Propagating density spikes in light-powered motility-ratchets.
Propagating density spikes in light-powered motility-ratchets.
复制标题
在光动力动力棘轮中传播密度峰值
作者:
C. Lozano;B. Liebchen;B. ten Hagen;C. Bechinger;H. Löwen
Combining experiments and computer simulations, we use a spatially periodic and flashing light-field to direct the motion of phototactic active colloids. Here, the colloids self-organize into a density spike pattern, which resembles a shock wave and propagates over long distances, almost without dispersing. The underlying mechanism involves a synchronization of the colloids with the light-field, so that particles see the same intensity gradient each time the light-pattern is switched on, but no gradient in between (for example). This creates pulsating transport whose strength and direction can be controlled via the flashing protocol and the self-propulsion speed of the colloids. Our results might be useful for drug delivery applications and can be used to segregate active colloids by their speed.
登录
查看更多内容
影响因子:
13.6
作者:
Kaiser A;Snezhko A;Aranson IS
通讯作者:
Aranson IS
影响因子:
13.6
作者:
Stenhammar J;Wittkowski R;Marenduzzo D;Cates ME
通讯作者:
Cates ME
影响因子:
3.3
作者:
A. Zampetaki;P. Schmelcher;H. Löwen;B. Liebchen
通讯作者:
B. Liebchen
影响因子:
4.4
作者:
Schmidt, Falko;Liebchen, Benno;Volpe, Giovanni
通讯作者:
Volpe, Giovanni
影响因子:
2.7
作者:
A. Geiseler;P. Hänggi;F. Marchesoni
通讯作者:
F. Marchesoni