[{"arxiv":1,"abstract":[{"text":"In this paper we examine how porosity fluctuations affect the hydrodynamic permeability of a porous matrix or membrane. We introduce a fluctuating Darcy model, which couples the Navier-Stokes equation to the space- and time-dependent porosity fluctuations via a Darcy friction term. Using a perturbative approach, a Dyson equation for hydrodynamic fluctuations is derived and solved to express the permeability in terms of the matrix fluctuation spectrum. Surprisingly, the model reveals strong modifications of the fluid permeability in fluctuating matrices compared to static ones. Applications to various matrix excitation models, the breathing matrix, phonons, and active forcing, highlight the significant influence of matrix fluctuations on fluid transport, offering insights for optimizing membrane design for separation applications.","lang":"eng"}],"title":"Hydrodynamic permeability of fluctuating porous membranes","article_processing_charge":"No","date_published":"2026-01-21T00:00:00Z","date_updated":"2026-02-23T12:01:57Z","day":"21","oa_version":"Preprint","publication_status":"published","publication":"Physical Review Fluids","status":"public","type":"journal_article","external_id":{"arxiv":["2512.11368"]},"month":"01","quality_controlled":"1","intvolume":"        11","OA_place":"repository","publication_identifier":{"eissn":["2469-990X"]},"publisher":"American Physical Society","oa":1,"volume":11,"article_type":"original","citation":{"apa":"Dombret, A., Sutter, A., Coquinot, B., Kavokine, N., Coasne, B., &#38; Bocquet, L. (2026). Hydrodynamic permeability of fluctuating porous membranes. <i>Physical Review Fluids</i>. American Physical Society. <a href=\"https://doi.org/10.1103/m8h6-1wfk\">https://doi.org/10.1103/m8h6-1wfk</a>","ama":"Dombret A, Sutter A, Coquinot B, Kavokine N, Coasne B, Bocquet L. Hydrodynamic permeability of fluctuating porous membranes. <i>Physical Review Fluids</i>. 2026;11(1). doi:<a href=\"https://doi.org/10.1103/m8h6-1wfk\">10.1103/m8h6-1wfk</a>","mla":"Dombret, Albert, et al. “Hydrodynamic Permeability of Fluctuating Porous Membranes.” <i>Physical Review Fluids</i>, vol. 11, no. 1, 014201, American Physical Society, 2026, doi:<a href=\"https://doi.org/10.1103/m8h6-1wfk\">10.1103/m8h6-1wfk</a>.","short":"A. Dombret, A. Sutter, B. Coquinot, N. Kavokine, B. Coasne, L. Bocquet, Physical Review Fluids 11 (2026).","ieee":"A. Dombret, A. Sutter, B. Coquinot, N. Kavokine, B. Coasne, and L. Bocquet, “Hydrodynamic permeability of fluctuating porous membranes,” <i>Physical Review Fluids</i>, vol. 11, no. 1. American Physical Society, 2026.","chicago":"Dombret, Albert, Adrien Sutter, Baptiste Coquinot, Nikita Kavokine, Benoit Coasne, and Lydéric Bocquet. “Hydrodynamic Permeability of Fluctuating Porous Membranes.” <i>Physical Review Fluids</i>. American Physical Society, 2026. <a href=\"https://doi.org/10.1103/m8h6-1wfk\">https://doi.org/10.1103/m8h6-1wfk</a>.","ista":"Dombret A, Sutter A, Coquinot B, Kavokine N, Coasne B, Bocquet L. 2026. Hydrodynamic permeability of fluctuating porous membranes. Physical Review Fluids. 11(1), 014201."},"language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2512.11368","open_access":"1"}],"corr_author":"1","OA_type":"green","year":"2026","article_number":"014201","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"MiLe"}],"date_created":"2026-02-17T08:10:09Z","author":[{"first_name":"Albert","full_name":"Dombret, Albert","last_name":"Dombret"},{"first_name":"Adrien","last_name":"Sutter","full_name":"Sutter, Adrien"},{"first_name":"Baptiste","orcid":"0000-0001-5524-596X","id":"f8417bd4-f599-11ee-a482-b927e3ed1e8e","last_name":"Coquinot","full_name":"Coquinot, Baptiste"},{"last_name":"Kavokine","full_name":"Kavokine, Nikita","first_name":"Nikita"},{"first_name":"Benoit","full_name":"Coasne, Benoit","last_name":"Coasne"},{"last_name":"Bocquet","full_name":"Bocquet, Lydéric","first_name":"Lydéric"}],"doi":"10.1103/m8h6-1wfk","_id":"21273","acknowledgement":"The authors acknowledge support from ERC project n-AQUA, Grant Agreement No. 101071937.\r\nB.C. and A.S. acknowledge support from the CFM Foundation. B.C. acknowledges support from\r\nthe NOMIS Foundation.","issue":"1"},{"department":[{"_id":"MiLe"}],"date_created":"2026-05-07T08:53:03Z","author":[{"id":"f8417bd4-f599-11ee-a482-b927e3ed1e8e","last_name":"Coquinot","full_name":"Coquinot, Baptiste","first_name":"Baptiste","orcid":"0000-0001-5524-596X"},{"first_name":"Mathieu","last_name":"Lizée","full_name":"Lizée, Mathieu"},{"last_name":"Bocquet","full_name":"Bocquet, Lydéric","first_name":"Lydéric"},{"last_name":"Kavokine","full_name":"Kavokine, Nikita","first_name":"Nikita"}],"PlanS_conform":"1","has_accepted_license":"1","doi":"10.1063/5.0313352","_id":"21840","scopus_import":"1","acknowledgement":"The authors thank Nicolas Chapuis for fruitful discussions. L.B. acknowledges support from the ERC project n-AQUA under Grant Agreement No. 101071937. B.C. acknowledges support from the CFM Foundation and the NOMIS Foundation. N.K. acknowledges support from the Swiss National Science Foundation (SNSF) under Grant No. CRSK-2_237930.","issue":"13","language":[{"iso":"eng"}],"file_date_updated":"2026-05-18T07:31:23Z","OA_type":"hybrid","year":"2026","article_number":"134704","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","license":"https://creativecommons.org/licenses/by/4.0/","type":"journal_article","month":"04","external_id":{"arxiv":["2505.02478"]},"quality_controlled":"1","intvolume":"       164","OA_place":"publisher","publication_identifier":{"issn":["0021-9606"],"eissn":["1089-7690"]},"volume":164,"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"oa":1,"publisher":"AIP Publishing","article_type":"original","file":[{"success":1,"relation":"main_file","date_updated":"2026-05-18T07:31:23Z","file_size":5497515,"access_level":"open_access","file_id":"21889","file_name":"2026_JourChemPhysics_Coquinot.pdf","checksum":"a896969c829be2a79859bd277f87b44c","content_type":"application/pdf","date_created":"2026-05-18T07:31:23Z","creator":"dernst"}],"citation":{"ama":"Coquinot B, Lizée M, Bocquet L, Kavokine N. Electron–electrolyte coupling in AC transport through nanofluidic channels. <i>The Journal of Chemical Physics</i>. 2026;164(13). doi:<a href=\"https://doi.org/10.1063/5.0313352\">10.1063/5.0313352</a>","apa":"Coquinot, B., Lizée, M., Bocquet, L., &#38; Kavokine, N. (2026). Electron–electrolyte coupling in AC transport through nanofluidic channels. <i>The Journal of Chemical Physics</i>. AIP Publishing. <a href=\"https://doi.org/10.1063/5.0313352\">https://doi.org/10.1063/5.0313352</a>","ieee":"B. Coquinot, M. Lizée, L. Bocquet, and N. Kavokine, “Electron–electrolyte coupling in AC transport through nanofluidic channels,” <i>The Journal of Chemical Physics</i>, vol. 164, no. 13. AIP Publishing, 2026.","ista":"Coquinot B, Lizée M, Bocquet L, Kavokine N. 2026. Electron–electrolyte coupling in AC transport through nanofluidic channels. The Journal of Chemical Physics. 164(13), 134704.","chicago":"Coquinot, Baptiste, Mathieu Lizée, Lydéric Bocquet, and Nikita Kavokine. “Electron–Electrolyte Coupling in AC Transport through Nanofluidic Channels.” <i>The Journal of Chemical Physics</i>. AIP Publishing, 2026. <a href=\"https://doi.org/10.1063/5.0313352\">https://doi.org/10.1063/5.0313352</a>.","mla":"Coquinot, Baptiste, et al. “Electron–Electrolyte Coupling in AC Transport through Nanofluidic Channels.” <i>The Journal of Chemical Physics</i>, vol. 164, no. 13, 134704, AIP Publishing, 2026, doi:<a href=\"https://doi.org/10.1063/5.0313352\">10.1063/5.0313352</a>.","short":"B. Coquinot, M. Lizée, L. Bocquet, N. Kavokine, The Journal of Chemical Physics 164 (2026)."},"arxiv":1,"abstract":[{"lang":"eng","text":"The transport properties of nanofluidic channels are usually studied under constant (DC) voltage or pressure driving. However, the frequency response under sinusoidal (AC) drivings offers rich insights into the time-dependent transport mechanisms. Inspired by recent electrochemical approaches, we investigate the couplings between ionic and electronic transport under AC driving. We show that conduction electrons of the channel walls participate in ionic current via capacitive electrochemical coupling, defining a critical frequency and length scale where electron-dominated conductivity emerges. We further analyze how electron–ion coupling modifies electro-osmotic flows and demonstrate that fluctuation-induced momentum transfer between the electrolyte and wall electrons produces distinct AC transport signatures, depending on the charge carrier polarity. Altogether, we establish a frequency-dependent transport matrix that couples ionic, electronic, and hydrodynamic flows. These findings establish AC nanofluidic transport as a powerful probe of interfacial phenomena under confinement and suggest new directions for engineering nanofluidic functionalities through electron–electrolyte coupling."}],"ddc":["530"],"title":"Electron–electrolyte coupling in AC transport through nanofluidic channels","article_processing_charge":"Yes (in subscription journal)","date_published":"2026-04-07T00:00:00Z","date_updated":"2026-05-18T07:34:57Z","day":"07","oa_version":"Published Version","publication_status":"published","status":"public","publication":"The Journal of Chemical Physics"},{"month":"06","external_id":{"pmid":["42260723"]},"type":"journal_article","page":"17360-17372","quality_controlled":"1","intvolume":"        20","OA_place":"publisher","publication_identifier":{"eissn":["1936-086X"],"issn":["1936-0851"]},"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"oa":1,"volume":20,"publisher":"American Chemical Society","article_type":"original","file":[{"checksum":"01ec8ee6fab7bf563df7af13f6b43045","file_name":"2026_ACSNano_Shchukin.pdf","file_id":"22150","creator":"dernst","content_type":"application/pdf","date_created":"2026-06-29T08:58:12Z","relation":"main_file","success":1,"file_size":6290296,"access_level":"open_access","date_updated":"2026-06-29T08:58:12Z"}],"pmid":1,"citation":{"ama":"Shchukin KP, Gallego Lacey ON, Coquinot B, et al. On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation. <i>ACS Nano</i>. 2026;20(24):17360-17372. doi:<a href=\"https://doi.org/10.1021/acsnano.6c02466\">10.1021/acsnano.6c02466</a>","apa":"Shchukin, K. P., Gallego Lacey, O. N., Coquinot, B., Jakowski, J., Huang, J., Staudenmayer, P., … Grüneis, A. (2026). On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation. <i>ACS Nano</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/acsnano.6c02466\">https://doi.org/10.1021/acsnano.6c02466</a>","ieee":"K. P. Shchukin <i>et al.</i>, “On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation,” <i>ACS Nano</i>, vol. 20, no. 24. American Chemical Society, pp. 17360–17372, 2026.","ista":"Shchukin KP, Gallego Lacey ON, Coquinot B, Jakowski J, Huang J, Staudenmayer P, Falke Y, Pandeya RP, Grüneis A. 2026. On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation. ACS Nano. 20(24), 17360–17372.","chicago":"Shchukin, Konstantin P., Oliver N. Gallego Lacey, Baptiste Coquinot, Jacek Jakowski, Jingsong Huang, Patrik Staudenmayer, Yannic Falke, Ram Prakash Pandeya, and Alexander Grüneis. “On-Chip Tuning of Superconductivity in Fullerides via Current-Driven Rb+ Intercalation.” <i>ACS Nano</i>. American Chemical Society, 2026. <a href=\"https://doi.org/10.1021/acsnano.6c02466\">https://doi.org/10.1021/acsnano.6c02466</a>.","mla":"Shchukin, Konstantin P., et al. “On-Chip Tuning of Superconductivity in Fullerides via Current-Driven Rb+ Intercalation.” <i>ACS Nano</i>, vol. 20, no. 24, American Chemical Society, 2026, pp. 17360–72, doi:<a href=\"https://doi.org/10.1021/acsnano.6c02466\">10.1021/acsnano.6c02466</a>.","short":"K.P. Shchukin, O.N. Gallego Lacey, B. Coquinot, J. Jakowski, J. Huang, P. Staudenmayer, Y. Falke, R.P. Pandeya, A. Grüneis, ACS Nano 20 (2026) 17360–17372."},"abstract":[{"lang":"eng","text":"An in-operando electro-intercalation method for the on-chip synthesis of alkali-metal-intercalated materials and their Raman spectroscopic and transport characterization in ultrahigh vacuum (UHV) is developed. We apply this method to synthesize fulleride superconductors via Rb+ intercalation into a C60 film. During the intercalation, we monitor the stoichiometry via UHV-Raman spectroscopy and probe superconductivity via transport measurements. An increase of the superconducting transition temperature from 7.0 K to 14.5 K is observed when the stoichiometry is tuned from Rb2.7C60 to Rb3C60. In our experiment, an ionic Rb+ flux into the host material is induced by an applied electronic current via a Butler–Volmer-type mechanism. Electro-intercalation captivates through improved stoichiometric precision, the ability to smoothly vary stoichiometry via duration of current application, and the absence of a lower limit of the volume of the host material. It represents a powerful concept for the on-chip synthesis of intercalated materials, battery research, and beyond."}],"researchdata_availability":"no","ddc":["530"],"title":"On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation","date_published":"2026-06-23T00:00:00Z","article_processing_charge":"Yes (via OA deal)","date_updated":"2026-06-29T09:00:33Z","day":"23","oa_version":"Published Version","status":"public","publication_status":"published","publication":"ACS Nano","department":[{"_id":"MiLe"}],"date_created":"2026-06-28T22:01:34Z","author":[{"full_name":"Shchukin, Konstantin P.","last_name":"Shchukin","first_name":"Konstantin P."},{"first_name":"Oliver N.","full_name":"Gallego Lacey, Oliver N.","last_name":"Gallego Lacey"},{"full_name":"Coquinot, Baptiste","id":"f8417bd4-f599-11ee-a482-b927e3ed1e8e","last_name":"Coquinot","orcid":"0000-0001-5524-596X","first_name":"Baptiste"},{"full_name":"Jakowski, Jacek","last_name":"Jakowski","first_name":"Jacek"},{"first_name":"Jingsong","full_name":"Huang, Jingsong","last_name":"Huang"},{"first_name":"Patrik","last_name":"Staudenmayer","full_name":"Staudenmayer, Patrik"},{"full_name":"Falke, Yannic","last_name":"Falke","first_name":"Yannic"},{"full_name":"Pandeya, Ram Prakash","last_name":"Pandeya","first_name":"Ram Prakash"},{"first_name":"Alexander","full_name":"Grüneis, Alexander","last_name":"Grüneis"}],"supplementarymaterial":"yes","PlanS_conform":"1","doi":"10.1021/acsnano.6c02466","has_accepted_license":"1","_id":"22145","scopus_import":"1","acknowledgement":"A.G. and K.P.S. acknowledge the DFG through CRC 1238 (277146847, A01) and DFG project SE 2575. K.P.S., P.S., and A.G. would like to thank the Center for Micro- and Nanostructures (ZMNS) for providing the cleanroom facilities. K.P.S. thanks Daniele Nazari for help with ALD of Al2O3 films. Financial support from FFG Austria (CrystalGate) is acknowledged. A.G. thanks John Weaver for discussions about the structure of RbxC60. B.C. acknowledges support from the NOMIS Foundation. First-principles simulations were supported as part of user project CNMS2025-R-03182 at the Center for Nanophase Materials Sciences (CNMS), which is a US Department of Energy, Office of Science User Facility at Oak Ridge National Laboratory. J.J. and J.H. acknowledge the computational resources provided by the ACCESS (Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support) program through allocation TG-DMR110037; the National Energy Research Scientific Computing Center (NERSC), a DOE Office of Science User Facility supported under Contract No. DE-AC02-05CH11231, through NERSC award BES-ERCAP0031261; and the Compute and Data Environment for Science (CADES) Baseline at Oak Ridge National Laboratory, supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. The authors acknowledge TU Wien Bibliothek for financial support through its Open access funding provided by Technische Universitat Wien.","issue":"24","language":[{"iso":"eng"}],"file_date_updated":"2026-06-29T08:58:12Z","OA_type":"hybrid","das_tickbox":"0","year":"2026","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","keyword":["fulleride","intercalation","alkali metal","superconductivity","Raman"]}]