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UID:DSC-14277
DTSTART;TZID=Europe/Berlin:20180411T133000
SEQUENCE:1523433417
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20180411T143000
URL:https://dresden-science-calendar.de/calendar/en/detail/14277
LOCATION:IFW\, Helmholtzstraße 2001069 Dresden
SUMMARY:Becker: Self-assembled 3D magnetic vector field sensorics
CLASS:PUBLIC
DESCRIPTION:Speaker: Christian Becker\nInstitute of Speaker: IFW Dresden (I
 IN)\nTopics:\nMaterialien\, Physik\n Location:\n  Name: IFW (B3E.26\, IIN)
 \n  Street: Helmholtzstraße 20\n  City: 01069 Dresden\n  Phone: \n  Fax: 
 \nDescription: An autonomous shape transformation has become a vital strat
 egy in fabrication of compact three-dimensional mesoscopic systems\, where
  conventional technologies fail.[1] Among numerous of self-assembly proces
 ses[2]\, self-folding of thin 2D patterned sheets has been extensively exp
 lored in recent years to build robots\, drug delivery scaffolds and micro 
 surgery tools owing to the direct compatibility with micro fabrication tec
 hnologies. Polymeric and inorganic smart materials were synthesized especi
 ally to meet photolithographic requirements with novel self-reshaping func
 tions. These materials have been already able to demonstrate the self-asse
 mbly capability into diverse 3D mesoscopic architectures of polyhedral\, s
 pherical or cylindrical geometries with an ultimate technological and func
 tional convergence into complex microsystems. Purely relying on a parallel
  wafer scale process these technologies has been already allowing to enhan
 ce accuracy\, throughput and manufacturing efficiency of complex 3D photon
 ic\, sensing\, energy and electromagnetic functional elements\, circuits a
 nd systems.[3–5] However\, among numerous existing concepts\, applicatio
 n of the self-assembly strategy in a class of sensors and systems such as 
 magnetic field sensors\, which rely on a spatial orientation has not been 
 explored so far. The electric and magnetic functionality of such devices\,
  namely the sensitivity towards e.g. fields and gradients\, strongly depen
 ds on an orientation of device principal planes or vectors in a 3D environ
 ment. Fabrication of such unidirectional devices has a long practice in in
 dustry\, while realization of multidirectional devices on a wafer scale in
  a parallel fashion is still associated with enormous challenges requiring
  sequential time consuming steps. In this respect\, an automatic rearrange
 ment of directional elements in a 3D space has a strong potential for real
 ization of direction sensitive 3D systems produced via microfabrication te
 chnologies and a 3D self-assembly of smart materials from the planar state
 . In my talk\, I will demonstrate the first realization of this intriguing
  concept utilizing shapeable polymeric materials. A number of magnetic fie
 ld sensors\, that initially possess a common principal plane and unidirect
 ional sensitivity\, were rearranged in a 3D space using self-assembled in 
 a tube shapeable ultrathin films. Magnetic sensors were allocated on the s
 urface of the microarchitecture achieving two principal planes forming a s
 emi-orthogonal basis. This arrangement of magnetic sensors allows measurem
 ent of magnetic field direction of a permanent magnet located in a 3D spac
 e\, the feature which is highly demanded in industry\, robotics and medici
 ne for position monitoring and diagnostics.
DTSTAMP:20260618T064350Z
CREATED:20180407T073654Z
LAST-MODIFIED:20180411T075657Z
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