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Semináře

Magnetoelectric Nanorobot – A revolutionary nanoscale device for targeted treatment

Úterý, 04.02.2020 10:00

Soutik Betal

World’s Smallest medical robot as the record set on Guinness World Records works on magnetoelectric mechanism in a core-shell heterostructured nanocomposite. Under influence of remotely applied modulated magnetic field, the core and shell of the nanostructure interact with each other to generate high localized electric field. The magnetic body guides and excites Nanorobot’s propel. The on demand shell’s electrification gives Nanorobot, a capability to act as an ambient electrical field sensor in bio-cellular environment and performs four remotely controlled cellular interactions. Sensing...

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Chirally coupled nanomagnets

Pondělí, 17.02.2020 11:00

Aleš Hrabec (ETH Zurich & Paul Scherrer Institut, Switzerland)

Magnetically coupled nanomagnets have many potential applications. In order to realize functional two-dimensional networks of coupled nanoscale magnetic elements, it is desirable to engineer effective lateral magnetic couplings in a controllable way. I will show that we are able to develop a method to control the lateral coupling between adjacent magnetic nanostructures based on the interfacial Dzyaloshinskii-Moriya interaction (DMI). We have patterned regions with in-plane (IP) and out-of-plane (OOP) magnetic anisotropy in a magnetic element using selective oxidation of Pt/Co/Al films, and the magnetization in the OOP and IP parts of the islands are coupled via DMI arising from the Pt underlayer. This results in chirally coupled magnetization. We have exploited this concept for various applications.

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