Spectroscopy
September 01, 2007
Departments
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While Fourier transform–infrared (FT-IR) spectroscopy is commonly thought of as a laboratory analytical technique for which annual demand tops $200 million worldwide, it is also becoming an important technique in the post-9/11 era of heightened security measures. FT-IR has several advantages over dispersive infrared that make it highly advantageous for most security applications. There are a fair number of application areas for FT-IR within the security instrumentation market.
September 01, 2007
Articles
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9
A novel method of transition metal (TM) (Cr, Co, and Fe)-doped nanocrystals fabrication based upon laser ablation was demonstrated. For the first time, mid-IR luminescence from TM:II-VI nanocrystals was reported.
September 01, 2007
Articles
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9
Diamonds are by far the world's most popular gemstone. Because of this popularity and the high prices of quality gemstones, there is a large market for cheaper counterfeit stones that resemble diamonds. Detecting these counterfeit stones can be a significant problem for diamond buyers when the stones are represented as the genuine article by unscrupulous sellers. Fourier transform-infrared (FT-IR) spectroscopy can be a useful tool for buyers and sellers to determine authenticity.
September 01, 2007
Chemometrics in Spectrosocpy
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In this month's installment, columnists Howard Mark and Jerome Workman, Jr. present the derivation of the principal component algorithm using elementary algebra.
September 01, 2007
Articles
22
9
Spectroscopy previews the 34th Annual Meeting of the FACSS, which will be held in Memphis, Tennessee.
September 01, 2007
The Baseline
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Columnist David Ball discusses the search for light sources that are more energy efficient than incandescent light bulbs. In particular, he focuses on light-emitting diodes.