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Blog – Page 122

A curiosity about tiny dots on a germanium wafer with metal films led to the discovery of intricate spiral patterns etched by a chemical reaction. Further experiments revealed that these patterns emerge from chemical reactions interacting with mechanical forces through a deforming catalyst. This breakthrough marks the most significant advance in studying chemical pattern formation since the 1950s. Understanding these complex systems could shed light on natural processes like crack formation in materials and the effects of stress on biological growth.

University of California, Los Angeles doctoral student Yilin Wong noticed tiny dots appearing on one of her samples, which had been accidentally left out overnight. The layered sample consisted of a germanium wafer topped with evaporated metal films in contact with a drop of water. On a whim, she examined the dots under a microscope and couldn’t believe her eyes. Beautiful spiral patterns had been etched into the germanium surface by a chemical reaction.

Wong’s curiosity led her on a journey of discovery, revealing something never seen before: hundreds of nearly identical spiral patterns spontaneously forming on a centimeter-square germanium chip. Even more remarkably, small changes in experimental parameters, such as the thickness of the metal film, produced different patterns, including Archimedean spirals, logarithmic spirals, lotus flower shapes, radially symmetric patterns, and more.

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Since it was first synthesized in a post-WW2 American lab in 1949, berkelium has been a rebel of the periodic table, defying quantum mechanics and taking on an extra positive charge that its relatives would never.

Now, a team of scientists from berkelium’s alma mater, Lawrence Berkeley National Laboratory, has wrangled the elusive element into a rare partnership with carbon that will enable them to study it in more detail.

Thanks to challenges involved in producing and safely containing the heavy element, few chemists have had the privilege of dealing with berkelium. Just one gram of the stuff can cost a boggling US$27 million. For this experiment, just 0.3 milligrams of berkelium-249 was required.

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Google is making the biggest ever acquisition in its history by purchasing cloud security company Wiz in an all-cash deal worth $32 billion.

“This acquisition represents an investment by Google Cloud to accelerate two large and growing trends in the AI era: improved cloud security and the ability to use multiple clouds (multicloud),” the tech giant said today.

It added the acquisition, which is subject to regulatory approvals, is meant to provide customers with a “comprehensive security platform” that secures modern IT environments.

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Arizona-based Western Alliance Bank is notifying nearly 22,000 customers their personal information was stolen in October after a third-party vendor’s secure file transfer software was breached.

Western Alliance is a wholly owned subsidiary of Western Alliance Bancorporation, a leading U.S. banking company with over $80 billion in assets.

The bank first revealed in a February SEC filing that the attackers exploited a zero-day vulnerability in the third-party software (disclosed by the vendor on October 27, 2024) to hack a limited number of Western Alliance systems and exfiltrate files stored on the compromised devices.

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Against the backdrop of global democratic backsliding and the rise of authoritarianism, Footnote 1 the nature of authoritarian propaganda and public diplomacy has undergone significant changes. In particular, the transformation of the information environment brought about by the global proliferation of social media has created new avenues for authoritarian states to exert influence over democratic publics. Footnote 2 Notable examples include Russia’s intervention in the 2016 U.S. presidential election Footnote 3 and the dissemination of disinformation regarding COVID-19 by Chinese diplomats. Footnote 4 These actions are referred to as “sharp power,” defined as attempts to “pierce, penetrate, or perforate the information environments in the targeted countries” Footnote 5 with the aim of altering public opinion in democratic countries to favour authoritarian regimes. Footnote 6 Unlike soft power, which appeals to cultural and value-based attractions, sharp power operates as a means to destabilize target countries, weaken their commitment to democracy, and enhance the perceived superiority of authoritarian systems using disinformation and economic incentives. Footnote 7

At the core of sharp power lies the narrative, which is a story-based message that appeals to emotions and values, Footnote 8 and by sustaining attention and fostering emotional resonance, narratives often influence audience behaviour more than objective statistical facts or logical arguments. Footnote 9 Given their persuasive power and emotional impact, narratives are a potent tool for shaping people’s attitudes and behaviours. Political actors leverage narratives not only to strengthen their own position but also to undermine the arguments of opposing forces. Footnote 10 In particular, authoritarian governments use favourable narratives both domestically and internationally to reinforce the legitimacy of their regimes and to emphasise the superiority of authoritarian systems over democratic systems, thereby contributing to a global power shift.

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