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This Sunday is the 2021 International Day of Light, which is held on 16 May every year to mark the first successful operation of the laser in 1960 by physicist and engineer Theodore Maiman.   To celebrate the occasion, why not listen to the latest episode of the Physics World Weekly podcast, find out how far-ultraviolet light could help with the next pandemic, or see how solar cells are closing in on 50% efficiency.   We've also got a whole lot more light-based content on this Day of Light collection page. Matin Durrani, editor-in-chief, Physics World

THIS WEEK'S HEADLINES

Nanomaterials | Research update 'Crystal critters' self-eject from salty solution Newly observed phenomenon might be harnessed to prevent mineral fouling in water pipes Biomedical devices | Research update AI-powered platform analyses blood vessel abnormalities An artificial intelligence velocimetry framework combined with a microfluidic chip quantifies blood flow characteristics to help understand vascular disease Quantum computing | Research update Quantum bits make artificial spiking neurons Researchers use biologically inspired system to classify entangled quantum states Biomedical devices | Research update Tiny sensor monitors organ oxygenation deep inside the body Wireless implant could non-invasively measure a transplanted organ's oxygen level, enabling early detection of dysfunction Dark matter and energy | Research update Exoplanets could be used as dark-matter detectors Elusive substance is expected to warm up exoplanets Biomedical devices | Research update Using breath to detect lung cancer Researchers in China combine breath tests, mass spectrometry and a support vector machine to detect lung cancer

EXPLORE MORE

Astronomy and space, Lasers | Podcast Observing the weather on brown dwarfs, powerful laser puts matter under extreme conditions This podcast celebrates the UNESCO International Day of Light Mathematics and computation, Particle and nuclear | Interview AI and particle physics: a powerful partnership Jessica Esquivel explores the beneficial collaboration between artificial intelligence and particle physics that is advancing both fields Mathematics and computation | Careers Ask me anything: Jony Hudson – 'I love the incredibly fast pace of progress in machine learning' Jony Hudson is a research engineer working on the development of artificial intelligence at DeepMind Mathematics and computation | Feature The Turing Test 2.0 Juanita Bawagan discovers how modern algorithms have transformed our understanding of the "Turing Test" and what it means for artificial intelligence

OUR LATEST WEBINARS You can explore our full selection of webinars on our website.

Medical physics, Sponsored | Webinar Automated QA in clinical environment: RadCalc set up for clinics and remote access Join the audience for a live webinar on 2 June 2021 sponsored by LAP GmbH Laser Applikationen Medical physics, Sponsored | Webinar Measuring geometric distortion with sub-millimeter accuracy in MRgRT QA using the QUASARTM MRID3D Join the audience for a live webinar on 26 May 2021 sponsored by Modus QA Materials, Sponsored | Webinar Novel carbon electrodes for neurochemistry Join the audience for a live webinar on 26 May 2021 sponsored by The Electrochemical Society Instrumentation and measurement, Sponsored | Webinar Quantum-based pressure and vacuum measurements and NIST on a chip Join the audience for a live webinar on 8 June 2021 sponsored by Agilent Vacuum Products and Inficon, in partnership with IUVSTA

INNOVATION SHOWCASES You can explore our full selection of innovation showcases on our website.

Edinburgh Instruments application note: Raman microscopy of graphene   Confocal Raman microscopy can be used for determining the number of layers of graphene in a sample. This application note shows how Raman mapping can produce images that reveal areas of the sample which are high in disorder. The RM5 Raman Microscope's high spatial and spectral resolution allows for high-quality graphene analysis, the perfect tool for any materials scientist.

VACANCIES FROM PHYSICS WORLD JOBS

Researcher – Quantitative Finance, France/US Locum Associate or Senior Editor (Electronics), UK, Germany, US, China PhD Fellows in Bridging Quantum and Continuum Mechanics, Luxembourg Lead Engineer for the Instrument BEER, Sweden Cryo Engineer, US Service Technician, US Software Systems Engineer, UK Superconducting RF and Cryogenics Division Director, US Nuclear Science Division Director, US Physicist, Computer Scientist or Similar, Germany

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