Experimental evolution of active Brownian grains driven by quantum effects in superfluid helium
Abstract Complex structures, consisting of a large number of interacting subsystems, have the ability to self-organize and evolve, when the scattering of energy coming from the outside ensures the maintenance of stationary ordered structures with an entropy less than the equilibrium entropy. One of...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-09523-z |
| _version_ | 1818022519056105472 |
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| author | Oleg F. Petrov Roman E. Boltnev Mikhail M. Vasiliev |
| author_facet | Oleg F. Petrov Roman E. Boltnev Mikhail M. Vasiliev |
| author_sort | Oleg F. Petrov |
| collection | DOAJ |
| description | Abstract Complex structures, consisting of a large number of interacting subsystems, have the ability to self-organize and evolve, when the scattering of energy coming from the outside ensures the maintenance of stationary ordered structures with an entropy less than the equilibrium entropy. One of the fundamental problems here is the role of quantum phenomena in the evolution of macroscopic objects. We provide experimental evidence for the active Brownian motion and evolution of structures driven by quantum effects for micron-sized grains levitating in superfluid helium. The active Brownian motion of grains was induced by quantum turbulence during the absorption of laser irradiation by grains. The intensity of Brownian motion associated with quantum vortices increased by 6–7 orders of magnitude compared to the values from the Einstein formula. We observed the grain structures in a state far from thermodynamic equilibrium and their evolution to more complex organized structures with lower entropy due to the quantum mechanism of exceedingly high entropy loss in superfluid helium. |
| first_indexed | 2024-12-10T03:29:43Z |
| format | Article |
| id | doaj.art-0b4fa72c5ce242b9872cc1f203f62029 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-10T03:29:43Z |
| publishDate | 2022-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-0b4fa72c5ce242b9872cc1f203f620292022-12-22T02:03:50ZengNature PortfolioScientific Reports2045-23222022-04-0112111410.1038/s41598-022-09523-zExperimental evolution of active Brownian grains driven by quantum effects in superfluid heliumOleg F. Petrov0Roman E. Boltnev1Mikhail M. Vasiliev2Joint Institute for High Temperatures, Russian Academy of SciencesJoint Institute for High Temperatures, Russian Academy of SciencesJoint Institute for High Temperatures, Russian Academy of SciencesAbstract Complex structures, consisting of a large number of interacting subsystems, have the ability to self-organize and evolve, when the scattering of energy coming from the outside ensures the maintenance of stationary ordered structures with an entropy less than the equilibrium entropy. One of the fundamental problems here is the role of quantum phenomena in the evolution of macroscopic objects. We provide experimental evidence for the active Brownian motion and evolution of structures driven by quantum effects for micron-sized grains levitating in superfluid helium. The active Brownian motion of grains was induced by quantum turbulence during the absorption of laser irradiation by grains. The intensity of Brownian motion associated with quantum vortices increased by 6–7 orders of magnitude compared to the values from the Einstein formula. We observed the grain structures in a state far from thermodynamic equilibrium and their evolution to more complex organized structures with lower entropy due to the quantum mechanism of exceedingly high entropy loss in superfluid helium.https://doi.org/10.1038/s41598-022-09523-z |
| spellingShingle | Oleg F. Petrov Roman E. Boltnev Mikhail M. Vasiliev Experimental evolution of active Brownian grains driven by quantum effects in superfluid helium Scientific Reports |
| title | Experimental evolution of active Brownian grains driven by quantum effects in superfluid helium |
| title_full | Experimental evolution of active Brownian grains driven by quantum effects in superfluid helium |
| title_fullStr | Experimental evolution of active Brownian grains driven by quantum effects in superfluid helium |
| title_full_unstemmed | Experimental evolution of active Brownian grains driven by quantum effects in superfluid helium |
| title_short | Experimental evolution of active Brownian grains driven by quantum effects in superfluid helium |
| title_sort | experimental evolution of active brownian grains driven by quantum effects in superfluid helium |
| url | https://doi.org/10.1038/s41598-022-09523-z |
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