New gene therapy procedures, DNA-based sensors, and other medical applications may be possible using a new method to initiate and control chemical reactions on DNA strands, developed by a team of chemists at the U.S. Department of Energys Argonne National Laboratory. The new technology uses specially designed nanometer-sized semiconductors--less than a billionth of an inch in size.
The technology is based on the groups discovery of "conductive linkers"--small organic molecules that connect the electronic properties of semiconductors to biological or organic molecules. The scientists have used conductive linkers to connect strands of DNA to titanium dioxide crystals measuring only 4.5 nanometers in diameter (a nanometer is about 10,000 times narrower than a human hair).
In the presence of light, a titanium dioxide nanocrystal acts as a semiconductor, generating strong oxidizing power that attacks organic molecules in the same uncontrollable way that laundry bleach attacks all colors in the wash. The researchers found that by using different conductive linkers they can selectively control oxidation.
Katie Williams | EurekAlert!
A new view of microscopic interactions
02.07.2020 | University of Missouri-Columbia
02.07.2020 | Max Delbrück Center for Molecular Medicine in the Helmholtz Association
Empa researchers have succeeded in applying aerogels to microelectronics: Aerogels based on cellulose nanofibers can effectively shield electromagnetic radiation over a wide frequency range – and they are unrivalled in terms of weight.
Electric motors and electronic devices generate electromagnetic fields that sometimes have to be shielded in order not to affect neighboring electronic...
A promising operating mode for the plasma of a future power plant has been developed at the ASDEX Upgrade fusion device at Max Planck Institute for Plasma...
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"Automation in Aerospace Industry @ Fraunhofer IFAM"
The Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM l Stade is presenting its forward-looking R&D portfolio for the first time at...
With an X-ray experiment at the European Synchrotron ESRF in Grenoble (France), Empa researchers were able to demonstrate how well their real-time acoustic monitoring of laser weld seams works. With almost 90 percent reliability, they detected the formation of unwanted pores that impair the quality of weld seams. Thanks to a special evaluation method based on artificial intelligence (AI), the detection process is completed in just 70 milliseconds.
Laser welding is a process suitable for joining metals and thermoplastics. It has become particularly well established in highly automated production, for...
A research team from the Max Planck Institute for the Structure of Dynamics (MPSD) and the University of Oxford has managed to drive a prototypical antiferromagnet into a new magnetic state using terahertz frequency light. Their groundbreaking method produced an effect orders of magnitude larger than previously achieved, and on ultrafast time scales. The team’s work has just been published in Nature Physics.
Magnetic materials have been a mainstay in computing technology due to their ability to permanently store information in their magnetic state. Current...
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