Dual Raman-Brillouin Microscope for Chemical and Mechanical Characterization and Imaging.
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We present a unique confocal microscope capable of measuring the Raman and Brillouin spectra simultaneously from a single spatial location. Raman and Brillouin scattering offer complementary information about a material's chemical and mechanical structure, respectively, and concurrent monitoring of both of these spectra would set a new standard for material characterization. We achieve this by applying recent innovations in Brillouin spectroscopy that reduce the necessary acquisition times to durations comparable to conventional Raman spectroscopy while attaining a high level of spectral accuracy. To demonstrate the potential of the system, we map the Raman and Brillouin spectra of a molded poly(ethylene glycol) diacrylate (PEGDA) hydrogel sample in cyclohexane to create two-dimensional images with high contrast at microscale resolutions. This powerful tool has the potential for very diverse analytical applications in basic science, industry, and medicine.
author list (cited authors)
Traverso, A. J., Thompson, J. V., Steelman, Z. A., Meng, Z., Scully, M. O., & Yakovlev, V. V.
complete list of authors
Traverso, Andrew J||Thompson, Jonathan V||Steelman, Zachary A||Meng, Zhaokai||Scully, Marlan O||Yakovlev, Vladislav V