Zobrazeno 1 - 10
of 260
pro vyhledávání: '"de Graaf, Joost"'
Autor:
Torre, Kim William, de Graaf, Joost
Colloidal gels have strong industrial relevance as they can behave liquid- and solid-like. The latter allows them to support the buoyant weight against gravity. However, the system is intrinsically out-of-equilibrium, which means that the colloids mu
Externí odkaz:
http://arxiv.org/abs/2405.16317
Autor:
Nemati, Hossein, de Graaf, Joost
The Cellular Potts model, also known as Glazier-Graner-Hogeweg model, is a lattice-based approach, by which biological tissues at the level of individual cells can be numerically studied. Traditionally, a square or hexagonal underlying lattice struct
Externí odkaz:
http://arxiv.org/abs/2404.09055
Autor:
Torre, Kim William, de Graaf, Joost
Colloidal gels are elasto-plastic materials composed of an out-of-equilibrium, self-assembled network of micron-sized (solid) particles suspended in a fluid. Recent work has shown that far-field hydrodynamic interactions do not change gel structure,
Externí odkaz:
http://arxiv.org/abs/2306.11716
Attractive colloids diffuse and aggregate to form gels, solid-like particle networks suspended in a fluid. Gravity is known to strongly impact the stability of gels once they are formed. However, its effect on the process of gel formation has seldom
Externí odkaz:
http://arxiv.org/abs/2303.13908
Autor:
Torre, Kim William, de Graaf, Joost
Locally (re)structuring colloidal gels $\unicode{x2013}$ micron-sized particles forming a connected network with arrested dynamics $\unicode{x2013}$ enables precise tuning of the micromechanical and -rheological properties of the system. A recent exp
Externí odkaz:
http://arxiv.org/abs/2211.02509
Autor:
Demirörs, Ahmet F., Aykut, Sümeyye, Ganzeboom, Sophia, Meier, Yuki, Hardeman, Robert, de Graaf, Joost, Mathijssen, Arnold J. T. M., Poloni, Erik, Carpenter, Julia A., Unlu, Caner, Zenhausern, Daniel
One of the major challenges in modern robotics is controlling micromanipulation by active and adaptive materials. In the respiratory system, such actuation enables pathogen clearance by means of motile cilia. While various types of artificial cilia h
Externí odkaz:
http://arxiv.org/abs/2108.09835
Publikováno v:
Soft Matter, 2020, 16, 10707-10715
Unrestricted particle transport through microfluidic channels is of paramount importance to a wide range of applications, including lab-on-a-chip devices. In this article, we study using video microscopy the electro-osmotic aggregation of colloidal p
Externí odkaz:
http://arxiv.org/abs/2104.00040
Publikováno v:
Nature Communications 13, 1772 (2022)
Cooperative motion in biological microswimmers is crucial for their survival as it facilitates adhesion to surfaces, formation of hierarchical colonies, efficient motion, and enhanced access to nutrients. Synthetic microswimmers currently lack truly
Externí odkaz:
http://arxiv.org/abs/2103.07335
Publikováno v:
Phys. Rev. Lett. 125, 258002 (2020)
Recent experiments show a strong rotational-diffusion enhancement for self-propelled microrheological probes in colloidal glasses. Here, we provide microscopic understanding using simulations with a frictional probe-medium coupling that converts acti
Externí odkaz:
http://arxiv.org/abs/2012.10654
Publikováno v:
Phys. Rev. E 102, 062608 (2020)
Geometric confinement strongly influences the behavior of microparticles in liquid environments. However, to date, nonspherical particle behaviors close to confining boundaries, even as simple as planar walls, remain largely unexplored. Here, we meas
Externí odkaz:
http://arxiv.org/abs/2009.14733