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Terahertz (THz) time-domain spectroscopy was used to monitor collective mode shifts in l-serine, l-serine-2,3,3-d 3 , l-serine-d 4 , and l-serine-d 7 at both room and liquid nitrogen (LN 2 ) temperatures. Increasing the molecular mass by deuteration caused an expected absorbance red-shift; however, the magnitude of the displacement could not be predicted using normal...
Terahertz (THz) time-domain reflectance spectroscopy is evaluated as a technique for nondestructive analysis of sol–gels over the first week of aging without directly contacting or disturbing the sol–gels. In the sol–gels analyzed, tetramethyl orthosilicate (TMOS) is the precursor and polyamidoamine (PAMAM) dendrimers are incorporated into each of two sol–gel sample groups; a third control group contains...
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