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Optically Driven Ja...
Optically Driven Janus Microengine with Full Orbital Motion Control
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Bronte Ciriza, David (author)
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- Callegari, Agnese (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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Donato, Maria Grazia (author)
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Cicek, Berk (author)
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Magazzu, Alessandro (author)
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Kasianiuk, Iryna (author)
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Kasyanyuk, Denis (author)
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Schmidt, Falko (author)
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Foti, Antonino (author)
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Gucciardi, Pietro G. (author)
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- Volpe, Giovanni, 1979 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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Lanza, Maurizio (author)
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Biancofiore, Luca (author)
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Marago, Onofrio M. (author)
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: ACS PHOTONICS. - 2330-4022. ; 10:9, s. 3223-3232
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https://doi.org/10.1...
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Abstract
Subject headings
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- Microengines have shown promise for a variety of applications in nanotechnology, microfluidics, and nanomedicine, including targeted drug delivery, microscale pumping, and environmental remediation. However, achieving precise control over their dynamics remains a significant challenge. In this study, we introduce a microengine that exploits both optical and thermal effects to achieve a high degree of controllability. We find that in the presence of a strongly focused light beam, a gold-silica Janus particle becomes confined at the stationary point where the optical and thermal forces balance. By using circularly polarized light, we can transfer angular momentum to the particle, breaking the symmetry between the two forces and resulting in a tangential force that drives directed orbital motion. We can simultaneously control the velocity and direction of rotation of the particle changing the ellipticity of the incoming light beam while tuning the radius of the orbit with laser power. Our experimental results are validated using a geometrical optics phenomenological model that considers the optical force, the absorption of optical power, and the resulting heating of the particle. The demonstrated enhanced flexibility in the control of microengines opens up new possibilities for their utilization in a wide range of applications, including microscale transport, sensing, and actuation.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- microengines
- microscale control
- Janus particles
- light polarization
- optical forces
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Bronte Ciriza, D ...
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Callegari, Agnes ...
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Donato, Maria Gr ...
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Cicek, Berk
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Magazzu, Alessan ...
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Kasianiuk, Iryna
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show more...
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Kasyanyuk, Denis
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Schmidt, Falko
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Foti, Antonino
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Gucciardi, Pietr ...
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Volpe, Giovanni, ...
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Lanza, Maurizio
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Biancofiore, Luc ...
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Marago, Onofrio ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
- Articles in the publication
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ACS PHOTONICS
- By the university
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University of Gothenburg