Articles tagged with Plasmons
Researchers at Chalmers University of Technology have developed a compact, humidity-tolerant sensor that detects hydrogen gas in humid environments. The sensor uses platinum nanoparticles to measure the concentration of hydrogen by analyzing the thickness of a water film on its surface.
Using a new terahertz spectroscopic technique, researchers have revealed that tiny stacks of 2D materials can naturally form cavities, confining light and electrons in even tinier spaces. This discovery could help control quantum phases and ultimately harness them for future quantum technologies.
Researchers propose a new method for manipulating light using the geometry of matter, generating second-harmonic signals at much lower intensities than traditional methods. The team's design guidelines offer practical solutions for building nanoscale terahertz devices without applied voltage.
Scientists at Linköping University have made a significant breakthrough in creating controllable flat optics using nanostructures on a flat surface. By precisely controlling the distance between antennas, they achieved up to tenfold improvement in performance, opening up new avenues for applications such as video holograms and biomedic...
Researchers observed electrons dancing in unison around a particle less than a nanometer in diameter, achieving unprecedented precision. This breakthrough enables the study of plasmonic resonance at sub-nanometer scales, potentially leading to novel applications and enhanced efficiency in existing technologies.
Rice researchers have created a catalyst that leverages plasmonic photocatalysis to break down methane and water vapor into hydrogen and carbon monoxide without external heating. The new catalyst system enables on-demand, emissions-free hydrogen production, which could transform the energy industry.
Scientists at European XFEL have developed a new method to study warm dense matter, allowing for unprecedented insights into its structure and properties. This breakthrough enables the investigation of plasmons in ambient aluminum with ultra-high-resolution X-ray Thomson scattering.
Scientists at Tohoku University successfully developed a room-temperature terahertz-wave detector using 2D plasmons, overcoming key bottlenecks in conventional detectors. The breakthrough enhances detection sensitivity by over an order of magnitude, enabling faster and more sensitive THz wave detection.
Researchers develop molecular jackhammers that use aminocyanine molecules to create plasmons, which rupture melanoma cell membranes with high efficiency. The method showed a 99% success rate against lab cultures of human melanoma cells and cured half of the mice with melanoma tumors.
Researchers have finally found Pines' demon, a massless and neutral composite particle predicted to exist in certain metals. They used a nonstandard experimental technique that directly excites a material's electronic modes, allowing them to see the demon's signature in strontium ruthenate.
The NEHO project aims to create ultrafast and energy-efficient information processing systems using photonics and semiconductor technology. By leveraging nonlinear photon-plasmon interactions, researchers hope to revolutionize information processing with faster, more efficient, and flexible technologies.
Researchers have enabled remote tuning of coupled Dirac plasmon excitations in graphene by designing an additional damping pathway through adjusting the Fermi energy level. The results provide fresh concepts for active control of other quasiparticle lifetimes and applications in nanophotonics.
Scientists at the University of Tsukuba have created a nanocavity in a waveguide that selectively modifies short light pulses, enabling the development of ultrafast optical pulse shaping. This breakthrough may lead to the creation of new all-optical computers that operate based on light.
An international research team developed nanometric light modulators to study neuronal tissue in deep brain regions. The new approach enables the creation of minimally invasive neural probes that can be used to study specific brain diseases, including brain tumors and epilepsy.
Researchers have discovered that twisted bilayer graphene can guide and control light at the nanometer scale due to its unique interaction with collective electron movements. This property enables the material to be used as a platform for optical sensing of gases and bio-molecules.
Researchers develop VICE biosensor to assess toxicity of substances on human cells, providing a non-invasive method for early detection. The technology aims to address limitations of current toxicological assessments, which often fail to detect long-term side effects.
Physicists have established a fundamental limitation of light confinement in nano-scale systems, with a critical dimension threshold of around 250nm. This discovery has implications for various fields such as material science and quantum technologies.
The PROTEIN-ID project aims to create a device that can read the fingerprint of proteins and identify their sequence, enabling rapid detection of diseases. The innovative device will use spectroscopic techniques, machine learning, and nanoscale sensors to analyze protein structures.
The study creates a new metal-like semiconductor material with excellent plasmonic resonance performance using an electron-proton co-doping strategy. The material achieves a metal-like ultrahigh free-carrier concentration, leading to strong and tunable plasmonic fields.
Researchers at USTC achieved sub-molecular resolution in single-molecule Raman spectroscopy imaging and photoluminescence imaging. They demonstrated the effects of local plasmon-exciton interaction on fluorescence intensity, peak position and peak width on the sub-nanometer scale.
Researchers have developed a new technique using V-shaped graphene-metal film structures to study the properties of individual organic molecules and nanolayers. The approach relies on plasmon localization, which enables the team to focus on the sample and register a response from several molecules or even a single large molecule like DNA.
Researchers at ICFO have successfully built a new type of cavity for graphene plasmons, enabling the confinement of light in the smallest volume ever achieved. This breakthrough has promising implications for molecular and biological sensing technologies.
Researchers found that molecule-plasmon coupling strength affects SEIRA spectral lineshapes, which are crucial for molecular detection. The study revealed how coupling distance, molecular density, and plasmon loss impact spectral profiles.
Scientists have observed long-lived plasmons in a new class of conducting transition metal dichalcogenide (TMD) called quasi 2D crystals. The study reveals that these plasmons could enhance light intensity by more than 10 million times, opening the door for renewable chemistry and electronic materials controlled by light.
Scientists at Linköping University develop optical nanoantennas made from a conducting polymer, allowing for controllable nano-optical components. The antennas react to light and can be switched on and off, making them suitable for applications such as smart windows.
Researchers from NTU Singapore and Niels Bohr Institute devise method to create magnetism in non-magnetic metallic disks using linearly polarised light. They found that intense plasmonic oscillating electric fields can modify the dynamics of electrons in the metal, leading to spontaneous magnetisation.
Researchers created a graphene-based terahertz detector that detects waves, enabling faster Wi-Fi and new medical diagnostic methods. The detector uses plasmons to detect terahertz radiation, overcoming the issue of wave resonance.
Scientists at Rice University and Tokyo Metropolitan University developed a novel way to manipulate light at the quantum scale by using single-walled carbon nanotubes as plasmonic quantum confinement fields. The discovery could lead to the development of unique lasers and other optoelectronic devices.
Researchers from Siberian Federal University and L. V. Kirensky Institute of Physics predicted the structure to control Tamm plasmon wavelength using external fields or heating. They achieved a hybrid Tamm plasmon by incorporating a liquid crystal layer in a multilayer mirror, enabling color change through heating or electrification.
Researchers at ICFO have developed a phase modulator using graphene plasmons, enabling ultra-compact light modulation with a device footprint of only 350 nm. The discovery has potential applications for on-chip biosensing and two-dimensional transformation optics.
Scientists have discovered that three-dimensional graphene can be tuned to exhibit precise control over its plasmon frequencies through doping, pore size, or molecule attachment. This property may enable the creation of specific chemical sensors and solar cells.
Researchers from the National University of Singapore have discovered novel properties of strontium niobate, a material that displays both metallic type conduction and photocatalytic activity. The material exhibits an intrinsic plasmonic absorption, allowing it to absorb visible photons, which is exceptional among metals.
Scientists at NIST have developed a new device that measures atomic-scale motion with unprecedented precision. The handheld tool can also be mass-produced to aid in sensing trace amounts of hazardous agents, perfecting robot movement, and detecting weak sound waves.
Researchers at Technical University of Denmark have demonstrated efficient absorption enhancement at a wavelength of 2 micrometers by graphene plasmons. This breakthrough brings graphene into the regime of telecommunication applications.
Scientists developed a technique to image THz photocurrents with nanoscale resolution, visualizing strongly compressed THz waves in a graphene photodetector. The imaging technique, called THz photocurrent nanoscopy, provides unprecedented possibilities for characterizing optoelectronic properties at THz frequencies.
Researchers create compact sources of coherent plasmons using van der Waals heterostructures, enabling compact optoelectronic circuits. The discovery has potential applications in signal transmission and tunable sources of terahertz radiation.
Graphene-based technologies enable ultra-small optical nanodevices by capturing light in record-small volumes. The researchers identified two types of plasmons - edge and sheet modes - with unique properties that can channel electromagnetic energy in one dimension.
Researchers at Northwestern University developed a new scheme using plasmonics to control infrared plasmons, enabling fast transmission of massive data. By modulating light signals in the near-infrared wavelength region, they can potentially switch signals in optical fibers with high speeds.
Berkeley Lab researchers model hot carrier movement in real-time, distinguishing between plasmon and single particle excitation behaviors. The study shows that 90% of plasmon energy can be converted to single particle energy when excitations are in tune.
Researchers at the University of Rochester developed a nanoscale photodetector that can detect optical plasmons, generating current with light. The device expands on previous work demonstrating light transmission through silver nanowires, paving the way for miniaturized photonic circuits.
Researchers at Lomonosov Moscow State University develop a sphere that manipulates electromagnetic radiation on scales shorter than its wavelength, enabling faster photonic devices. The sphere's interaction with light produces a resonance similar to plasmonics, but with weaker damping, making it suitable for various applications.
Researchers developed a nanoscale speed bump called a plasmonic phase modulator to regulate plasmon waves, enabling faster data processing. The device uses a tiny gap in metal wires to slow down plasmons, allowing for selective cancellation and optical switching.
Scientists have demonstrated electrical control of energy flow from erbium ions into photons and plasmons using graphene. The research opens up novel types of nano-photonics devices based on active plasmonics, with potential for efficient data storage and manipulation.
Researchers at ICFO have discovered a material system that enables highly confined low-loss plasmons in graphene-boron nitride heterostructures, allowing for efficient optical sensing and computing. This breakthrough paves the way for extremely miniaturized optical circuits and devices.
Researchers bridge the size gap to study kinetic behavior of Ag nanocatalysts using SERS, providing real-time reaction information. The stepped surface of etched nanoparticles mimics sub-5-nm environment, increasing active surface atoms' participation in catalysis.
Researchers successfully trapped and controlled light using graphene-based optical antennas, demonstrating the fundamental principles of conventional optics. The discovery paves the way for the development of compact and faster photonic devices and circuits, which could revolutionize signal processing and computing.
A researcher has studied the coupling of plasmon and dipolar collective modes in a monolayer of molybdenum disulfide (MoS2), a promising two-dimensional material. The investigation reveals that these collective excitations play a key role in describing many-body quantum systems, with potential applications.
Researchers at National University of Singapore create molecular electronic devices that can operate at hundreds of terahertz frequencies, ten times faster than current microprocessors. The breakthrough uses quantum plasmonic tunnelling and has potential applications in ultra-fast computers and single molecule detectors.
Researchers at the University of Pennsylvania have created a new mechanism for extracting energy from light, increasing efficiency by 3-10 times compared to conventional methods. This breakthrough could lead to more efficient solar cells and optoelectronic devices.
Scientists visualize the trapping and confinement of light on graphene, making it a promising candidate for optical information processing. Graphene plasmons can be used to electrically control light, enabling new optical switches and applications in medicine, bio-detection, solar cells, and quantum information processing.
Scientists at Berkeley Lab have demonstrated a microscale device made of graphene that can tune its response to light at terahertz frequencies with exquisite precision. The device uses an array of graphene ribbons to control collective oscillations of electrons, or plasmons, which absorb different frequencies of light.
Researchers at Rice University have developed a new technology that could dramatically improve solar energy panels by merging nanoscale antennas with semiconductors. This technique allows the capture of infrared light's energy, which is currently unable to be converted into electricity in silicon-based solar cells.
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.