Archive for the ‘nanotechnology’ category

Nov 15, 2018

More realistic research needed on substances that enter the environment

Posted by in categories: biotech/medical, food, nanotechnology

Chemical substances and nanomaterials are processed on a massive scale in diverse products, while their risks have not been properly assessed. Time and again synthesised substances have been shown to pollute the environment more than lab tests predicted. This is the warning given by Professor of Ecotoxicology Martina Vijver from Leiden University in her inaugural lecture on 16 November.

Laboratory tests are inadequate, according to Vijver, because they do not imitate a complete ecosystem. In her inaugural lecture she will discuss in greater detail two examples of substances where more realistic research is needed: agricultural toxins and nanoparticles. ‘But the same can be said for many other groups of substances, such as antibiotics, plasticizers and GenX.’

Read more

Nov 14, 2018

Detecting light in a different dimension

Posted by in categories: materials, nanotechnology

“We did not expect to see such a dramatic improvement just by changing the morphology of the polymer,” said co-corresponding author Mircea Cotlet, a materials scientist in the CFN Soft and Bio Nanomaterials Group.

The scientists believe that there are two explanations behind their observations.

“At a certain polymer concentration, the nanowires have dimensions comparable to the wavelength of light,” said Li. “This size similarity has the effect of increasing light scattering and absorption. In addition, crystallization of P3HT molecules within the nanowires provides more charge carriers to transfer electricity to the layer.”

Continue reading “Detecting light in a different dimension” »

Nov 10, 2018

Nano-scale process may speed arrival of cheaper hi-tech products

Posted by in categories: energy, nanotechnology

An inexpensive way to make products incorporating nanoparticles—such as high-performance energy devices or sophisticated diagnostic tests—has been developed by researchers.

Read more

Nov 9, 2018

A two-atom quantum duet

Posted by in categories: nanotechnology, particle physics, quantum physics

Researchers at the Center for Quantum Nanoscience (QNS) within the Institute for Basic Science (IBS) achieved a major breakthrough in shielding the quantum properties of single atoms on a surface. The scientists used the magnetism of single atoms, known as spin, as a basic building block for quantum information processing. The researchers could show that by packing two atoms closely together they could protect their fragile quantum properties much better than for just one atom.

The spin is a fundamental mechanical object and governs magnetic properties of materials. In a classical picture, the spin often can be considered like the needle of a compass. The north or south poles of the needle, for example, can represent spin up or down. However, according to the laws of quantum mechanics, the spin can also point in both directions at the same time. This superposition state is very fragile since the interaction of the spin with the local environment causes dephasing of the superposition. Understanding the dephasing mechanism and enhancing the quantum coherence are one of the key ingredients toward spin-based quantum information processing.

In this study, published in the journal Science Advances in November 9, 2018, QNS scientists tried to suppress the decoherence of single by assembling them closely together. The spins, for which they used single titanium atoms, were studied by using a sharp metal tip of a scanning tunneling microscope and the atoms’ were detected using . The researchers found that by bringing the atoms very close together (1 million times closer than a millimeter), they could protect the superposition of these two magnetically coupled atoms 20 times longer compared to an individual atom.

Continue reading “A two-atom quantum duet” »

Nov 8, 2018

A New Nanobot Drills Through Your Eyeball to Deliver Drugs

Posted by in categories: biotech/medical, nanotechnology

It simply twists its way through the dense tissue.

Read more

Nov 7, 2018

Watch tiny robots swim through an eyeball to deliver medicine

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

Scientist use magnetic field to drive spiral nanobots.

Read more

Nov 4, 2018

Rutgers researchers advance stem cell therapy with biodegradable scaffold

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

Rutgers scientists have created a tiny, biodegradable scaffold to transplant stem cells and deliver drugs, which may help treat Alzheimer’s and Parkinson’s diseases, aging brain degeneration, spinal cord injuries and traumatic brain injuries.

Stem cell transplantation, which shows promise as a treatment for central nervous system diseases, has been hampered by low cell survival rates, incomplete differentiation of cells and limited growth of neural connections.

So, Rutgers scientists designed bio-scaffolds that mimic natural tissue and got good results in test tubes and mice, according to a study in Nature Communications. These nano-size scaffolds hold promise for advanced stem cell transplantation and neural tissue engineering. Stem cell therapy leads to stem cells becoming neurons and can restore neural circuits.

Continue reading “Rutgers researchers advance stem cell therapy with biodegradable scaffold” »

Nov 4, 2018

Method spotlights best nanoparticles to deliver genetic drugs

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

The new method uses a red glow to screen hundreds of nanoparticles at once to find which could best deliver drugs into living cells.

Read more

Oct 28, 2018

In a Transhumanist Future, Everyday Could Be Halloween

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

In the spirit of Halloween, where ghouls, ghosts, and vampires walk among us, our perception of reality will soon transform as well, forever possessed by the specter of Transhumanism!

Last year, I wrote about how people could transform themselves into one of my favorite horror creatures—a real-life werewolf—using modern science and tech. This merely scratches the surface, however, in terms of how far an individual can go. In a Transhumanist future, you’ll be empowered to not only question the extent of your humanity but equally put those questions into action.

Continue reading “In a Transhumanist Future, Everyday Could Be Halloween” »

Oct 28, 2018

China has strongest fibre that can haul 160 elephants – and a space elevator?

Posted by in categories: military, nanotechnology

Scientists say just 1 cubic centimetre of the carbon nanotube material won’t break under the weight of more than 800 tonnesTsinghua University researchers are trying to get the fibre into mass production for use in military or other areas.

Read more

Page 1 of 7712345678Last