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On-chip optical antennas remove data limits


On-chip optical antennas remove data limits
March 02, 2021 //
By Jean-Pierre Joosting
Latest research throws wide open the amount of data or information that can be simultaneously transmitted by a single light source.
A new method of harnessing the properties of light waves that can radically increase the amount of data they carry has been discovered by researchers at the University of California, Berkeley. They demonstrated the emission of discrete twisting laser beams from antennas made up of concentric rings roughly equal to the diameter of a human hair, small enough to be placed on computer chips.
The research, reported in a paper published in the journal Nature Physics, throws wide open the amount of information that can be multiplexed, or simultaneously transmitted, by a coherent light source. Previously, there had been fundamental limits to the number of coherent twisted lightwaves that could be directly multiplexed. ....

United States , Chen Ming , Babak Bahari , Aboubacar Kant , University Of California , Uc Berkeley Department Of Electrical Engineering , Computer Sciences , Nature Physics , Chenming Hu Associate Professor , Electrical Engineering , Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley Lab , ஒன்றுபட்டது மாநிலங்களில் , சென் மிங் , பாபக் பஹாரி , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , அக் பெர்க்லி துறை ஆஃப் மின் பொறியியல் , கணினி அறிவியல் , இயற்கை இயற்பியல் , மின் பொறியியல் , பொருட்கள் அறிவியல் பிரிவு , லாரன்ஸ் பெர்க்லி தேசிய ஆய்வகம் , பெர்க்லி ஆய்வகம் ,

New Device Detects Which Hand Gesture You Want to Make


New Device Detects Which Hand Gesture You Want to Make
Imagine typing on a computer without a keyboard, playing a video game without a controller or driving a car without a wheel.
That’s one of the goals of a new device developed by engineers at the University of California, Berkeley, that can recognize hand gestures based on electrical signals detected in the forearm. The system, which couples wearable biosensors with artificial intelligence (AI), could one day be used to control prosthetics or to interact with almost any type of electronic device.
“Prosthetics are one important application of this technology, but besides that, it also offers a very intuitive way of communicating with computers.” said Ali Moin, who helped design the device as a doctoral student in UC Berkeley’s Department of Electrical Engineering and Computer Sciences. “Reading hand gestures is one way of improving human-co ....

United States , Donaldo Pedersen , Ali Moin , Jan Rabaey , University Of California , Uc Berkeley Department Of Electrical Engineering , Computer Sciences , Electrical Engineering , Ana Arias , Distinguished Professor , ஒன்றுபட்டது மாநிலங்களில் , டொனால்டோ பெடர்‌ஸெந் , அலி மாய்ந் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , அக் பெர்க்லி துறை ஆஃப் மின் பொறியியல் , கணினி அறிவியல் , மின் பொறியியல் , அனா அரியாஸ் , புகழ்பெற்ற ப்ரொஃபெஸர் ,