Zobrazeno 1 - 10
of 247
pro vyhledávání: '"Würger, Alois"'
Autor:
Matus, Marcela Rodriguez, Zhang, Zaicheng, Benrahla, Zouhir, Majee, Arghya, Maali, Abdelhamid, Würger, Alois
Theoretically and experimentally, we study electroviscous phenomena resulting from charge-flow coupling in a nanoscale capillary. Our theoretical approach relies on Poisson-Boltzmann mean-field theory and on coupled linear relations for charge and hy
Externí odkaz:
http://arxiv.org/abs/2201.01022
Publikováno v:
Journal of Energy Chemistry (2021)
The tremendous amount of wasted heat from solar radiation and industry dissipation has motivated the development of thermoelectric concepts that directly convert heat into electricity. The main challenge in practical applications for thermoelectrics
Externí odkaz:
http://arxiv.org/abs/2103.04959
Autor:
Würger, Alois
Publikováno v:
Phys. Rev. Lett. 126, 068001 (2021)
We show that the huge Seebeck coefficients observed recently for ionic conductors, arise from a ratchet effect where activated jumps between neighbor sites are rectified by a temperature gradient, thus driving mobile ions towards the cold. For comple
Externí odkaz:
http://arxiv.org/abs/2010.12207
Autor:
Würger, Alois
Publikováno v:
Phys. Rev. Research 2, 042030 (2020)
We theoretically study the thermoelectric response of ionic conductors to an applied temperaturegradient. As a main result we find that open and closed systems with respect to charge exchange,result in different expressions for the thermopower which
Externí odkaz:
http://arxiv.org/abs/2010.12209
Active particles break out of thermodynamic equilibrium thanks to their directed motion, which leads to complex and interesting behaviors in the presence of confining potentials. When dealing with active nanoparticles, however, the overwhelming prese
Externí odkaz:
http://arxiv.org/abs/2009.08393
Autor:
Zhang, Zaicheng, Wang, Yuliang, Amarouchene, Yacine, Boisgard, Rodolphe, Kellay, Hamid, Würger, Alois, Maali, Abdelhamid
Publikováno v:
Phys. Rev. Lett. 126, 174503 (2021)
We report measurements of resonant thermal capillary oscillations of a hemispherical liquid gas interface obtained using a half bubble deposited on a solid substrate. The thermal motion of the hemispherical interface is investigated using an atomic f
Externí odkaz:
http://arxiv.org/abs/2009.03637
Publikováno v:
Phys. Rev. E 103, 010601 (2021)
Understanding the motion of particles on an air-liquid interface can impact a wide range of scientific fields and applications. Diamagnetic particles floating on an air-paramagnetic-liquid interface are previously known to have a repulsive motion fro
Externí odkaz:
http://arxiv.org/abs/2005.03940
Publikováno v:
Soft matter 15 (7), 1508-1521 (2019)
Active colloids self-organise to a variety of collective states, ranging from highly motile 'molecules' to complex 3D structures. Using large-scale simulations, we show that hydrodynamic interactions, together with a gravity-like aligning field, lead
Externí odkaz:
http://arxiv.org/abs/1802.07835
Publikováno v:
The European Physical Journal E 41 (3), 39 (2018)
Using lattice Boltzmann simulations we study the hydrodynamics of an active spherical particle near a no-slip wall. We develop a computational model for an active Janus particle, by considering different and independent mobilities on the two hemisphe
Externí odkaz:
http://arxiv.org/abs/1711.09699
Autor:
Ly, Aboubakry, Würger, Aloïs
Publikováno v:
Soft Matter 14, 848 (2018)
We theoretically study the molecular-weight dependence of DNA thermophoresis, which arises from mutual advection of the n repeat units of the molecular chain. As a main result we find that the dominant driving forces, i.e., the thermally induced perm
Externí odkaz:
http://arxiv.org/abs/1706.09790