Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flagella-like beating of a single microtubule   Kinesin motors can induce a buckling instability in a microtubule with a
fixed minus end. Here we show that by modifying the surface with a
protein-repellent functionalization and using clusters of kinesin motors, the
microtubule can exhibit persistent oscillatory motion, resembling the beating
of sperm flagella. The observed period is of the order of 1 min. From the
experimental images we theoretically determine a distribution of motor forces
that explains the observed shapes using a maximum likelihood approach. A good
agreement is achieved with a small number of motor clusters acting
simultaneously on a microtubule. The tangential forces exerted by a cluster are
mostly in the range 0 - 8 pN towards the microtubule minus end, indicating the
action of 1 or 2 kinesin motors. The lateral forces are distributed
symmetrically and mainly below 10 pN, while the lateral velocity has a strong
peak around zero. Unlike well-known models for flapping filaments, kinesins are
found to have a strong "pinning" effect on the beating filaments. Our results
suggest new strategies to utilize molecular motors in dynamic roles that depend
sensitively on the stress built-up in the system.

25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph