Institutions of the University of Bayreuth
Chair Physical Chemistry II - Interfaces and Nanoanalytics - Univ.-Prof. Dr. Georg Papastavrou

Raßmann, Nadine ; Trippmacher, Steffen ; Specht, Agnes ; Theis, Katinka ; Rößler, Tamino ; Wohlrab, Sebastian ; Kellnberger, Richard ; Salehi, Sahar ; Bargel, Hendrik ; Helfricht, Nicolas ; Albrecht, Krystyna ; Scheibel, Thomas ; Groll, Jürgen ; Gekle, Stephan ; Papastavrou, Georg:
Determining the Elastic Modulus of Microgel Particles by Nanoindentation.
In: ACS Applied Nano Materials. Vol. 8 (2025) Issue 11 . - pp. 5383-5398.
DOI: https://doi.org/10.1021/acsanm.4c06964

Engelhardt, Matthias B. ; Markus, Paul ; Helfricht, Nicolas ; Papastavrou, Georg:
Effective charge of high-generation PAMAM dendrimers in the adsorbed state.
In: Journal of Colloid and Interface Science. Vol. 686 (2025) . - pp. 852-863.
DOI: https://doi.org/10.1016/j.jcis.2025.02.008

Specht, Agnes ; Krämer, Dominik ; Helfricht, Nicolas ; Papastavrou, Georg:
How Much Data Are Enough? Toward Statistically Robust Adhesion Experiments by Atomic Force Microscopy.
In: Langmuir. Vol. 41 (2025) Issue 10 . - pp. 6515-6527.
DOI: https://doi.org/10.1021/acs.langmuir.4c03519

Karg, Andreas:
Characterizing and Manipulating by Local Electrochemical Techniques.
Bayreuth , 2024 . - VII, 151 p.
( Doctoral thesis, 2023 , Universität Bayreuth, Fakultät für Biologie, Chemie und Geowissenschaften)
DOI: https://doi.org/10.15495/EPub_UBT_00007401

Berger, Alexander ; Theis, Maximilian ; von Wedel, Henrike ; Rößler, Tamino ; Papastavrou, Georg ; Senker, Jürgen ; Retsch, Markus:
A versatile method for facile and reliable synthesis of colloidal particles with a size and composition gradient.
In: Colloid and Polymer Science. (8 July 2024) .
DOI: https://doi.org/10.1007/s00396-024-05282-7

Sittl, Sebastian ; Helfricht, Nicolas ; Papastavrou, Georg:
Contactless calibration of microchanneled AFM cantilevers for fluidic force microscopy.
In: VIEW : Illuminating Wellness. Vol. 5 (2024) Issue 1 . - 20230063.
DOI: https://doi.org/10.1002/VIW.20230063

Gödrich, Sebastian ; Brodoceanu, Daniel ; Kuznetsov, Volodymyr ; Kraus, Tobias ; Papastavrou, Georg:
Defined Transfer of Colloidal Particles by Electrochemical Microcontact Printing.
In: Advanced Materials Interfaces. Vol. 11 (2024) Issue 22 . - 2400202.
DOI: https://doi.org/10.1002/admi.202400202

Sittl, Sebastian ; Das, Mohan ; Helfricht, Nicolas ; Petekidis, George ; Papastavrou, Georg:
Direct Force Measurements between Sub-Micron Rod-Shaped Colloids by AFM.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects. Vol. 697 (2024) . - 134319.
DOI: https://doi.org/10.1016/j.colsurfa.2024.134319

Engelhardt, Matthias B. ; Sugimoto, Takuya ; Papastavrou, Georg ; Kobayashi, Motoyoshi:
Electrophoretic Mobility of Nanoparticle Aggregates : Independence from Aggregate Size.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects. Vol. 703, Part 1 (2024) . - 135244.
DOI: https://doi.org/10.1016/j.colsurfa.2024.135244

Tran, Bettina ; Watts, Samuel ; Valentin, Jules D. P. ; Raßmann, Nadine ; Papastavrou, Georg ; Ramstedt, Madeleine ; Salentinig, Stefan:
pH-Responsive Virus-Based Colloidal Crystals for Advanced Material Platforms.
In: Advanced Functional Materials. (2024) . - 2402257.
DOI: https://doi.org/10.1002/adfm.202402257

Keller, Thorsten ; Trinks, Nora ; Brand, Jessica ; Trippmacher, Steffen ; Stahlhut, Philipp ; Albrecht, Krystina ; Papastavrou, Georg ; Koepsell, Hermann ; Sauer, Markus ; Groll, Jürgen:
Design of Nanohydrogels for Targeted Intracellular Drug Transport to the Trans-Golgi Network.
In: Advanced Healthcare Materials. Vol. 12 (2023) Issue 13 . - 2201794.
DOI: https://doi.org/10.1002/adhm.202201794

Karg, Andreas ; Kuznetsov, Volodymyr ; Helfricht, Nicolas ; Lippitz, Markus ; Papastavrou, Georg:
Electrochemical grippers based on the tuning of surface forces for applications in micro- and nanorobotics.
In: Scientific Reports. Vol. 13 (2023) . - 7885.
DOI: https://doi.org/10.1038/s41598-023-33654-6

Raßmann, Nadine ; Weber, Melina ; Glaß, Roman E. J. ; Kreger, Klaus ; Helfricht, Nicolas ; Schmidt, Hans-Werner ; Papastavrou, Georg:
Electrogelation: Controlled Fast Formation of Micrometer-Thick Films from Low-Molecular Weight Hydrogelators.
In: Langmuir. Vol. 39 (2023) Issue 48 . - pp. 17190-17200.
DOI: https://doi.org/10.1021/acs.langmuir.3c02270

Biberger, Simon ; Leupold, Nico ; Witt, Christina ; Greve, Christopher ; Markus, Paul ; Ramming, Philipp ; Lukas, Daniel ; Schötz, Konstantin ; Kahle, Frank-Julian ; Zhu, Chenhui ; Papastavrou, Georg ; Köhler, Anna ; Herzig, Eva M. ; Moos, Ralf ; Panzer, Fabian:
First of Their Kind : Solar Cells with a Dry-Processed Perovskite Absorber Layer via Powder Aerosol Deposition and Hot-Pressing.
In: Solar RRL. Vol. 7 (2023) Issue 16 . - 2300261.
DOI: https://doi.org/10.1002/solr.202300261

Karg, Andreas ; Gödrich, Sebastian ; Dennstedt, Philipp ; Helfricht, Nicolas ; Retsch, Markus ; Papastavrou, Georg:
An Integrated, Exchangeable Three-Electrode Electrochemical Setup for AFM-Based Scanning Electrochemical Microscopy.
In: Sensors. Vol. 23 (2023) Issue 11 . - 5228.
DOI: https://doi.org/10.3390/s23115228

Ruiz Madroñero, Christhy V. ; Terlinden, Markus ; Engelhardt, Matthias ; Magnabosco, Giulia ; Papastavrou, Georg ; Vogel, Nicolas ; Thommes, Matthias ; Bachmann, Julien:
Preparation and Surface Functionalization of a Tunable Porous System Featuring Stacked Spheres in Cylindrical Pores.
In: Advanced Materials Interfaces. Vol. 10 (2023) Issue 33 . - 2300436.
DOI: https://doi.org/10.1002/admi.202300436

Hofer, André ; Taccardi, Nicola ; Moritz, Michael ; Wichmann, Christoph ; Hübner, Sabine ; Drobek, Dominik ; Engelhardt, Matthias ; Papastavrou, Georg ; Spiecker, Erdmann ; Papp, Christian ; Wasserscheid, Peter ; Bachmann, Julien:
Preparation of geometrically highly controlled Ga particle arrays on quasi-planar nanostructured surfaces as a SCALMS model system.
In: RSC Advances. Vol. 13 (2023) Issue 6 . - pp. 4011-4018.
DOI: https://doi.org/10.1039/d2ra07585g

Schnupfhagn, Christoph ; Schumacher, Thorsten ; Markus, Paul ; Papastavrou, Georg ; Aftenieva, Olha ; König, Tobias A. F. ; Dudko, Volodymyr ; Matejdes, Marian ; Breu, Josef ; Lippitz, Markus:
Disentangling the Orientations of Spectrally Overlapping Transition Dipoles in Dense Dye Layers.
In: Nano Letters. Vol. 22 (2022) Issue 18 . - pp. 7499-7505.
DOI: https://doi.org/10.1021/acs.nanolett.2c02438

Schmidtmann, Johanna ; Elagami, Hassan ; Gilfedder, Benjamin Silas ; Fleckenstein, Jan ; Papastavrou, Georg ; Mansfeld, Ulrich ; Peiffer, Stefan:
Heteroaggregation of PS microplastic with ferrihydrite leads to rapid removal of microplastic particles from the water column.
In: Environmental Science : Processes & Impacts. Vol. 24 (2022) Issue 10 . - pp. 1782-1789.
DOI: https://doi.org/10.1039/D2EM00207H

Gödrich, Sebastian ; Schmidt, Hans-Werner ; Papastavrou, Georg:
Stability of Charge Distributions in Electret Films on the nm-Scale.
In: ACS Applied Materials & Interfaces. Vol. 14 (2022) Issue 3 . - pp. 4500-4509.
DOI: https://doi.org/10.1021/acsami.1c21174

Michels-Brito, Paulo H. ; Dudko, Volodymyr ; Wagner, Daniel ; Markus, Paul ; Papastavrou, Georg ; Michels, Leander ; Breu, Josef ; Fossum, Jon Otto:
Bright, noniridescent structural coloration from clay mineral nanosheet suspensions.
In: Science Advances. Vol. 8 (2022) Issue 4 . - eabl8147.
DOI: https://doi.org/10.1126/sciadv.abl8147

Khoruzhenko, Olena ; Wagner, Daniel R. ; Mangelsen, Sebastian ; Dulle, Martin ; Förster, Stephan ; Rosenfeldt, Sabine ; Dudko, Volodymyr ; Ottermann, Katharina ; Papastavrou, Georg ; Bensch, Wolfgang ; Breu, Josef:
Colloidally stable, magnetoresponsive liquid crystals based on clay nanosheets.
In: Journal of Materials Chemistry C. Vol. 9 (2021) Issue 37 . - pp. 12732-12740.
DOI: https://doi.org/10.1039/D1TC02927D

Menzel, Teresa ; Weigert, Sebastian ; Gagsteiger, Andreas ; Eich, Yannik ; Sittl, Sebastian ; Papastavrou, Georg ; Ruckdäschel, Holger ; Altstädt, Volker ; Höcker, Birte:
Impact of Enzymatic Degradation on the Material Properties of Poly(Ethylene Terephthalate).
In: Polymers. Vol. 13 (2021) Issue 22 . - 3885.
DOI: https://doi.org/10.3390/polym13223885

Dudko, Volodymyr ; Ottermann, Katharina ; Rosenfeldt, Sabine ; Papastavrou, Georg ; Breu, Josef:
Osmotic Delamination : A Forceless Alternative for the Production of Nanosheets Now in Highly Polar and Aprotic Solvents.
In: Langmuir. Vol. 37 (2021) Issue 1 . - pp. 461-468.
DOI: https://doi.org/10.1021/acs.langmuir.0c03113

Lu, Taotao ; Gilfedder, Benjamin Silas ; Peng, Hao ; Peiffer, Stefan ; Papastavrou, Georg ; Ottermann, Katharina ; Frei, Sven:
Relevance of Iron Oxyhydroxide and Pore Water Chemistry on the Mobility of Nanoplastic Particles in Water-Saturated Porous Media Environments.
In: Water, Air, & Soil Pollution. Vol. 232 (2021) . - 168.
DOI: https://doi.org/10.1007/s11270-021-05125-z

Karg, Andreas ; Rößler, Tamino ; Mark, Andreas ; Markus, Paul ; Lauster, Tobias ; Helfricht, Nicolas ; Papastavrou, Georg:
A Versatile and Simple Approach to Electrochemical Colloidal Probes for Direct Force Measurements.
In: Langmuir. Vol. 37 (2021) Issue 46 . - pp. 13537-13547.
DOI: https://doi.org/10.1021/acs.langmuir.1c01557

Markus, Paul ; Martínez-Tong, Daniel E. ; Papastavrou, Georg ; Algeria, Angel:
Effect of environmental humidity on the ionic transport of poly(ethylene oxide) thin films, investigated by local dielectric spectroscopy.
In: Soft Matter. Vol. 16 (2020) Issue 13 . - pp. 3203-3208.
DOI: https://doi.org/10.1039/C9SM02471A

Humenik, Martin ; Preiß, Tamara ; Gödrich, Sebastian ; Papastavrou, Georg ; Scheibel, Thomas:
Functionalized DNA-spider silk nanohydrogels for controlled protein binding and release.
In: Materials Today Bio. Vol. 6 (2020) . - 100045.
DOI: https://doi.org/10.1016/j.mtbio.2020.100045

Mark, Andreas:
New Techniques for Interface Characterization by Combining Scanning Probe Microscopy with Electrochemistry and Nanofluidics.
Bayreuth , 2020 . - X, 225 p.
( Doctoral thesis, 2020 , Universität Bayreuth, Bayreuther Graduiertenschule für Mathematik und Naturwissenschaften - BayNAT)
DOI: https://doi.org/10.15495/EPub_UBT_00005119

Kuznetsov, Volodymyr ; Ottermann, Katharina ; Helfricht, Nicolas ; Kunz, Daniel ; Loch, Patrick ; Kalo, Hussein ; Breu, Josef ; Papastavrou, Georg:
Surface charge density and diffuse layer properties of highly defined 2:1 layered silicate platelets.
In: Colloid and Polymer Science. Vol. 298 (2020) . - pp. 907-920.
DOI: https://doi.org/10.1007/s00396-020-04673-w

Glatz, Bernhard A.:
Surface wrinkling of elastic supported membranes : Controlling defects and upscaling.
Bayreuth , 2020 . - VII, 191 p.
( Doctoral thesis, 2019 , Universität Bayreuth, Fakultät für Biologie, Chemie und Geowissenschaften)
DOI: https://doi.org/10.15495/EPub_UBT_00004607

Mark, Andreas ; Helfricht, Nicolas ; Rauh, Astrid ; Xue, Jinqiao ; Knödler, Patrick ; Schumacher, Thorsten ; Karg, Matthias ; Du, Binyang ; Lippitz, Markus ; Papastavrou, Georg:
Electrokinetics in Micro-channeled Cantilevers : Extending the Toolbox for Reversible Colloidal Probes and AFM-Based Nanofluidics.
In: Scientific Reports. Vol. 9 (2019) . - 20294.
DOI: https://doi.org/10.1038/s41598-019-56716-0

Mark, Andreas ; Helfricht, Nicolas ; Rauh, Astrid ; Karg, Matthias ; Papastavrou, Georg:
The Next Generation of Colloidal Probes : A Universal Approach for Soft and Ultra‐Small Particles.
In: Small. Vol. 15 (2019) Issue 43 . - 1902976.
DOI: https://doi.org/10.1002/smll.201902976

Reichstein, Paul M. ; Gödrich, Sebastian ; Papastavrou, Georg ; Thelakkat, Mukundan:
Influence of Composition of Amphiphilic Double-Crystalline P3HT- b-PEG Block Copolymers on Structure Formation in Aqueous Solution.
In: Macromolecules. Vol. 49 (2016) Issue 15 . - pp. 5484-5493.
DOI: https://doi.org/10.1021/acs.macromol.6b01305