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#engineering
Category: engineering – Page 128
Eavesdroppers can hack 6G frequency with DIY metasurface
Crafty hackers can make a tool to eavesdrop on some 6G wireless signals in as little as five minutes using office paper, an inkjet printer, a metallic foil transfer and a laminator.
The wireless security hack was discovered by engineering researchers from Rice University and Brown University, who will present their findings and demonstrate the attack this week in San Antonio at ACM WiSec 2022, the Association for Computing Machineryâs annual conference on security and privacy in wireless and mobile networks.
âAwareness of a future threat is the first step to counter that threat,â said study co-author Edward Knightly, Riceâs Sheafor-Lindsay Professor of Electrical and Computer Engineering. âThe frequencies that are vulnerable to this attack arenât in use yet, but they are coming and we need to be prepared.â
Making a Magnetosphere for Mars
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We believe Mars may once have had oceans and sky, but lost them from a lack of a magnetosphere. How does this happen, and how can we create a magnetosphere for Mars so we can terraform and live on it?
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Martian Magnetosphere paper by R.A. Bamford: https://arxiv.org/abs/2111.06887
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Credits:
Making a Magnetosphere for Mars.
Science & Futurism with Isaac Arthur.
Episode 342, May 12, 2022
Written, Produced & Narrated by Isaac Arthur.
Editors:
David McFarlane.
Cover Art:
Revolutionary New Qubit Platform Could Transform Quantum Computing
The digital device you are using to view this article is no doubt using the bit, which can either be 0 or 1, as its basic unit of information. However, scientists around the world are racing to develop a new kind of computer based on the use of quantum bits, or qubits, which can simultaneously be 0 and 1 and could one day solve complex problems beyond any classical supercomputers.
A research team led by scientists at the U.S. Department of Energyâs (DOE) Argonne National Laboratory, in close collaboration with FAMU-FSU College of Engineering Associate Professor of Mechanical Engineering Wei Guo, has announced the creation of a new qubit platform that shows great promise to be developed into future quantum computers. Their work is published in the journal Nature.
âQuantum computers could be a revolutionary tool for performing calculations that are practically impossible for classical computers, but there is still work to do to make them reality,â said Guo, a paper co-author. âWith this research, we think we have a breakthrough that goes a long way toward making qubits that help realize this technologyâs potential.â
Researchers invent worldâs smallest biomechanical linkage
Researchers at Princeton University have built the worldâs smallest mechanically interlocked biological structure, a deceptively simple two-ring chain made from tiny strands of amino acids called peptides.
In a paper published August 23 in Nature Chemistry, the team detailed a library of such structures made in their labâtwo interlocked rings, a ring on a dumbbell, a daisy chain and an interlocked double lassoâeach around one billionth of a meter in size. The study also demonstrates that some of these structures can toggle between at least two shapes, laying the groundwork for a biomolecular switch.
âWeâve been able to build a bunch of structures that no oneâs been able to build before,â said A. James Link, professor of chemical and biological engineering, the studyâs principal investigator. âThese are the smallest threaded or interlocking structures you can make out of peptides.â
Sophisticated fluid mechanics model: Spaceâtime isogeometric analysis of car and tire aerodynamics
The complex aerodynamics around a moving car and its tires are hard to see, but not for some mechanical engineers.
Specialists in fluid dynamics at Rice University and Waseda University in Tokyo have developed their computer simulation methods to the point where itâs possible to accurately model moving cars, right down to the flow around rolling tires.
The results are there for all to see in a video produced by Takashi Kuraishi, a research associate in the George R. Brown School of Engineering lab of Tayfun Tezduyar, the James F. Barbour Professor of Mechanical Engineering, and a student of alumnus Kenji Takizawa, a professor at Waseda and an adjunct professor at Rice.
Scientists synthesize new, ultra-hard material
Russian scientists have synthesized a new ultra-hard material consisting of scandium containing carbon. It consists of polymerized fullerene molecules with scandium and carbon atoms inside. The work paves the way for future studies of fullerene-based ultra-hard materials, making them a potential candidate for photovoltaic and optical devices, elements of nanoelectronics and optoelectronics, and biomedical engineering as high-performance contrast agents. The study was published in Carbon.
The discovery of new, all-carbon molecules known as fullerenes almost 40 years ago was a revolutionary breakthrough that paved the way for fullerene nanotechnology. Fullerenes have a spherical shape made of pentagons and hexagons that resembles a soccer ball, and a cavity within the carbon frame of fullerene molecules can accommodate a variety of atoms.
The introduction of metal atoms into carbon cages leads to the formation of endohedral metallofullerenes (EMF), which are technologically and scientifically important owing to their unique structures and optoelectronic properties.
Nature-inspired self-sensing materials could lead to new developments in engineering
The cellular forms of natural materials are the inspiration behind a new lightweight, 3D printed smart architected material developed by an international team of engineers.
The team, led by engineers from the University of Glasgow, mixed a common form of industrial plastic with carbon nanotubes to create a material which is tougher, stronger and smarter than comparable conventional materials.
The nanotubes also allow the otherwise nonconductive plastic to carry an electric charge throughout its structure. When the structure is subjected to mechanical loads, its electrical resistance changes. This phenomenon, known as piezoresitivity, gives the material the ability to âsenseâ its structural health.
Scientists engineer a bacteria to produce a drug used to treat Parkinsonâs disease
The results of the study could lead to new treatment options. In a groundbreaking new study published in the journal Nature on Thursday, researchers have compared the brain cells of patients who had died from either Parkinsonâs disease or dementia to people unaffected by the disorders and found which brain cells are responsible for both conditions.
A team of researchers has created a bacteria that can produce a steady and consistent source of medicine inside a patientâs gut, suggesting the possibility for genetically edited bacteria to be an efficient Parkinsonâs disease treatment.
Moreover, the researchers have shown via preclinical experiments that the novel treatment technique is not only safe and well-tolerated, but it also reduces side effects that can occur when other treatments are utilized.
An engineered probiotic
For long, scientists have been experimenting with ways of engineering bacteria to fit our needs for decades. The new research is the latest example of that.
