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“#The smallest micro-gripper, grown on optical fibers, is operated remotely with light” The optical pliers next to the mandibles of a Formica polyctena ant for comparison (composite scanning electron microscope (SEM) image with added colors). The two jaws (red) close when light is sent through the optical fibers (light blue) that have the diameter of…
“#Shaking light with sound” Integrated silicon nitride photonic chips with aluminium nitride actuators. Credit: Jijun He, Junqiu Liu (EPFL) Piezoelectric materials can convert electrical voltage to mechanical displacement and vice versa. They are ubiquitous in modern wireless communication networks such as in cellphones. Today, piezoelectric devices, including filters, transducers and oscillators, are used in billions…
“#Sensor for non-spoofable biometric identification easily integrated in smart phones” Credit: Holst Centre Holst Center has demonstrated the world’s first organic near-infrared large-area image sensor capable of detecting the unique pattern of veins in a person’s hand via reflected light. The sensor opens the door to highly secure, non-spoofable biometric identification for security-critical applications such…
“#Physicists introduce novel mechanism for electron optics in solid-state systems” Schematic of the electron–hole interference: Electron-like (blue) and hole-like (red) states coexisting in a double quantum well can interfere if the system is suitably biased. Credit: ETH Zurich/D-PHYS Zilberberg group Electrons can interfere in the same manner as water, acoustical or light waves do. When…
“#Underused part of the electromagnetic spectrum gets optics boost from metamaterial” Terahertz metasurface ultra-thin collimator for power enhancement Credit: Takehito Suzuki, TUAT Terahertz radiation, or T-rays, has barely been exploited compared to most of the rest of the electromagnetic spectrum. Yet T-rays potentially have applications in next-generation wireless communications (6G/7G), security systems, biomedicine, and even…
“#Quantum body scanner? What happens when vector vortex beams meet scattering media” Vector vortex beam before (left) and after (right) scattering process in latex bead solution. Credit: I. Gianini, Sapienza Univ. di Roma, doi: 10.1117/1.AP.2.3.036003 SPIE Propagate light through any kind of medium – be it free space or biological tissue – and light will scatter. Robustness to scattering…
“#New technique to study superheavy elements” Laser resonance chromatography will initially be used to investigate lawrencium, element 103. Credit: Mustapha Laatiaoui Superheavy elements are intriguing nuclear and atomic quantum systems that challenge experimental probing as they do not occur in nature and, when synthesized, vanish within seconds. Pushing the forefront of atomic physics research to…
“#New research shows that laser spectral linewidth is classical-physics phenomenon” Credit: CC0 Public Domain New ground-breaking research from the University of Surrey could change the way scientists understand and describe lasers—establishing a new relationship between classical and quantum physics. In a comprehensive study published by the journal Progress in Quantum Electronics, a researcher from Surrey,…
“#Novel ‘dual-resonant method’ in 2-D materials can spur advances in the field of photonics” Photonics, the science of manipulating light, can lead to the development of advanced optical devices, but the efficient generation of photons has remained a challenge until now. Credit: Shutterstock Scientists at Daegu Gyeongbuk Institute of Science and Technology, Korea, have developed…
“#Old X-rays, new vision: A nano-focused X-ray laser” Fig. 1 Schematic of the new method, based on speckles of coherent scattering. Credit: Osaka University Imagine taking movies of the fastest chemical processes, or imaging atomic-scale detail of single virus particles without damaging them. Researchers from Japan have advanced the state-of-the-art in such endeavors, by enhancing…