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Archive for the ‘nanotechnology’ category: Page 245

Apr 4, 2018

Research overcomes major technical obstacles in magnesium-metal batteries

Posted by in categories: chemistry, energy, nanotechnology

YES!!!


Scientists at the Department of Energy’s National Renewable Energy Laboratory (NREL) have discovered a new approach for developing a rechargeable non-aqueous magnesium-metal battery.

A proof-of-concept paper published in Nature Chemistry detailed how the scientists pioneered a method to enable the reversible of magnesium metal in the noncorrosive carbonate-based electrolytes and tested the concept in a prototype cell. The technology possesses potential advantages over lithium-ion batteries—notably, higher density, greater stability, and lower cost.

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Apr 3, 2018

These tiny robots could be disease-fighting machines inside the body

Posted by in categories: biotech/medical, nanotechnology, robotics/AI

Nanobots could provide cancer treatment free from side effects.

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Apr 3, 2018

Transhumanism: advances in technology could already put evolution into hyperdrive – but should they?

Posted by in categories: bioengineering, biotech/medical, evolution, genetics, nanotechnology, transhumanism

Advocates of transhumanism face a similar choice today. One option is to take advantage of the advances in nanotechnologies, genetic engineering and other medical sciences to enhance the biological and mental functioning of human beings (never to go back). The other is to legislate to prevent these artificial changes from becoming an entrenched part of humanity, with all the implied coercive bio-medicine that would entail for the species.


We can either take advantage of advances in technology to enhance human beings (never to go back), or we can legislate to prevent this from happening.

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Mar 30, 2018

Scientists build army of metal-organic nanoflowers to treat cancer

Posted by in categories: biotech/medical, nanotechnology

Doctors have been using radiation to treat cancer for more than a hundred years, but it’s always been a delicate art to direct treatment while avoiding healthy tissue.

To help them, scientists with the University of Chicago have designed an army of tiny flower-shaped metal-and-organic nanoparticles that deliver a one-two punch—first boosting the effects of radiation at the tumor site and then jumpstarting the immune system to search out any remaining tumors.

The research, published March 26 in Nature Biomedical Engineering, led to a candidate molecule currently beginning phase 1 clinical trials.

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Mar 30, 2018

Scientists mix the unmixable to create ‘shocking’ nanoparticles

Posted by in categories: nanotechnology, particle physics

Making a giant leap in the ‘tiny’ field of nanoscience, a multi-institutional team of researchers is the first to create nanoscale particles composed of up to eight distinct elements generally known to be immiscible, or incapable of being mixed or blended together. The blending of multiple, unmixable elements into a unified, homogenous nanostructure, called a high entropy alloy nanoparticle, greatly expands the landscape of nanomaterials—and what we can do with them.

This research makes a significant advance on previous efforts that have typically produced nanoparticles limited to only three different elements and to structures that do not mix evenly. Essentially, it is extremely difficult to squeeze and blend different elements into individual particles at the nanoscale. The team, which includes lead researchers at University of Maryland, College Park (UMD)’s A. James Clark School of Engineering, published a peer-reviewed paper based on the research featured on the March 30 cover of Science.

“Imagine the elements that combine to make nanoparticles as Lego building blocks. If you have only one to three colors and sizes, then you are limited by what combinations you can use and what structures you can assemble,” explains Liangbing Hu, associate professor of materials science and engineering at UMD and one of the corresponding authors of the paper. “What our team has done is essentially enlarged the toy chest in nanoparticle synthesis; now, we are able to build nanomaterials with nearly all metallic and semiconductor elements.”

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Mar 29, 2018

IBM Scientists First to Demo Rocking Brownian Motors for Nanoparticles

Posted by in categories: chemistry, nanotechnology, particle physics

Today, our IBM Research team published the first real world demonstration of a rocking Brownian motor for nanoparticles in the peer-review journal Science. The motors propel nanoscale particles along predefined racetracks to enable researchers to separate nanoparticle populations with unprecedented precision. The reported findings show great potential for lab-on-a-chip applications in material science, environmental sciences or biochemistry.

No More Fairy Tales

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Mar 29, 2018

Sugar-coated nanosheets developed to selectively target pathogens

Posted by in category: nanotechnology

In this way the new platform, developed by a team led by scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), could potentially be used to inactivate or detect pathogens.

The team, which also included researchers from New York University, created the synthesized nanosheets at Berkeley Lab’s Molecular Foundry, a nanoscale science center, out of self-assembling, bio-inspired polymers known as peptoids. The study was published earlier this month in the journal ACS Nano.

The sheets were designed to present simple sugars in a patterned way along their surfaces, and these sugars, in turn, were demonstrated to selectively bind with several proteins, including one associated with the Shiga toxin, which causes dysentery. Because the outside of our cells are flat and covered with sugars, these 2-D nanosheets can effectively mimic cell surfaces.

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Mar 29, 2018

Controlling rust makes beautiful ‘nanoflowers’ for storage

Posted by in categories: energy, nanotechnology

Researchers have developed a straightforward way to make a type of conducting polymers with high surface area—called “nanoflowers”—potentially useful for energy transfer and storage.

If you could brush your cheek against a nanoflower’s microscopic petals, you’d find them cool, hard, and… rusty. Common rust forms the inner skeleton of these lovely and intricate nanostructures, while their outer layer is a kind of plastic.

“Rust will always pose a challenge in Earth’s humid and oxygenated atmosphere,” says Julio M. D’Arcy, assistant professor of chemistry at Washington University in St. Louis and a member of the Institute of Materials Science and Engineering. “Corrosion makes structures fragile and decreases the ability of components to function properly. But in our lab, we’ve learned how to control the growth of rust so that it can serve an important purpose.”

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Mar 29, 2018

Are there extra dimensions lurking at the quantum scale?

Posted by in categories: nanotechnology, quantum physics

Some theories suggest there could be many more dimensions that we’re unaware of, mostly because they’re imperceptibly tiny. Now researchers have taken the search for extra dimensions down to the nanoscale, using a neutron beam to study gravitational forces more precisely than ever before.

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Mar 22, 2018

Nanospears deliver genetic material to cells with pinpoint accuracy

Posted by in categories: biotech/medical, genetics, life extension, nanotechnology

UCLA scientists have developed a new method that utilizes microscopic splinter-like structures called “nanospears” for the targeted delivery of biomolecules such as genes straight to patient cells. These magnetically guided nanostructures could enable gene therapies that are safer, faster and more cost-effective.

The research was published in the journal ACS Nano by senior author Paul Weiss, UC Presidential Chair and distinguished professor of chemistry and biochemistry, materials science and engineering, and member of the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA.

Gene therapy, the process of adding or replacing missing or defective genes in patient cells, has shown great promise as a treatment for a host of diseases, including hemophilia, muscular dystrophy, immune deficiencies and certain types of cancer.

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