Orientations of overdamped magnetic nanorod-gyroscopes.
Overdamped magnetic nanorod-gyroscopes driven by a rotating magnetic field undergo a series of reorientations when sedimenting on top of a surface in a viscous liquid. By changing the amplitude and the rotation frequency of the driving magnetic field, the nanorod-gyroscope either synchronizes or desynchronizes with the field and rotates either around its long or short axis. The different regimes of motion are explained theoretically by coupling the nanorod-gyroscopes motion to the creeping flow equations of the surrounding fluid. It is shown that friction anisotropy plays an important role for the orientation of the nanorod-gyroscopes.
Dhar
Prajnaparamita
P
Department of Chemistry and Biochemistry, The Florida State University, Tallahassee Florida 32306-4390, USA.
Swayne
Cheryl D
CD
Fischer
Thomas M
TM
Kline
Timothy
T
Sen
Ayusman
A
D000054:Acceleration; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008280:Magnetics / Q000295:instrumentation*; D044085:Microfluidics / Q000295:instrumentation*; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D043942:Nanotubes; D014159:Transducers