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Physicist Develops New Laser Technique to Study Electronic Properties

It’s often said that necessity is the mother of invention. Such was the case for Ames Laboratory physicist Adam Kaminski who took a challenge he was facing and turned it into a new solution that will help advance his research.Adam Kaminski’s homemade laser-powered light source. (Ames Laboratory)

Posted in: Articles, News, Lasers & Laser Systems

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Theory Turns into Reality for Nonlinear Optical Metamaterials

A research team has realized one of the long-standing theoretical predictions in nonlinear optical metamaterials: creation of a nonlinear material that has opposite refractive indices at the fundamental and harmonic frequencies of light. Such a material, which doesn’t exist naturally, had been predicted for nearly a decade.Metamaterial waveguide located at the center of a silicon chip, wired to an external circuit. A research team at Georgia Tech has created a nonlinear material that has opposite refractive indices at the fundamental and harmonic frequencies of light. (John Toon, Georgia Tech)

Posted in: Articles, News, Optical Components

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Algorithm Magnifies Motions Indiscernible to the Naked Eye

MIT has been investigating techniques for amplifying movements captured by video, but indiscernible to the human eye. The algorithms can make the human pulse visible and even recover intelligible speech from the vibrations of objects filmed through soundproof glass. A new version of the algorithm can amplify small motions even when they’re contained within objects executing large motions. So, for instance, it could make visible the precise sequence of muscle contractions in the arms of a baseball player swinging the bat, or in the legs of a soccer player taking a corner kick.

Posted in: News

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Robots Learn to Observe, Adjust Their Force, and React


When robots and humans have to work together, it often leads to problems. Researchers on the CogIMon project want to teach robots to understand the forces during the movement of an object, and how to appropriately react to changes in weight or contact with the object while carrying it. Humans have no problem estimating the weight of an object, but robots lack this ability.Researchers used the humanoid robot prototype COMAN (COmpliant huMANoid platform) in the CogIMon project. (Bielefeld University)

Posted in: News, Robotics

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Tests Show Football Player Concussions are Caused by Different Head Motions

When modern football helmets were introduced, they all but eliminated traumatic skull fractures caused by blunt force impacts. Mounting evidence, however, suggests that concussions are caused by a different type of head motion, namely brain and skull rotation. Stanford engineers have produced a collection of results that suggest that current helmet-testing equipment and techniques are not optimized for evaluating these additional injury-causing elements.

Posted in: News

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Simulations Reveal Near-Frictionless Material

Scientists from Argonne National Laboratory used simulations to identify and improve a new mechanism for reducing friction. The resulting hybrid material exhibited superlubricity at the macroscale.

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NASA System Would Enable Unmanned Aircraft to Fly in US Airspace

NASA, working with government and industry partners, is testing a system that would make it possible for unmanned aircraft to fly routine operations in United States airspace. The tests engage the core air traffic infrastructure and supporting software components through a live and virtual environment to demonstrate how an autonomous aircraft interacts with air traffic controllers and other air traffic.

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