79 citations · 742 across the 27 of their papers we have counts for
27 papers
U-Net based particle localization in granular experiments: Accuracy limits and optimization
Fahad Puthalath, Matthias Schröter, Nicoletta Sanvitale +2
Identifying the positions of granular particles from experimental images is often complicated by their partial overlap in two dimensional projections. Uneven backgrounds and inhomo…
Distribution and dynamics of decimeter-sized dust agglomerates in the coma of 67P/Churyumov-Gerasimenko
P. Lemos, J. Agarwal, M. Schröter
We present a method to analyze images of the coma of 67P/Churyumov-Gerasimenko obtained using OSIRIS, the main imaging system onboard \textit{Rosetta}, where dust aggregates can be…
On the trail of a comet's tail: A particle tracking algorithm for comet 67P/Churyumov-Gerasimenko
Marius Pfeifer, Jessica Agarwal, Matthias Schröter
Context. During the post-perihelion phase of the European Space Agency's Rosetta mission to comet 67P, the Optical, Spectroscopic, and Infrared Remote Imaging System on board the s…
Symmetric wetting heterogeneity suppresses fluid displacement hysteresis in granular piles
Robabeh Moosavi, Matthias Schröter, Stephan Herminghaus
We investigate experimentally the impact of heterogeneity on the capillary pressure hysteresis in fluid invasion of model porous media. We focus on `symmetric' heterogeneity, where…
Nucleation in sheared granular matter
Frank Rietz, Charles Radin, Harry L. Swinney +1
We present an experiment on crystallization of packings of macroscopic granular spheres. This system is often considered to be a model for thermally driven atomic or colloidal syst…
Focus on Imaging Methods in Granular Physics
Axelle Amon, Philip Born, Karen E. Daniels +6
Granular materials are complex multi-particle ensembles in which macroscopic properties are largely determined by inter-particle interactions between their numerous constituents. I…
A local view on the role of friction and shape
Matthias Schröter
Leibniz said "Naturam cognosci per analogiam": nature is understood by making analogies. This statement describes a seminal epistemological principle. But one has to be aware of it…
Analyzing X-Ray tomographies of granular packings
Simon Weis, Matthias Schröter
Starting from three-dimensional volume data of a granular packing, as e.g. obtained by X-ray Computed Tomography, we discuss methods to first detect the individual particles in the…
Influence of humidity on the tribo-electric charging and segregation in shaken granular media
André Schella, Stephan Herminghaus, Matthias Schröter
We study the effect of humidity on the charge accumulation of polymer granulates shaken vertically in a stainless steel container. The setup allows to control the humidity level fr…
A cohesive granular material with tunable elasticity
Arnaud Hemmerle, Matthias Schröter, Lucas Goehring
By mixing glass beads with a curable polymer we create a well-defined cohesive granular medium, held together by solidified, and hence elastic, capillary bridges. This material has…
High refractive index immersion liquid for super-resolution 3D imaging using sapphire-based aNAIL optics
Junaid M. Laskar, P. Shravan Kumar, Stephan Herminghaus +2
Optically-transparent immersion liquids with refractive index (n ~ 1.77) to match sapphire-based aplanatic numerical aperture increasing lens (aNAIL) are necessary for achieving de…
Non-universal Voronoi cell shapes in amorphous ellipsoid packings
Fabian M. Schaller, Sebastian C. Kapfer, James E. Hilton +8
In particulate systems with short-range interactions, such as granular matter or simple fluids, local structure plays a pivotal role in determining the macroscopic physical propert…
Local analysis of the history dependence in tetrahedra packings
N. Nirmal Thyagu, Max Neudecker, Simon Weis +2
The mechanical properties of a granular sample depend frequently on the way the packing was prepared. However, is not well understood which properties of the packing store this inf…
The mechanism of long-term coarsening of granular mixtures in rotating drums
Tilo Finger, Matthias Schröter, Ralf Stannarius
Three fundamental segregation and pattern formation processes are known in granular mixtures in a rotating cylindrical drum: radial segregation, axial banding, and coarsening of th…
Local origin of global contact numbers in frictional ellipsoid packings
Fabian M. Schaller, Max Neudecker, Mohammad Saadatfar +3
In particulate soft matter systems the average number of contacts of a particle is an important predictor of the mechanical properties of the system. Using X-ray tomography, we…
Wetting heterogeneity in mixed-wet porous media controls flow dissipation
Julie Murison, Benoît Semin, Jean-Christophe Baret +3
Pressure controlled displacement of an oil/water interface is studied in dense packings of functionalized glass beads with well-defined spatial wettability correlations. An enhance…
Measuring the configurational temperature of a binary disc packing
Song-Chuan Zhao, Matthias Schröter
Jammed packings of granular materials differ from systems normally described by statistical mechanics in that they are athermal. In recent years a statistical mechanics of static g…
Granular transport in a horizontally vibrated sawtooth channel
Shahin Mobarakabadi, Ehsan Nedaaee Oskoee, Matthias Schröter +1
We present a new mode of transport of spherical particles in a horizontally vibrated channel with sawtooth shaped side walls. The underlying driving mechanism is based on an interp…
Performance of Polarization-based Stereoscopy Screens
Xiaozhu Zhang, Kristian Hantke, Cornelius Fischer +1
The screen is a key part of stereoscopic display systems using polarization to separate the different channels for each eye. The system crosstalk, characterizing the imperfection o…
Jammed frictional tetrahedra are hyperstatic
Max Neudecker, Stephan Ulrich, Stephan Herminghaus +1
We prepare packings of frictional tetrahedra with volume fractions ϕ ranging from 0.469 to 0.622 using three different experimental protocols under isobaric conditions. Analysis vi…
Correlation between Voronoi volumes in disc packings
Song-Chuan Zhao, Stacy Sidle, Harry L. Swinney +1
We measure the two-point correlation of free Voronoi volumes in binary disc packings, where the packing fraction ranges from 0.8175 to 0.8380. We observe short-ranged…
Tailoring the frictional properties of granular media
Sonia Utermann, Philipp Aurin, Markus Benderoth +2
A method of modifying the roughness of soda-lime glass spheres is presented, with the purpose of tuning inter-particle friction. The effect of chemical etching on the surface topog…
Shearing of frictional sphere packings
Jean-François Métayer, Donald J. Suntrup, Charles Radin +2
We measure shear response in packings of glass beads by pulling a thin, rough, metal plate vertically through a bed of volume fraction phi, which is set, before the plate is pulled…
Sound speed in water-saturated glass beads as a function of frequency and porosity
Theodore F. Argo, Matthew D. Guild, Preston S. Wilson +3
Sound propagation in water-saturated granular sediments is known to depend on the sediment porosity, but few data in the literature address both the frequency and porosity dependen…