Chemical analysis of acoustically levitated drops by Raman spectroscopy.
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.
Institute of Physical Chemistry, University of Göttingen, Tamannstr. 6, 37077 Göttingen, Germany.
Rudolf
R
Tuckermann
Ljiljana
L
Puskar
Mahta
M
Zavabeti
Ryo
R
Sekine
Don
D
McNaughton
D000162:Acoustics / Q000295:instrumentation; D003460:Crystallization; D004121:Dimethyl Sulfoxide; D013059:Spectrum Analysis, Raman / Q000295:instrumentation / Q000379:methods*; D013499:Surface Properties; D014835:Volatilization
D004121:Dimethyl Sulfoxide