write about researchers at Purdue University who have created a magnetic ferropaper. The material is made by impregnating ordinary paper (even newsprint) with a mixture of mineral oil and “magnetic nanoparticles” of iron oxide. The… »