spectroscopy

A new method can track changes in live cell gene expression over extended periods of time. Based on Raman spectroscopy, the method doesn’t harm cells and can be performed repeatedly. Credit: MIT News; iStockA new MIT-developed method combines Raman spectroscopy with machine learning to noninvasively track gene expression in cells over time. This technique enables detailed study of cellular differentiation and has potential applications in cancer research, developmental biology, and diagnostics.Sequencing all of the RNA in…

A research team from Kyoto University has significantly advanced infrared spectroscopy technology by integrating a quantum light source, overcoming previous limitations of FTIRs regarding sensitivity and size. This breakthrough enables the creation of compact, efficient scanners that can accurately identify a wide array of materials, setting a new standard for portable, high-performance devices in various fields, including environmental monitoring, medicine, and security. Credit: KyotoU/Shigeki TakeuchiKyoto University…

Meteorites, remnants of asteroids, are crucial for understanding our solar system’s history, acting as time capsules that preserve primordial material. Researchers have made a groundbreaking discovery in the Winchcombe meteorite, identifying key nitrogen compounds, including amino acids and hydrocarbons, without chemical treatments, using a novel detector design. This finding, significant for research into life’s origins on Earth, was facilitated by a high-resolution electron microscope at the SuperSTEM laboratory. This…

Researchers have developed an advanced optical technique to uncover hidden properties of the quantum material Ta2NiSe5 (TNS) using light. By employing terahertz time-domain spectroscopy, the team observed anomalous terahertz light amplification, indicating the presence of an exciton condensate. This discovery opens up new possibilities for using quantum materials in entangled light sources and other applications in quantum physics. Credit: SciTechDaily.comScientists used a laser-based technique to reveal hidden quantum…

By Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) January 24, 2024Metal-Insulator phase transition triggered in strongly correlated system by a few-femtosecond pulse (orange curve) and resulting in a dramatic change of density of states, occurs within less than 1 femtosecond. Credit: MBI: Olga Smirnova / Universität Hamburg: Alexander LichtensteinResearchers have developed a new spectroscopy method to study ultrafast processes in strongly correlated materials, achieving sub-femtosecond…

Terahertz (THz) spectroscopy is an emerging tool in oil shale resource evaluation, offering various applications such as oil identification and THz dating. Scientists are researching its potential, facing challenges but recognizing its significant future role in oil shale exploitation. Credit: SciTechDaily.comResearchers from China University of Petroleum (Beijing) offer a holistic insight into applying terahertz spectroscopy to characterize oil shale.The current understanding of the oil generation potential of oil shale…

By Max Planck Institute for the Structure and Dynamics of Matter November 20, 2023Researchers have successfully demonstrated superconductivity on a chip, revealing non-linear electrical responses in K3C60 thin films and observing critical current behavior. This groundbreaking research, which uses on-chip non-linear THz spectroscopy, opens up new avenues in optoelectronic applications and advances our understanding of superconductivity in quantum materials.Researchers have integrated laser-induced superconductivity on a…

Ultrafast optical field incident on material with broken spatial symmetry (blue), time-reversal symmetry (yellow), or both (green) to generate THz radiation. Insets illustrate various mechanisms that lead to rectified THz currents high-frequency optical fields. Credit: Hou-Tong Chen/Los Alamos National LaboratoryA team of scientists has published an article discussing the utilization of terahertz (THz) emission spectroscopy to reveal the properties of emerging materials, such as quantum materials and low-dimensional ones…

The Apple Watch Series 8 was a bit of a boring release for Apple’s wearable, as it wasn’t a huge upgrade over the Apple Watch Series 7; Apple seemed to spend more energy focusing on the Apple Watch Ultra instead. The only real upgrades for the Series 8 were the newer-generation S8 chip and a new body temperature sensor, though the use cases for that are pretty limited. But if you didn’t have a Series 7, then the Apple Watch Series 8 was still a great upgrade for those coming from older models. We’re still a few…

A practical example on spectra pre-processing and modelingData Science for Raman Spectra. From spectral pre-processing to modeling: Spike detection and removal, baseline subtraction, smoothing and application of classical least squares for components quantification. .Raman spectroscopy provides information about the vibrational modes of molecules in the form of Raman spectra. These spectra can work like a structural fingerprint by which molecules and materials can be identified and characterized. From them we can learn…