Prof. Brian Cullum is Professor and Chair of the Department of Chemistry and Biochemistry at the University of Maryland Baltimore County (UMBC). His work in the area of optical sensing and imaging for biomedical and defense related applications has resulted in the publication of over 100 peer-reviewed papers, proceedings and book chapters/books and several patents. He serves/has served as on the editorial boards or as a guest editor on numerous journals including the Journal of Biomedical Optics (JBO), the Journal of Nanotechnology, the Journal of Nanobiotechnology, JSM Chemistry as well as other international journals in optical sensing and biophotonics. He serves as chair of the annual Smart Biomedical and Physiological Sensor Technologies Conference at SPIE Defense, Security and Sensing Symposium and was elected to the rank of Fellow of SPIE in 2014. His expertise includes plasmonic sensing, photoacoustic sensing, chemical imaging, non-linear optics and biophotonics. Most recently, Prof. Cullum has discovered and explored the novel optical phenomenon known as THORS (THermally-induced Optical Reflection of Sound) and its potential applications to standoff sensing and enhanced photoacoustic imaging in condensed matter.
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However, the morphology did not change. It was also observed that impurities such as magnesium oxide (MgO) affect the morphology significantly.
In this paper, a study of luminescent particles isolated in individual fiber wells has been performed to characterize the cross talk associated with these fiber bundles. Scanning-electron microscope (SEM) images provide nanometric characterization of the fiber array, while luminescent signals allow for the quantitation of cross talk between adjacent fiber elements. From these studies negligible cross-talk associated with both untapered and tapered bundles was found to exist.
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