Articles tagged with Plasmonics
The researchers developed a promising hybrid nanoobject for efficient two-photon fluorescence probes using gold nanoshells. The nanoshell acts as an optical antenna, enhancing the fluorescence intensity and stability of fluorescent emitters.
Researchers at ETH Zurich have developed hot nanoparticles that can kill tumour tissue with heat by absorbing near-infrared light. The particles are coated with a silicon dioxide layer and aggregate in a way that allows them to absorb light and generate heat.
University of Utah engineers create microscopic structures that use light in metals to carry information, controlling electrical conductivity with an inexpensive inkjet printer. The technique could lead to rapid fabrication of superfast components and faster wireless technology.
The researchers developed a theoretical model that explains macroscale fluid convection induced by plasmonic nanostructures. They found that the ITO layer is critical for distributing thermal energy and creating fluid convection, enabling new applications in lab-on-a-chip environments.
Transformation optics tackles challenges in plasmonic devices by transforming complex structures into canonical ones, facilitating accurate modeling and design. This enables the development of efficient light-harvesting nanostructures with strong near-field enhancements.
A Sandia-led team has created a tunable plasmonic crystal that can transmit terahertz light at varying frequencies, increasing bandwidth in high-speed communication networks. The crystal's ability to direct light like a photonic crystal, combined with its sub-wavelength size, hybridizes the two concepts.
Arizona State University researchers have received a $1.6 million grant to develop advanced microscopy methods that can capture molecular-scale phenomena in living systems. The technique, called plasmonic resonance, allows for the imaging of proteins and other molecules within cells with enhanced contrast and temporal resolution.
Researchers at Lawrence Livermore National Laboratory have made a significant breakthrough in solar energy research by experimenting with plasmonic black metals. These nanostructured metals can trap light and increase solar absorption, paving the way for more efficient photovoltaic cells.
The new technique, PTIR, allows precise measurement of plasmonic nanomaterials at the nanoscale without affecting their function. Researchers can image hot spots and dark modes in plasmonic resonators with high spatial resolution.
Scientists have developed a new method to discern molecular handedness using tiny nanocubes, which could improve drug development and optical sensors. The approach amplifies the difference in response to light between left- and right-handed molecules.
Srikanth Singamaneni aims to create novel biosensors using self-assembled metal nanoparticles with artificial antibodies, improving specificity and sensitivity. He also plans to educate high-school science teachers and develop a nanotechnology kit for students.
Researchers at the University of Illinois have developed a new technique to measure nanometer-scale infrared absorption in semiconductor plasmonic microparticles. This allows for direct observation of plasmonic behavior within microparticle infrared antennas, enabling confirmation of theoretical models and design parameters.
Researchers at the University of Illinois have created a novel, ultra-sensitive tool for chemical, DNA, and protein analysis using nanoscale Lycurgus cup arrays. The sensor boasts 100 times better sensitivity than existing devices, enabling low-cost, simple, and sensitive detection methods.
Researchers have created a nanostructure that manipulates electron waves to form plasmonic halos, offering control in light filtering and potential applications in biomedical plasmonics and discrete optical filtering. The unique structure allows for selective light transmission, creating an array of colored 'halos',
Researchers at Rice University have developed a way to selectively kill some diseased cells while treating others in the same sample using tunable plasmonic nanobubbles. The process activates with a pulse of laser light and leaves neighboring healthy cells untouched.
Researchers at Rice University have made a breakthrough in doping graphene with light, allowing for the creation of simple, graphene-based diodes and transistors on demand. The discovery uses plasmonics to manipulate light and inject electrons into the material, enabling novel security and cryptography devices.
Scientists at the University of Illinois have developed a new technique for manipulating nanoparticles using low-power optical nanotweezers. The method, which operates at average power levels 100x lower than standard laser pointers, enables precise trapping and probing of fragile biological samples.
Duke University researchers have characterized metal's ability in devices that enhance light by measuring unique properties of light on a single atom scale. The findings provide a roadmap for precisely controlling light scattering, enabling the development of medical sensors and integrated photonic communications components.
Researchers at Rice University have discovered that plasmonic chains exhibit properties similar to polymers, with the arrangement of nanoparticles influencing their optical behavior. The study found that the addition of nanoparticles along the chain can alter the energy of super-radiant modes and affect the interaction between particles.
Researchers at Berkeley Lab directed the self-assembly of gold nanoparticles into device-ready materials using a simple and inexpensive technique. The method has potential applications in computer memory storage, energy harvesting, remote-sensing, catalysis, light management, and plasmonics.
Researchers have found a promising candidate for plasmonic materials in titanium nitride, enabling the transportation of plasmons and directing optical signals on the nanoscale. This discovery could lead to faster and more efficient optoelectronic devices with unprecedented speed and efficiency.
Researchers embed artificial membranes with billions of nanoantennas to study cell signaling patterns and molecular interactions. The technique boosts fluorescent signals, enabling tracing of individual proteins and enhancing biomolecule imaging.
Researchers in the US have successfully cloaked a three-dimensional object standing in free space using a method known as plasmonic cloaking. The technique uses ordinary materials to bend light around objects, cancelling out scattering and rendering them invisible at all angles of observation.
Researchers have discovered a way to self-assemble uniform polyhedral silver nanocrystals into densest packings and exotic superlattices, opening the door to simpler fabrication of plasmonic materials. The technique uses gravity-driven sedimentation and allows for precise control over superlattice dimensions.
Collective phenomena in nanoscale structures have applications in light generation, optical sensing and information processing. Researchers explore these effects to engineer novel devices with custom-designed optical, electronic and mechanical characteristics.
The journal Optical Materials Express has published a special Focus Issue on Nanoplasmonics and Metamaterials, highlighting recent advances in nano-optics. Researchers have successfully developed new optical materials and nanofabrication techniques to control light fields beyond the diffraction limit.
The University of Utah is launching a six-year effort to develop new materials for faster computers, better microscopes and solar cells. Researchers will focus on plasmonics and spintronics to create organic semiconductors and metamaterials.
Researchers at the University of Manchester and Cambridge have discovered a way to enhance graphene devices for photodetectors in high-speed optical communications by 20 times. This is due to the addition of metallic nanostructures that concentrate light within the graphene layer, increasing its efficiency.
UCLA researchers have developed a plasmonic-enhanced polymer tandem solar cell that improves power conversion efficiency from 5.22% to 6.24%, thanks to the incorporation of gold nanoparticles. The enhancement effect is attained through local near-field enhancement, showing great potential for future development.
Researchers at Berkeley Lab have demonstrated a technique to control the curved trajectories of Airy beams in real-time, enabling fast-as-light communication systems and optoelectronic devices. This breakthrough uses plasmonic Airy beams to manipulate surface plasmon polaritons, opening doors to new technologies in nano-photonics, biol...
Researchers at Berkeley Lab demonstrated antenna-enhanced gas sensing at the single particle level using a palladium nanoparticle on a gold nanoantenna. The technique amplifies plasmonic sensing signals, eliminating statistical characteristics and offering noninvasive, biocompatible applications.
A team of Lehigh researchers successfully trapped a rainbow of broadband light using plasmonic structures, slowing down light waves over a broad range of wavelengths. The experiment demonstrated the feasibility of this technology for improving data storage and optical data processing.
Researchers developed a technique to visualize plasmonic fields at the nanoscale, focusing on the position of plasmonic modes just a few nanometers apart. This advance enables the study of high-speed data transmission and ultrafast detector arrays.
New materials could enable ultrapowerful microscopes, improved solar cells, and a possible cloak of invisibility. The breakthrough is made possible by overcoming two major limitations in metamaterials development: light absorption and precision tuning.
GRIN plasmonics combines transformation optics and plasmonics to control strongly confined light waves. The technique uses an isotropic dielectric material on a metal substrate to create efficient plasmonic devices, including Luneburg and Eaton lenses.
University of Michigan scientists have developed a new nanostructuring technology that enables the creation of ultra-small pixels for energy-efficient displays. The technology uses plasmonic structures to trap and transmit light, reducing absorption loss and increasing the efficiency of LED displays.
Researchers at Rice University used gold nanoparticles with laser pulses to create tiny vapor bubbles that selectively destroyed cancer cells in zebra fish implanted with live human prostate cancer cells. This technique avoids damaging healthy tissue and demonstrates a new approach to cancer treatment.
A Northwestern University team has developed a low-cost, high-throughput method for creating and mass-producing large-area nanoscale patterns using Shrinky Dinks. This solvent-assisted nanoscale embossing (SANE) method offers unprecedented opportunities to manipulate electronic, photonic, and magnetic properties of nanomaterials.
Researchers have made significant progress in plasmonics, a field that overcomes diffraction limitations to fabricate nano-scale optical components. These advancements enable the development of integrated nanophotonic circuits with substantial improvements in bandwidth and speed for next-generation information technologies.
Researchers have created a nano-sized light mill motor that can control rotational speed and direction by tuning incident light waves. The motor's power density is high, and it can be used to drive micro-scale objects, enabling new applications in nanotechnology and biology.
Researchers from Berkeley Lab and UC Berkeley have developed a novel approach to transformation optics, allowing for the manipulation of near-field optical waves on uneven surfaces. This breakthrough enables the design of plasmonic devices such as beam splitters, shifters, and directional light emitters.
Researchers are exploring new applications for terahertz sensors using plasmonics and photonics technology. This technology has the potential to improve optical sources, detectors, and modulators, as well as create biomolecules such as plastic explosives.
Rice University researchers have developed a new way to track nanoparticles using gold nanorods and polarization imaging techniques. The technique could provide valuable information about materials, including living systems, that incorporate nanoparticles.
Researchers have successfully demonstrated the world's smallest semiconductor laser, paving the way for ultra-sensitive bio-detection, nanoscale optics, and enhanced communication systems. The breakthrough technology has potential applications in various fields, including healthcare, optics-based telecommunications, and optical computing.
Researchers have engineered bowtie-shaped devices that focus and sort light in tiny spaces, enabling the creation of ultrafast detector arrays. By introducing asymmetry, scientists can control the plasmonic properties of these devices to produce filters with specific colors or energies.
Researchers have developed a plasmonic switch using molecular machines, which can transmit electrons and light simultaneously. This technology has the potential to enable ultra-small computers with high storage capacity and processing speed.
Researchers at Berkeley Lab and Cal Tech have created a high-Q surface-plasmon-polariton whispering-gallery microcavity, enabling ultra-small device fabrication and strong light enhancement. This innovation paves the way for future nanolasers with applications in photonics and optical microchips.
Engineers at UC Berkeley develop a new way to create computer chips by combining metal lenses with excitable electrons to achieve higher resolution detail. The technique could lead to ultra-high density disks holding 10-100 times more data than today.
Scientists at UC Berkeley have developed a way to confine light in incredibly small spaces, potentially leading to breakthroughs in optical communications, miniature lasers and optical computing. The technique could give remarkable control over light, allowing for the creation of compact optical transistors.
The University of Maryland researchers have developed a 2D invisibility cloak that refracts visible light around an object, making it invisible. The cloak is created using a thin, transparent acrylic plastic layer with a gold film and can be integrated into a conventional optical microscope to view nanoscale details.
Researchers at Rice University have made an unexpected plasmonic discovery, finding that terahertz waves slow down as they pass through smaller metal wires. This phenomenon has significant implications for the development of new chemical sensors and endoscopes.
Researchers at Rice University have developed a quantum model to predict nanophotonic behavior, making it easier to design new optical materials and devices. The study shows that plasmons in nanoparticles hybridize with each other, allowing for the prediction of properties in complex metallic nanostructures.