Transition metal dichalcogenides (TMDs) represent a large family of layered semiconductor materials of the type MX2, with M a transition metal atom (Mo, W, etc.) and X a chalcogen atom (S, Se, or Te). One layer of M atoms is sandwiched between two layers of X atoms.
Scientists from UNSW Sydney have demonstrated a novel technique for creating tiny 3D materials that could eventually make fuel cells like hydrogen batteries cheaper and more sustainable.
In the study published in Science Advances (“Synthesis of hierarchical metal nanostructures with high electrocatalytic surface areas”), researchers from the School of Chemistry at UNSW Science show it’s possible to sequentially ‘grow’ interconnected hierarchical structures in 3D at the nanoscale which have unique chemical and physical properties to support energy conversion reactions.
In chemistry, hierarchical structures are configurations of units like molecules within an organisation of other units that themselves may be ordered. Similar phenomena can be seen in the natural world, like in flower petals and tree branches. But where these structures have extraordinary potential is at a level beyond the visibility of the human eye – at the nanoscale.
True to Moore’s Law, the number of transistors on a microchip has doubled every year since the 1960s. But this trajectory is predicted to soon plateau because silicon — the backbone of modern transistors — loses its electrical properties once devices made from this material dip below a certain size.
Enter 2D materials — delicate, two-dimensional sheets of perfect crystals that are as thin as a single atom. At the scale of nanometers, 2D materials can conduct electrons far more efficiently than silicon. The search for next-generation transistor materials therefore has focused on 2D materials as potential successors to silicon.
But before the electronics industry can transition to 2D materials, scientists have to first find a way to engineer the materials on industry-standard silicon wafers while preserving their perfect crystalline form. And MIT engineers may now have a solution.
What if 2001 had been made a dozen or so years earlier? I used images from https://www.youtube.com/watch?v=EsVD11FE3oQ&feature=related to recreate the famous shuttle/space station docking scene with Strauss’s “Blue Danube”.
Dr Miriam Stoppard writes how the ancient infection leprosy — once such a disfiguring disease that sufferers were exiled — could now help people’s health Leprosy is an ancient infection, common in biblical times, causing such disfiguring disease that sufferers were exiled to isolated colonies miles from anywhere.
Developing new AI is dangerous. But not doing it is even riskier.
We need more civic education on artificial intelligence, says Eileen Donahoe.
What’s more important to fight AI-enabled disinformation: policies or social norms?
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New York Senior Rabbi Josh Franklin, of the Jewish Center of the Hamptons, surprised his congregation earlier this week by delivering a sermon written entirely by Artificial Intelligence (AI.)
The rabbi used the ChatGPT chatbot, a free-to-access AI program launched in November of last year.
After reading the AI-written piece, Rabbi Franklin asked his congregation to guess who had written the sermon. In response, the congregation incorrectly guessed that Rabbi Jonathan Sacks had written the piece.
AI-powered bots like ChatGPT are changing how humans interact with computers, but with its ability to write poems and take exams, some people fear this technology will takeover the job market.
It seems Google is feeling the heat from OpenAI’s ChatGPT. The artificial intelligence-powered chatbot has taken the tech world by storm over the last couple months, as it can provide users with information they’re looking for in an easy-to-understand format. Google sees ChatGPT as a threat to its search business and has shifted plans accordingly over the last several weeks, according to The New York Times.
The report claims CEO Sundar Pichai has declared a “code red” and accelerated AI development. Google is reportedly preparing to show off at least 20 AI-powered products and a chatbot for its search engine this year, with at least some set to debut at its I/O conference in May.
According to a slide deck viewed by the Times, among the AI projects Google is working on are an image generation tool, an upgraded version of AI Test Kitchen (an app used to test prototypes), a TikTok-style green screen mode for YouTube and a tool that can generate videos to summarize other clips. Also in the pipeline are a feature titled Shopping Try-on (perhaps akin to one Amazon has been developing), a wallpaper creator for Pixel phones and AI-driven tools that could make it easier for developers to create Android apps.
