Tag Archive for 'Laser'

This mosaic (upper right) shows a close-up view of the rock target named ‘Yeehgo’ from the SuperCam instrument on NASA’s Perseverance rover on Mars. The component images were taken by SuperCam’s Remote Micro-Imager (RMI) on March 7, 2021. To be compatible with the rover’s software, ‘Yeehgo’ is an alternative spelling of ‘Yéigo,’ the Navajo word for diligent. The target is 3.325 m (10.9 feet) from the rover. Each of the two images in the mosaic shows a field of view 6.2 cm (2.5 inches) in diameter. Perseverance’s Navigation Cameras (Nav Cam) and Mastcam-Z instrument also took images of that area at the same time to provide multiple views of the rock target. Image credit: NASA / JPL-Caltech / LANL / CNES / CNRS / ASU / MSSS.

Perseverance Records Sound of Its Rock-Zapping Laser Instrument

Mar 12, 2021 by News Staff

Early data from the SuperCam instrument aboard NASA’s Perseverance rover — including the first audio of laser zaps on another planet — are...

Detail of a circular mound village called Dona Maria with ‘twin’ village. Image credit: Iriarte et al., doi: 10.5334/jcaa.45.

Archaeologists Find Ancient Villages Laid Out Like Clock Face in Amazonia

Dec 11, 2020 by News Staff

Using a helicopter-based lidar mapping tool, an international team of scientists led by University of Exeter archaeologists has discovered a network of...

The Unruh effect predicts a thermal response for an accelerated detector moving through the vacuum. Gooding et al. propose an interferometric scheme to observe an analogue of the circular Unruh effect using a localized laser coupled to a Bose-Einstein condensate. Image credit: University of Nottingham.

Physicists Propose New Method for Observing Hypothetical Unruh Effect

Nov 23, 2020 by News Staff

The Unruh effect was described by Stephen Fulling in 1973, Paul Davies in 1975, and William Unruh in 1976. Sometimes called the Fulling-Davies-Unruh effect,...

Conceptual representation showing a glass containing two liquids of water separated by a thin interface; the bottom liquid is dense than the liquid at the top and, thus, shows that it is composed of water molecules closely packed. Image credit: Jerker Lokrantz / Anders Nilsson.

Supercooled Water Can Exist in Two Liquid States, Study Confirms

Nov 20, 2020 by News Staff

The usual liquid state of water that we are all familiar with corresponds to liquid water at normal temperatures. However, a new study published in the...

Experimental configuration and principles of optical vortex beam for discharge control and guidance: at first, microparticles are prepared and placed in an enclosed container with vertically aligned electrodes (left); an applied electric field through the container lifts the particles by electrostatic forces; some of the lifted particles cross the hollow core doughnut-shaped CW laser beam and get trapped in it; the vortex laser beam is guides particles in the mid-air: particles from a container are transported into a parallel plate chamber through a hole in one of the electrodes; in addition, particles are heated by the same laser beam thus creating a thermal channel between the electrodes that results in a subthreshold electrical breakdown; the inset shows a photograph of the experimental setup with particles trapped in the beam. Image credit: Shvedov et al., doi: 10.1038/s41467-020-19183-0.

‘Tractor’ Laser Beam Has Potential to Control Path, Direction of Lightning

Nov 17, 2020 by News Staff

An international team of researchers has proposed and demonstrated an efficient approach for triggering, trapping and guiding electrical discharges in...

Schematic layout of the KEK Isotope Separation System. Image credit: Wako Nuclear Science Centre, High Energy Accelerator Research Organization.

Physicists Produce World’s First Beam of Neutron-Rich, Radioactive Tantalum Ions

Nov 11, 2020 by News Staff

Using a new mass-separator of radioactive isotopes, called the KEK Isotope Separation System (KISS), which is developed and operated by the Wako Nuclear...

In the experiment by Li et al., atoms of rubidium-87 are first pre-cooled and then transported to the main test area, which is a custom-made vacuum chamber; there they are cooled to temperatures of just a few microkelvins. Image credit: Li et al., doi: 10.1103/PhysRevLett.125.150501.

Physicists Demonstrate Controlled Transport of Stored Light

Oct 19, 2020 by News Staff

Controlled manipulation, storage, and retrieval of quantum information are essential for quantum communication and computing. Quantum memories for light,...

Kringle et al captured reversible changes in the structure of supercooled water using pulsed laser heating and infrared spectroscopy. Image credit: Timothy Holland, Pacific Northwest National Laboratory.

Supercooled Water is Two Liquids in One, Study Shows

Sep 18, 2020 by News Staff

The first-ever measurements of liquid water at temperatures between 135 K (minus 138.15 degrees Celsius, or minus 216.7 degrees Fahrenheit) and 235 K (minus...

Carbide Planets May Be Made Of Silica and Diamonds

Sep 11, 2020 by News Staff

Extrasolar planets hosted by stars with sufficiently high carbon-to-oxygen ratios could be made of diamonds and silica, according to new research by Arizona...

Miskin et al built microsopic robots that consist of a simple circuit made from silicon photovoltaics and four electrochemical actuators; when laser light is shined on the photovoltaics, the robots walk. Image credit: Miskin et al, doi: 10.1038/s41586-020-2626-9.

Researchers Create Laser-Activated Walking Microrobots

Aug 27, 2020 by News Staff

A team of scientists from Cornell University and the University of Pennsylvania has developed a new class of microscopic robots that incorporate semiconductor...

Branched flow pattern shown on top of the interference color pattern generated by weak white light, making it possible to observe the potential landscape together with the branched flow. Image credit: Patsyk et al, doi: 10.1038/s41586-020-2376-8.

Physicists Observe Branched Flow of Light

Jul 3, 2020 by News Staff

Physicists from the Technion-Israel Institute of Technology and the University of Central Florida have experimentally observed optical branched flow in...

Experimental apparatus used to synthesize pionic helium atoms at the Paul Scherrer Institute. Image credit: ASACUSA Collaboration, CERN.

CERN Physicists Create Atoms of Pionic Helium

May 13, 2020 by News Staff

Physicists from the ASACUSA (Atomic Spectroscopy And Collisions Using Slow Antiprotons) Collaboration at CERN have successfully synthesized and studied...

Metasurface laser produces super-chiral light with orbital angular momentum up to 100. Image credit: University of the Witwatersrand.

Newly-Developed Metasurface-Enhanced Laser Emits Super-Chiral Light

Apr 28, 2020 by News Staff

A team of scientists from the University of the Witwatersrand, Harvard University and the National University of Singapore has come up with a new metasurface-enhanced...

With wall thicknesses of about 160 nm, a closed-cell, plate-based nanolattice structure is the first experimental verification that such arrangements reach the theorized limits of strength and stiffness in porous materials. Image credit: Cameron Crook & Jens Bauer, University of California, Irvine.

Newly-Developed Carbon Nanolattices are Stronger than Diamonds

Apr 14, 2020 by News Staff

An international team of scientists has created carbon nanolattices — constructed from closed-cell plate-architectures — that are stronger...

Laser-cooled atom cloud viewed through microscope camera. Image credit: University of Otago.

Physicists Observe Three-Atom Collisions in Ground-Breaking Experiments

Feb 24, 2020 by News Staff

A team of physicists in New Zealand has held individual atoms of rubidium in place and observed previously unseen interactions. Laser-cooled atom cloud...

Left: a tiny bead struck by a laser produces optical modes that circulate around the interior of the bead. Right: a simulation of how the optical field inside a 5-micron bead is distributed. Image credit: Berkeley Lab.

Researchers Create Nanoparticle-Based Microlasers

Jan 3, 2020 by News Staff

Researchers from the Molecular Foundry at Lawrence Berkeley National Laboratory have found a way to convert nanoparticle-coated microscopic plastic beads...

Electrons move between two arms of a metallic nanoantenna driven by a single-cycle light wave. Image credit: University of Konstanz.

Scientists Use Light to Transport Electrons at Ultrafast Speeds

Dec 27, 2019 by News Staff

A research team led by University of Konstanz scientists has demonstrated that light waves can be used to transport electrons at sub-femtosecond speeds...

Conventional ultrasound verifies soft- and hard-tissue features detected in laser ultrasound (LUS) imaging on the forearm: (a) single time trace from LUS imaging of a volunteer’s forearm; (b) photograph of a volunteer’s forearm region, imaged using LUS and conventional ultrasound; a green tracking laser from the LDV is also visible; (c) reconstructed LUS image of a volunteer’s forearm with multiple visible tissue layers; (d) matching conventional ultrasound image of the volunteer’s forearm using a GE Logiq E9 system and a 9 MHz linear probe confirming features detected in the LUS image. Image credit: Zhang et al, doi: 10.1038/s41377-019-0229-8.

Novel Laser Ultrasound Technique Doesn’t Require Contact with Patient’s Body

Dec 24, 2019 by News Staff

The noncontact laser ultrasound technique, developed by a team of MIT engineers, leverages an eye- and skin-safe laser system to remotely image the inside...

The CHIMERA printer uses low-power continuous wave lasers to create holograms on a highly sensitive photomaterial. Image credit: Yves Gentet.

Researchers Develop Third-Generation Digital Holographic Printer

Nov 5, 2019 by News Staff

A duo of researchers from France and South Korea has developed a third-generation holographic printing system that produces 3D holograms with an unprecedented...

The nanoscale heat engine. Image credit: John Goold, Trinity College Dublin.

World’s Tiniest Engine Created

Aug 23, 2019 by News Staff

A team of researchers from Trinity College Dublin and the Universität Mainz has developed the world’s smallest engine. The nanoscale heat engine. Image...

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