Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: computing – Page 78

Quantifying metal strength uncertainty in high-explosives models

For the first time, a team of researchers at Lawrence Livermore National Laboratory (LLNL) quantified and rigorously studied the effect of metal strength on accurately modeling coupled metal/high explosive (HE) experiments, shedding light on an elusive variable in an important model for national security and defense applications.

The team used a Bayesian approach to quantify with tantalum and two common explosive materials and integrated it into a coupled metal/HE . Their findings could lead to more accurate models for equation-of-state-studies, which assess the state of matter a material exists in under different conditions. Their paper —featured as an editor’s pick in the Journal of Applied Physics —also suggested that metal strength uncertainty may have an insignificant effect on result.

“There has been a long-standing field lore that HE model calibrations are sensitive to the metal strength,” said Matt Nelms, the paper’s first author and a group leader in LLNL’s Computational Engineering Division (CED). “By using a rigorous Bayesian approach, we found that this is not the case, at least when using tantalum.”

Physicists decipher structure of antimony melt, explain nature of observed structural anomalies

Antimony is widely used in the production of materials for electronics, as well as metal alloys resistant to corrosion and high temperatures.

“Antimony melt is interesting because near the melting point, the atoms in this melt can form bound structures in the form of compact clusters or extended chains and remain in a bound state for quite a long time. We found out that the basic unit of these structures are linked triplets of adjacent atoms, and the centers of mass of these linked atoms are located at the vertices of right triangles. It is from these triplets that larger structures are formed, the presence of which causes anomalous structural features detected in neutron and X-ray diffraction experiments,” explains Dr. Anatolii Mokshin, study supervisor and Chair of the Department of Computational Physics and Modeling of Physical Processes.

The computer modeling method based on quantum-chemical calculations made it possible to reproduce anomalies in the structure of molten with high accuracy.

Xanadu Quantum Technologies builds world’s first universal photonic quantum computer

Aurora consists of four photonically interconnected modular and independent server racks, containing 35 photonic chips and 13km of fiber optics. The system operates at room temperature and is fully automated, which Xanadu says makes it capable of running “for hours without any human intervention.”

The company added that in principle, Aurora could be scaled up to “thousands of server racks and millions of qubits today, realizing the ultimate goal of a quantum data center.” In a blog post detailing Aurora, Xanadu CTO Zachary Vernon said the machine represents the “very first time [Xanadu] – or anyone else for that matter – have combined all the subsystems necessary to implement universal and fault-tolerant quantum computation in a photonic architecture.”

Sweat sensor wristwatch offers real time monitoring of body chemistry

Researchers have created a unique wristwatch that contains multiple modules, including a sensor array, a microfluidic chip, signal processing, and a data display system to monitor chemicals in human sweat. Their study is published in the journal ACS Nano.

“It can continuously and accurately monitor the levels of potassium (K+), sodium (Na+), and calcium (Ca2+) ions, offering both real-time and long-term tracking capabilities,” said senior researcher Prof. Huang Xingjiu from the Institute of Solid State Physics at the Hefei Institutes of Physical Sciences of Chinese Academy of Sciences.

Tremendous progress has been made in sweat sensors based on electrochemical methods, making it easier to track body changes. The stability of the sensor chip is crucial for its application effect and , which is the key to ensuring the long-term reliable operation of the sensor.

Better digital memories with the help of noble gases

The electronics of the future can be made even smaller and more efficient by getting more memory cells to fit in less space. One way to achieve this is by adding the noble gas xenon when manufacturing digital memories.

This has been demonstrated by researchers at Linköping University in a study published in Nature Communications. This technology enables a more even material coating even in small cavities.

Twenty-five years ago, a camera memory card could hold 64 megabytes of information. Today, the same physical size memory card can hold 4 terabytes—over 60,000 times more information.

Asimov Press’ New Book, Written in DNA

CATALOG, a DNA computing company, synthesized and assembled millions of nucleotides of DNA into thousands of individual strands in their Boston laboratories. That DNA was then shipped to France, where Imagene, a company specializing in robust and room-temperature storage solutions, packaged the molecules into laser-sealed, stainless steel capsules. Each capsule was sealed under an inert atmosphere — meaning there is no oxygen or moisture inside the capsule — preserving the DNA inside for tens of thousands of years. And finally, Plasmidsaurus “read” the DNA book at their headquarters in California and submitted the final sequence to the internet for everyone to enjoy. You can check out the book’s DNA sequence at CATALOG’s website, or by scanning the QR code at the bottom of this article.

Pre-Order

We’ve made 1,000 DNA capsules in total. Each capsule comes with a custom-designed display stand and a printed copy of the book. Pre-orders are open today and orders will ship in February. Our first book sold out, and we are not planning to do additional print runs. If you need any help with your order, would like to request international shipping, or plan to order more than ten copies, please email [email protected]. We’ll do our best to help!

Historic Breakthrough in Quantum Physics — True Form of Electrons Finally Revealed

For the first time ever, scientists have managed to snap a picture of an electron’s shape while it moves through a solid. While it doesn’t sound remotely impressive for the average Joe, this discovery gives us a whole new way to look at electrons.

This photographic achievement could lead to big changes in things like quantum computers, futuristic electronics, and maybe even gadgets we haven’t imagined yet. The research was led by physicist Riccardo Comin, a professor at MIT, along with a team of collaborators from various institutions.

“We’ve essentially created a blueprint for uncovering completely new insights that were out of reach before,” explains Comin. His colleague and co-author, Mingu Kang, carried out much of the work at MIT before continuing his research at Cornell University.

Simulation Metaphysics: Cosmological Alpha and Our Deep Past

Simulation Metaphysics extends beyond the conventional Simulation Theory, framing reality not merely as an arbitrary digital construct but as an ontological stratification. In this self-simulating, cybernetic manifold, the fundamental fabric of existence is computational, governed by algorithmic processes that generate physical laws and emergent minds. Under such a novel paradigm, the universe is conceived as an experiential matrix, an evolutionary substrate where the evolution of consciousness unfolds through nested layers of intelligence, progressively refining its self-awareness.

#SimulationMetaphysics #OmegaSingularity #CyberneticTheoryofMind #SimulationHypothesis #SimulationTheory #CosmologicalAlpha #DigitalPhysics #ontology