Collective directional locking of colloidal monolayers on a periodic substrate
We investigate the directional locking effects that arise when a monolayer of paramagnetic colloidal particles is driven across a triangular lattice of magnetic bubbles. We use an external rotating magnetic field to generate a two-dimensional traveling wave ratchet forcing the transport of particles...
| Authors: | ; ; ; |
|---|---|
| Format: | Article |
| Status: | Published version |
| Publication date: | 2020 |
| Country: | España |
| Institution: | Universidad de Barcelona |
| Repository: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/158946 |
| Online Access: | https://hdl.handle.net/2445/158946 |
| Access Level: | Open access |
| Keyword: | Col·loides Matèria condensada tova Colloids Soft condensed matter |
| _version_ | 1878738760622931968 |
|---|---|
| author | Stoop, Ralph L. |
| author2 | Straube, Arthur V. Johansen, Tom H. Tierno, Pietro |
| author2_role | author author author |
| author_browse | Johansen, Tom H. Stoop, Ralph L. Straube, Arthur V. Tierno, Pietro |
| author_facet | Stoop, Ralph L. Straube, Arthur V. Johansen, Tom H. Tierno, Pietro |
| author_role | author |
| collection | Dipòsit Digital de la UB |
| description | We investigate the directional locking effects that arise when a monolayer of paramagnetic colloidal particles is driven across a triangular lattice of magnetic bubbles. We use an external rotating magnetic field to generate a two-dimensional traveling wave ratchet forcing the transport of particles along a direction that intersects two crystallographic axes of the lattice. We find that, while single particles show no preferred direction, collective effects induce transversal current and directional locking at high density via a spontaneous symmetry breaking. The colloidal current may be polarized via an additional bias field that makes one transport direction energetically preferred. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_b49ef189c19c8ab55c44f83ff4e56264 |
| institution | Universidad de Barcelona |
| instname_str | Universidad de Barcelona |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:diposit.ub.edu:2445/158946 |
| publishDate | 2020 |
| publishDateSort | 2020 |
| publisher | American Physical Society |
| publisherStr | American Physical Society |
| reponame_str | Dipòsit Digital de la UB |
| spelling | Collective directional locking of colloidal monolayers on a periodic substrate Stoop, Ralph L. Straube, Arthur V. Johansen, Tom H. Tierno, Pietro Col·loides Matèria condensada tova Colloids Soft condensed matter We investigate the directional locking effects that arise when a monolayer of paramagnetic colloidal particles is driven across a triangular lattice of magnetic bubbles. We use an external rotating magnetic field to generate a two-dimensional traveling wave ratchet forcing the transport of particles along a direction that intersects two crystallographic axes of the lattice. We find that, while single particles show no preferred direction, collective effects induce transversal current and directional locking at high density via a spontaneous symmetry breaking. The colloidal current may be polarized via an additional bias field that makes one transport direction energetically preferred. American Physical Society https://hdl.handle.net/2445/158946 |
| spellingShingle | Collective directional locking of colloidal monolayers on a periodic substrate Stoop, Ralph L. Col·loides Matèria condensada tova Colloids Soft condensed matter |
| status_str | publishedVersion |
| title | Collective directional locking of colloidal monolayers on a periodic substrate |
| title_full | Collective directional locking of colloidal monolayers on a periodic substrate |
| title_fullStr | Collective directional locking of colloidal monolayers on a periodic substrate |
| title_full_unstemmed | Collective directional locking of colloidal monolayers on a periodic substrate |
| title_short | Collective directional locking of colloidal monolayers on a periodic substrate |
| title_sort | Collective directional locking of colloidal monolayers on a periodic substrate |
| topic | Col·loides Matèria condensada tova Colloids Soft condensed matter |
| topic_facet | Col·loides Matèria condensada tova Colloids Soft condensed matter |
| url | https://hdl.handle.net/2445/158946 |