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The transfer of mechanical signals through cells is a complex phenomenon. To uncover a new mechanotransduction pathway, we study the frequency-dependent transport of mechanical stimuli by single microtubules and small networks in a…

Biological Physics · Physics 2017-05-03 M. D. Koch , N. Schneider , P. Nick , A. Rohrbach

The physical pre-treatment of seeds is a growing field of research in agricultural biotechnology. Among its possibilities, magnetopriming of seeds has received increasing attention in the last two decades. Inspired by remarkable reports of…

Biological Physics · Physics 2023-03-02 Lucas M. Ferroni , Moira I. Dolz , María Florencia Guerra , Leonardo Makinistian

Magnetic flux rope, formed by the helical magnetic field lines, can sometimes remain its shape while carrying significant plasma flow that is aligned with the local magnetic field. We report the existence of such structures and static flux…

Solar and Stellar Astrophysics · Physics 2021-06-30 Yu Chen , Qiang Hu , Lingling Zhao , Justin C. Kasper , Jia Huang

Single cell and regularly cells docking inside the microstructure of microfluidic systems are advantageous in different analyses of single cells exposed to equal drug concentration and mechanical stimulus. In this study, we investigated…

Biological Physics · Physics 2020-08-05 Sina Ahandoust , Maryam Saadatmand

An ultra-high magnetic field was generated by the electro-magnetic flux compression technique under a reduced seed magnetic field condition and achieved maximum magnetic field intensity was investigated. An ordinal pickup coil measurement…

Instrumentation and Detectors · Physics 2018-03-14 Daisuke Nakamura , Hironobu Sawabe , Shojiro Takeyama

We controlled and observed individual magnetotactic bacteria (Magnetospirillum gryphiswaldense) inside a 5 {\mu}m high microfluidic channel for over four hours. After a period of constant velocity, the duration of which varied between…

Using a highly viscous magnetic fluid, the dynamics in the aftermath of the Rosensweig instability can be slowed down by more than 2000 times. In this way we expand the regime where the growth rate is predicted to scale linearly with the…

Pattern Formation and Solitons · Physics 2016-04-13 Adrian Lange , Christian Gollwitzer , Robin Maretzki , Ingo Rehberg , Reinhard Richter

We investigate the growth of a pattern of liquid crests emerging in a layer of magnetic liquid when subjected to a magnetic field oriented normally to the fluid surface. After a steplike increase of the magnetic field, the temporal…

Pattern Formation and Solitons · Physics 2008-01-03 Holger Knieling , Reinhard Richter , Ingo Rehberg , Gunar Matthies , Adrian Lange

We present unique {and additional} observational evidence for the self-generation of small-scale coherent magnetic flux rope structures in the solar wind. Such structures with durations between 9 and 361 minutes are identified from Wind…

Space Physics · Physics 2018-01-08 Jinlei Zheng , Qiang Hu

A detailed understanding of island seeding is crucial to avoid (N)TMs and their negative consequences like confinement degradation and disruptions. In the present work, we investigate the growth of 2/1 islands in response to magnetic…

We apply a Fourier spectral numerical method to 3D incompressible MHD turbulence with a magnetic Prandtl number $Pr \geq 1$. We examine the processes by which an initially weak, large-scale seed magnetic field and an initially weak,…

Astrophysics · Physics 2009-10-31 Hongsong Chou

We propose a coarse-grained theoretical model to capture the aging of microfluidic devices under different conditions including constant applied flow rate and constant applied pressure gradient. Microfluidic devices that sort cells by their…

Soft Condensed Matter · Physics 2022-05-19 Gess Kelly , Thomas G. Fai

We develop a theoretical description of the spin dynamics of resident holes in a p-doped semiconductor quantum well (QW) subject to a magnetic field tilted from the Voigt geometry. We find the expressions for the signals measured in…

Mesoscale and Nanoscale Physics · Physics 2013-10-10 K. Korzekwa , C. Gradl , M. Kugler , S. Furthmeier , M. Griesbeck , M. Hirmer , D. Schuh , W. Wegscheider , T. Kuhn , C. Schüller , T. Korn , P. Machnikowski

We present numerical simulations of driven magnetohydrodynamic (MHD) turbulence with weak/moderate imposed magnetic fields. The main goal is to clarify dynamics of magnetic field growth. We also investigate the effects of the imposed…

Astrophysics · Physics 2011-02-11 J. Cho , E. Vishniac , A. Beresnyak , A. Lazarian , D. Ryu

To describe the dynamics of a single peak of the Rosensweig instability a model is proposed which approximates the peak by a half-ellipsoid atop a layer of magnetic fluid. The resulting nonlinear equation for the height of the peak leads to…

patt-sol · Physics 2009-10-31 Adrian Lange , Heinz Langer , Andreas Engel

We develop a mother machine-like microfluidic device specifically designed to track the proliferation of T-cells via live-cell microscopy. Although numerous microfluidic setups have been developed to study cell proliferation at the…

Cell Behavior · Quantitative Biology 2025-09-09 Simone Scalise , Giovanna Peruzzi , Davide Caprini , Giorgio Gosti , Giancarlo Ruocco , Mattia Miotto

Cosmic structure formation is characterized by the complex interplay between gravity, turbulence, and magnetic fields. The processes by which gravitational energy is converted into turbulent and magnetic energies, however, remain poorly…

Solar and Stellar Astrophysics · Physics 2011-03-29 Christoph Federrath , Sharanya Sur , Dominik R. G. Schleicher , Robi Banerjee , Ralf S. Klessen

In the framework of turbulence dynamo, flow motions amplify a weak seed magnetic field through the stretching of field lines. Although the amplification process has been a topic of active research, less attention has been paid to the length…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Jungyeon Cho , Dongsu Ryu

The dependence of the maximal growth rate of the modes of the Rosensweig instability on the properties of the magnetic fluid and the external magnetic induction is studied. An expansion and a fit procedure are applied in the appropriate…

Pattern Formation and Solitons · Physics 2009-11-07 Adrian Lange

Despite numerous advances in the field of tissue engineering and regenerative medicine, monitoring the formation of tissue regeneration and its metabolic variations during culture is still a challenge and mostly limited to bulk volumetric…

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