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Nanotechnology / Bio & Medicine news 1234

UCLA researchers design nanomachine that kills cancer cells

April 01, 2008 | User rating: 4.5 / 5 after 49 vote(s) | User comments: 1

Researchers from the Nano Machine Center at the California NanoSystems Institute at UCLA have developed a novel type of nanomachine that can capture and store anticancer drugs inside tiny pores and release them into cancer ...


Manufactured Buckyballs don't harm microbes that clean the environment

April 08, 2008 | User rating: 3.5 / 5 after 12 vote(s) | User comments: 6

Even large amounts of manufactured nanoparticles, also known as Buckyballs, don't faze microscopic organisms that are charged with cleaning up the environment, according to Purdue University researchers.


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 ...


Citrate appears to control buckyball clumping but environmental concerns remain

April 08, 2008 | User rating: 3.9 / 5 after 16 vote(s) | User comments: 1

Fullerenes, also fondly known as buckyballs, are showing an ugly side. Since being discovered in 1985, the hollow carbon atoms have been adapted for nanotechnology and biomedical applications ranging from electronics to carriers ...


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 ...


Nano-sized technology has super-sized effect on tumors

April 03, 2008 | User rating: 4.6 / 5 after 32 vote(s) | User comments: 2

Anyone facing chemotherapy would welcome an advance promising to dramatically reduce their dose of these often harsh drugs. Using nanotechnology, researchers at Washington University School of Medicine in ...


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 ...


Promising new nanotechnology for spinal cord injury

April 02, 2008 | User rating: 4.5 / 5 after 16 vote(s) | User comments: 1

A spinal cord injury often leads to permanent paralysis and loss of sensation below the site of the injury because the damaged nerve fibers can't regenerate. The nerve fibers or axons have the capacity to grow again, but ...


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, ...


Europe spends nearly twice as much as US on nanotech risk research

April 21, 2008 | User rating: 4.3 / 5 after 8 vote(s) | No comments yet

A new analysis by the Project on Emerging Nanotechnologies (PEN) indicates that European nations are investing nearly twice as much as the U.S. in research primarily aimed at addressing the potential risks of nanotechnology. ...


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 ...


Nano-Softball Made of DNA

April 01, 2008 | User rating: 4.3 / 5 after 9 vote(s) | No comments yet

For quite some time, DNA, the stuff our genes are made of, has also been considered the building material of choice for nanoscale objects. A team led by Günter von Kiedrowski at the Ruhr University in Bochum has now made ...


Ivy uses nanoparticles to climb walls, chemists discover

March 26, 2008 | User rating: 4.4 / 5 after 17 vote(s) | User comments: 1

Ivy plants secrete nanoparticles to help them grip walls, US-based chemists have reported.


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