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SUMMARY:Control of Magnetoelastic Matter - Monica Olvera de la Cruz (North
 western University)
DTSTART:20190515T080000Z
DTEND:20190515T084000Z
UID:TALK124471@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Magnetic materials hold tremendous potential for precision con
 trol of matter due to their tunable interactions in dynamic magnetic field
 s. Flexible superparamagnetic filaments and membranes under the influence 
 of precessing magnetic fields\, for example\, can exert controllable force
 s to generate microscopic actuation. We characterize the resulting changes
  of shapes in terms of their material parameters\, as well as of the stren
 gth of the magnetic field. In particular\, we show how by controlling the 
 magnetic field\, open membranes may form either rippled or helicoidal surf
 aces\, whereas closed membranes can buckle into convex and concave shapes 
 with specific symmetries. Shape control via magnetic fields is also discus
 sed in three-dimensional gels reinforced with ferromagnetic matter. These 
 systems might be suitable for constructing devices with controllable confo
 rmational changes such as artificial muscles. 
LOCATION:Seminar Room 1\, Newton Institute
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