Micro Manipulation Using Magnetic Microrobots

Title
Micro Manipulation Using Magnetic Microrobots
Authors
김진석정진우Hoyeon KimJamel AliU Kei CheangMin Jun Kim
Keywords
microrobot; magnetic control; microtransport; magnetic polarity; micromanipulation
Issue Date
2016-10
Publisher
JOURNAL OF BIONIC ENGINEERING
Citation
VOL 13, NO 4-524
Abstract
When developing microscale robotic systems it is desired that they are capable of performing microscale tasks such as small scale manipulation and transport. In this paper, we demonstrate the transport of microscale objects using single or multiple microrobots in low Reynolds number fluidic environment. The microrobot is composed of a 'U' shaped SU-8 body, coated on one side with nickel. Once the nickel coating is magnetized, the motion of the microrobots can be driven by external magnetic fields. To invoke different responses from two microrobots under a global magnetic field, two batches of microrobots were fabricated with different thicknesses of nickel coating as a way to promote heterogeneity within the microrobot population. The heterogeneity in magnetic content induces different spatial and temporal responses under the same control input, resulting in differences in movement speed. The nickel coated microstructure is manually controlled through a user interface developed using C++. This paper presents a control strategy to navigate the microrobots by controlling the direction and strength of externally applied magnetic field, as well as orientation of the microrobots based on their polarity. In addition, multiple micro robots are used to perform transport tasks.
URI
http://pubs.kist.re.kr/handle/201004/64999
ISSN
1672-6529
Appears in Collections:
KIST Publication > Article
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