Zobrazeno 1 - 10
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pro vyhledávání: '"Hilgenfeldt"'
Manipulation of small-scale particles across streamlines is the elementary task of microfluidic devices. Many such devices operate at very low Reynolds numbers and deflect particles using arrays of obstacles, but a systematic quantification of releva
Externí odkaz:
http://arxiv.org/abs/2409.08452
Here we derive and experimentally test a free energy functional that captures the adhesion of DNA-coated emulsion droplets. Generalizing previous approaches, the theory combines important energetic and entropic effects of microscopic DNA mechanics an
Externí odkaz:
http://arxiv.org/abs/2406.08618
Autor:
Kim, Sangwoo, Hilgenfeldt, Sascha
Understanding the way disordered particle packings transition between jammed (rigid) and unjammed (fluid) states is of both great practical importance and strong fundamental interest. The values of critical packing fraction (and other state variables
Externí odkaz:
http://arxiv.org/abs/2402.08390
Oscillatory flows have become an indispensable tool in microfluidics, inducing inertial effects for displacing and manipulating fluid-borne objects in a reliable, controllable, and label-free fashion. However, the quantitative description of such eff
Externí odkaz:
http://arxiv.org/abs/2308.04423
Just like atoms combine into molecules, colloids can self-organize into predetermined structures according to a set of design principles. Controlling valence -- the number of inter-particle bonds -- is a prerequisite for the assembly of complex archi
Externí odkaz:
http://arxiv.org/abs/2109.01171
The energetically optimal position of lattice defects on intrinsically curved surfaces is a complex function of shape parameters. For open surfaces, a simple condition predicts the critical size for which a central disclination yields lower energy th
Externí odkaz:
http://arxiv.org/abs/2102.07311
Describing effects of small but finite inertia on suspended particles is a fundamental fluid dynamical problem that has never been solved in full generality. Modern microfluidics has turned this academic problem into a practical challenge through the
Externí odkaz:
http://arxiv.org/abs/2101.03322
Autor:
Volk, Andreas, Rossi, Massimiliano, Rallabandi, Bhargav, Kaehler, Christian J., Hilgenfeldt, Sascha, Marin, Alvaro
Publikováno v:
Phys. Rev. Fluids 5, 114201 (2020)
Acoustically actuated sessile bubbles can be used as a tool to manipulate microparticles, vesicles and cells. In this work, using acoustically actuated sessile semi-cylindrical microbubbles, we demonstrate experimentally that finite-sized micropartic
Externí odkaz:
http://arxiv.org/abs/2009.12811
Publikováno v:
Phys. Rev. Lett. 125, 078003 (2020)
Determining the positions of lattice defects on elastic surfaces with Gaussian curvature is a non-trivial task of mechanical energy optimization, particularly for surfaces with boundaries. We introduce a simple way to predict the onset of disclinatio
Externí odkaz:
http://arxiv.org/abs/2003.07826
Publikováno v:
Phys. Rev. Applied 12, 054010 (2019)
Trapping and manipulation of small particles underlies many scientific and technological applications. Recently, the precise manipulation of multiple small particles was demonstrated using a Stokes trap that relies only on fluid flow without the need
Externí odkaz:
http://arxiv.org/abs/1908.01651