Menu

Blog

Page 2283

May 30, 2022

Physicists Discover Strange Array of Links and Knots in Quantum Matter

Posted by in categories: climatology, mathematics, quantum physics

As physicists dig deeper into the quantum realm, they are discovering an infinitesimally small world composed of a strange and surprising array of links, knots, and winding. Some quantum materials exhibit magnetic whirls called skyrmions — unique configurations sometimes described as “subatomic hurricanes.” Others host a form of superconductivity that twists into vortices.

Now, in an article published in the journal Nature, a Princeton-led team of scientists has discovered that electrons in quantum matter can link one another in strange new ways. The work brings together ideas in three areas of science – condensed matter physics, topology, and knot theory – in a new way, raising unexpected questions about the quantum properties of electronic systems.

Topology is the branch of theoretical mathematics that studies geometric properties that can be deformed but not intrinsically changed. Topological quantum states first came to the public’s attention in 2016 when three scientists, including Duncan Haldane, who is Princeton’s Thomas D. Jones Professor of Mathematical Physics and Sherman Fairchild University Professor of Physics, were awarded the Nobel Prize for their theoretical prediction of topology in electronic materials.

May 30, 2022

The Human Heart Can Repair Itself, And We Now Know Which Cells Are Crucial For It

Posted by in category: biotech/medical

Our bodies are pretty ingenious when it comes to self-repair, and scientists have been studying in detail the ways in which the heart patches itself up after a heart attack (myocardial infarction). They hope to find clues that could lead to better treatments for cardiovascular problems.

New research has revealed that the immune response of the body and the lymphatic system (part of the immune system) are crucial in the way that the heart repairs itself after a heart attack has caused damage to the heart muscle.

Continue reading “The Human Heart Can Repair Itself, And We Now Know Which Cells Are Crucial For It” »

May 30, 2022

A novel 3D printing technique produces objects out of resin in mere seconds

Posted by in category: 3D printing

Engineers at EPFL’s Laboratory of Applied Photonic Devices (LAPD), within the School of Engineering, have developed a novel 3D printer capable of fabricating objects almost instantaneously in opaque resin, according to a press release by the institution published on Monday.

EPFL claims its new 3D printer is one of the fastest in the world. It achieves this speed by replacing additive manufacturing with a new volumetric method.

A Star Wars-inspired test

Continue reading “A novel 3D printing technique produces objects out of resin in mere seconds” »

May 30, 2022

Hubble captures a perfectly formed Grand Design Spiral

Posted by in categories: mapping, space

An image captured by the Hubble Space Telescope and shared by NASA this week shows the most stunning of spiral galaxies: A Grand Design Spiral called NGC 3,631, given that designation because of its clear, prominent arms and highly organized spiral structure. This ideal spiral galaxy is located 53 million light-years from Earth in the constellation of Ursa Major and is seen face-on from Earth to give a perfect view of its pleasing structure.

The image was created using data from two of Hubble’s instruments, the Wide Field Camera 3 and Advanced Camera for Surveys. The Advanced Camera for Surveys is a Hubble camera used primarily for capturing data in the visible light range, which is the same range seen by the human eye. It was installed onto Hubble in 2002. The Wide Field Camera 3 is a newer instrument, installed in 2009 as an upgrade to the older Wide Field and Planetary Camera 2. The Wide Field Camera 3 is used to capture ultraviolet and infrared light as well as to detect visible light.

This image combines both visible light and infrared data. The blue shades represent light which is in the blue visible light wavelength, while the orange represents the infrared data. Looking in the infrared is helpful to look through clouds of dust that are opaque in visible light, and it also maps out the distribution of heat as warm material gives off infrared light.

May 30, 2022

Multi-functional bandage helps wounds to heal

Posted by in categories: biotech/medical, engineering

Researchers at the Technical University of Munich (TUM) have developed a film that not only protects wounds similar to the way a bandage does, but also helps wounds to heal faster, repels bacteria, dampens inflammation, releases active pharmaceutical ingredients in a targeted manner and ultimately dissolves by itself. This is all made possible by its dedicated design and the use of mucins, molecules which occur naturally in mucous membranes.

Conventional bandages may be very effective for treating smaller skin abrasions, but things get more difficult when it comes to soft-tissue injuries such as on the tongue or on sensitive surfaces like the intestines. What kind of material will adhere there without damaging the tissue or sticking to adjacent points? How can wounds be protected from external influences and bacteria? What kind of substance will allow cells underneath to close the wound, and then ultimately disappear without a trace?

In spite of recent progress in developing materials addressing some of the specific requirements mentioned above, engineering a multifunctional all-in-one solution remains a challenge. A team led by Oliver Lieleg, Professor of Biomechanics at the Technical University of Munich (TUM), has developed a biopolymer film that combines a wide range of different functions at the same time. In a recently published study, the biomolecular “bandage” showed highly promising results and is ready to undergo further testing and tailoring.

May 30, 2022

Smart films facilitate human-machine interaction

Posted by in categories: cyborgs, entertainment, mobile phones

Imagine this: A smooth touchscreen display placed on top of a thin silicone polymer film suddenly generates the feeling of a tiny raised button under the user’s finger. Or how about the idea of wearing that same polymer film like a second skin? If used to line an industrial glove, the film can provide valuable feedback by gesture recognition and by sending tactile signals, such as pulses or vibrations, to the wearer. The research team led by Professor Stefan Seelecke of Saarland University will be at this year’s Hannover Messe, the industrial trade fair running from 30 May to 2 June, where the team will be demonstrating how smart tactile surfaces are now being used as novel human-machine interfaces.

Seelecke’s research team at Saarland University are using thin silicone films to give surfaces some very novel capabilities. The technology, which is able to create the sensation of a tactile “button” or “slider” on flat glass display screens, is literally bringing a new dimension to touchscreen interactions. The is able to change shape on demand to create the feeling of a raised button or a key on the surface of the display that the user can then use, for example, to navigate around a page or to enter data.

“Using this technology, we can make the user interfaces of smart phones, information screens or household devices more user friendly,” said Seelecke, who heads the Intelligent Material Systems Lab at Saarland University. If a user feels a pulse or vibration under their fingertips, they can then respond by tapping the screen. And because the user also experiences the slight resistance that we feel when we press a ‘real’ button or switch, they know that their response has been successful. For the blind and partially sighted, this sort of physical feedback is not a gimmick, but hugely valuable in their day to day lives.

May 30, 2022

Elon Musk versus the Woke Cartel

Posted by in categories: Elon Musk, governance, government, law, neuroscience, sustainability, transhumanism

Many criticisms have been leveled against Elon Musk—that he’s part of the elite, that Tesla has been the beneficiary of government handouts and exemptions, that his transhumanist Neuralink is a brain-data-mining operation. Yet his planned purchase of Twitter, his supposed free-speech absolutism, and his subsequent renunciation of the Democratic Party as “the party of hate” have put Musk squarely in the crosshairs of the woke cartel.

Vitriolic Twitter storms, a New York Times-Financial Times biographical exposé, a slew of hit pieces and scaremongering segments in the legacy media, and allegations of sexual harassment have dogged the automobile magnate ever since his Twitter bid. In response, Musk announced on Twitter that he’s assembling a legal crew to sue defamers and defend Tesla (and likely himself) against lawsuits.

But the best indication that the woke cartel has really gone berserk is its removal of Tesla from the S&P 500’s ESG (Environmental, Social, and Governance) Index. This last rebuff proves that “ESG is a scam.”

May 30, 2022

Artificial intelligence is breaking patent law

Posted by in categories: geopolitics, law, robotics/AI, treaties

The patent system assumes that inventors are human. Inventions devised by machines require their own intellectual property law and an international treaty.

May 30, 2022

New light-powered catalysts could aid in manufacturing

Posted by in categories: chemistry, energy

Chemical reactions that are driven by light offer a powerful tool for chemists who are designing new ways to manufacture pharmaceuticals and other useful compounds. Harnessing this light energy requires photoredox catalysts, which can absorb light and transfer the energy to a chemical reaction.

MIT chemists have now designed a new type of photoredox that could make it easier to incorporate light-driven reactions into . Unlike most existing photoredox catalysts, the new class of materials is insoluble, so it can be used over and over again. Such catalysts could be used to coat tubing and perform chemical transformations on reactants as they flow through the tube.

“Being able to recycle the catalyst is one of the biggest challenges to overcome in terms of being able to use photoredox catalysis in manufacturing. We hope that by being able to do flow chemistry with an immobilized catalyst, we can provide a new way to do photoredox catalysis on larger scales,” says Richard Liu, an MIT postdoc and the joint lead author of the new study.

May 30, 2022

Symmetry of Cosmological Observables, and a High Hubble Constant as an Indicator of a Mirror World Dark Sector

Posted by in category: space

We find that a uniform scaling of the gravitational free-fall rates and photon-electron scattering rate leaves most dimensionless cosmological observables nearly invariant. This result opens up a new approach to reconciling cosmic microwave background and large-scale structure observations with high values of the Hubble constant $H_0$: Find a cosmological model in which the scaling transformation can be realized without violating any measurements of quantities not protected by the symmetry. A “mirror world” dark sector allows for effective scaling of the gravitational free-fall rates while respecting the measured mean photon density today. Further model building might bring consistency with the two constraints not yet satisfied: the inferred primordial abundances of deuterium and helium.