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Manipulating Microrobots Using Balanced Magnetic and Buoyancy Forces.


ABSTRACT: We present a novel method for the three-dimensional (3D) control of microrobots within a microfluidic chip. The microrobot body contains a hollow space, producing buoyancy that allows it to float in a microfluidic environment. The robot moves in the z direction by balancing magnetic and buoyancy forces. In coordination with the motion of stages in the xy plane, we achieved 3D microrobot control. A microgripper designed to grasp micron-scale objects was attached to the front of the robot, allowing it to hold and deliver micro-objects in three dimensions. The microrobot had four degrees of freedom and generated micronewton-order forces. We demonstrate the microrobot's utility in an experiment in which it grips a 200 ?m particle and delivers it in a 3D space.

SUBMITTER: Feng L 

PROVIDER: S-EPMC6187713 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Manipulating Microrobots Using Balanced Magnetic and Buoyancy Forces.

Feng Lin L   Wu Xiaocong X   Jiang Yonggang Y   Zhang Deyuan D   Arai Fumihito F  

Micromachines 20180129 2


We present a novel method for the three-dimensional (3D) control of microrobots within a microfluidic chip. The microrobot body contains a hollow space, producing buoyancy that allows it to float in a microfluidic environment. The robot moves in the z direction by balancing magnetic and buoyancy forces. In coordination with the motion of stages in the xy plane, we achieved 3D microrobot control. A microgripper designed to grasp micron-scale objects was attached to the front of the robot, allowin  ...[more]

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