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Probing collective dynamics of active particles using modulation force spectroscopy
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10.1063/1.1791325
/content/aip/journal/apl/85/12/10.1063/1.1791325
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/12/10.1063/1.1791325
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic of the experiment. (b) Histograms of the response function amplitude of a bead trapped at different passive viscosities (at different glycerol concentrations) at trap modulation frequency . Inset: The mean values for 0% and 70% glycerol concentration as a function of frequency.

Image of FIG. 2.
FIG. 2.

Probability distribution of response amplitude of the trapped bead at laser intensity modulation in(a) 70% glycerol, (b) 0% glycerol, (c) active and passive bacterial bath is plotted. Two representative experimental runs for are shown.

Image of FIG. 3.
FIG. 3.

(a) The power spectrum density for the fluctuation time series of a particle in a dc trap with different volume fractions of bacteria (Ref. 4). The solid lines are a fit to Eq. (4). (b) The simulation result of the ac trap experiment (nonzero ) using the model Eqs. (1), (2), and (5).

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/content/aip/journal/apl/85/12/10.1063/1.1791325
2004-09-24
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Probing collective dynamics of active particles using modulation force spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/85/12/10.1063/1.1791325
10.1063/1.1791325
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