From the Terminator to Spiderman’s suit, self-repairing robots and devices abound in sci-fi movies. In reality, though, wear and tear reduce the effectiveness of electronic devices until they need to be replaced. What is the cracked screen of your mobile phone healing itself overnight, or the solar panels providing energy to satellites continually repairing the damage caused by micro-meteorites?
A DIY microscope made out of LEGO bricks and smartphone lenses could be a powerful learning tool, teaching children not only how to use microscopes, but also how they work.
Seeing is learning: Microscopes are an essential scientific tool, right up there with bunsen burners and petri dishes, which means they’re also essential to any child’s science education.
But even when young people have access to microscopes, they’re often only taught how to use the instruments — put a slide here, look through there — and not how they actually work.
Circa 2018
Digitization results in a high energy consumption. In industrialized countries, information technology presently has a share of more than 10% in total power consumption. The transistor is the central element of digital data processing in computing centers, PCs, smartphones, or in embedded systems for many applications from the washing machine to the airplane. A commercially available low-cost USB memory stick already contains several billion transistors. In the future, the single-atom transistor developed by Professor Thomas Schimmel and his team at the Institute of Applied Physics (APH) of KIT might considerably enhance energy efficiency in information technology. “This quantum electronics element enables switching energies smaller than those of conventional silicon technologies by a factor of 10,000,” says physicist and nanotechnology expert Schimmel, who conducts research at the APH, the Institute of Nanotechnology (INT), and the Material Research Center for Energy Systems (MZE) of KIT. Earlier this year, Professor Schimmel, who is considered the pioneer of single-atom electronics, was appointed Co-Director of the Center for Single-Atom Electronics and Photonics established jointly by KIT and ETH Zurich.
In Advanced Materials, the KIT researchers present the transistor that reaches the limits of miniaturization. The scientists produced two minute metallic contacts. Between them, there is a gap as wide as a single metal atom. “By an electric control pulse, we position a single silver atom into this gap and close the circuit,” Professor Thomas Schimmel explains. “When the silver atom is removed again, the circuit is interrupted.” The world’s smallest transistor switches current through the controlled reversible movement of a single atom. Contrary to conventional quantum electronics components, the single-atom transistor does not only work at extremely low temperatures near absolute zero, i.e.-273°C, but already at room temperature. This is a big advantage for future applications.
The single-atom transistor is based on an entirely new technical approach. The transistor exclusively consists of metal, no semiconductors are used. This results in extremely low electric voltages and, hence, an extremely low energy consumption. So far, KIT’s single-atom transistor has applied a liquid electrolyte. Now, Thomas Schimmel and his team have designed a transistor that works in a solid electrolyte. The gel electrolyte produced by gelling an aqueous silver electrolyte with pyrogenic silicon dioxide combines the advantages of a solid with the electrochemical properties of a liquid. In this way, both safety and handling of the single-atom transistor are improved.
In the 2002 science fiction blockbuster film “Minority Report,” Tom Cruise’s character John Anderton uses his hands, sheathed in special gloves, to interface with his wall-sized transparent computer screen. The computer recognizes his gestures to enlarge, zoom in, and swipe away. Although this futuristic vision for computer-human interaction is now 20 years old, today’s humans still interface with computers by using a mouse, keyboard, remote control, or small touch screen. However, much effort has been devoted by researchers to unlock more natural forms of communication without requiring contact between the user and the device. Voice commands are a prominent example that have found their way into modern smartphones and virtual assistants, letting us interact and control devices through speech.
Hand gestures constitute another important mode of human communication that could be adopted for human-computer interactions. Recent progress in camera systems, image analysis and machine learning have made optical-based gesture recognition a more attractive option in most contexts than approaches relying on wearable sensors or data gloves, as used by Anderton in “Minority Report.” However, current methods are hindered by a variety of limitations, including high computational complexity, low speed, poor accuracy, or a low number of recognizable gestures. To tackle these issues, a team led by Zhiyi Yu of Sun Yat-sen University, China, recently developed a new hand gesture recognition algorithm that strikes a good balance between complexity, accuracy, and applicability.
Xiaomi Mi 12 Pro Charging
The Xiaomi Mi 12 Pro, which will be released on December 28, is the first smartphone equipped with the Surge P1. It supports wired 120W charging, 50W wireless charging, and 10W wireless reverse charging. Xiaomi said that the 120W charging technology of the Xiaomi Mi 12 Pro has two modes: low-temperature mode, “the temperature is only 37 degrees Celsius, and the body temperature is comfortable”; the fast mode.
Meta surely won’t have a free run.
Chinese search engine giant Baidu has launched its own version of the metaverse, called Xi Rang, South China Morning Post (SCMP) reported. A video released by the media outlet shows users experiencing the metaverse through virtual reality (VR) headsets and handheld controllers.
Following Facebook’s rebranding to Meta, the word Metaverse has quickly become a commonly used term. Last month, Microsoft had declared how it planned to integrate the metaverse into its existing products. As with all things tech, one would expect U.S. companies to run ahead of the rest of the world, but Baidu is not going to let that happen so easily.
At first glance, Xi Rang looks a bit primitive as compared to legless floating avatars we saw in Horizon World’s preview earlier this month. However, the videos are likely from the public demonstrations held previously and could see more improvements in the final release. Even if that does not happen immediately, Baidu’s version of the metaverse will remain accessible to the larger public as it can be accessed via smartphones and computers, and not just VR headsets alone as in the case of Meta.
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Europe will soon produce a strategically vital component in the modern global economy as US semiconductor giant Intel chooses the site for a new cutting-edge chip factory.
Recent problems in global supply chains have highlighted the fundamental importance of semiconductors, which are used in a growing number of products including cars, TVs and smartphones.
Keen demand and the closure of semiconductor plants, particularly in Asia, due to pandemic disruptions led to a global chip shortage and forced car manufacturers such as Ford, Nissan and Volkswagen to scale back production.
Dystopian nightmare or a simple convenience? A Swedish company implanting microchips under the skin has is promoting its devices for use as a COVID-19 health pass in a country with thousands of early adopters.
Amanda Back uses her smartphone to scan a microchip implanted in her hand to reveal her health pass.