Atomic-Scale Visualization of Inertial Dynamics.
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| Title: | Atomic-Scale Visualization of Inertial Dynamics. |
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| Authors: | Lindenberg, A.M., Larsson, J., Sokolowski-Tinten, K., Gaffney, K. J., Blome, C., Synnergren, O., Sheppard, J., Caleman, C., MacPhee, A.G., Weinstein, D., Lowney, D.P., Allison, T.K., Matthews, T., Falcone, R.W., Cavalieri, A.L., Fritz, D.M., Lee, S.H., Bucksbaum, P.H., Reis, D.A., Rudati, J. |
| Source: | Science (pre-March 2025). 4/15/2005, Vol. 308 Issue 5720, p392-395. 4p. |
| Subjects: | Atoms, Quantum chemistry, Potential energy surfaces, Physical & theoretical chemistry, Femtochemistry, Phase transitions |
| Abstract: | The motion of atoms on interatomic potential energy surfaces isfundamental to the dynamics of liquids and solids. An accelerator-basedsource of femtosecond x-ray pulses allowed us to follow directly atomicdisplacements on an optically modified energy landscape, leadingeventually to the transition from crystalline solid to disorderedliquid. We show that, to first order in time, the dynamics are inertial,and we place constraints on the shape and curvature of thetransition-state potential energy surface. Our measurements point towardanalogies between this nonequilibrium phase transition and theshort-time dynamics intrinsic to equilibrium liquids. [ABSTRACT FROM AUTHOR] |
| Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | The motion of atoms on interatomic potential energy surfaces isfundamental to the dynamics of liquids and solids. An accelerator-basedsource of femtosecond x-ray pulses allowed us to follow directly atomicdisplacements on an optically modified energy landscape, leadingeventually to the transition from crystalline solid to disorderedliquid. We show that, to first order in time, the dynamics are inertial,and we place constraints on the shape and curvature of thetransition-state potential energy surface. Our measurements point towardanalogies between this nonequilibrium phase transition and theshort-time dynamics intrinsic to equilibrium liquids. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00368075 |
| DOI: | 10.1126/science.1107996 |
