Category Physics

Lights could be the Future of the Internet and Data Transmission

led bulbs on grid spelling 01

Fast data transmissions could be delivered in homes and offices through light-emitting diodes (LED) bulbs, complementing existing communication technologies and networks.

The future’s new internet technologies are being rapidly refined by academics and LED-based communication links are expected to be extensively used in numerous emerging services and scenarios, including Light-fidelity (Li-Fi), underwater communications, moderate- to high-speed photonic interconnects and various ‘Internet of Things’ (IoT) devices.

A new study led by the University of Surrey and University of Cambridge has investigated how to release high-speed photonic sources using metal-halide perovskites...

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AI can ask another AI for a second opinion on medical scans

AI-annotated medical image showing enhanced tumour, tumour core and edema regions

Researchers at Monash University have designed a new co-training AI algorithm for medical imaging that can effectively mimic the process of seeking a second opinion.

Published recently in Nature Machine Intelligence, the research addressed the limited availability of human annotated, or labelled, medical images by using an adversarial, or competitive, learning approach against unlabelled data.

This research, by Monash University faculties of Engineering and IT, will advance the field of medical image analysis for radiologists and other health experts.

PhD candidate Himashi Peiris of the Faculty of Engineering, said the research design had set out to create a competition between the two components...

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Renewable Solar Energy can help Purify Water, the Environment

Schematic diagram of (left) the formation of (PVF-CNT)/TiO2 NR electrodes. PVF-functionalized CNT was deposited on the NR arrays by electrodeposition. (Right) The proposed solar-driven PEC separation of heavy metal oxyanions is displayed

Chemists led by Beckman researcher Xiao Su have demonstrated that water remediation can be powered in part — and perhaps even exclusively — by renewable energy sources. Using electrochemistry to separate different particles within a solution (also known as electrochemical separation) is an energy-efficient strategy for environmental and water remediation: the process of purifying contaminated water...

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Breakthrough Metasurface Materials Tech Unleashes Enhanced Control for Advanced Telecommunications and Beyond

Breakthrough metasurface materials tech unleashes enhanced control for advanced telecommunications and beyond
Dual-resonance unit cell with three copper layers on a printed circuit board and a backplane. The front and back of the unit cell are also shown, which, respectively, host a varactor and series varactor-resistor pair. Credit: Physical Review Applied (2023). DOI: 10.1103/PhysRevApplied.20.014004

Cities can be obstacle courses for communications signals. A radio signal must travel from a cell phone to a router to a cell tower, and onward to its recipient—all while bouncing between walls, buildings and other structures. When it hits an obstacle, the radio wave gets scattered, diminishing the signal. This in turn reduces the bandwidth. At the same time, the signal must compete with the bandwidth needs of numerous other devices in the area...

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