Chemical Engineering & Technology
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Cover Chem. Eng. Technol. 7/2015
Insight by Nanostars: SERS-Sensing using Polymer/Silver Composite Particles in Flow Arrangements
Chemical monitoring is a key demand for controlled processes in microreaction technology. Surface enhanced Raman scattering (SERS) gives the opportunity to get vibrational spectra even at moderate and lower concentrations. The introduction of silver nanoparticles into a nanoporous polymer microparticle and the implementation of such particles into a microflow arrangement allow a SERS sensing in a quasi-continuous process by alternating measurement and rinsing. The title collage shows the principle of fluidic arrangement for SERS sensing in front of the background of a polymer surface with incorporated Ag nanoparticles (“star sky”) with a high Ag-loaded sensor particle at lower magnification (“moon”) and a part of a polymer particle with incorporated small silver nanoparticles at higher magnification (“planet surface”).
N. Visaveliya, S. Lenke, A. Groß, J. M. Köhler*
Microflow SERS Measurements Using Sensing Particles of Polyacrylamide/Silver Composite Materials
Chem. Eng. Technol. 2015, 38 (7), 1144–1149