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Archive for the ‘nanotechnology’ category: Page 168

Jan 4, 2020

A new way to warm up frozen tissue could help with the organ shortage

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

This technology may one day be used to revive patient suspended in cryonics.


A new way to warm up frozen tissue using tiny vibrating particles could one day help with the problem of organ shortages.

We know how to cool organs to cryogenic temperatures, which is usually below 320 degrees Fahrenheit. But the organs can’t be stored for long — sometimes only four hours for heart and lungs — because they get damaged when you try to warm them up. As a result, more than 60 percent of donor hearts and lungs aren’t transplanted. In a study published today in Science Translational Medicine, scientists used nanoparticles to warm up frozen tissue quickly and without damaging the organs. Within a decade, this could lead to being able to store entire organs in organ banks for a long period of time, the authors say.

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Jan 3, 2020

PostHuman — What does it mean?

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

We often hear this word used in Transhumanist (H+) discussions, but what is meant by it? After all, if H+ is about using scitech to enhance Human capabilities via internal modifications what does it mean to go beyond these? In the following I intend to delineate possible stages of enhancement from what exists today to what could exist as an endpoint of this process in centuries to come.

Although I have tried to put it in what I believe to be a plausible chronological order a great deal depends on major unknowns, most especially the rapidity with which Artificial Intelligence (AI) develops over the next few decades. Although AI and biotech are at present evolving separately and in parallel I would expect at some point fairly soon for there to be a massive crossover. Exactly how or when that might happen is again a moot question. There is also a somewhat artificial distinction between machines and biology, which exists because our current machines are so primitive. Once we have a fully functioning nanotechnology, just like Nature’s existing nanotech (life), that distinction will disappear completely.

Jan 2, 2020

A quantum breakthrough brings a technique from astronomy to the nano-scale

Posted by in categories: nanotechnology, quantum physics, space

Researchers at Columbia University and University of California, San Diego, have introduced a novel “multi-messenger” approach to quantum physics that signifies a technological leap in how scientists can explore quantum materials.

The findings appear in a recent article published in Nature Materials, led by A. S. McLeod, postdoctoral researcher, Columbia Nano Initiative, with co-authors Dmitri Basov and A. J. Millis at Columbia and R.A. Averitt at UC San Diego.

“We have brought a technique from the inter-galactic scale down to the realm of the ultra-small,” said Basov, Higgins Professor of Physics and Director of the Energy Frontier Research Center at Columbia. Equipped with multi-modal nanoscience tools we can now routinely go places no one thought would be possible as recently as five years ago.”

Jan 2, 2020

Researchers build a particle accelerator that fits on a chip

Posted by in categories: biotech/medical, chemistry, computing, nanotechnology

The accelerator-on-a-chip demonstrated in Science is just a prototype, but Vuckovic said its design and fabrication techniques can be scaled up to deliver particle beams accelerated enough to perform cutting-edge experiments in chemistry, materials science and biological discovery that don’t require the power of a massive accelerator.

“The largest accelerators are like powerful telescopes. There are only a few in the world and scientists must come to places like SLAC to use them,” Vuckovic said. “We want to miniaturize accelerator technology in a way that makes it a more accessible research tool.”

Team members liken their approach to the way that computing evolved from the mainframe to the smaller but still useful PC. Accelerator-on-a-chip technology could also lead to new cancer radiation therapies, said physicist Robert Byer, a co-author of the Science paper. Again, it’s a matter of size.

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Jan 2, 2020

Laser-heated nanowires produce micro-scale nuclear fusion

Posted by in categories: nanotechnology, nuclear energy, particle physics

Nuclear fusion, the process that powers our sun, happens when nuclear reactions between light elements produce heavier ones. It’s also happening — at a smaller scale — in a Colorado State University laboratory.

Using a compact but powerful laser to heat arrays of ordered nanowires, CSU scientists and collaborators have demonstrated micro-scale nuclear fusion in the lab. They have achieved record-setting efficiency for the generation of neutrons — chargeless sub-atomic particles resulting from the fusion process.

Their work is detailed in a paper published in Nature Communications (“Micro-scale fusion in dense relativistic nanowire array plasmas”), and is led by Jorge Rocca, University Distinguished Professor in electrical and computer engineering and physics. The paper’s first author is Alden Curtis, a CSU graduate student.

Jan 1, 2020

How nanoparticles from the environment enter the brain

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

A group of scientists from the Russian Academy of Sciences (ICG SB RAS) and the TSU Biological Institute has established a path through which nanoparticles of viruses and organic and inorganic substances from the environment enter the brain. Additionally, the researchers report a simple and inexpensive way to block their entry. The data obtained by the project could play a large role in medicine and pharmaceuticals, where nanoparticles are increasingly used for the diagnosis and treatment of serious diseases.

“There are a large number of nanoparticles of a wide variety of chemical elements and their compounds in the environment, ranging from harmless to toxic, for example, heavy metal oxides,” says Mikhail Moshkin, director of the Center for Laboratory Animal Genetic Resources of the ICG SB RAS. “Scientists have accumulated data that indicate the adverse effect of nanoparticles, for example, people who live closer than 50 meters to large highways may develop neurodegenerative diseases (Alzheimer’s, Parkinson’s and others) due to the accumulation of nanosized particles in the brain.”

The researchers sought to determine how nanoparticles enter the brain. They cannot penetrate through the lungs and blood vessels because the blood-brain barrier blocks them from the brain. Experiments conducted on rodents helped calculate the trajectory of the movement of nanoparticles.

Dec 31, 2019

Scientists have developed a new concept of mathematical modeling

Posted by in categories: energy, mathematics, nanotechnology

A team of scientists from the Research Center “Fundamental Problems of Thermophysics and Mechanics,” of Samara Polytech is engaged in the construction of new mathematical models and the search for methods for their study in relation to a wide range of local nonequilibrium transport processes in various physical systems. An innovative approach developed not so long ago is based on a modern version of third-generation thermodynamics. The project of these scientists, “Development, theoretical research and experimental verification of mathematical models of oscillatory processes, heat and mass transfer and thermomechanics with two- and multiphase delays” was among the winners of the RFBR contest. Recent research results are published in the journal Physica A: Statistical Mechanics and its Applications.

An interest in studying local nonequilibrium processes that take into account the specifics of transport processes at the molecular level (the mean free path of a molecule, the momentum transfer rate, relaxation time, etc.) is dictated by the need to conduct various physical processes under —for example, femtosecond concentrated exposure to energy flows on matter, ultra-low and ultra-high temperatures and pressures, shock waves, etc. Such physical processes are widely used to create new technologies for producing nanomaterials and coatings with unique physicochemical properties that cannot be obtained by traditional methods (binary and multicomponent metal alloys, ceramics, polymeric materials, metal and semiconductor glasses, nanofilms, graphene, composite nanomaterials, etc.).

“Classical thermodynamics is not suitable for describing processes that occur under local nonequilibrium conditions, since it is based on the principle of local equilibrium. Our project is important both for and for practical applications,” explains the project manager, Professor Igor Kudinov. “To accomplish the tasks, we plan to create a new, unparalleled software package designed for 3D modeling of high-speed local nonequilibrium processes of heat, mass and momentum transfer. Thus, our method opens up wide possibilities for studying processes that are practically significant from the point of view of modern nanotechnology.”

Dec 30, 2019

Technology Biotechnologies

Posted by in categories: biotech/medical, computing, economics, nanotechnology

At Roswell we have developed the first Molecular Electronics chip. We utilized advances in semiconductor technology, nano-fabrication and bio-sensors to create standard CMOS chips that directly integrate sensor molecules into the CMOS integrated circuits.

Going “on-chip” to deploy bio-sensors provides unprecedented economics, precision, portability, and scalability. Our first chip is designed to read DNA; future chips will be designed for protein detection and other diverse bio-sensing applications.

Dec 28, 2019

Researchers Teleport Information Between Two Computer Chips for the First Time

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

For the first time, researchers and scientists from the University of Bristol, in collaboration with the Technical University of Denmark (DTU), have achieved quantum teleportation between two computer chips. The team successfully developed chip-scale devices that are able to harness the applications of quantum physics by generating and manipulating single particles of light within programmable nano-scale circuits.

Unlike regular or science fiction teleportation which transfer particles from one place to another, with quantum teleportation, nothing physical is being transported. Rather, the information necessary to prepare a target system in the same quantum state as the source system is transmitted from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location.

In a feat that opens the door for quantum computers and quantum internet, the team managed to send information from one chip to another instantly without them being physically or electronically connected. Their work, published in the journal Nature Physics, contains a range of other quantum demonstrations. This chip-to-chip quantum teleportation was made possible by a phenomenon called quantum entanglement. The entanglement happens between two photons (two light particles) with the interaction taking place for a brief moment and the two photons sharing physical states. Quantum entanglement phenomenon is so strange that physicist Albert Einstein famously described it as ‘spooky action at a distance’.

Dec 26, 2019

Study reveals the Great Pyramid of Giza can focus electromagnetic energy

Posted by in categories: existential risks, nanotechnology, physics, solar power, sustainability

An international research group has applied methods of theoretical physics to investigate the electromagnetic response of the Great Pyramid to radio waves. Scientists predicted that under resonance conditions, the pyramid can concentrate electromagnetic energy in its internal chambers and under the base. The research group plans to use these theoretical results to design nanoparticles capable of reproducing similar effects in the optical range. Such nanoparticles may be used, for example, to develop sensors and highly efficient solar cells. The study was published in the Journal of Applied Physics.

While Egyptian are surrounded by many myths and legends, researchers have little scientifically reliable information about their physical properties. Physicists recently took an interest in how the Great Pyramid would interact with electromagnetic waves of a resonant length. Calculations showed that in the resonant state, the pyramid can concentrate in the its internal chambers as well as under its base, where the third unfinished chamber is located.

These conclusions were derived on the basis of numerical modeling and analytical methods of physics. The researchers first estimated that resonances in the pyramid can be induced by radio waves with a length ranging from 200 to 600 meters. Then they made a model of the electromagnetic response of the pyramid and calculated the extinction cross section. This value helps to estimate which part of the incident wave energy can be scattered or absorbed by the pyramid under resonant conditions. Finally, for the same conditions, the scientists obtained the electromagnetic field distribution inside the pyramid.