Precise localization and control of catalytic Janus micormotors using weak magnetic fields

Islam S.M. Khalil, Veronika Magdanz, Samuel Sanchez, Oliver G. Schmidt, Sarthak Misra

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Abstract

We experimentally demonstrate the precise localization of spherical Pt-Silica Janus micromotors (diameter 5 µm) under the influence of controlled magnetic fields. First, we control the motion of the Janus micromotors in two-dimensional (2D) space. The control system achieves precise localization within an average region-of-convergence of 7 µm. Second, we show that these micromotors provide sufficient propulsion force, allowing them to overcome drag and gravitational forces and move both downwards and upwards. This propulsion is studied by moving the micromotors in three-dimensional (3D) space. The micromotors move downwards and upwards at average speeds of 19.1 µm/s and 9.8 µm/s, respectively. Moreover, our closed-loop control system achieves localization in 3D space within an average region-of-convergence of 6.3 µm in diameter. The precise motion control and localization of the Janus micromotors in 2D and 3D spaces provides broad possibilities for nanotechnology applications.
Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalInternational journal of advanced robotic systems
Volume12
Issue number1
DOIs
Publication statusPublished - 2015

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Micromotors
Magnetic fields
Propulsion
Closed loop control systems
Motion control
Nanotechnology
Drag
Silica
Control systems

Keywords

  • METIS-310820
  • IR-100502

Cite this

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title = "Precise localization and control of catalytic Janus micormotors using weak magnetic fields",
abstract = "We experimentally demonstrate the precise localization of spherical Pt-Silica Janus micromotors (diameter 5 µm) under the influence of controlled magnetic fields. First, we control the motion of the Janus micromotors in two-dimensional (2D) space. The control system achieves precise localization within an average region-of-convergence of 7 µm. Second, we show that these micromotors provide sufficient propulsion force, allowing them to overcome drag and gravitational forces and move both downwards and upwards. This propulsion is studied by moving the micromotors in three-dimensional (3D) space. The micromotors move downwards and upwards at average speeds of 19.1 µm/s and 9.8 µm/s, respectively. Moreover, our closed-loop control system achieves localization in 3D space within an average region-of-convergence of 6.3 µm in diameter. The precise motion control and localization of the Janus micromotors in 2D and 3D spaces provides broad possibilities for nanotechnology applications.",
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Precise localization and control of catalytic Janus micormotors using weak magnetic fields. / Khalil, Islam S.M.; Magdanz, Veronika; Sanchez, Samuel; Schmidt, Oliver G.; Misra, Sarthak .

In: International journal of advanced robotic systems, Vol. 12, No. 1, 2015, p. 1-7.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Sanchez, Samuel

AU - Schmidt, Oliver G.

AU - Misra, Sarthak

PY - 2015

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N2 - We experimentally demonstrate the precise localization of spherical Pt-Silica Janus micromotors (diameter 5 µm) under the influence of controlled magnetic fields. First, we control the motion of the Janus micromotors in two-dimensional (2D) space. The control system achieves precise localization within an average region-of-convergence of 7 µm. Second, we show that these micromotors provide sufficient propulsion force, allowing them to overcome drag and gravitational forces and move both downwards and upwards. This propulsion is studied by moving the micromotors in three-dimensional (3D) space. The micromotors move downwards and upwards at average speeds of 19.1 µm/s and 9.8 µm/s, respectively. Moreover, our closed-loop control system achieves localization in 3D space within an average region-of-convergence of 6.3 µm in diameter. The precise motion control and localization of the Janus micromotors in 2D and 3D spaces provides broad possibilities for nanotechnology applications.

AB - We experimentally demonstrate the precise localization of spherical Pt-Silica Janus micromotors (diameter 5 µm) under the influence of controlled magnetic fields. First, we control the motion of the Janus micromotors in two-dimensional (2D) space. The control system achieves precise localization within an average region-of-convergence of 7 µm. Second, we show that these micromotors provide sufficient propulsion force, allowing them to overcome drag and gravitational forces and move both downwards and upwards. This propulsion is studied by moving the micromotors in three-dimensional (3D) space. The micromotors move downwards and upwards at average speeds of 19.1 µm/s and 9.8 µm/s, respectively. Moreover, our closed-loop control system achieves localization in 3D space within an average region-of-convergence of 6.3 µm in diameter. The precise motion control and localization of the Janus micromotors in 2D and 3D spaces provides broad possibilities for nanotechnology applications.

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