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Hadamard Transform Raman Microscopy of Laser-Modified Graphite Electrodes

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In this communication, we describe the application of Hadamard transform Raman microscopy to the imaging of edge plane microstructures in laser-modified highly ordered pyrolitic graphite (HOPG) electrodes. Hadamard transform Raman microscopy is a highly selective method of analysis which can image thermally sensitive materials at micron-scale spatial resolution. The technique is capable of imaging relatively weak Raman scatterers in only a few minutes. The current multichannel microscope generates images having 255 × 256 pixels. In addition, we characterize an imaging artifact present in our current system, as well as apply a first-order correction for the problem.

Keywords: Charge-coupled devices; Graphite electrodes; Hadamard transform; Microscopy; Raman spectroscopy

Document Type: Research Article


Affiliations: 1: Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109 2: Department of Chemistry, Ohio State University, Columbus, Ohio 43210

Publication date: September 1, 1990

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