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Oct 4, 2022

100k Cycles and Beyond: Extraordinary Cycle Stability for MnO2 Nanowires Imparted by a Gel Electrolyte

Posted by in category: nanotechnology

We demonstrate reversible cycle stability for up to 200 000 cycles with 94–96% average Coulombic efficiency for symmetrical δ-MnO2 nanowire capacitors operating across a 1.2 V voltage window in a poly(methyl methacrylate) (PMMA) gel electrolyte. The nanowires investigated here have a [email protected]δ-MnO2 [email protected] architecture in which a central gold nanowire current collector is surrounded by an electrodeposited layer of δ-MnO2 that has a thickness of between 143 and 300 nm. Identical capacitors operating in the absence of PMMA (propylene carbonate (PC), 1.0 M LiClO4) show dramatically reduced cycle stabilities ranging from 2000 to 8,000 cycles. In the liquid PC electrolyte, the δ-MnO2 shell fractures, delaminates, and separates from the gold nanowire current collector. These deleterious processes are not observed in the PMMA electrolyte.

Oct 4, 2022

Mercedes-Benz revealed its 311 miles ranged truck and customers are already lining up

Posted by in category: transportation

Merdeces-Benz.

Mercedes-Benz Trucks unveiled the concept prototype of the eActros LongHaul at the 2022 IAA Transportation trade fair in Hanover, Germany.

Oct 4, 2022

Rare video shows Russia moving equipment belonging to a nuclear weapons unit

Posted by in category: military

An analyst says the video shared online “is a very good example of Russian strategy” but not necessarily an imminent threat.

Oct 4, 2022

Putin may test underwater nuke 150 times stronger than Hiroshima bomb near Ukrainian border: report

Posted by in categories: drones, existential risks, military

Defense officials fear Russian President Vladimir Putin may flex his military power by testing a massive nuclear torpedo called Poseidon, a report said.

NATO reportedly issued an intelligence report to its members and allies warning that the Kremlin is planning to test so-called “doomsday” nuclear torpedo drones, a senior UK defense source told the Times of London on Monday.

Poseidon is a long-range undersea nuke designed to hit coastal cities at extremely long range by traveling to targets underwater.

Continue reading “Putin may test underwater nuke 150 times stronger than Hiroshima bomb near Ukrainian border: report” »

Oct 4, 2022

Longer-Than-Expected Twirls for Polariton Condensates

Posted by in category: futurism

A polariton condensate can spontaneously rotate, causing it to live significantly longer than individual polaritons would.

Oct 4, 2022

Seeking Stability in a Relativistic Fluid

Posted by in categories: information science, particle physics, space

A fluid dynamics theory that violates causality would always generate paradoxical instabilities—a result that could guide the search for a theory for relativistic fluids.

The theory of fluid dynamics has been successful in many areas of fundamental and applied sciences, describing fluids from dilute gases, such as air, to liquids, such as water. For most nonrelativistic fluids, the theory takes the form of the celebrated Navier-Stokes equation. However, fundamental problems arise when extending these equations to relativistic fluids. Such extensions typically imply paradoxes—for instance, thermodynamic states of the systems can appear stable or unstable to observers in different frames of reference. These problems hinder the description of the dynamics of important fluid systems, such as neutron-rich matter in neutron star mergers or the quark-gluon plasma produced in heavy-ion collisions.

Oct 4, 2022

Popular YouTube Channel Caught Distributing Malicious Tor Browser Installer

Posted by in category: cybercrime/malcode

A popular Chinese-language YouTube channel has emerged as a means to distribute a trojanized version of a Windows installer for the Tor Browser.

Kaspersky dubbed the campaign OnionPoison, with all of the victims located in China. The scale of the attack remains unclear, but the Russian cybersecurity company said it detected victims appearing in its telemetry in March 2022.

The malicious version of the Tor Browser installer is being distributed via a link present in the description of a video that was uploaded to YouTube on January 9, 2022. It has been viewed over 64,500 times to date.

Oct 4, 2022

Researchers Report Supply Chain Vulnerability in Packagist PHP Repository

Posted by in category: cybercrime/malcode

Researchers have disclosed details about a now-patched high-severity security flaw in Packagist, a PHP software package repository, that could have been exploited to mount software supply chain attacks.

“This vulnerability allows gaining control of Packagist,” SonarSource researcher Thomas Chauchefoin said in a report shared with The Hacker News. Packagist is used by the PHP package manager Composer to determine and download software dependencies that are included by developers in their projects.

Continue reading “Researchers Report Supply Chain Vulnerability in Packagist PHP Repository” »

Oct 4, 2022

GI Gmail: US Army launches Google Workspace for troops

Posted by in category: military

Up to 250,000 troops will receive the new service, Google officials confirmed in a blog post. The number aligns with the shortage of Microsoft 365 licenses that Army Times previously identified.

Google Workspace is already used by the Air Force Research Laboratory and various other federal entities. The Army Software Factory was also an early adopter; now, they’ll be permanent Google users.

The launch of Workspace for the Army at large follows months of evaluation behind the scenes.

Continue reading “GI Gmail: US Army launches Google Workspace for troops” »

Oct 4, 2022

Space Force awards rapid satellite launch demonstration contracts

Posted by in category: satellites

Millennium will deliver the ground and on-orbit segments of the program and Firefly will provide the responsive launch service.

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