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nanoscale News
Researchers' 2D Waveguides Enable Dark Exciton Study
WASHINGTON, D.C., Feb. 28, 2024 — A team at the U.S. Naval Research Laboratory (NRL), in collaboration with Kansas State University, has developed slab waveguides based on the two-dimensional material hexagonal boron nitride. NRL researchers also developed 3D electromagnetic models of the waveguides. The modeling results provide a toolkit for designing future 2D devices that use slab waveguides. The technology has applications in optoelectronics and enables the study of dark excitons. 2D materials are a class of materials which
Blue Light Technique Will Advance Nanoscale Tech
PROVIDENCE, R.I., April 21, 2023 — Researchers at Brown University have developed an approach to scattering-type scanning near-field microscopy (s-SNOM) that uses blue light to enable measurement of electrons in semiconductors, as well as other nanoscale materials. The findings,...
Light-Driven Microdrones Offer Nanosensing, Motion Possibilities
WÜRZBURG, Germany, April 26, 2022 — Physicists at the University of Würzburg have used light to propel micrometer-size objects in an aqueous environment and control them precisely on a surface with all three degrees of freedom — two translational degrees and a rotational...
Tweezers Enable Dynamic Control of Single Nanoscale Quantum Objects
NASHVILLE, Tenn., Aug 9, 2021 — Led by Justus Ndukaife, assistant professor of electrical engineering, Vanderbilt researchers have introduced an approach for trapping and moving a single colloidal nanodiamond with nitrogen-vacancy center using a low-power laser beam. The width of...
Research Reveals Surprising Behaviors of Nanoparticles
ALBUQUERQUE, N.M., May 20, 2021 — A collaboration between scientists from the University of New Mexico, Los Alamos National Laboratory, and the Institute of Optics (Spain) has developed a framework that enables the efficient and simple description of the thermalization dynamics of...
Nanoparticle Lasing Breakthrough Reduces Tissue Damage
SYDNEY, Dec. 4, 2020 — Researchers from the University of Technology Sydney (UTS) have demonstrated how a microcavity laser can produce energy-saving and user-safe laser emissions requiring low pump power. The work has implications for nanoscale biological applications....
Biologically Controlled Lasing Could Lead to Nanoscale Functionality
SINGAPORE, Nov. 16, 2020 — An international research team at Nanyang University has demonstrated the concept of a switchable microlaser controlled by the organic biomolecule DNA hybridization process. The study could lead to the development of programmable photonic devices at...
Light-Driven Quantum Network Promises Faster, Enhanced Communication
ROCHESTER, N.Y., Nov. 5, 2020 — Using magnetic and semiconducting materials, researchers at the University of Rochester and Cornell University designed a nanoscale node capable of using laser light to emit and accept photons to interact with other nodes. Compared to current...
Engineers Adapt 2D 'Sandwich' for Surface-Enhanced Raman Spectroscopy
HOUSTON, May 18, 2020 — Tests at Rice University’s Brown School of Engineering of a two-dimensional Janus compound showed it could be an effective and universal platform for improving the detection of biomolecules via surface-enhanced Raman spectroscopy (SERS)....
Nanosize Tin ‘Bubbles’ Could Provide Low-Cost Way to Generate EUV Light
TOKYO, April 17, 2020 — Scientists at Tokyo Institute of Technology (Tokyo Tech) have generated low-cost extreme ultraviolet (EUV) light by creating tin thin-film spheres using a polymer electrolyte “soap bubble” as a template and irradiating it with a laser....
VR Classroom Immerses Students in Nanotechnology
TUCSON, Ariz., Feb. 11, 2020 — In a custom-developed virtual reality (VR) classroom at the University of Arizona, students can pick up and examine scaled-up versions of nanosize objects. The classroom is part of Nano 2020, a University of Arizona-led initiative to develop...
Nanoscale Patterning of Light Manipulates Macroscale Objects
PASADENA, Calif., March 21, 2019 — By creating a distinct nanoscale patterning on the surface of an object, researchers at the California Institute of Technology (Caltech) have designed a way to levitate and propel objects using only light. The patterning interacts with light in such...
Supercrystal Exhibits a Stable State Over Time
STATE COLLEGE, Pa., March 19, 2019 — A supercrystal created by researchers from Pennsylvania State University and Argonne National Laboratory represents a new state of matter with long-term stability. The goal of the research team, which also includes researchers from the University of...
Hyperspectral Imager Will Communicate Climate Changes from Space
ESPOO, Finland, Dec. 24, 2018 — The photos from a tiny IR hyperspectral camera, taken from aboard a nanosatellite that has now reached space, could provide information useful for managing the effects of climate change. The Reaktor Hello World nanosatellite was launched into space...
Device for Measuring Nanoparticles Could Aid in Quantum Measurement
VIENNA, Dec. 19, 2018 — A new device that can measure and control an optically trapped nanoparticle with extreme sensitivity has been developed by researchers at the University of Vienna and the Delft University of Technology. Although this approach has been used before...
Colloidal Quantum Dot, IR LEDs Display Highest Efficiency
BARCELONA, Spain, Dec. 5, 2018 — A composite material that is a strong light emitter as well as an efficient charge conductor — colloidal quantum dot (CQD) LEDs — has been developed by a team at the Institute of Photonic Sciences (ICFO). The nanocomposite system comprising IR CQDs...
Photodetector Mimics Directional Hearing in Small Animals
PALO ALTO, Calif., Nov. 2, 2018 — Researchers from Stanford University have drawn from nature — specifically, the ear structure of the gecko — to devise a subwavelength photodetection pixel that can measure both the intensity and incident angle of light. Geckos and many...
Deep Learning Approach Streamlines the Design of Metamaterials
TEL AVIV, Israel, Oct. 24, 2018 — A technique for streamlining the process of designing and characterizing nanophotonic metamaterials, based on deep learning, could make the design, fabrication and characterization of these elements easier. A Tel Aviv University team has shown that...
Ultrastable Glass Layers Improve OLED Performance
BARCELONA, Spain, and DRESDEN, Germany, May 29, 2018 — Researchers demonstrated that it is possible to use ultrastable film formation to improve the performance of OLEDs. Emission layers of OLEDs were grown as ultrastable glasses, a growth condition that allowed for the most thermodynamically stable...
Squeezed Light Confined to Space of One Atom in Nanophotonics Advance
BARCELONA, Spain, April 25, 2018 — Using graphene, researchers have found a way to confine light down to a space that is one atom thick. The ability to confine light to such a small space could pave the way for ultrasmall optoelectronic devices. Previous work has shown that while...
Optically Heated Nanotweezers Manipulate Materials at Nanoscale
AUSTIN, Texas, April 9, 2018 — Opto-thermoelectric nanotweezers (OTENTs) have been developed that use light at the nanoscale to manipulate metal nanoparticles in a wide range of materials, sizes, and shapes, with single-particle resolution. OTENTs could open new possibilities for...
Plasmonic Platform Enhances Photocatalysis
HOUSTON and CAMBRIDGE, England, Oct. 11, 2017 — Researchers have developed a way to build multifunctional nanoscale structures using aluminum nanocrystals. The structures have an aluminum core and are dotted with even smaller metallic islands. The nanocrystals are used as a base for creating...
Optogenetics Used to Control Interorganellar Communication
COLLEGE STATION, Texas, Sept. 6, 2017 — Researchers are using optogenetics to tune communication between organelles within living cells. The optogenetics tools are being used to control the proteins that form the bridge between organelles, and to govern the length of the bridge at the...
Infrared Hologram Device Achieves New Optical Properties
CANBERRA, Australia, Jan. 30, 2017 — Australian National University physicists have invented a tiny device that creates the highest quality holographic images ever achieved, opening the door to imaging technologies often seen in science fiction movies. "As a child, I learned about the...
More Efficient Solar Cells with a One-Step Process
HOUSTON, June 20, 2014 — A new one-step process for producing efficient materials could mean big things for solar cells. Developed by a team at Rice University, the new process produces black silicon. This material reflects almost no light. Its textured surface of nanoscale...
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April 2024
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