Experimental critical dynamics of 3-methyl pyridine/D_{2}O mixtures without and with antagonistic salt
We observed criticality in the structure and dynamics of a three-dimensional (3D) and two-dimensional (2D) Ising system consisting of 3-methyl pyridine (3MP)/D_{2}O without and with antagonistic salt. We could describe both dynamic criticalities by the Kawasaki crossover function. The dynamic critic...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2023-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.023053 |
| _version_ | 1797210519882432512 |
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| author | Henrich Frielinghaus Purushottam S. Dubey Baohu Wu Mary Odom Feifei Zheng Eunjoo Shin Piotr Zolnierczuk Olaf Holderer Stephan Förster Theresia Heiden-Hecht |
| author_facet | Henrich Frielinghaus Purushottam S. Dubey Baohu Wu Mary Odom Feifei Zheng Eunjoo Shin Piotr Zolnierczuk Olaf Holderer Stephan Förster Theresia Heiden-Hecht |
| author_sort | Henrich Frielinghaus |
| collection | DOAJ |
| description | We observed criticality in the structure and dynamics of a three-dimensional (3D) and two-dimensional (2D) Ising system consisting of 3-methyl pyridine (3MP)/D_{2}O without and with antagonistic salt. We could describe both dynamic criticalities by the Kawasaki crossover function. The dynamic critical exponent was z=0.063±0.020 and 0.005±0.019 for three and two dimensions, which confirms earlier observations in the 3D case and confirms expectations in the 2D case. The amplitudes of the critical dynamics are governed by the bare viscosities experimentally, and by the coefficient R theoretically [the latter is proportional to (4−d)^{−1} with the dimensionality d]. This finding is in accordance with the lubrication effect [N. Gov, A. G. Zilman, and S. Safran, Phys. Rev. E 70, 011104 (2004)1539-375510.1103/PhysRevE.70.011104], which is also connected to lamellar systems of the Brazovskii criticality [M. Gvaramia et al., Colloid Polym. Sci. 297, 1507 (2019)0303-402X10.1007/s00396-019-04567-6]. This lubrication effect is tightly connected to a laminar flow enforced by the domain structure, and it also holds for our 2D Ising system. The experimental techniques employed were small-angle neutron and x-rays scattering for the static criticality, and dynamic light scattering and neutron spin echo spectroscopy for the critical dynamics. Furthermore, the criticality of the viscosities was measured. |
| first_indexed | 2024-04-24T10:11:53Z |
| format | Article |
| id | doaj.art-8624704ea01144eb870a2484ac0a2488 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:11:53Z |
| publishDate | 2023-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-8624704ea01144eb870a2484ac0a24882024-04-12T17:30:27ZengAmerican Physical SocietyPhysical Review Research2643-15642023-04-015202305310.1103/PhysRevResearch.5.023053Experimental critical dynamics of 3-methyl pyridine/D_{2}O mixtures without and with antagonistic saltHenrich FrielinghausPurushottam S. DubeyBaohu WuMary OdomFeifei ZhengEunjoo ShinPiotr ZolnierczukOlaf HoldererStephan FörsterTheresia Heiden-HechtWe observed criticality in the structure and dynamics of a three-dimensional (3D) and two-dimensional (2D) Ising system consisting of 3-methyl pyridine (3MP)/D_{2}O without and with antagonistic salt. We could describe both dynamic criticalities by the Kawasaki crossover function. The dynamic critical exponent was z=0.063±0.020 and 0.005±0.019 for three and two dimensions, which confirms earlier observations in the 3D case and confirms expectations in the 2D case. The amplitudes of the critical dynamics are governed by the bare viscosities experimentally, and by the coefficient R theoretically [the latter is proportional to (4−d)^{−1} with the dimensionality d]. This finding is in accordance with the lubrication effect [N. Gov, A. G. Zilman, and S. Safran, Phys. Rev. E 70, 011104 (2004)1539-375510.1103/PhysRevE.70.011104], which is also connected to lamellar systems of the Brazovskii criticality [M. Gvaramia et al., Colloid Polym. Sci. 297, 1507 (2019)0303-402X10.1007/s00396-019-04567-6]. This lubrication effect is tightly connected to a laminar flow enforced by the domain structure, and it also holds for our 2D Ising system. The experimental techniques employed were small-angle neutron and x-rays scattering for the static criticality, and dynamic light scattering and neutron spin echo spectroscopy for the critical dynamics. Furthermore, the criticality of the viscosities was measured.http://doi.org/10.1103/PhysRevResearch.5.023053 |
| spellingShingle | Henrich Frielinghaus Purushottam S. Dubey Baohu Wu Mary Odom Feifei Zheng Eunjoo Shin Piotr Zolnierczuk Olaf Holderer Stephan Förster Theresia Heiden-Hecht Experimental critical dynamics of 3-methyl pyridine/D_{2}O mixtures without and with antagonistic salt Physical Review Research |
| title | Experimental critical dynamics of 3-methyl pyridine/D_{2}O mixtures without and with antagonistic salt |
| title_full | Experimental critical dynamics of 3-methyl pyridine/D_{2}O mixtures without and with antagonistic salt |
| title_fullStr | Experimental critical dynamics of 3-methyl pyridine/D_{2}O mixtures without and with antagonistic salt |
| title_full_unstemmed | Experimental critical dynamics of 3-methyl pyridine/D_{2}O mixtures without and with antagonistic salt |
| title_short | Experimental critical dynamics of 3-methyl pyridine/D_{2}O mixtures without and with antagonistic salt |
| title_sort | experimental critical dynamics of 3 methyl pyridine d 2 o mixtures without and with antagonistic salt |
| url | http://doi.org/10.1103/PhysRevResearch.5.023053 |
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