2025

Geometric measures of uniaxial solids of revolution in higher-dimensional Euclidean spaces and their relation to the second virial coefficient
Markus Kulossa, Joachim Wagner
arXiv:2404.15092 [cond-mat.stat-mech]  (preprint)
Phys. Rev. E 111, 024112 (2025)  

2024

Coupled dynamics in binary mixtures of model colloidal Yukawa systems
Daniel Weidig, Joachim Wagner
Soft Matter 20, 8897-8908 (2024)

Measurable structure factors of dense dispersions containing polydisperse, optically inhomogeneous particles
Joel Diaz Maier, Katharina Gaus, Joachim Wagner
J. Appl. Crystallogr. 57, 1503-1513 (2024)

Rescaled mode-coupling scheme for the quantitative description of experimentally observed colloid dynamics
Joel Diaz Maier, Joachim Wagner
Phys. Rev. E 109, 064605 (2024)

Structure and short-time diffusion of concentrated suspensions consisting of silicone-stabilised PMMA particles: a quantitative analysis taking polydispersity effects into account
Joel Diaz Maier, Joachim Wagner
Soft Matter 20, 1309-1319 (2024)

2023

Virial coefficients of hard, two-dimensional, convex particles up to the eighth order
Markus Kulossa, Joachim Wagner
Mol. Phys. 122, e2289699 (2023)

Virial coefficients of hard, homonuclear dumbbells in two- to four-dimensional Euclidean spaces
Markus Kulossa, Daniel Weidig, Joachim Wagner
Phys. Rev. E 107, 024129 (2023)

2022

Viscoelastic properties of pNIPAM-Hydrogels: A mode-coupling theory study
Joel Diaz Maier, Joachim Wagner
J. Chem. Phys. 157, 114901 (2022)

Equation of state of hard lenses: A combined virial series and simulation approach
Philipp Marienhagen, Joachim Wagner
Phys. Rev. E 106,  014101 (2022)

Virial coefficients of hard hyperspherocylinders in ℝ⁴: Influence of the aspect ratio
Markus Kulossa, Philipp Marienhagen, Joachim Wagner
Phys. Rev. E 105, 064121 (2022)

Reexamining equations of state of oblate hard ellipsoids of revolution: Numerical simulation utilizing a cluster Monte Carlo algorithm and comparison to virial theory
Philipp Marienhagen, Joachim Wagner
Phys. Rev. E 105, 014125 (2022)

2021

Calculation of third to eighth virial coefficients of hard lenses and hard, oblate ellipsoids of revolution employing an efficient algorithm
Philipp Marienhagen, Robert Hellmann, Joachim Wagner
Phys. Rev. E  104, 015308 (2021)

2018

Hindered nematic alignment of hematite spindles in poly-N-isopropylacrylamide hydrogels: A Small Angle X-ray Scattering and rheology study
Annemarie Nack, Julian Seifert, Christopher Passow, Joachim Wagner
J. Appl. Crystallogr. 51, 87-96 (2018)

2017

Virial coefficients of anisotropic hard solids of revolution: The detailed influence of the particle geometry
Elisabeth Herold, Robert Hellmann, Joachim Wagner (featured article und Titelseite)
J. Chem. Phys. 147, 204102 (2017)

A new class of copolymer colloids with tunable, low refractive index for investigations of structure and dynamics in concentrated suspensions
Falko Ziegert, Michael Koof, Joachim Wagner
Colloid Polym. Sci. 295, 1563-1574 (2017)

2015

Depolarized light scattering from prolate anisotropic particles: The influence of the particle shape on the field autocorrelation function
Christopher Passow, Borge ten Hagen, Hartmut Löwen, Joachim Wagner
J. Chem. Phys. 143, 044903 (2015)

2014

Direction-Dependent Freezing of Diamagnetic Colloidal Tracers Suspended in Paramagnetic Ionic Liquids
Christopher Passow, Birgit Fischer, Michael Sprung, Martin Köckerling, Joachim Wagner
Langmuir 30(25), 7283-7288 (2014)

2013

Direction Dependent Diffusion of Aligned Magnetic Rods by Means of X-Ray Photon Correlation Spectroscopy
Joachim Wagner, Christian Märkert, Birgit Fischer, Leonard Müller
Phys. Rev. Lett. 110, 048301 (2013)

2012

An analytical scattering function for polydisperse spherical core-shell particles with Schulz-Flory size distributions of both core size and shell thickness
Joachim Wagner
J. Appl. Crystallogr. 45, 513-516 (2012)

2011

Small-angle scattering from spindle-shaped colloidal hematite particles in external magnetic fields
Christian Märkert, Birgit Fischer, Joachim Wagner
J. Appl. Crystallogr. 44, 441-447 (2011)

2010

Highly Charged Inorganic-Organic Colloidal Core-Shell Particles
Birgit Fischer, Tina Autenrieth, Joachim Wagner
Langmuir 26(9), 6201-6205 (2010)

Structure and dynamics of glassy charged colloids studied with coherent small angle X-ray scattering
Birgit Fischer, Joachim Wagner, Christian Gutt, Fabian Westermeier, Gerhard Grübel
J. Phys.: Conf. Ser. 247, 012026 (2010)

2008

Dynamics in dense suspensions of charge-stabilized colloidal particles
Aymeric Robert, Joachim Wagner, Wolfram Härtl, Tina Autenrieth, Gerhard Grübel
Eur. Phys. J. E Soft Matter 25(1), 77-81 (2008)

2007

Functionalized polymer colloids bearing primary amino groups
Michael Schmitt, Joachim Wagner, Gregor Jung, Rolf Hempelmann
J. Colloid Interface Sci. 311(2), 425-429 (2007)

The dynamic behavior of magnetic colloids in suspension
Tina Autenrieth, Aymeric Robert, Joachim Wagner, Gerhard Grübel
J. Appl. Crystallogr. 40(Supplement), s250-s253 (2007)

2006

Structure and dynamics of charged magnetic colloids
Joachim Wagner, Birgit Fischer, Tina Autenrieth, Rolf Hempelmann
J. Phys.: Condens. Matter 18(38), S2697-S2711 (2006)

Dependence of Brownian Relaxation on the Volume Fraction and an External Field
Birgit Fischer, Joachim Wagner, Michael Schmitt, Vinh Trieu, Rolf Hempelmann
Zeitschrift für Physikalische Chemie 220(1), 69-77 (2006)

Field induced anisotropy of charged magnetic colloids: A rescaled mean spherical approximation study
Joachim Wagner, Birgit Fischer, Tina Autenrieth
J. Chem. Phys. 124, 114901 (2006)

2005

Structure and dynamics of electrostatically interacting magnetic nanoparticles in suspension
Aymeric Robert, Joachim Wagner, Tina Autenrieth, Wolfram Härtl, Gerhard Grübel
J. Chem. Phys. 122, 084701 (2005)

Tuning the relaxation behaviour by changing the content of cobalt in Co_xFe_3−xO₄ ferrofluids
Birgit Fischer, Joachim Wagner, Michael Schmitt, Rolf Hempelmann
J. Phys.: Condens. Matter 17, 7875 (2005)

Coherent X-rays as a new probe for the investigation of the dynamics of opaque colloidal suspensions
Aymeric Robert, Joachim Wagner, Tina Autenrieth, Wolfram Härtl, Gerhard Grübel
J. Magn. Magn. Mat. 289, 47-49 (2005)

Structure and dynamics of complex liquids with magnetic dipole–dipole interactions by means of static and dynamic X-ray scattering
Joachim Wagner, Tina Autenrieth, Aymeric Robert, Wolfram Härtl, Gerhard Grübel
J. Magn. Magn. Mat. 289, 54-57 (2005)

Deconvolution of X-ray diffraction profile by using the regularization technique
Vladyslav Piskarov, Joachim Wagner, Rolf Hempelmann
Acta Cryst. A61 Supplement: Abstracts of the XX IUCr Congress, Florence, Italy, August 2005, C163 (2005)

2004

Cobalt ferrite–silica core–shell colloids: a magnetic Yukawa system
Tina Autenrieth, Joachim Wagner, Rolf Hempelmann, Wolfram Härtl, Aymeric Robert, Gerhard Grübel
Appl. Organometal. Chem. 18(10), 520-522 (2004)

Self-diffusion of rodlike and spherical particles in a matrix of charged colloidal spheres: A comparison between fluorescence recovery after photobleaching and fluorescence correlation spectroscopy
Christoph Lellig, Joachim Wagner, Rolf Hempelmann, S. Keller, D. Lumma, Wolfram Härtl
J. Chem. Phys. 121(14), 7022-7029 (2004)

Small-angle scattering from spherical core-shell particles: an analytical scattering function for particles with Schulz-Flory size distribution
Joachim Wagner
J. Appl. Crystallogr. 37, 750-756 (2004)

2002

Core shell particles consisting of cobalt ferrite and silica as model ferrofluids [CoFe₂O₄–SiO₂ core shell particles]
Joachim Wagner, Tina Autenrieth, Rolf Hempelmann
J. Magn. Magn. Mat. 252, 4-6 (2002)

Immobilized Highly Charged Colloidal Crystals: A New Route to Three-Dimensional Mesoscale Structured Material
Christoph Lellig, Wolfram Härtl, Joachim Wagner, Rolf Hempelmann
Angewandte Chemie 114(1), 108-110 (2002)
Angewandte Chemie Int. Ed. 41(1), 102-104 (2002)

Complex liquids consisting of low-TG polymer-colloids: Structure and self-diffusion
Joachim Wagner, Wolfram Härtl, Christoph Lellig, Rolf Hempelmann, Harald Walderhaug
Journal of Molecular Liquids 98-99,2002, 183-190 (2002)

2001

Studies of the fractal microstructure of nanocrystalline and amorphous chromium obtained by electrodeposition
Radosław Przeniosło, Joachim Wagner, Harald Natter, Rolf Hempelmann, Werner Wagner
Journal of Alloys and Compounds 328(1-2), 259-263 (2001)

Long time self-diffusion in suspensions of highly charged colloids: A comparison between pulsed field gradient NMR and Brownian dynamics
Joachim Wagner, Wolfram Härtl, Harald Walderhaug
J. Chem. Phys. 114(2), 975 (2001)

2000

Characterization of Monodisperse Colloidal Particles:  Comparison between SAXS and DLS
Joachim Wagner, Wolfram Härtl, Rolf Hempelmann
Langmuir 16(9), 4080-4085 (2000)

Self-diffusion and hydrodynamic interactions in highly charged colloids
Wolfram Härtl, Joachim Wagner, Christian Beck, Frank Gierschner, Rolf Hempelmann
J. Phys.: Condens. Matter 12, A287-A293 (2000)

1998

Characterization of Nanoscale Titanium Nitride Dispersions by Small-Angle Neutron Scattering
Joachim Wagner, Stefan Janβen, Roman Rupp, Roland May, Rolf Hempelmann
Journal of the American Ceramic Society 81(12), 3313-3317 (1998)

1997

Small angle neutron scattering experiments on nanostructured matter using contrast variation
Stefan Janßen, Joachim Wagner, Harald Natter, J. Prewo, Roman Rupp, Jörg Löffler, Helmut Eckerlebe, Roland Peter May, Gerhard Meier, Rolf Hempelmann
Nanostructured Materials 9, 327-330 (1997)

Growth kinetics of nanocrystalline CuTi by means of time-resolved SAXS
Joachim Wagner, Stefan Janßen, Michael Hirscher, Peter Boesecke, Rolf Hempelmann
Berichte der Bunsengesellschaft für physikalische Chemie 101(11), 1738-1741 (1997)