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Raman scattering News
Microscopy Method Detects Treatment-Resistant Cancer
BALTIMORE, Oct. 9, 2023 — Therapy-induced senescent (TIS) cells are cancer cells that become resistant to therapies and enter a dormant stage. These cells can emerge from dormancy and induce tumor resistance and relapse. To provide insight into how TIS cells evolve, it is crucial to develop simple, reproducible methods to study the onset and progression of these cells in human cancer cell cultures. An international team from Johns Hopkins University and Italy’s Politecnico di Milano, Fondazione Istituto
Nanofilms Optimize Raman Thermometry for Extreme Manufacturing
AMES, Iowa, Sept. 29, 2022 — Researchers at Iowa State University, Shenzhen University, and Shanghai University of Engineering Science demonstrated an approach to the thermal probing of nanomaterials in which the ratio of two resonance Raman peak intensities of a 2D material,...
High-Throughput Imaging Links Microbial Metabolism With Cell Identity
BOSTON, July 5, 2022 — An imaging platform for investigating microbiomes in medical and environmental samples can perform high-throughput metabolism and identity analyses with single-cell resolution. Called SRS-FISH, or stimulated Raman scattering two-photon fluorescence...
Spectroscopy Technique Widens Spectra for Measuring Molecular Structure
TOKYO, Sept. 27, 2019 — Researchers at the University of Tokyo have combined two current spectroscopy techniques — infrared (IR) absorption and Raman scattering spectrometry — to create complementary vibrational spectroscopy. The new technique employs IR absorption and...
Tip-Enhanced Raman Spectroscopy Provides 1-nm Resolution
BERLIN, Sept. 6, 2019 — Tip-enhanced resonance Raman spectroscopy (TERRS) has been demonstrated by a research team at Fritz-Haber Institute. The results suggest that TERRS could offer a new approach for the atomic-scale optical characterization of local electronic states....
Nanoscale Photon Diode Could Further Next-Gen Computing Technologies
STANFORD, Calif., July 29, 2019 — Researchers at Stanford University are designing a way to make a photon diode, a device that allows light to flow in only one direction, small enough for consumer electronics. They have tested their design with computer simulations and calculations...
Scientific Lasers Deliver Ease of Use, Greater Reliability
May 1, 2018 — Ultrafast lasers are the dominant laser source for scientific applications. Two key technical trends are emerging that support several diverse applications. The first development is the emergence of ytterbium fiber (Yb-fiber) as a reliable...
Onboard Lidar Detects Turbulence, Volcanic Ash Near and Far
Dec 22, 2017 — The accurate measurement of relative air speed, temperature and pressure is essential for the flight control system to operate safely and economically within the operational envelope and set flight corridor. Air speed is typically measured using...
Specialty Fibers Revolutionize Sensing
Jul 21, 2017 — Optical fiber has changed the world by providing millions of kilometers of telecommunication fiber that have transformed how we communicate. But beyond telecommunications, optical fibers are making enormous impacts on both sensing applications and...
Raman-Based Approach Images Biological Processes in Action
MARSEILLE, France, July 14, 2017 — A fast, novel imaging technique could improve molecular-scale understanding of the biological processes involved in the early stages of disease. The technique uses polarization-resolved coherent Raman scattering (polar-CRS) to reveal a...
Spectroscopy Heading Toward 'Fantastic Voyage'
Feb 10, 2016 — When Sir Isaac Newton discovered that the white light from the sun could be dispersed into a continuous series of colors — a phenomenon he described as a “spectrum” — he essentially started the engine for the science of...
Enhanced CARS Enables High-Speed Imaging of Tissues
GAITHERSBURG, Md., and CLEVELAND, July 23, 2014 — An enhanced spectroscopy technique for analyzing biological cells and tissues delivers stronger signals than those attained through conventional practices. A team from the National Institute of Standards and Technology, in conjunction with the...
Moving Raman Spectroscopy into the Clinic
Jun 9, 2014 — Raman spectroscopy’s molecular sensitivity makes it promising for clinical applications: It can identify pathogens much faster than current methods, investigate circulating tumor cells, help surgeons distinguish tumors from healthy tissue and...
Quantum Communications Finds Many Paths to Commercialization
Feb 13, 2014 — From quantum repeaters and single-photon detectors to space satellites, photonics promises to bring quantum encryption to the mainstream. Quantum communications has already been proved possible over short distances. Via fiber optics, quantum key...
Raman Scattering Sped Up for Microscopy
GARCHING, Germany, Oct. 18, 2013 — Improvements to Raman spectroscopy using laser frequency combs allow multiple signals from different parts of a molecule — or even different molecules — to be monitored simultaneously using a single detector. The advance is seen as a...
Optical Sensors Watch What We Eat
Jun 1, 2013 — Optics technologies are advancing food safety applications. Natural pathogens. Food fraud and adulteration. Bioterrorism. Food safety is more of a concern today than it’s ever been before. Because the path from producer to consumer is...
Training Light to Cool Materials
BETHLEHEM, Pa., Oct. 19, 2012 — By exploiting the resonance behaviors of opposing light-scattering phenomena, photons may one day be used to cool the materials through which they pass, rather than heating them. The breakthrough could lead to smaller, lighter and cheaper...
Light Scattering Controlled in Graphene
BERKELEY, Calif., March 21, 2011 — Controlling the way light is scattered in graphene has been achieved, providing a new tool for the study of these single sheets of carbon that may lead to practical applications for controlling light and electronic states in nanometer-scale devices...
Heat, Dissipation Measured at Molecular Level
HOUSTON, Dec. 29, 2010 — Researchers have figured out a way to determine the temperature of a molecule or flowing electrons by using Raman spectroscopy combined with an optical antenna. A new paper from the lab of Douglas Natelson, a Rice University professor of...
Quantum Dots Are Finding Their Place in the World
Apr 12, 2010 — There has been a panoply of research into the next big thing in quantum dots – those semiconducting artificial atoms that are ubiquitous in fluorescence imaging, biological and chemical sensing, and display applications. Quantum dots of more...
Fiber laser reaches record length
BIRMINGHAM, UK – In a bid to push the boundaries of laser science, a team of scientists from the UK, Spain and Russia has built the longest-ever fiber laser cavity. The group’s aim was to find out just how long it could make a fiber laser cavity in which lasing with...
Diamonds sparkle in Raman application
SYDNEY, Australia – Researchers from Macquarie University and from the Defence Science and Technology Organisation (DSTO) in Edinburgh have developed a diamond Raman laser with 63.5 percent efficiency, taking diamond into the same conversion league as other Raman laser...
Molecules Made Mini Lasers
CAMBRIDGE, Mass., Oct. 21, 2009 -- A new optical microscopy technique squeezes photons out of nonfluorescent molecules to provide 3-D images of living cells and tissues for applications in medical imaging and biological research.
Nanomedical Advances Sought
WEST LAFAYETTE, Ind., & SEOUL, South Korea, July 10, 2007 -- A new nine-year collaboration between scientists in the US and South Korea will combine new imaging, biosensing and nanomedical techniques in an effort to advance medical diagnosis and treatment to the molecular level. Research teams from Purdue...
Victoria University Appoints First Nanotech Professor
May 29, 2007 — Victoria University of Wellington, New Zealand, has appointed scientist Pablo Etchegoin as its first professor of nanotechnology, effective July 1. Etchegoin, currently an associate professor in the School of Chemical & Physical Sciences and a...
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May 2024
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