Operando Analysis of the Pre-OER Activation of Metal-Doped Co<sub>3</sub>O<sub>4</sub> Nanoparticle Catalysts
L. Kampermann, J. Klein, T. Wagner, A. Kotova, C. Placke-Yan, A. Yasar, L. Jacobse, S. Lasagna, C. Leppin, S. Schulz, J. Linnemann, A. Bergmann, B. Roldan Cuenya, G. Bacher, ACS Catalysis 15 (2025) 18391–18403.

Role of defects in reversible surface restructuring and activity of Co<sub>3</sub>O<sub>4</sub> oxygen evolution electrocatalysts
C.H. Scharf, A. Chandraraj, K. Dyk, F. Stebner, S. Lepin, J. Tian, L. El Bergmi Byaz, J. Stettner, C. Leppin, A. Kotova, S. Reinke, J. Linnemann, F. Maroun, O.M. Magnussen, (2025).

The FrequencyDomain Lattice Boltzmann Method (FreqDLBM): A Versatile Tool to Predict the QCM Response Induced by Structured Samples
D. Johannsmann, P. Häusner, A. Langhoff, C. Leppin, I. Reviakine, V. Vanoppen, Advanced Theory and Simulations 8 (2025).

Comparing the SEI Formation on Copper and Amorphous Carbon: A Study with Combined Operando Methods
M. Stich, C. Leppin, F.T. Krauss, J.E. Valdes Landa, I. Pantenburg, B. Roling, A. Bund, Batteries 11 (2025).

Rapid Solidification of Plant Latices from Campanula glomerata Driven by a Sudden Decrease in Hydrostatic Pressure
A. Langhoff, A. Peschel, C. Leppin, S. Kruppert, T. Speck, D. Johannsmann, Plants 14 (2025).

Swelling Degree of Polyelectrolyte Layers Determined by an Electrochemical Quartz Crystal Microbalance
C. Leppin, A. Pomorska, M. Morga, P. Pomastowski, P. Fijakowski, A. Michna, D. Johannsmann, Biomacromolecules 26 (2025) 914–928.

A fast electrochemical quartz crystal microbalance (EQCM) evidences the presence of nanobubbles in alkaline water splitting
C. Leppin, A. Langhoff, D. Johannsmann, Physical Chemistry Chemical Physics 27 (2025) 19733–19747.

An electrochemical quartz crystal microbalance (EQCM) based on microelectrode arrays allows to distinguish between adsorption and electrodeposition
M. Biermann, C. Leppin, A. Langhoff, T. Ziemer, C. Rembe, D. Johannsmann, The Analyst 149 (2024) 2138–2146.

Protein–protein interactions in solutions of monoclonal antibodies probed by the dependence of the high-frequency viscosity on temperature and concentration
E. Rott, C. Leppin, T. Diederichs, P. Garidel, D. Johannsmann, The Analyst 148 (2023) 1887–1897.

Stiffness of Contacts between Adsorbed Particles and the Surface of a QCMD Inferred from the Adsorption Kinetics and a FrequencyDomain Lattice Boltzmann Simulation
D. Johannsmann, C. Leppin, A. Langhoff, Advanced Theory and Simulations 6 (2023).

Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model
D. Johannsmann, A. Langhoff, C. Leppin, I. Reviakine, A.M.C. Maan, Sensors 23 (2023).

Particle fouling at hot reactor walls monitored In situ with a QCM-D and modeled with the frequency-domain lattice Boltzmann method
D. Johannsmann, J. Petri, C. Leppin, A. Langhoff, H. Ibrahim, Results in Physics 45 (2023).

Influence of the solvent evaporation rate on the ;2-Phase content of electrosprayed PVDF particles and films studied by a fast Multi-Overtone QCM
J. Wiegmann, C. Leppin, A. Langhoff, J. Schwaderer, S. Beuermann, D. Johannsmann, A.P. Weber, Advanced Powder Technology 33 (2022).

Square-Wave Electrogravimetry Combined with Voltammetry Reveals Reversible Submonolayer Adsorption of Redox-Active Ions
C. Leppin, A. Langhoff, D. Johannsmann, Analytical Chemistry 94 (2022) 10227–10233.

Studying Soft Interfaces with Shear Waves: Principles and Applications of the Quartz Crystal Microbalance (QCM)
D. Johannsmann, A. Langhoff, C. Leppin, Sensors 21 (2021).

A Modulation QCM Applied to Copper Electrodeposition and Stripping
C. Leppin, A. Langhoff, O. Höfft, D. Johannsmann, Electroanalysis 33 (2021) 2529–2538.

Fast and slow EQCM response of zwitterionic weak electrolytes to changes in the electrode potential: a pH-mediated mechanism
C. Leppin, A. Langhoff, H.-F. Poggemann, A.S. Gödde, D. Johannsmann, The Analyst 146 (2021) 6005–6013.

Kinetics of viscoelasticity in the electric double layer following steps in the electrode potential studied by a fast electrochemical quartz crystal microbalance (EQCM)
C. Leppin, A. Peschel, F.S. Meyer, A. Langhoff, D. Johannsmann, The Analyst 146 (2021) 2160–2171.

A Quartz Crystal Microbalance, Which Tracks Four Overtones in Parallel with a Time Resolution of 10 Milliseconds: Application to Inkjet Printing
C. Leppin, S. Hampel, F.S. Meyer, A. Langhoff, U.E.A. Fittschen, D. Johannsmann, Sensors 20 (2020).

Fast <i>p</i>H-mediated changes of the viscosity of protein solutions studied with a voltage-modulated quartz crystal microbalance
A. Gödde, C. Leppin, F.S. Meyer, A. Langhoff, J. Hartl, P. Garidel, D. Johannsmann, Biointerphases 15 (2020).