Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Propulsion driven by self-oscillation via an electrohydrodynamic
  instability   Oscillations of flagella and cilia play an important role in biology, which
motivates the idea of functional mimicry as part of bio-inspired applications.
Nevertheless, it still remains challenging to drive their artificial
counterparts to oscillate via a steady, homogeneous stimulus. Combining theory
and simulations, we demonstrate a strategy to achieve this goal by using an
elasto-electro-hydrodynamic instability. In particular, we show that applying a
uniform DC electric field can produce self-oscillatory motion of a microrobot
composed of a dielectric particle and an elastic filament. Upon tuning the
electric field and filament elasticity, the microrobot exhibits three distinct
behaviors: a stationary state, undulatory swimming and steady spinning, where
the swimming behavior stems from an instability emerging through a Hopf
bifurcation. Our results imply the feasibility of engineering self-oscillations
by leveraging the elasto-viscous response to control the type of bifurcation
and the form of instability. We anticipate that our strategy will be useful in
a broad range of applications imitating self-oscillatory natural phenomena and
biological processes.

20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int