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Nanotechnology / Bio & Medicine news 1234

Research measures movement of nanomaterials in simple model food chain

May 31, 2008 | User rating: 4.2 / 5 after 13 vote(s) | User comments: 1

New research in Nature Nanotechnology shows that while engineered nanomaterials can be transferred up the lowest levels of the food chain from single celled organisms to higher multicelled ones, the ...


Stretching DNA Yields Surprise

August 08, 2006 | User rating: 4.3 / 5 after 34 vote(s) | No comments yet

Most of us are familiar with the winding staircase image of DNA, the repository of a biological cell's genetic information. But few of us realize just how tightly that famous double helix is wound.


Molecules autonomously propelled by polymerizing DNA strands

September 06, 2007 | User rating: 4.4 / 5 after 41 vote(s) | No comments yet

Scientists from the California Institute of Technology have fabricated a motor that runs autonomously, and is powered only by the free energy of DNA hybridization. The molecular motor was inspired by bacterial ...


Carbon nanotube injectors probe living cells without damage

June 20, 2007 | User rating: 4.6 / 5 after 55 vote(s) | No comments yet

In order to investigate the processes that go on inside a single human cell—or even specific subcellular compartments—researchers need a device that is small and controlled enough to pass through ...


Carbon-Nanotube Toxicity Test Tricks Scientists

September 05, 2006 | User rating: 4.2 / 5 after 47 vote(s) | No comments yet

Recent research has revealed that a standard cell-viability test may be causing carbon-nanotubes to “fake” toxicity. This work may explain why some studies have concluded that carbon nanotubes – which are being studied for ...


Growing use of nanomaterials spurs research to investigate possible downsides

June 13, 2008 | User rating: not shown ( 4 vote(s) ) | User comments: 1

Potential risks from the use of nanomaterials will be explored by three Arizona State University engineering faculty in a project supported by a $400,000 grant from the U.S.Department of Energy Office of Biological and Environmental ...


Nanowire arrays can detect signals along individual neurons

August 24, 2006 | User rating: 4.3 / 5 after 49 vote(s) | No comments yet

Opening a whole new interface between nanotechnology and neuroscience, scientists at Harvard University have used slender silicon nanowires to detect, stimulate, and inhibit nerve signals along the axons and dendrites of ...


Magnetic nanoparticles: Suitable for cancer therapy?

May 28, 2008 | User rating: not shown ( 2 vote(s) ) | User comments: 1

A measuring procedure developed in the Physikalisch-Technische Bundesanstalt (PTB) can help to investigate in some detail the behaviour of magnetic nanoparticles which are used for cancer therapy.


Quantum Dots Pose Minimal Impact to Cells

July 18, 2006 | User rating: 4.2 / 5 after 22 vote(s) | No comments yet

Nano-sized fluorescent probes that can slip inside living cells and elucidate life’s most fundamental processes, or track the effectiveness of cancer-fighting drugs, are barely noticed by the cells they enter, ...


Sandia work shows live cells influence growth of nanostructures

July 20, 2006 | User rating: 4.3 / 5 after 7 vote(s) | No comments yet

Far above the heads of Earthlings, arrays of single-cell creatures are circling Earth in nanostructures. The sample devices are riding on the International Space Station (courtesy of Sandia National Laboratories ...


Fluorescent nano-barcodes could revolutionize diagnostics

May 22, 2008 | User rating: 4.5 / 5 after 15 vote(s) | No comments yet

A new technology with research and clinical application including the early detection of disease has been invented and developed by University of Queensland researchers.


Nanotechnology in reverse uses cell to calibrate tools

May 15, 2008 | User rating: 4.1 / 5 after 9 vote(s) | No comments yet

Nanotechnology researchers at UC Davis have shown that they can use a red blood cell to calibrate a sensitive instrument, an atomic force microscope.


Researchers synthesize molecule with self-control

May 12, 2008 | User rating: 4.4 / 5 after 15 vote(s) | No comments yet

Plants have an ambivalent relationship with light. They need it to live, but too much light leads to the increased production of high-energy chemical intermediates that can injure or kill the plant.


Breakthrough: Scientists used nanotubes to send signals to nerve cells

May 08, 2006 | User rating: 4.1 / 5 after 95 vote(s) | No comments yet

Texas scientists have added one more trick to the amazing repertoire of carbon nanotubes -- the ability to carry electrical signals to nerve cells.


Team develops DNA switch to interface living organisms with computers

October 25, 2006 | User rating: 4.3 / 5 after 75 vote(s) | No comments yet

Researchers at the University of Portsmouth, UK, have developed an electronic switch based on DNA - a world-first bio-nanotechnology breakthrough that provides the foundation for the interface between living organisms and ...


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