Researchers at Eindhoven University of Technology (Tu/e) and the Dutch Institute for Fundamental Energy Research (DIFFER), both in the Netherlands, have developed a new type of low-energy, nanoscale laser that transmits in all directions. The key to this omnidirectional light...
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New Optical Memory Cell Achieves Record Data-Storage Density
Researchers have demonstrated a new technique that can store more optical data in a smaller space than was previously possible on-chip. This technique improves upon the phase-change optical memory cell, which uses light to write and read data, and could...
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Laser Micromachining For Efficient, Biocompatible Waveguides
A team of researchers from the École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland has demonstrated a new technique for fabricating compact, low-loss optical waveguides in a polydimethylsiloxane (PDMS) slab. The method uses a femtosecond writing laser to initiate two-photon...
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Moving 2D Circuits To Any Smooth Surface Could Open Way For Next-Gen Sensors
Atom-flat sensors, made from 2D materials, could be used to monitor performance without adding weight or hindering signal flow if they could be seamlessly integrated onto surfaces with different geometries where detection for near-field signal is desired. 2D materials are...
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Lidar Characterizes Mosquitoes To Improve Disease Understanding
Physicists are exploring laser-based technology to shine a light on the subtlest features of mosquito activity and better track populations that may carry a viral threat. With more than 2500 different species of mosquitoes known on Earth today, many challenges...
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New Discovery Improves Use Of Optical Tweezers
This year’s Nobel Prize in Physics, awarded for discoveries in laser physics, recognizes optical tweezers. Now researchers from the University of Gothenburg have developed a method that greatly simplifies and improves the use of optical tweezers. “The idea came to...
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Terahertz Laser For Sensing And Imaging Outperforms Its Predecessors
A terahertz laser designed by MIT researchers is the first to reach three key performance goals at once — high constant power, tight beam pattern, and broad electric frequency tuning — and could thus be valuable for a wide range...
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Battery-Free Optical Wearable Device Enables Personalized Phototherapy
Recognizing the need for a more-accurate and personalized way to measure light exposure, a team of researchers at the Northwestern University Feinberg School of Medicine and the Northwestern University McCormick School of Engineering (both in Chicago, IL) has developed a...
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Color Sensors Based On Microlens Are Cheaper To Make
The Fraunhofer Institute for Integrated Circuits (IIS) in Erlangen and the Fraunhofer Institute for Silicate Research (ISC) in Würzburg, both Germany, have co-developed novel color sensors with a special microlens arrangement. The sensors, developed in the FOWINA project, can be...
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Covert Infrared Image Encoding – Hiding In Plasmonic Sight
Plasmonic materials can uniquely control the electromagnetic spectrum due to nano-scale surface architecture. Recent advances in nanotechnology and materials science and their combined capacity to develop controlled geometries at the nano-scale continue to evolve, as observed with optical properties of...
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