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Hamamatsu Corp. - Earth Innovations LB 2/24

Transient Form of Two-Dimensional IR Spectroscopy
Shows Molecules in Motion

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Lynn M. Savage

Understanding the way that molecules operate means digging deeply — examining not only their structures, but also how they change shape under various conditions. Techniques such as nuclear magnetic resonance and x-ray crystallography help researchers visualize molecules down nearly to the atomic level, but they provide only a static image. On the other hand, two-dimensional infrared spectroscopy helps map molecular position and orientation, but only for molecules that are in equilibrium. Now scientists at Universität Zürich in Switzerland and at Ruhr-Universität Bochum in Germany...Read full article

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    Published: January 2007
    Glossary
    nuclear magnetic resonance
    A phenomenon, exploited for medical imaging, in which the nuclei of material placed in a strong magnetic field will absorb radio waves supplied by a transmitter at particular frequencies. The energy of the radio-frequency photons is used to promote the nucleus from a low-energy state, in which the nuclear spin is aligned parallel to the strong magnetic field, to a higher-energy state in which the spin is opposed to the field. When the source of the radio waves is turned off, many nuclei will...
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    x-ray crystallography
    The study of the arrangement of atoms in a crystal by means of x-rays.
    Basic ScienceFeaturesmoleculesnuclear magnetic resonancephotonicsSensors & Detectorsx-ray crystallography

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