[{"date_published":"2025-12-01T00:00:00Z","_id":"20847","arxiv":1,"corr_author":"1","publisher":"American Physical Society","acknowledgement":"This research was funded in whole or in part by the Austrian Science Fund (FWF) [Grant DOI: 10.55776/ESP298]. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant\r\nAgreement No. 949120). This research was supported by the Scientific Service Units of The Institute of Science and Technology Austria (ISTA) through resources provided by the Miba Machine Shop, Nanofabrication Facility, Scientific Computing Facility, and Lab Support Facility. We wish to acknowledge the crucial contributions of Alexandre Morin in getting the project off the ground, and Jack Merrin for creating the SU-8 deposition protocol used in the construction of our\r\ncells. We also wish to thank Kimberley Modic and Hamza Nasir for their work on single-particle characterization. ","article_processing_charge":"Yes (via OA deal)","oa":1,"issue":"6","external_id":{"arxiv":["2508.05643"]},"status":"public","file":[{"success":1,"creator":"dernst","access_level":"open_access","content_type":"application/pdf","checksum":"d593e933f976c3f3cde37ad66539d57d","file_id":"20862","file_name":"2025_PhysReviewE_Fitzgerald.pdf","date_updated":"2025-12-29T11:15:42Z","relation":"main_file","date_created":"2025-12-29T11:15:42Z","file_size":2131491}],"language":[{"iso":"eng"}],"department":[{"_id":"ScWa"}],"scopus_import":"1","doi":"10.1103/1ss8-31rb","PlanS_conform":"1","has_accepted_license":"1","OA_type":"hybrid","author":[{"id":"2df8ab8f-080d-11ed-979a-bfe651ca3afa","last_name":"Fitzgerald","full_name":"Fitzgerald, Eavan","first_name":"Eavan"},{"first_name":"Cécile","orcid":"0000-0002-1843-3803","id":"5f654c5d-04a1-11eb-ab36-ba9ffec58bd8","last_name":"Clavaud","full_name":"Clavaud, Cécile"},{"first_name":"Debasish","full_name":"Das, Debasish","last_name":"Das"},{"first_name":"Isaac C","orcid":"0000-0002-5010-6984","id":"a550210f-223c-11ec-8182-e2d45e817efb","last_name":"Lenton","full_name":"Lenton, Isaac C"},{"id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","last_name":"Waitukaitis","full_name":"Waitukaitis, Scott R","first_name":"Scott R","orcid":"0000-0002-2299-3176"}],"day":"01","ddc":["530"],"date_updated":"2025-12-29T11:19:34Z","title":"Rolling at right angles: Magnetic anisotropy enables dual-anisotropic active matter","license":"https://creativecommons.org/licenses/by/4.0/","project":[{"grant_number":"E 298","_id":"bd8eede5-d553-11ed-ba76-eaded0d13485","name":"MixQUIckR: Mixing with QUIncke Rollers"},{"call_identifier":"H2020","grant_number":"949120","_id":"0aa60e99-070f-11eb-9043-a6de6bdc3afa","name":"Tribocharge: a multi-scale approach to an enduring problem in physics"}],"ec_funded":1,"volume":112,"oa_version":"Published Version","article_number":"065418","article_type":"original","file_date_updated":"2025-12-29T11:15:42Z","OA_place":"publisher","month":"12","date_created":"2025-12-21T23:01:34Z","abstract":[{"lang":"eng","text":"We report on an experimental active matter system with motion restricted to four cardinal directions. Our particles are magnetite-doped colloidal spheres driven by the Quincke electrorotational instability. The absence of a magnetic field (|𝑩|=0) leads to circular trajectories interspersed with short spontaneous runs. Intermediate fields (|𝑩|≲20mT) linearize the motion along the axis perpendicular to 𝑩. At high magnetic fields, we observe the surprising emergence of a second, distinct linearization along the axis parallel to 𝑩. With numerical simulations, we show that this behavior can be explained by anisotropic magnetic susceptibility."}],"quality_controlled":"1","year":"2025","citation":{"mla":"Fitzgerald, Eavan, et al. “Rolling at Right Angles: Magnetic Anisotropy Enables Dual-Anisotropic Active Matter.” <i>Physical Review E</i>, vol. 112, no. 6, 065418, American Physical Society, 2025, doi:<a href=\"https://doi.org/10.1103/1ss8-31rb\">10.1103/1ss8-31rb</a>.","short":"E. Fitzgerald, C. Clavaud, D. Das, I.C. Lenton, S.R. Waitukaitis, Physical Review E 112 (2025).","apa":"Fitzgerald, E., Clavaud, C., Das, D., Lenton, I. C., &#38; Waitukaitis, S. R. (2025). Rolling at right angles: Magnetic anisotropy enables dual-anisotropic active matter. <i>Physical Review E</i>. American Physical Society. <a href=\"https://doi.org/10.1103/1ss8-31rb\">https://doi.org/10.1103/1ss8-31rb</a>","ama":"Fitzgerald E, Clavaud C, Das D, Lenton IC, Waitukaitis SR. Rolling at right angles: Magnetic anisotropy enables dual-anisotropic active matter. <i>Physical Review E</i>. 2025;112(6). doi:<a href=\"https://doi.org/10.1103/1ss8-31rb\">10.1103/1ss8-31rb</a>","ista":"Fitzgerald E, Clavaud C, Das D, Lenton IC, Waitukaitis SR. 2025. Rolling at right angles: Magnetic anisotropy enables dual-anisotropic active matter. Physical Review E. 112(6), 065418.","ieee":"E. Fitzgerald, C. Clavaud, D. Das, I. C. Lenton, and S. R. Waitukaitis, “Rolling at right angles: Magnetic anisotropy enables dual-anisotropic active matter,” <i>Physical Review E</i>, vol. 112, no. 6. American Physical Society, 2025.","chicago":"Fitzgerald, Eavan, Cécile Clavaud, Debasish Das, Isaac C Lenton, and Scott R Waitukaitis. “Rolling at Right Angles: Magnetic Anisotropy Enables Dual-Anisotropic Active Matter.” <i>Physical Review E</i>. American Physical Society, 2025. <a href=\"https://doi.org/10.1103/1ss8-31rb\">https://doi.org/10.1103/1ss8-31rb</a>."},"acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"},{"_id":"ScienComp"},{"_id":"LifeSc"}],"publication":"Physical Review E","type":"journal_article","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","image":"/images/cc_by.png","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"intvolume":"       112","publication_status":"published","publication_identifier":{"eissn":["2470-0053"],"issn":["2470-0045"]}},{"month":"08","DOAJ_listed":"1","OA_place":"publisher","type":"journal_article","publication":"Science Talks","quality_controlled":"1","year":"2022","citation":{"short":"C. Clavaud, Science Talks 3 (2022).","apa":"Clavaud, C. (2022). Shear thickening in dense suspensions: an experimental study. <i>Science Talks</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.sctalk.2022.100038\">https://doi.org/10.1016/j.sctalk.2022.100038</a>","mla":"Clavaud, Cécile. “Shear Thickening in Dense Suspensions: An Experimental Study.” <i>Science Talks</i>, vol. 3, 100038, Elsevier, 2022, doi:<a href=\"https://doi.org/10.1016/j.sctalk.2022.100038\">10.1016/j.sctalk.2022.100038</a>.","ama":"Clavaud C. Shear thickening in dense suspensions: an experimental study. <i>Science Talks</i>. 2022;3. doi:<a href=\"https://doi.org/10.1016/j.sctalk.2022.100038\">10.1016/j.sctalk.2022.100038</a>","ista":"Clavaud C. 2022. Shear thickening in dense suspensions: an experimental study. Science Talks. 3, 100038.","ieee":"C. Clavaud, “Shear thickening in dense suspensions: an experimental study,” <i>Science Talks</i>, vol. 3. Elsevier, 2022.","chicago":"Clavaud, Cécile. “Shear Thickening in Dense Suspensions: An Experimental Study.” <i>Science Talks</i>. Elsevier, 2022. <a href=\"https://doi.org/10.1016/j.sctalk.2022.100038\">https://doi.org/10.1016/j.sctalk.2022.100038</a>."},"date_created":"2024-12-01T23:01:55Z","abstract":[{"text":"Shear thickening is an intriguing rheological behaviour which consists in a brutal increase in the viscosity above a critical shear rate. It is famously encountered in suspensions of corn starch in water. Despite having been discovered in the early 1930's, its underlying mechanisms remained a mystery for a long time. In 2013–14, numerical and theoretical works [[1], [2], [3]] put forward a frictional transition scenario to explain this phenomenon.\r\nIn this talk, I will present experimental work investigating this frictional transition scenario. In order to test the ideas of this model, one has to go further than standard rheological techniques, since they do not provide access to the frictional state of the measured suspension. I will thus focus on the techniques that we developed in order to evidence the frictional transition and link it to the presence of a shear-thickening behaviour.","lang":"eng"}],"tmp":{"name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","image":"/images/cc_by_nc_nd.png","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)"},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_identifier":{"eissn":["2772-5693"]},"publication_status":"published","intvolume":"         3","corr_author":"1","_id":"18606","date_published":"2022-08-01T00:00:00Z","file":[{"relation":"main_file","date_updated":"2024-12-03T08:41:48Z","date_created":"2024-12-03T08:41:48Z","file_name":"2022_ScienceTalks_Clavaud.pdf","file_id":"18607","file_size":1128564,"access_level":"open_access","content_type":"application/pdf","creator":"dernst","success":1,"checksum":"379a5f0b2684cd5393a23be374591484"},{"file_id":"18646","file_name":"2024_ScienceTalk_Clavaud_Video.mp4","date_updated":"2024-12-11T09:22:13Z","relation":"main_file","date_created":"2024-12-11T09:22:13Z","file_size":93265727,"success":1,"creator":"dernst","access_level":"open_access","content_type":"video/mp4","checksum":"666c0bd9af8432437554d0c75c540809"},{"file_size":58282147,"file_name":"2024_ScienceTalk__Clavaud_QA.mp4","date_created":"2024-12-11T09:22:19Z","date_updated":"2024-12-11T09:22:19Z","relation":"supplementary_material","file_id":"18647","checksum":"8fd0d6224d7a0125fcf7d9ca0d80d700","creator":"dernst","content_type":"video/mp4","access_level":"open_access"}],"status":"public","article_processing_charge":"No","acknowledgement":"This talk presents parts of my PhD work, conducted at IUSTI in Marseille under the supervision of Yoël Forterre and Bloen Metzger. It aslo benefited from contributions from Antoine Bérut, and some of the data was acquired by Pauline Dame as part of a summer internship.\r\nThis work was supported by the European Research Council (ERC) under the European Union Horizon 2020 Research and Innovation program (ERC Grant 647384) and by the Labex MEC (ANR-10-LABX-0092) under the 647384) and by the A*MIDEX project (ANR-11-IDEX-0001-02) funded by the French government program Investissements d'Avenir, and by ANR ScienceFriction (No. ANR-18-CE30-0024).","oa":1,"publisher":"Elsevier","author":[{"orcid":"0000-0002-1843-3803","first_name":"Cécile","id":"5f654c5d-04a1-11eb-ab36-ba9ffec58bd8","last_name":"Clavaud","full_name":"Clavaud, Cécile"}],"day":"01","ddc":["530"],"doi":"10.1016/j.sctalk.2022.100038","scopus_import":"1","OA_type":"gold","has_accepted_license":"1","department":[{"_id":"ScWa"}],"language":[{"iso":"eng"}],"article_type":"original","file_date_updated":"2024-12-11T09:22:19Z","oa_version":"Published Version","volume":3,"article_number":"100038","date_updated":"2024-12-11T09:24:57Z","title":"Shear thickening in dense suspensions: an experimental study","license":"https://creativecommons.org/licenses/by-nc-nd/4.0/"}]