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include near-infrared (IR) and mid-IR semiconductor laser-based absorption spectroscopy systems, ultraviolet (UV) to near-IR gas laser-based Raman spectroscopy systems, Fourier-transform IR spectrometers
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areas of the US have been attributed to the iron sulfide mineral pyrrhotite, in which its relative instability results in decomposition with associated staining, expansion, and pop-outs near concrete
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function of the hydrogen concentration. This information provides insight into the chemistry and physics of hydrogen adsorption/absorption, which is then used to identify the most promising avenues
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) Artificial Intelligence (AI)-based predictions. These instruments raise concerns about safety because they rely on black-box AI models and do not contain any guardrails if physical and/or digital parts
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typically employ near-UV (355 nm) lasers. This is problematic because specimens of interest are often nanostructures variously composed of semiconductors, metals, oxides, nitrides--and sometimes even
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), Dr. Howie Joress (howie.joress@nist.gov), Dr. Austin McDannald (austin.mcdannald@nist.gov), and Dr. Fan Zhang (fan.zhang@nist.gov). We encourage you to reach out to any of us with questions about the
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; narrow, symmetric peaks and flat baselines are readily obtained for most samples; signal averaging can be used to optimize signal-to-noise ratios; a wide range of molecular masses is accessible; and the
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on composition; (4) development of surface/near surface chemical analysis methods to differentiate material origins and to evaluate the degradation process; (5) development of methods to detect and analyze surface
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combs in the near-infrared and mid-infrared spectral regions. Our goal is to develop end-to-end capabilities in this area, including electromagnetic design and modeling of waveguides, cleanroom
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orientations in most engineering materials have some preferential distribution due to processing conditions and deformation history, referred to as crystallographic texture. This texture affects the initial