Scientists develop a technology to detect and analyze nanoplastics in tap water using an electro-photonic tweezer and Raman spectroscopy. The new approach enables real-time detection of microplastics with high sensitivity, reducing analysis time from days to seconds.
Scientists at Stockholm University propose a nonlinear spectroscopic technique to investigate coupled nuclear electronic dynamics in photo-excited molecules. This approach allows for the observation of conical intersections, which are 'funnels' connecting different electronic states, and provides insight into non-adiabatic dynamics.
A new NO2 sensor has been proposed using static magnetic field faraday rotation spectroscopy, featuring high species specificity and detection sensitivity. The sensor detects paramagnetic molecules by analyzing changes in light polarization caused by a gaseous medium immersed in an external magnetic field.
Researchers at Texas A&M University are testing Raman spectroscopy as a diagnostic tool for Lyme disease, which shows promise in accurately identifying infected individuals. The new test could improve Lyme disease diagnosis and treatment outcomes for both humans and animals.
Researchers have developed a new spectroscopy technique called filament- and plasma-grating-induced breakdown spectroscopy (F-GIBS), which improves the sensitivity of trace metal detection in liquid samples. The technique uses fluid jets to analyze aqueous solutions and achieves high precision by avoiding detrimental influences of liqu...
Scientists have successfully filmed the impulsive response of bound electrons to intense XUV pulses using a new photoelectron spectroscopy. The technique provides a novel method for time-resolved imaging of ultrafast bound-state electron processes in intense laser fields.
Researchers apply two techniques to device, finding states suggestive of Majoranas but absent with alternative strategy. This paradox reveals imposter quasi-particles deceiving measurement strategies individually.
A new tabletop coherent source has been developed that spans seven optical octaves and features a spectral brightness up to five orders of magnitude higher than the brightest synchrotrons. This breakthrough enables various strong field, ultrafast, and molecular spectroscopy applications.
Researchers developed a noncontact method to characterize Si surface properties, including surface potential and charge density. The technique uses terahertz emission spectroscopy and offers rapid, sensitive, and semiquantitative characterization of Si surfaces.
Scientists discovered an effective way to passivate deep-level traps in perovskite solar cells, significantly improving power conversion efficiency. The breakthrough involves a new in-situ protonation process that reduces minority carrier traps.
Researchers from the Max Born Institute report on a new light source generating ultrashort infrared pulses beyond 10 µm wavelength, exhibiting high potential for vibrational spectroscopy and optical materials processing. The system demonstrates excellent beam quality and stability, with output power and repetition rate scalable.
Researchers at UTA developed a novel spectroscopic tool using auger-mediated positron sticking to measure electronic structure of surface materials selectively. This technique allows for selective measurement of top-layer properties, enabling researchers to understand material's conductivity and behavior.
The researchers developed a novel approach to infrared spectroscopy called Infrared Diffusion-Ordered Spectroscopy (IR-DOSY), which separates molecules with different sizes into distinct sets of IR peaks. This method has potential applications in fields such as proteins, polymers, pharmaceuticals, and biomedicine.
A novel algorithm uses near-infrared spectroscopy to estimate intracranial pressure (ICP) based on hemoglobin levels. The research validates the accuracy of this method using invasive ICP data.
Researchers at Osaka Metropolitan University used Mössbauer spectroscopy to study monoclinic pyroxenes, a type of calcium-rich mineral. They found that the tensor determining iron ion intensity ratios is independent of iron content but dependent on calcium content.
Researchers studied ketene conversion over H-SAPO-11 using kinetic analysis and spectroscopy. They found two pathways: acetyl species following acetic acid ketonization or acetoacetyl species via keto-enol tautomerism with water.
Researchers developed a high-sensitivity differential Helmholtz photoacoustic cell, achieving a minimum detection limit of 177 ppb in methane gas detection. The optimized cell structure and signal processing techniques improved performance by suppressing noise and enhancing photoacoustic signals.
Researchers at Helmholtz-Zentrum Berlin for Materials and Energy are utilizing X-ray absorption spectroscopy to investigate oxygen evolution in electrocatalysis. This study aims to improve the efficiency of green hydrogen production by developing more stable and cost-effective catalysts.
Researchers at the Max Born Institute have used novel ultrashort soft X-ray spectroscopy to study the fate of molecular nitrogen when an electron is kicked out. They found that the B state has a similar degree of excitation as the X state, contradicting previous models. Instead, a coherent interplay between light fields enables lasing ...
Researchers used Raman spectroscopy to identify and analyze Escherichia coli persister cells, finding they have enhanced metabolic activities despite being in a dormant state. This new understanding could lead to the development of novel therapeutic strategies.
Researchers have developed a new method for detecting ultrafast electronic processes using entangled photons, enabling high-resolution Raman spectroscopy. The technique overcomes the diffraction limit and allows for sensitive detection of molecular excitations on the femtosecond scale.
The report explores diffuse optical imaging methods applicable to noninvasive human studies, including near-infrared spectroscopy (NIRS) and diffuse correlation spectroscopy (DCS). It introduces state-of-the-art technologies and software, exploring their impact on neuroscience and clinical applications.
Researchers characterize material properties of IP-Q using Raman spectroscopy and nanoindentation, revealing elastic parameters and their effects on acoustic behavior. The study optimizes elastic parameters for TPP-fabricated structures, benefiting applications in life science, mobility, and industry.
Researchers develop NMR spectroscopy method with amplifier for accurate protein detection at physiological concentrations. This allows study of protein dynamics and behavior at native levels, shedding light on cell proliferation to tumor growth.
Scientists at University Hospital Bonn compared PELDOR and FRET spectroscopy methods to measure distances in protein molecules. While most results were comparable, inconsistencies were found in two cases, highlighting the importance of re-measurement with another nano ruler.
A team of scientists developed a new Surface-Enhanced Raman Spectroscopy (SERS) method that captures target molecules in small gaps, increasing sensitivity by 2-3 orders of magnitude. The method uses a multilayer nanoparticle film with natural gaps less than 3 nm, allowing for trace dynamic detection and monitoring of biological systems.
A research team from Japan has developed a stable TERS system that enables characterization of defect analysis in large-sized WS2 layers at high pixel resolution. The team successfully imaged nanoscale defects over a period of 6 hours in a micrometer-sized WS2 film without significant signal loss.
Researchers used infrared and Raman spectroscopy to identify lysine acetylation features, providing a theoretical basis for protein acetylation structure analysis. The study found distinct vibrational spectral characteristics for each acetylation type, enabling accurate identification of acetylated lysine.
Researchers have proposed a novel algorithm, InResSpectra, to accurately identify crop varieties using near-infrared spectroscopy. The model achieved high accuracy in identifying wheat and rice varieties, providing an effective method for authentic identification.
The researchers successfully demonstrated attosecond-pump attosecond-probe spectroscopy to study non-linear multi-photon ionization of atoms. The experiment showed that the absorption of four photons from two attosecond pulse trains led to three electrons being removed from an argon atom.
The study investigates the nonequilibrium relaxations of hot electrons and coherent acoustic phonons in Sb2Te3 under hydrostatic pressure up to 30 GPa. It reveals a hot phonon bottleneck effect that is effectively suppressed along with the onset of electronic topological transitions.
Researchers developed a real-time polarized infrared spectroscopy technique to study metal-organic frameworks and guest molecule interactions. This method provides insights into host-guest and guest-host interactions, enabling the development of high-performance porous materials.
Researchers from Hefei Institutes of Physical Science successfully detected OH radicals at 2.8 μm wavelength using optical-feedback cavity-enhanced absorption spectroscopy (OF-CEAS). This breakthrough provides a new direct detection method for OH radicals, crucial for understanding atmospheric chemistry.
Researchers successfully measured the wettability of graphene and other 2D materials using VSFG, a surface-selective tool that connects macroscopic and molecular-level properties. The study found that graphene's 'wetting transparency' diminishes with increasing layers, becoming hydrophobic at a certain point.
A new technique uses air lasing and coherent Raman spectroscopy to detect greenhouse gases with high sensitivity and multi-component measurement capabilities. The detection reaches a level of 0.03% and can distinguish between CO2 isotopes.
A new Raman spectroscopy system allows for real-time molecular imaging of near-surface tissue, providing detailed biochemical distributions for disease tissue differentiation. The technique offers high spatial resolution and can be used for clinical diagnostics and molecular boundary demarcation.
Researchers used terahertz time-domain spectroscopy to compare fossil and synthetic ambers. The technique detected differences in the materials' compositions, indicating potential detection methods for synthetic forgeries.
A new multimodal eye scanner combining optical coherence tomography (OCT) and Raman spectroscopy enables the detection of molecular information in the internal structure of the eye. This technology aims to detect neurodegenerative diseases, such as Alzheimer's and Parkinson's, at an early stage, improving treatment options.
Researchers have provided direct insight into the electronic structure of a proton donating group in an amine aromatic photoacid using ultrafast X-ray spectroscopy. The study reveals major electronic structure changes occur on the base side of the Förster cycle, resolving the long-standing open question.
Scientists developed a new technique for single nanostructure circular dichroism spectroscopy using a nano-patterned liquid-crystal polarization grating, allowing for real-time tracking and analysis of individual functional units. The new method is equivalent to conventional CD spectroscopy and has high efficiency and accuracy.
Researchers have developed miniaturized reflectors that enlarge the uses of remote infrared spectroscopy, allowing for field-ready devices with minimal size, weight, and power requirements. The devices utilize Ge-BaF2 thin films for surface micromachined mid-wave and long-wave infrared reflectors.
Roman will explore cosmic acceleration using multiple methods, including spectroscopy and imaging surveys. The mission aims to create a 3D map of the universe by measuring accurate distances and positions of millions of galaxies.
A new SERS method using a liquid 3D hotspot matrix enables online quantitative detection of anticancer drugs in serum. The method exhibits 50ppb sensitivity and a range of 50-1000ppb for the drug 5-fluorouracil.
Physicist Stefan Kaiser's ERC Consolidator Grant project uses terahertz lasers to measure superconductor properties, shedding light on Cooper pairs and Higgs oscillations. The new spectroscopy method aims to characterize superconductors and discover new ones.
Researchers from Italy, USA and Australia demonstrate a new approach to ultrafast spectroscopy using noisy pulses to retrieve phononic states in materials. The technique uses correlations induced through nonlinear interaction of light with the material.
Researchers improve solar cell performance predictions by analyzing terahertz and microwave spectroscopy data, enabling more accurate assessments of material quality. This advancement can quickly test new semiconducting materials for their potential suitability.
Researchers developed a machine learning technique that can identify different bacteria in arbitrary media with accuracies of up to 98% using surface-enhanced Raman spectroscopy and deep learning. The technique, called DualWKNet, enables rapid detection without the need for bacterial separation steps.
Scientists have developed a new spectroscopy technique to directly measure the binding energy of biexcitons in WS2, providing insights into their dynamics and characteristic energy scales. The findings inform the development of novel devices such as compact lasers and chemical sensors.
A team led by Osamu Takahashi developed a procedure to reproduce the double peak feature of x-ray emission spectroscopy spectra in liquid water. They used molecular dynamics calculations and first principles quantum mechanical calculations to estimate XES spectra, reproducing features such as the double peaks.
Researchers developed a new technique called dual-detection impulsive vibrational spectroscopy (DIVS) to measure two distinct types of vibrational signals. DIVS enables synchronous measurement of THz- and fingerprint region vibrations, offering high temporal resolution for real-time chemical analysis.
The study reveals a novel technique using ammonium ions to observe ions in the selectivity filter of ion channels for the first time. This breakthrough enables researchers to investigate pharmacological effects and gain new perspectives on ion channel research.
A novel detector technology has been developed for sensitive nitrogen dioxide detection, enabling fast and accurate measurements. The new instrument achieves precisions of 35 pptv in 1 s and 8 pptv in 30 s data acquisition time, surpassing previous methods.
Researchers at Lund University have developed a way to convert carbon dioxide into fuel using solar energy, creating a potential solution for reducing greenhouse gas emissions. The process uses advanced materials and ultra-fast laser spectroscopy, allowing for the conversion of CO2 to carbon monoxide.
Researchers from the University of Warsaw have developed a quantum processor that can efficiently provide information on matter hidden in light, improving spectroscopy measurements. The device achieves high resolution (15 kHz) using a small amount of light, surpassing classical limits.
Physicists at Nicolaus Copernicus University developed new methods of molecular spectroscopy in optical cavity structures, offering higher precision and sensitivity. The methods were tested using dual-comb cavity ring-down spectroscopy, enabling parallel broadband spectroscopy with limited spectral definition.
Researchers developed a new reagent-free detection technique for SARS-CoV-2 using Raman spectroscopy and machine learning. The method shows an accuracy of 80% in detecting COVID-19 infections from saliva samples, overcoming limitations of RT-PCR testing.
A new MRI technique has been developed to detect changes in multiple sclerosis (MS) at an earlier stage. This technique, proton MR spectroscopy with a 7-tesla magnet, can visualize brain changes that appear normal on conventional MRI scans.
The integration of optical sensing into orthopedic surgical devices has the potential to increase accuracy and improve outcomes in musculoskeletal repair. Researchers explore various types of optical sensing, including spectroscopy and imaging, to address unmet clinical needs in orthopedic surgery.
A new neuroimaging technique uses proton MR spectroscopy to detect biochemical changes in the brains of people with multiple sclerosis (MS) early in the course of the disease. The technique shows promise as a valuable tool in the care of MS patients, potentially leading to faster treatment evaluation and improved patient outcomes.
University of Adelaide scientists developed a new simple and inexpensive method to detect low concentrations of agricultural lime in soils. The Mid Infrared spectroscopy technique allows for accurate detection of very small amounts of lime, enabling farmers to manage their soils more effectively.