Search
Menu
PI Physik Instrumente - Revolution In Photonics Align LW LB 3/24

“Smartdust” shines new light on SERS

Facebook X LinkedIn Email
Marie Freebody, [email protected]

Layering dust onto a surface you wish to study may seem counterintuitive, but scientists in China and the US claim that their “smartdust” will enable Raman spectroscopy to be used on any surface. Surface-enhanced Raman scattering (SERS) is used widely for detecting molecules and trace materials. Although the powerful spectroscopy technique is popular among those working in inspection and analysis, the enhanced Raman signals needed for SERS are generated efficiently only by textured metal surfaces such as gold, silver or copper. This severely limits the breadth of possible...Read full article

Related content from Photonics Media



    Articles


    Products


    Photonics Handbook Articles


    White Papers


    Webinars


    Photonics Dictionary Terms


    Media


    Photonics Buyers' Guide Categories


    Companies
    Published: September 2010
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    raman spectroscopy
    Raman spectroscopy is a technique used in analytical chemistry and physics to study vibrational, rotational, and other low-frequency modes in a system. Named after the Indian physicist Sir C.V. Raman who discovered the phenomenon in 1928, Raman spectroscopy provides information about molecular vibrations by measuring the inelastic scattering of monochromatic light. Here is a breakdown of the process: Incident light: A monochromatic (single wavelength) light, usually from a laser, is...
    surface-enhanced raman scattering
    Surface-enhanced Raman scattering (SERS) is a powerful analytical technique that enhances the Raman scattering signal of molecules adsorbed on or near certain nanostructured surfaces. Raman scattering is a process in which light interacts with molecular vibrations, providing a fingerprint-like spectrum that can be used to identify and characterize chemical compounds. SERS significantly amplifies the Raman signal, making it more sensitive and allowing for the detection of molecules at very low...
    tip-enhanced raman spectroscopy
    A spectroscopic technique that combines the high chemical specificity of Raman scattering and signal sensitivity provided by surface plasmon resonance enhancement, with the nanoscale spatial resolution of scanning probe microscopy (SPM). Supported by a sharp metallized-SPM tip, tip-enhanced Raman spectroscopy (TERS) enables label-free detection of surface components in multicomponent samples with ultrahigh spatial resolution, making it suitable for studying nanomaterials.
    AsiaPhotonicsBiophotonicsGeorgia Institute of TechnologyImagingMarie FreebodyMicroscopynanoNatureRaman spectroscopySERSshell-isolated nanoparticle-enhanced Raman spectroscopySHINERSSmartdustsurface-enhanced Raman scatteringTERSTiantip-enhanced Raman spectroscopyWangXiamen UniversityZhong Lin WangZhongqun Tian

    We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.