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Experiments were performed to test the effect of an electric field on growing E-coli cultures. Cell growing dishes were fitted with platinum wires to create a potential drop across the dish. Water diluted E-coli cultures were brushed across…

Biological Physics · Physics 2017-09-11 Eshel Faraggi

We have measured quantum transport through an individual Fe$_4$ single-molecule magnet embedded in a three-terminal device geometry. The characteristic zero-field splittings of adjacent charge states and their magnetic field evolution are…

The paper investigates the increase in the natural magnetically controlled properties of probiotic microorganisms Lactobacillus rhamnosus GG (LGG) and their ability to form magnetic sensitive inclusions (MsI). The magnetic susceptibility of…

Biological Physics · Physics 2022-04-21 Svitlana Gorobets , Oksana Gorobets , Liubov Kuzminykh

Cells have the ability to detect electric fields and respond to them with directed migratory movement. Investigations identified genes and proteins that play important roles in defining the migration efficiency. Nevertheless, the sensing…

Cell Behavior · Quantitative Biology 2020-10-01 Isabella Guido , Douglas Diehl , Nora Aleida Olszok , Eberhard Bodenschatz

We present magnetoresistance (MR) measurements performed on quench condensed granular Ni thin films which are on the verge of electric continuity. In these systems the electric conductivity is believed to be governed by the resistance…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 A. Cohen , A. Frydman , R. Berkovits

Highly concentrated active agents tend to exhibit turbulent flows, reminiscent of classical hydrodynamic turbulence, which has attracted considerable attention lately. Controlling the so-called active turbulence has long been a challenge,…

Soft Condensed Matter · Physics 2023-07-13 Kazusa Beppu , Jaakko V. I. Timonen

The study of long-term evolution of neutron star (NS) magnetic fields is key to understanding the rich diversity of NS observations, and to unifying their nature despite the different emission mechanisms and observed properties. Such…

Solar and Stellar Astrophysics · Physics 2016-01-27 J. G. Elfritz , J. A. Pons , N. Rea , K. Glampedakis , D. Viganò

We report on a new technique which was used to detect single Escherichia coli that is based on the changes in the nonlinear rotation of a magnetic microsphere driven by an external magnetic field. The presence of one Escherichia Coli…

Biological Physics · Physics 2007-05-23 Brandon H. McNaughton , Rodney R. Agayan , Raoul Kopelman

Inspired by emergent behaviors of living matter, there is increasing interest in developing approaches to create dynamic patterns and structures in synthetic materials with controllable complexity to enable functionalities that are not…

Soft Condensed Matter · Physics 2024-02-01 Fereshteh Sohrabi , Carlo Rigoni , Tomy Cherian , Olli Ikkala , Jaakko V. I. Timonen

Elucidating the architecture and dynamics of large scale genetic regulatory networks of cells is an important goal in systems biology. We study the system level dynamical properties of the genetic network of Escherichia coli that regulates…

Molecular Networks · Quantitative Biology 2008-02-29 Areejit Samal , Sanjay Jain

Externally controlled motion of micro and nanomotors in a fluid environment constitutes a promising tool in biosensing, targeted delivery and environmental remediation. In particular, recent experiments have demonstrated that fuel-free…

Fluid Dynamics · Physics 2017-02-08 Maria Michiko Alcanzare , Mikko Karttunen , Tapio Ala-Nissila

We predict ultrafast switching in a chiral anti-ferromagnet that occurs at femtosecond times, nearly 5 orders of magnitude faster than the torque induced nanosecond switching previously observed. The physical mechanism, quite different from…

\textit{Magnetospirillum gryphiswaldense} biosynthesize high quality magnetite nanoparticles, called magnetosomes, and arrange them into a chain that behaves like a magnetic compass. Here we perform magnetometry and polarized small-angle…

A study of the induced effect of different types of weak magnetic field exposure on bacterial growth is performed, comparing the relative changes after removal from the magnetic fields. This investigation is relevant to understand the…

Biological Physics · Physics 2019-12-03 Samina Masood , Iram Saleem , Derek Smith , Wei-Kan Chu

The emergence of biomolecular homochirality requires both an initial symmetry-breaking event and a mechanism to amplify and preserve a chiral imbalance. Magnetic minerals have been shown to function as chiral agents through the…

Extended solids that combine unpaired electron spin and structural chirality can host unconventional magnetic behaviors with potential for electronic technologies. A versatile strategy for creating chiral solids is incorporation of chiral…

Based on the molecular dynamics (MD) simulation and the classical Euler-Bernoulli beam theory, a fundamental study of the vibrational performance of the Ag nanowire (NW) is carried out. A comprehensive analysis of the quality (Q)-factor,…

Mesoscale and Nanoscale Physics · Physics 2012-09-17 Haifei Zhan , Yuantong Gu

We report observation of a "non-volatile" converse magneto-electric effect in elliptical FeGa nanomagnets delineated on a piezoelectric PMN-PT substrate. The nanomagnets are initially magnetized with a magnetic field directed along their…

Mesoscale and Nanoscale Physics · Physics 2015-09-29 Hasnain Ahmad , Jayasimha Atulasimha , Supriyo Bandyopadhyay

The rotary motor of bacteria is a natural nano-technological marvel that enables cell locomotion by powering the rotation of semi-rigid helical flagellar filaments in fluid environments. It is well known that the motor operates essentially…

Biological Physics · Physics 2018-10-23 Debasish Das , Eric Lauga

Under normal conditions in a neutron-star crust, ions are locked in place in the crustal lattice and only electrons are mobile, and magnetic-field evolution is thus directly related to the electron velocity. The evolution, however, builds…

High Energy Astrophysical Phenomena · Physics 2019-06-17 S. K. Lander , K. N. Gourgouliatos
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