@article{21273,
  abstract     = {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.},
  author       = {Dombret, Albert and Sutter, Adrien and Coquinot, Baptiste and Kavokine, Nikita and Coasne, Benoit and Bocquet, Lydéric},
  issn         = {2469-990X},
  journal      = {Physical Review Fluids},
  number       = {1},
  publisher    = {American Physical Society},
  title        = {{Hydrodynamic permeability of fluctuating porous membranes}},
  doi          = {10.1103/m8h6-1wfk},
  volume       = {11},
  year         = {2026},
}

@article{21840,
  abstract     = {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.},
  author       = {Coquinot, Baptiste and Lizée, Mathieu and Bocquet, Lydéric and Kavokine, Nikita},
  issn         = {1089-7690},
  journal      = {The Journal of Chemical Physics},
  number       = {13},
  publisher    = {AIP Publishing},
  title        = {{Electron–electrolyte coupling in AC transport through nanofluidic channels}},
  doi          = {10.1063/5.0313352},
  volume       = {164},
  year         = {2026},
}

@article{22145,
  abstract     = {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.},
  author       = {Shchukin, Konstantin P. and Gallego Lacey, Oliver N. and Coquinot, Baptiste and Jakowski, Jacek and Huang, Jingsong and Staudenmayer, Patrik and Falke, Yannic and Pandeya, Ram Prakash and Grüneis, Alexander},
  issn         = {1936-086X},
  journal      = {ACS Nano},
  keywords     = {fulleride, intercalation, alkali metal, superconductivity, Raman},
  number       = {24},
  pages        = {17360--17372},
  publisher    = {American Chemical Society},
  title        = {{On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation}},
  doi          = {10.1021/acsnano.6c02466},
  volume       = {20},
  year         = {2026},
}