The letters are about 100 nanometers in size. That’s roughly a billion times smaller than the block Y on the mountain overlooking BYU’s campus and 1/1000 the width of a human hair.
The team’s larger pursuit is to design nanoscale shapes for electrical circuitry and make tiny – yet inexpensive – computer chips. For more on that endeavor read this story.
DNA origami came on the scene a few years ago when a computer scientist at Caltech wove strands of DNA into smiley faces and other shapes. But until now scientists had to hunt for viruses and microbes whose DNA strands were the right length for the particular task. That’s like building a log cabin without a saw: Instead of cutting the trees down to size, you have to size your cabin to the trees available.
The BYU researchers instead replicate DNA to make strands precisely as long or as short as they need.
BYU chemistry professor Adam Woolley authored the paper with three of his students, Elisabeth Pound, Jeffrey Ashton and Hector Becerril. Ashton is an undergraduate.
“I was blown away when the students were able to make B’s,” Woolley said. “Right angle shapes, that’s one thing. But to make something with curves and multiple intersections, I thought ‘Wow, that is really cool.’”
The work is funded by a $1 million grant from the National Science Foundation to advance the field of nanoelectronics.
“This very quickly went from the initial design of a simple rectangle shape to more sophisticated branching,” Woolley said. “It’s a testament to the quality of graduate students and undergraduates we have here in our department and at BYU in general.”
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The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
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Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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