Veering the motion of a magnetic chemical locomotive in a liquid.
The motion of micron-sized catalytic polymer beads coated with thin film or nanoparticle form of Ni in aqueous H(2)O(2) is reported herein. In the absence of any magnetic field, the beads moved vertically upward in the medium, owing to sufficient bubbles deposited on them following catalytic decomposition of H(2)O(2) by Ni. However, in the presence of an external magnetic field (perpendicular to the direction of motion), angular deviation in the motion is observed, with the deviations increasing with the strength of the field. The results are explained based on a model involving interaction of the beads with the external magnetic field.
Dey
Krishna Kanti
KK
Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, India.
Sharma
Deepika
D
Basu
Saurabh
S
Chattopadhyay
Arun
A
D006861:Hydrogen Peroxide / Q000737:chemistry; D008280:Magnetics; D053768:Metal Nanoparticles / Q000737:chemistry; D009038:Motion; D009532:Nickel / Q000737:chemistry; D011108:Polymers / Q000737:chemistry
D011108:Polymers; D009532:Nickel; D006861:Hydrogen Peroxide