The information is written in optically active atomic defects by a focused ion beam (left) and read using the cathodoluminescence or photoluminescence (right). Credit: M. Hollenbach, H. Schultheiß Team presents new path to long-term data…
This image shows a visualization of the calculated exciton transfer from an upper tetracene layer of a solar cell to the silicon substrate. The electron is shown in blue, and the electron hole in red….
Innovative research led by Professor Daping Chu has produced a liquid crystal-based dielectric metasurface, reducing manufacturing complexities and improving optical device performance, with significant implications for future liquid crystal technologies. Credit: SciTechDaily.com Dielectric metasurfaces, known…
When I temporarily switched from an iPhone to an Android phone last week, I was bracing for a world of hurt. I’ve owned only Apple phones ever since buying the first-generation iPhone in 2007. And,…
Accurate alignment of quantum dots with photonic components is critical for extracting the radiation emitted by the dots. In this illustration, a quantum dot centered in the optical “hotspot” of a circular grating (center dot…
A high-level schematic of the photonic integrated chip, developed by the Gaeta lab, for all-optical optical frequency division, or OFD – a method of converting a high-frequency signal to a lower frequency. Credit: Yun Zhao/Columbia…
With WWDC 2024 now set, Apple continues to work on bringing itself more in line with US government demands. What we don’t know yet is the extent to which these changes will be restricted to…
Synergistic effect of thermal activation and plasma. Credit: POSTECH Imaging being able to wear your smartphone on your wrist, not as a watch, but literally as a flexible band that surrounds around your arm. How…
Scale AI, the data processing company that advertises itself as a way to train generative AI on higher-quality information, has apparently shut down access to its platform in several countries, leaving gig workers in the…
A quantum emitter centrally placed within a hybrid metal-dielectric bullseye antenna, designed for highly directional photon emission. The antenna’s unique structure allows photons to be efficiently coupled directly into an optical fiber, showcasing a pivotal…
