Negative resistance for colloids driven over two barriers in a microchannel.
Negative resistance for colloids driven over two barriers in a microchannel.
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胶体在微通道中穿过两个屏障时的负阻力
DOI:
10.1039/d0sm01700k
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发表时间:
--
期刊:
影响因子:
3.4
通讯作者:
F. Smallenburg
中科院分区:
文献类型:
--
作者:
U. Zimmermann;H. Löwen;C. Kreuter;A. Erbe;P. Leiderer;F. Smallenburg
When considering the flow of currents through obstacles, one core expectation is that the total resistance of sequential single resistors is additive. While this rule is most commonly applied to electronic circuits, it also applies to other transport phenomena such as the flow of colloids or nanoparticles through channels containing multiple obstacles, as long as these obstacles are sufficiently far apart. Here we explore the breakdown of this additivity for fluids of repulsive colloids driven over two energetic barriers in a microchannel, using real-space microscopy experiments, particle-resolved simulations, and dynamical density functional theory. If the barrier separation is comparable to the particle correlation length, the resistance is highly non-additive, such that the resistance added by the second barrier can be significantly higher or lower than that of the first. Surprisingly, in some cases the second barrier can even add a negative resistance, such that two identical barriers are easier to cross than a single one. We explain this counterintuitive observation in terms of the structuring of particles trapped between the barriers.
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影响因子:
3.4
作者:
Mahla Mirzaee;A. Ernst;D. de las Heras;M. Urbaniak;F. Stobiecki;Andreea Tomiţa;Rico Huhnstock;Iris Koch;J. Gördes;A. Ehresmann;Dennis Holzinger;M. Reginka;T. Fischer
通讯作者:
T. Fischer
影响因子:
8.6
作者:
M. Spanner;F. Höfling;S. Kapfer;K. Mecke;G. Schröder;T. Franosch
通讯作者:
T. Franosch
DOI:
10.1073/pnas.1910677116
发表时间:
2020-01-21
影响因子:
11.1
作者:
Chupeau, Marie;Gladrow, Jannes;Trizac, Emmanuel
通讯作者:
Trizac, Emmanuel
DOI:
10.1103/physreve.91.022313
发表时间:
2015
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
U. Siems;P. Nielaba
通讯作者:
P. Nielaba
影响因子:
4.6
作者:
O'Reilly S;Ciechomska M;Fullard N;Przyborski S;van Laar JM
通讯作者:
van Laar JM