If you have heard of "light quanta" and know that one light corresponds to one energy (E=h ν), and molecules' (resonant) absorption and emission of light need to match this energy (Δ Ε=h ν), then the rest of the story is easy to explain.…… 【More】

Raman spectroscopy: When light is irradiated onto a substance, photons collide with electrons inside the molecule. If a inelastic collision occurs, a portion of the energy of the photons is transferred to the electrons, and the frequency of the scattered light is not equal to the frequency of the incident lig…… 【More】

Scientists use Raman spectroscopy to understand the chemical composition and structure of substances. We focus a single wavelength laser onto the sample. A small amount of light will interact with the chemical bonds of substances and change color during scattering. We can use a Raman spectrometer to measure i…… 【More】

Raman imaging displays the spatial distribution of spectral information in the sample. We use a micro Raman spectrometer to collect spectral information from a point array on or within the sample. Raman imaging technology can easily reveal changes in the chemical and structural properties of substances in one…… 【More】