Quantitative surface plasmon resonance imaging: a simple approach to automated angle scanning.
Here we present an automated angle-scanning surface plasmon resonance imaging (SPRi) instrument which provides multiplexed, quantitative reflectance data over a wide angular range. Angle-dependent artifacts, which arise from the simple optical setup, are corrected using software. This enables monitoring of significantly different surface coatings in many solvents, which would be outside the dynamic range of typical fixed-angle instruments. Operation in the visible to near-infrared range without the need for reconfiguration extends the instrument capabilities to increase sensitivity or to investigate the optical properties of surface films. This instrument provides maximum flexibility to study a wide range of systems with full exploitation of the quantitative capabilities of SPRi achieved by fitting data to the Fresnel model.
Ruemmele
Julia A
JA
Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA.
Golden
Mary S
MS
Gao
Yang
Y
Cornelius
Eric M
EM
Anderson
Mary E
ME
Postelnicu
Lucian
L
Georgiadis
Rosina M
RM