Chemical analysis of acoustically levitated drops by Raman spectroscopy |
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| Authors: | Rudolf Tuckermann Ljiljana Puskar Mahta Zavabeti Ryo Sekine and Don McNaughton |
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| Institution: | (1) Institute of Physical Chemistry, University of G?ttingen, Tamannstr. 6, 37077 G?ttingen, Germany;(2) Center for Biospectroscopy and School of Chemistry, Monash University, Wellington Rd, Clayton, Victoria, 3800,, Australia;(3) Australian Synchrotron, 800 Blackburn Rd, Clayton, Victoria, 3168,, Australia |
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| Abstract: | An experimental apparatus combining Raman spectroscopy with acoustic levitation, Raman acoustic levitation spectroscopy (RALS),
is investigated in the field of physical and chemical analytics. Whereas acoustic levitation enables the contactless handling
of microsized samples, Raman spectroscopy offers the advantage of a noninvasive method without complex sample preparation.
After carrying out some systematic tests to probe the sensitivity of the technique to drop size, shape, and position, RALS
has been successfully applied in monitoring sample dilution and preconcentration, evaporation, crystallization, an acid–base
reaction, and analytes in a surface-enhanced Raman spectroscopy colloidal suspension.
Figure We have systematically investigated the analytical potential of Raman spectroscopy of samples in acoustically levitated drops. |
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| Keywords: | Raman spectroscopy Acoustic levitation Drop evaporation Crystallization Microtitration |
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