Journal ArticleDOI
Real-time sampling electronics for double modulation experiments with Fourier transform infrared spectrometers
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In this article, a synchronous real-time analog sampling method for obtaining the sum and difference interferograms in double modulation Fourier transform infrared absorption experiments is described, and the application of this sampling methodology to polarization-modulation FTIR measurements of thin films at metal surfaces is demonstrated.Abstract:
A novel synchronous real‐time analog sampling method for obtaining the sum and difference interferograms in double modulation Fourier transform infrared absorption experiments is described, and the application of this sampling methodology to polarization‐modulation FTIR measurements of thin films at metal surfaces is demonstrated. A quadratic approximation of the background signal is used to calculate the difference interferogram. The demodulation of a test waveform with the real‐time sampling electronics reveals how the bandwidth limitations of previous double modulation experiments on FTIR interferometers that employed lock‐in amplifiers have been eliminated.read more
Citations
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Journal ArticleDOI
Surface Plasmon Resonance Imaging Studies of Protein-Carbohydrate Interactions
TL;DR: Carbohydrate arrays fabricated on gold films were used to study carbohydrate-protein interactions with surface plasmon resonance (SPR) imaging and adsorption isotherms for the interactions of ConA and jacalin to the carbohydrate surfaces were constructed.
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A Multistep Chemical Modification Procedure To Create DNA Arrays on Gold Surfaces for the Study of Protein−DNA Interactions with Surface Plasmon Resonance Imaging
TL;DR: A multistep surface modification procedure for the creation of DNA arrays on chemically modified gold surfaces that can be used in surface plasmon resonance (SPR) imaging studies of protein−DNA interactions is demonstrated in this article.
Journal ArticleDOI
Fabrication of histidine-tagged fusion protein arrays for surface plasmon resonance imaging studies of protein-protein and protein-DNA interactions
TL;DR: The creation and characterization of histidine-tagged fusion protein arrays using nitrilotriacetic acid (NTA) capture probes on gold thin films for the study of protein-protein and protein-DNA interactions is described.
Journal ArticleDOI
Amide and Ester Surface Attachment Reactions for Alkanethiol Monolayers at Gold Surfaces As Studied by Polarization Modulation Fourier Transform Infrared Spectroscopy
Robert V. Duevel,Robert M. Corn +1 more
TL;DR: In this paper, the modification of alkanethiol monolayers via amide and ester formation reactions is demonstrated as a methodology for attaching monolayer and submonolayer coveragea of specific chemical species onto metal electrodes.
References
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Book
Fourier Transform Infrared Spectrometry
TL;DR: The theory and instrumentation for Fourier transform infrared spectrometry are discussed, and important areas of chemistry include atmospheric monitoring, surface chemistry, and on-line identification of chromatographically separated materials.
Journal ArticleDOI
Reflection Method for Obtaining the Infrared Spectrum of a Thin Layer on a Metal Surface
TL;DR: In this paper, the requirements on a spectroscopic system, which uses the insights of these calculations, are discussed under the realistic conditions of multiple reflections with a low f/number beam.
Journal ArticleDOI
Polarization modulation Fourier transform infrared reflectance measurements of thin films and monolayers at metal surfaces utilizing real-time sampling electronics
TL;DR: In this paper, a real-time Fourier transform infrared (FTIR) spectrometer using photoelastic modulation of the FTIR beam polarization and a novel sampling methodology was proposed.
Journal ArticleDOI
A method for measuring infrared reflection—Absorption spectra of molecules adsorbed on low-area surfaces at monolayer and submonolayer concentrations
TL;DR: In this paper, an infrared reflection-absorption spectrometer (IRRAS) was developed for the measurement of IRRAS, which is a very sensitive technique which can easily detect the vibrational spectra of many adsorbates at submonolayer concentrations on low-area surfaces.
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