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Archive for the ‘nanotechnology’ category: Page 152

Jan 3, 2021

The internet of thoughts is coming

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

Before the century is out, advances in nanotechnology, nanomedicine, AI, and computation will result in the development of a “Human Brain/Cloud Interface” (B/CI), that connects neurons and synapses in the brain to vast cloud-computing networks in real time.

That’s the prediction of a large international team of neurosurgeons, roboticists, and nanotechnologists, writing in the journal Frontiers in Neuroscience.

A Human Brain/Cloud Interface, sometimes dubbed the “internet of thoughts”, theoretically links brains and cloud-based data storage through the intercession of nanobots positioned at strategically useful neuronal junctions.

Jan 3, 2021

Scientists Replicate Self-Cleaning Anti-reflective Nanocoating of Insects’ Eyes

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

Scientists from Russia and Switzerland have probed into nanostructures covering the corneas of the eyes of small fruit flies. Investigating them the team learned how to produce the safe biodegradable nanocoating with antimicrobial, anti-reflective, and self-cleaning properties in a cost-effective and eco-friendly way. The protection coating might find applications in diverse areas of economics including medicine, nanoelectronics, automotive industry, and textile industry. The article describing these discoveries appears in Nature.

Scientists from Far Eastern Federal University (FEFU, Russia) teamed up with colleagues from University of Geneva, The University of Lausanne, and Swiss Federal Institute of Technology in Zurich for an interdisciplinary research project during which they were able to artificially reproduce the nanocoating of the corneas of fruit flies (Drosophila flies) naturally designed to protect the eyes of the insects from the smallest dust particles and shut off the reflection of light.

The craft of nanocoating meets demands in various fields of economics. It can wrap up any flat or three-dimensional structure, and, depending on the task, give it anti-reflective, antibacterial, and hydrophobic properties, including self-cleaning. The latter, for example, is a very important feature for expensive reusable overnight ortho-k lenses that correct the eyesight. Similar anti-reflective coatings are already known though created by more complex and costly methods. They are being used on the panels of computers, glasses, paintings in museums can be covered with them in order to exclude reflection and refraction of light.

Jan 3, 2021

Desalination Breakthrough Could Lead to Cheaper Water Filtration

Posted by in categories: chemistry, energy, food, health, nanotechnology, sustainability

AUSTIN, Texas — Producing clean water at a lower cost could be on the horizon after researchers from The University of Texas at Austin and Penn State solved a complex problem that had baffled scientists for decades, until now.

Desalination membranes remove salt and other chemicals from water, a process critical to the health of society, cleaning billions of gallons of water for agriculture, energy production and drinking. The idea seems simple — push salty water through and clean water comes out the other side — but it contains complex intricacies that scientists are still trying to understand.

The research team, in partnership with DuPont Water Solutions, solved an important aspect of this mystery, opening the door to reduce costs of clean water production. The researchers determined desalination membranes are inconsistent in density and mass distribution, which can hold back their performance. Uniform density at the nanoscale is the key to increasing how much clean water these membranes can create.

Jan 1, 2021

Why the Future Will Be Weird with Isaac Arthur

Posted by in categories: bioengineering, existential risks, nanotechnology, robotics/AI, space travel

Science and Futurism with Isaac Arthur is a YouTube channel which focuses on exploring the depths of concepts in science and futurism. Since its first episode in 2014, SFIA has considered topics ranging from the seemingly mundane, to the extremely exotic, featuring episodes on megastructure engineering, interstellar travel, the future of earth, and the Fermi paradox, among others. Yet regardless of how strange a subject may seem, Isaac always tries to ensure that the discussion is grounded in the known science of today.

Isaac Arthur joins John Michael Godlier on today’s Event Horizon to discuss these subjects, the future past 2020. Thoughts on life extension. Nanotechnology. Artificial intelligence. The Fermi paradox.

Continue reading “Why the Future Will Be Weird with Isaac Arthur” »

Jan 1, 2021

Electroconductive Nanobiomaterials for Tissue Engineering and Regenerative Medicine

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

Shared last year, but with the talk of future regenerative medicine I think it is important: Regenerative medicine aims to engineer tissue constructs that can recapitulate the functional and structural properties of native organs. Most novel regenerative therapies are based on the recreation of a three-dimensional environment that can provide essential guidance for cell organization, survival, and function, which leads to adequate tissue growth. The primary motivation in the use of conductive nanomaterials in tissue engineering has been to develop biomimetic scaffolds to recapitulate the electrical properties of the natural extracellular matrix, something often overlooked in numerous tissue engineering materials to date. In this review article, we focus on the use of electroconductive nanobiomaterials for different biomedical applications, particularly, very recent advancements for cardiovascular, neural, bone, and muscle tissue regeneration. Moreover, this review highlights how electroconductive nanobiomaterials can facilitate cell to cell crosstalk (i.e., for cell growth, migration, proliferation, and differentiation) in different tissues. Thoughts on what the field needs for future growth are also provided.


Bioelectricity.

Jan 1, 2021

Controlling the nanoscale structure of membranes is key for clean water, researchers find

Posted by in categories: chemistry, energy, engineering, food, nanotechnology, sustainability

A desalination membrane acts as a filter for salty water: push the water through the membrane, get clean water suitable for agriculture, energy production and even drinking. The process seems simple enough, but it contains complex intricacies that have baffled scientists for decades—until now.

Researchers from Penn State, The University of Texas at Austin, Iowa State University, Dow Chemical Company and DuPont Water Solutions published a key finding in understanding how membranes actually filter minerals from water, online today (Dec. 31) in Science. The article will be featured on the print edition’s cover, to be issued tomorrow (Jan. 1).

“Despite their use for many years, there is much we don’t know about how water filtration membranes work,” said Enrique Gomez, professor of chemical engineering and materials science and engineering at Penn State, who led the research. “We found that how you control the density distribution of the membrane itself at the nanoscale is really important for water-production performance.”

Dec 29, 2020

New quantum nanodevice can simultaneously act as a heat engine and a refrigerator

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

A multitasking nanomachine that can act as a heat engine and a refrigerator at the same time has been created by RIKEN engineers. The device is one of the first to test how quantum effects, which govern the behavior of particles on the smallest scale, might one day be exploited to enhance the performance of nanotechnologies.

Conventional heat engines and refrigerators work by connecting two pools of fluid. Compressing one pool causes its fluid to heat up, while rapidly expanding the other pool cools its fluid. If these operations are done in a periodic cycle, the pools will exchange and the system can be used as either a heat engine or a fridge.

It would be impossible to set up a macroscale machine that does both tasks simultaneously—nor would engineers want to, says Keiji Ono of the RIKEN Advanced Device Laboratory. “Combining a traditional heat engine with a refrigerator would make it a completely useless machine,” he says. “It wouldn’t know what to do.”

Dec 26, 2020

Building a Quantum Network Using Tiny Nanoscale Nodes

Posted by in categories: computing, nanotechnology, quantum physics

New research demonstrates a way to use quantum properties of light to transmit information, a key step on the path to the next generation of computing and communications systems.

Researchers at the University of Rochester and Cornell University have taken an important step toward developing a communications network that exchanges information across long distances by using photons, mass-less measures of light that are key elements of quantum computing and quantum communications systems.

The research team has designed a nanoscale node made out of magnetic and semiconducting materials that could interact with other nodes, using laser light to emit and accept photons.

Dec 25, 2020

Suspicions grow that nanoparticles in Pfizer’s COVID-19 vaccine trigger rare allergic reactions

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

Severe allergy-like reactions in at least eight people who received the COVID-19 vaccine produced by Pfizer and BioNTech (and Moderna now) over the past 2 weeks may be due to a compound in the packaging of the messenger RNA (mRNA) that forms the vaccine’s main ingredient, scientists say. A similar mRNA vaccine developed by Moderna, which was authorized for emergency use in the United States on Friday, also contains the compound, polyethylene glycol (PEG) PEG has never been used before in an approved vaccine, but it is found in many drugs that have occasionally triggered anaphylaxis—a potentially life-threatening reaction that can cause rashes, a plummeting blood pressure, shortness of breath, and a fast heartbeat. Some allergists and immunologists believe a small number of people previously exposed to PEG may have high levels of antibodies against PEG, putting them at risk of an anaphylactic reaction to the vaccine.


Life-threatening responses seen in at least eight people could be linked to polyethylene glycol, known to trigger reactions to some drugs.

Dec 24, 2020

Atomic-scale nanowires can now be produced at scale

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

Researchers from Tokyo Metropolitan University have discovered a way to make self-assembled nanowires of transition metal chalcogenides at scale using chemical vapor deposition. By changing the substrate where the wires form, they can tune how these wires are arranged, from aligned configurations of atomically thin sheets to random networks of bundles. This paves the way to industrial deployment in next-gen industrial electronics, including energy harvesting, and transparent, efficient, even flexible devices.

Electronics is all about making things smaller—smaller features on a chip, for example, means more computing power in the same amount of space and better efficiency, essential to feeding the increasingly heavy demands of a modern IT infrastructure powered by machine learning and artificial intelligence. And as devices get smaller, the same demands are made of the intricate wiring that ties everything together. The ultimate goal would be a wire that is only an atom or two in thickness. Such would begin to leverage completely different physics as the electrons that travel through them behave more and more as if they live in a one-dimensional world, not a 3D one.

In fact, scientists already have materials like carbon nanotubes and transition metal chalcogenides (TMCs), mixtures of transition metals and group 16 elements which can self-assemble into atomic-scale nanowires. The trouble is making them long enough, and at scale. A way to mass produce nanowires would be a game changer.