Magnetic switch

Magnetic switches for smart surfaces

Anisotropic rodlike supraparticles of magnetic nanoparticles.
Anisotropic rodlike supraparticles of magnetic nanoparticles.
Alignment control in a magnetic field. Variable transmission and angle-dependent optical properties.
Alignment control in a magnetic field. Variable transmission and angle-dependent optical properties.
Magnetic field dependent photonic effect of a dispersion of magnetic nanoparticle clusters. <br> <br>
© Fraunhofer ISC
Magnetic field dependent photonic effect of a dispersion of magnetic nanoparticle clusters.

Magnetic (nano)particles are a core topic of particle technology in Würzburg. Although much research has already been done in this field and there are also a number of established applications, their potential is far from exhausted for all conceivable applications. In particular, smart surfaces that react to magnetic stimuli are visionary and a field of work in which a decisive contribution to new developments can still be made.
 

Challenge

In the course of advancing technical development and the resulting requirements for suitable interaction possibilities, smart surfaces that react to external stimuli or are able to register changes in a system play an increasingly important role. Until now, optical, pressure-sensitive and above all conductive materials have been widely used. Both the application environments to be developed and the advanced surface materials pose new challenges for the signal generators to be used. We are looking for switchable (nano)materials that are optimized for these areas, are suitable for use in smart surfaces and open up new interaction possibilities.
 

System

Anisotropic magnetic structures allow:

  • Provision of magnetically switchable optical components
  • Controllable switching between anisotropic and isotropic behavior after modification
  • Design of materials with identity or condition characteristics based on anisotropic properties

Consequently, access to novel magnetic switches is not limited solely to the structure and properties of selected magnetic (nano)particles, but can also be achieved through the realization of corresponding (nano)particle composites or through the use of specific components.
 

Offer

Application-specific modification and integration of magnetic switches in intelligent materials, with application in intelligent, controllable displays, grids and surfaces.