Light sailboats: Laser driven autonomous microrobots

Búzás, András; Kelemen, Lóránd; Mathesz, Anna; Oroszi, László; Vizsnyiczai, Gaszton; Vicsek, Tamás; Ormos, Pál

doi:10.1063/1.4737646

Cited by 51 publications

(33 citation statements)

References 23 publications

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“…In the absence of a torque, the line of motion is directed parallel to the self-phoretic force and the JP propels itself along a straight line, until it changes direction, due to gradient fluctuations [3] or random collisions against other particles or geometric boundaries [11]. This is the highly stylized case mostly studied in the recent literature, where, for simplicity, the JPs are assumed to be rotationally symmetric around their line of motion (symmetric JPs).…”

Section: Introductionmentioning

confidence: 99%

Manipulating chiral microswimmers in a channel

Ghosh

Marchesoni

et al. 2014

Phys. Rev. E

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We numerically simulate the diffusion of overdampd pointlike Janus particles along narrow two-dimensional periodically corrugated channels with reflecting walls. The self-propulsion velocity of the particle is assumed to rotate subject to an intrinsic bias modeled by a torque. Breaking the mirror symmetry of the channel with respect to its axis suffices to generate a directed particle flow with orientation and magnitude which depend on the channel geometry and the particle swimming properties. This means that chiral microswimmers drift autonomously along a narrow channel under more general asymmetry conditions than previously reported, a property of potential impact on their fabrication and technological applications.

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Section: Introductionmentioning

confidence: 99%

Manipulating chiral microswimmers in a channel

Ghosh

Marchesoni

et al. 2014

Phys. Rev. E

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“…In the absence of a torque, the line of motion is directed parallel to the self-phoretic force and the JP propels itself along a straight line, until it changes direction, due to gradient fluctuations [16] or random collisions against other particles or geometric boundaries [17]. This is the highly stylized case mostly studied in the recent literature, where, for simplicity, the JPs are assumed to be rotationally symmetric around their line of motion (symmetric JPs).…”

Section: Introductionmentioning

confidence: 99%

Active Brownian motion in a narrow channel

Ghosh

et al. 2014

Eur. Phys. J. Spec. Top.

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Abstract. We review recent advances in rectification control of artificial microswimmers, also known as Janus particles, diffusing along narrow, periodically corrugated channels. The swimmer self-propulsion mechanism is modeled so as to incorporate a nonzero torque (propulsion chirality). We first summarize the effects of chirality on the autonomous current of microswimmers freely diffusing in channels of different geometries. In particular, left-right and upside-down asymmetric channels are shown to exhibit different transport properties. We then report new results on the dependence of the diffusivity of chiral microswimmers on the channel geometry and their own self-propulsion mechanism. The self-propulsion torque turns out to play a key role as a transport control parameter.

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“…Microscopic versions of light driven gears [9], wings [10], sailboats [11], reconfigurable micro-environments [12] and other machines inspired by fluid-and aerodynamics had been successfully demonstrated as by-products of beam shaping and microfabrication. But the targeted practical applications of such structures are relatively new.…”

Section: Microtoolsmentioning

confidence: 99%

Fabrication and optical trapping of handling structures for re-configurable microsphere magnifiers

Bañas

Vizsnyiczai

Búzás

et al. 2013

Complex Light and Optical Forces VII

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We demonstrate the use of microfabricated supporting structures for maneuvering and supporting polystyrene microspheres for use as magnifying lenses in imaging applications. The supporting structure isolates the trapping light from the magnifier, hence avoiding direct radiation to the sample being observed which could be damaging, especially for biological specimens. Using an optical trapping setup, we demonstrate the actuation of a microsphere not held by optical traps, and show the possibility of imaging through such microspheres.

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Light sailboats: Laser driven autonomous microrobots

Cited by 51 publications

References 23 publications

Manipulating chiral microswimmers in a channel

Manipulating chiral microswimmers in a channel

Active Brownian motion in a narrow channel

Fabrication and optical trapping of handling structures for re-configurable microsphere magnifiers

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