Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Marconi, V. I."'
Autor:
Carrillo-Mora, Juan Pablo, Monteiro, Moniellen Pires, Lodeiro, Aníbal R., Marconi, V. I., Cordero, María Luisa
The outermost structure of the bacterial flagellar motor is a long helicoidal filament, whose protein building blocks are produced and injected from the base, progressively elongating the filament and regenerating it in case it breaks. Here, we study
Externí odkaz:
http://arxiv.org/abs/2410.10932
Publikováno v:
Phys. Fluids 34, 037102 (2022)
Artificial microswimmers, nano and microrobots, are essential in many applications from engineering to biology and medicine. We present a Stokesian Dynamics study of the dynamical properties and efficiency of one of the simplest artificial swimmer, t
Externí odkaz:
http://arxiv.org/abs/2112.15239
Autor:
Guidobaldi, H. A., Jeyaram, Y., Condat, C. A., Oviedo, M., Berdakin, I., Moshchalkov, V. V., Giojalas, L. C., Silhanek, A. V., Marconi, V. I.
Publikováno v:
Biomicrofluidics 9, 024122 (2015)
Many self-propelled microorganisms are attracted to surfaces. This makes their dynamics in restricted geometries very different from that observed in the bulk. Swimming along walls is beneficial for directing and sorting cells, but may be detrimental
Externí odkaz:
http://arxiv.org/abs/1501.01508
Autor:
Guidobaldi, A., Jeyaram, Y., Berdakin, I., Moshchalkov, V. V., Condat, C. A., Marconi, V. I., Giojalas, L., Silhanek, A. V.
The guidance of human sperm cells under confinement in quasi 2D microchambers is investigated using a purely physical method to control their distribution. Transport property measurements and simulations are performed with dilute sperm populations, f
Externí odkaz:
http://arxiv.org/abs/1401.2551
Quantifying the sorting efficiency of self-propelled run-and-tumble swimmers by geometrical ratchets
Suitable asymmetric microstructures can be used to control the direction of motion in microorganism populations. This rectification process makes it possible to accumulate swimmers in a region of space or to sort different swimmers. Here we study num
Externí odkaz:
http://arxiv.org/abs/1305.5434
Autor:
Berdakin, I., Jeyaram, Y., Moshchalkov, V. V., Venken, L., Dierckx, S., Vanderleyden, S. J., Silhanek, A. V., Condat, C. A., Marconi, V. I.
Publikováno v:
Phys. Rev. E 87, 052702 (2013)
It has been shown that a nanoliter chamber separated by a wall of asymmetric obstacles can lead to an inhomogeneous distribution of self-propelled microorganisms. Although it is well established that this rectification effect arises from the interact
Externí odkaz:
http://arxiv.org/abs/1305.5428
Publikováno v:
Physica C: Superconductivity. Volume 471, Issue 13-14, p. 432-436, 2011
We study thermal fluctuations and capacitive effects on small Josephson Junction Rings (JJR) that mimics the rectification phenomena recently observed in triangle shaped mesoscopic superconductors, due to the superposition of the field induced persis
Externí odkaz:
http://arxiv.org/abs/1101.0159
Autor:
Marconi, V. I., Kolton, A. B., Capitan, J. A., Cuesta, J. A., Perez-Junquera, A., Velez, M., Martin, J. I., Parrondo, J. M. R.
Publikováno v:
Phys. Rev. B 83, 214403 (2011)
The motion of a domain wall in a two dimensional medium is studied taking into account the internal elastic degrees of freedom of the wall and geometrical pinning produced both by holes and sample boundaries. This study is used to analyze the geometr
Externí odkaz:
http://arxiv.org/abs/1012.5471
Autor:
Schildermans, N., Kolton, A. B., Salenbien, R., Marconi, V. I., Silhanek, A. V., Moshchalkov, V. V.
Publikováno v:
N. Schildermans, A. B. Kolton, R. Salenbien, V. I. Marconi, A. V. Silhanek, V. V. Moshchalkov, Phys. Rev. B 76, 224501 (2007)
The interaction of externally applied currents with persistent currents induced by magnetic field in a mesoscopic triangle is investigated. As a consequence of the superposition of these currents, clear voltage rectification effects are observed. We
Externí odkaz:
http://arxiv.org/abs/0712.0575
Autor:
Perez-Junquera, A., Marconi, V. I., Kolton, A. B., Alvarez-Prado, L. M., Souche, Y., Alija, A., Velez, M., Anguita, J. V., Alameda, J. M., Martin, J. I., Parrondo, J. M. R.
Publikováno v:
Physical Review Letters 100 (2008) 037203
We study both experimentally and theoretically the driven motion of domain walls in extended amorphous magnetic films patterned with a periodic array of asymmetric holes. We find two crossed ratchet effects of opposite sign that change the preferred
Externí odkaz:
http://arxiv.org/abs/0709.0189