An electrical molecular motor driven by angular momentum transfer
Fuente:
arXiv
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| Autores principales: | , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866929747240419328 |
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| author | Skolaut, Julian Marek, Štěpán Balzer, Nico Camarasa-Gómez, María Wilhelm, Jan Lukášek, Jan Valášek, Michal Gerhard, Lukas Evers, Ferdinand Mayor, Marcel Wulfhekel, Wulf Korytár, Richard |
| author_facet | Skolaut, Julian Marek, Štěpán Balzer, Nico Camarasa-Gómez, María Wilhelm, Jan Lukášek, Jan Valášek, Michal Gerhard, Lukas Evers, Ferdinand Mayor, Marcel Wulfhekel, Wulf Korytár, Richard |
| contents | The generation of unidirectional motion has been a long-standing challenge in engineering of molecular motors and, more generally, machines. A molecular motor is characterized by a set of low energy states that differ in their configuration, i.e. position or rotation. In biology and Feringa-type motors, unidirectional motion is driven by excitation of the molecule into a high-energy transitional state followed by a directional relaxation back to a low-energy state. Directionality is created by a steric hindrance for movement along one of the directions on the path from the excited state back to a low energy state. Here, we showcase a principle mechanism for the generation of unidirectional rotation of a molecule without the need of steric hindrance and transitional excited states. The chemical design of the molecule consisting of a platform, upright axle and chiral rotor moiety enables a rotation mechanism that relies on the transfer of orbital angular momentum from the driving current to the rotor. The transfer is mediated via orbital currents that are carried by helical orbitals in the axle. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_05351 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | An electrical molecular motor driven by angular momentum transfer Skolaut, Julian Marek, Štěpán Balzer, Nico Camarasa-Gómez, María Wilhelm, Jan Lukášek, Jan Valášek, Michal Gerhard, Lukas Evers, Ferdinand Mayor, Marcel Wulfhekel, Wulf Korytár, Richard Chemical Physics Biological Physics The generation of unidirectional motion has been a long-standing challenge in engineering of molecular motors and, more generally, machines. A molecular motor is characterized by a set of low energy states that differ in their configuration, i.e. position or rotation. In biology and Feringa-type motors, unidirectional motion is driven by excitation of the molecule into a high-energy transitional state followed by a directional relaxation back to a low-energy state. Directionality is created by a steric hindrance for movement along one of the directions on the path from the excited state back to a low energy state. Here, we showcase a principle mechanism for the generation of unidirectional rotation of a molecule without the need of steric hindrance and transitional excited states. The chemical design of the molecule consisting of a platform, upright axle and chiral rotor moiety enables a rotation mechanism that relies on the transfer of orbital angular momentum from the driving current to the rotor. The transfer is mediated via orbital currents that are carried by helical orbitals in the axle. |
| title | An electrical molecular motor driven by angular momentum transfer |
| topic | Chemical Physics Biological Physics |
| url | https://arxiv.org/abs/2503.05351 |