New developments in planar array infrared spectroscopy.
A planar array infrared (PA-IR) spectrograph offers several advantages over other infrared approaches, including high acquisition rate and sensitivity. However, it suffers from some important drawbacks, such as a limited spectral range and a significant curvature of the recorded spectral images, which still need to be addressed. In this article, we present new developments in PA-IR spectroscopy that overcome these drawbacks. First, a data processing method for the correction of the curvature observed in the spectral images has been developed and refined. In addition, a dual-beam instrument that allows the simultaneous recording of two independent spectral images has been developed. These two improvements have been combined to demonstrate the real-time background correction capability of PA-IR instruments. Finally, the accessible spectral range of the PA-IR spectrograph has been extended to cover simultaneously the methylene stretching (3200-2800 cm(-1)) and the finger-print (2000-1000 cm(-1)) spectral regions.
Pelletier
Isabelle
I
Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, USA.
Pellerin
Christian
C
Chase
D Bruce
DB
Rabolt
John F
JF
D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006838:Hydrocarbons; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods*; D008697:Methane / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D009862:Online Systems / Q000295:instrumentation; D011137:Polystyrenes / Q000032:analysis* / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013055:Spectrophotometry, Infrared / Q000295:instrumentation* / Q000379:methods*; D014159:Transducers
D006838:Hydrocarbons; D011137:Polystyrenes; C030011:carbene; D008697:Methane