Credit: Matt Allinson, Aalto University
Researchers at Aalto University have developed a new device for spintronics. The results have been published in the journal
Nature Communications, and mark a step towards the goal of using spintronics to make computer chips and devices for data processing and communication technology that are small and powerful.
Traditional electronics uses electrical charge to carry out computations that power most of our day-to-day technology. However, engineers are unable to make electronics do calculations faster, as moving charge creates heat, and we re at the limits of how small and fast chips can get before overheating. Because electronics can t be made smaller, there are concerns that computers won t be able to get more powerful and cheaper at the same rate they have been for the past 7 decades. This is where spintronics comes in.
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IMAGE: Composite image of the SKA-Low telescope in Western Australia. The image blends a real photo (on the left) of the SKA-Low prototype station AAVS2.0 which is already on-site, with an. view more
Credit: ICRAR, SKAO
The federal government will invest $50 million to establish a centre in Perth to process and analyse data from the Square Kilometre Array (SKA) radio telescope.
A global collaboration of 16 countries, the SKA will be one of the world s largest science facilities, exploring the entire history and evolution of the Universe, and uncovering advances in fundamental physics.
Construction of the telescope is expected to begin at the end of this year. Initially, it will comprise 131,072 low-frequency Christmas tree-shaped antennas located in WA s remote Murchison region and 197 mid-frequency dish-shaped antennas hosted in South Africa s Karoo region.
200031, Researchers led by Professor Baohua Jia at Swinburne University of Technology, Victoria, Australia, Professor Cheng-Wei Qiu at National University of Singapore, Singapore and Professor Tian Lan at Beijing Institute of Technology, Beijing, China considered the generation of super-resolved optical needle and multifocal array using graphene oxide metalenses.
Ultrathin and lightweight, metalenses are becoming increasingly significant for their use in photonic chips, biosensors and micro imaging systems such as smart phone cameras.
Compared to conventional lenses, metalenses can improve the image quality of current cameras, by enhancing resolution and removing spherical and chromatic aberrations. A single ultrathin (less than the thickness of 1/100 of a human hair) metalens element can be used instead of the multiple element imaging systems required by conventional lenses. Due to the unique light-matter interaction in a confined 2D plane, 2D materials are ideal for use with met
Credit: POSTECH
Gas accidents such as toxic gas leakage in factories, carbon monoxide leakage of boilers, or toxic gas suffocation during manhole cleaning continue to claim lives and cause injuries. Developing a sensor that can quickly detect toxic gases or biochemicals is still an important issue in public health, environmental monitoring, and military sectors. Recently, a research team at POSTECH has developed an inexpensive, ultra-compact wearable hologram sensor that immediately notifies the user of volatile gas detection.
A joint research team led by Professor Junsuk Rho of departments of mechanical and chemical engineering and Dr. Inki Kim of Department of Mechanical Engineering with Professor Young-Ki Kim and Ph.D. candidate Won-Sik Kim of Department of Chemical Engineering at POSTECH has integrated metasurface with gas-reactive liquid crystal optical modulator to develop a sensor that provides an immediate visual holographic alarm when harmful gases are detected. The findin
The findings were published in
Nature Machine Intelligence by Mueller and a former Ph.D. student, lead author Xiaoyan Yin. I have long admired bats for their uncanny ability to navigate complex natural environments based on ultrasound and suspected that the unusual mobility of the animal s ears might have something to do with this, said Mueller.
A new model for sound location
Bats navigate as they fly by using echolocation, determining how close an object is by continuously emitting sounds and listening to the echoes. Ultrasonic calls are emitted from the bat s mouth or nose, bouncing off the elements of its environment and returning as an echo. They also gain information from ambient sounds. Comparing sounds to determine their origin is called the Doppler effect.