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Archive for the ‘nanotechnology’ category: Page 257

Jan 5, 2017

Combining catalytic and electrical contact edge-effects to engineer the transport properties of nanocontacts to nanowires

Posted by in category: nanotechnology

Nice.


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Become a Spotlight guest author! Have you just published a scientific paper or have other exciting developments to share with the nanotechnology community? Here is how to publish on nanowerk.com.

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Dec 30, 2016

To produce biopharmaceuticals on demand, just add water

Posted by in categories: biotech/medical, nanotechnology

My infomercial of the day — “just ad water and Ta-dah, you have a vaccine!”

http://thejerseytomatopress.com/stories/To-produce-biopharma…water,1851


Researchers at MIT and other institutions have created tiny freeze-dried pellets that include all of the molecular machinery needed to translate DNA into proteins, which could form the basis for on-demand production of drugs and vaccines. Image: Christine Daniloff/MIT. Antimicrobial peptide illustration by Ymahn/Wikimedia Commons.

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Dec 29, 2016

Researchers Develop Preprogrammed Silk-Based Solid Materials with Pre-Designed Functions

Posted by in categories: biotech/medical, nanotechnology

Luv this.


Tufts University engineers have created a new format of solids made from silk protein that can be preprogrammed with biological, chemical, or optical functions, such as mechanical components that change color with strain, deliver drugs, or respond to light, according to a paper published online this week in Proceedings of the National Academy of Sciences (PNAS).

Using a water-based fabrication method based on protein self-assembly, the researchers generated three-dimensional bulk materials out of silk fibroin, the protein that gives silk its durability. Then they manipulated the bulk materials with water-soluble molecules to create multiple solid forms, from the nano- to the micro-scale, that have embedded, pre-designed functions.

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Dec 28, 2016

Nano-sized discs teach your body to kill cancer cells

Posted by in categories: biotech/medical, nanotechnology

PanARMENIAN.Net — In the future, getting customized cancer treatments might just be a matter of injecting virtually invisible discs into your body, Engadget said.

University of Michigan scientists have had early success testing 10nm “nanodiscs” that teach your body to kill cancer cells. Each disc is full of neoantigens, or tumor-specific mutations, that tell your immune system’s T-cells to recognize those neoantigens and kill them. When you pair them up with immune checkpoint inhibitors (which boost the T-cells’ responses), they can not only wipe out existing tumors, but prevent them from reemerging later.

This testing has been limited to mice so far, but it’s promising. The nanodiscs took 10 days to eliminate tumors, and they shut down identical tumors when they were reinserted 70 days later. For the researchers, the big challenge right now is scaling the tests to see if they still hold up with larger animals. If the approach proves successful with humans, the days of generic cancer solutions might be limited — so long as doctors could get a sample of your cancer, they’d stand a realistic chance of eliminating the disease, Engadget said.

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Dec 26, 2016

Self-Assembly Process Strikes Perfect Balance for Making Atoms-Wide Nanowires

Posted by in categories: nanotechnology, particle physics

Nice.


Diamondoids build smallest possible copper-sulfur nanowires, could construct many other nanomaterials.

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Dec 26, 2016

Ultra-Small Nanocavity Advances Technology for Quantum-Based Data Encryption

Posted by in categories: encryption, nanotechnology, quantum physics

What’s next? Nanocavities in a diamond for small devices.


Researchers have developed a new type of light-enhancing optical cavity that is only 200 nanometers tall and 100 nanometers across. Their new nanoscale system represents a step toward brighter single-photon sources, which could help propel quantum-based encryption techniques under development.

Quantum encryption techniques, which are seen as likely to be central to future data encryption methods, use individual photons as an extremely secure way to encode data. A limitation of these techniques has been the ability to emit photons at high rates. “One of the most important figures of merit for single-photon sources is brightness — or collected photons per second — because the brighter it is, the more data you can transmit securely with quantum encryption,” said Yousif Kelaita of Stanford University.

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Dec 24, 2016

Nanotechnology in Healthcare: Getting Smaller and Smarter

Posted by in categories: biotech/medical, nanotechnology

https://youtube.com/watch?v=1ACoUCm8aTA

I believe nanodevices will operate as drug delivery systems, cancer treatment tools or tiny surgeons. Let me introduce you nanotechnology in healthcare.

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Dec 21, 2016

The perfect Christmas gift? A nanoscale snowman

Posted by in categories: evolution, food, nanotechnology, particle physics

Happy Holidays; happy end of the year, happy launch of next year, happy snow days, happy hot chocolate day, etc. Nonetheless, my gift to you this year is a Nanoscale Snowman.


Would a jewel-encrusted snowman make the perfect Christmas present? At only 5 nanometres in size, the price might be lower than you think. And it’s functional too, catalysing the splitting of water to make green hydrogen for fuel cells.

The nanoparticle, as imaged with the aberration-corrected scanning transmission electron microscopes, features eyes, nose and mouth of precious-metal platinum clusters embedded in a titanium dioxide face. Each platinum cluster typically contains 30 platinum atoms; within the whole nanoparticle there are approximately 1680 and 180 platinum atoms.

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Dec 21, 2016

Ultra-small nanocavity advances technology for secure quantum-based data encryption

Posted by in categories: encryption, nanotechnology, quantum physics

Researchers have developed a new type of light-enhancing optical cavity that is only 200 nanometers tall and 100 nanometers across. Their new nanoscale system represents a step toward brighter single-photon sources, which could help propel quantum-based encryption and a truly secure and future-proofed network.

Quantum encryption techniques, which are seen as likely to be central to future data encryption methods, use individual as an extremely secure way to encode data. A limitation of these techniques has been the ability to emit photons at high rates. “One of the most important figures of merit for single-photon sources is brightness—or collected photons per second—because the brighter it is, the more data you can transmit securely with quantum encryption,” said Yousif Kelaita, Nanoscale and Quantum Photonics Lab, Stanford University, California.

In the journal Optical Materials Express, Kelaita and his colleagues show that their new nanocavity significantly increased the emission brightness of quantum dots—nanometer-scale semiconductor particles that can emit single photons.

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Dec 15, 2016

New structure shows how cells assemble protein-making machinery

Posted by in categories: chemistry, nanotechnology, particle physics, robotics/AI

Scientists at The Rockefeller University have created the most detailed three-dimensional images to date of an important step in the process by which cells make the nano-machines responsible for producing all-important protein. The results, described December 15 in Science, are prompting the researchers to re-evaluate how they envision this early phase in the construction of ribosomes.

“The structure they determined, shown above, belongs to a particle formally called the “small subunit processome.” Before this particle can fulfill its destiny to become the smaller half of a complete ribosome, the RNA within it needs to be folded, tweaked, and cut.

“Initially, we thought of the small subunit processome as a product on an assembly line, with molecular workers arriving from outside, much like the robots that would put together a car. But that analogy no longer appears apt,” says senior author Sebastian Klinge, head of the Laboratory of Protein and Nucleic Acid Chemistry.

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