Speaker
Description
The extension of nanotechnology into three dimensions presents compelling opportunities to explore emergent physical phenomena while enabling the realization of next-generation 3D device architectures for future computing. At the same time, this transition introduces substantial challenges, requiring advanced nanofabrication strategies that surpass the limits of conventional lithographic techniques.
In this presentation, I will highlight our recent advances in nanoscale 3D printing based on focused electron-beam-induced deposition. This platform, developed within our group, allows for the precise fabrication of arbitrary three-dimensional nano-geometries, providing a versatile route to experimentally access phenomena that arise specifically from three-dimensionality. Particular emphasis will be placed on applications in nanomagnetism and superconductivity.
I will present representative examples of 3D nano-devices that reveal these novel effects, including the stabilization of complex topological spin textures and defects, the formation of topological stray fields in free space, the manipulation of domain wall motion via strong 3D geometric gradients, unconventional magnetotransport signatures linked to intricate demagnetizing fields, and the reconfigurable behavior of superconducting vortex circuits.
Furthermore, I will discuss complementary experimental and computational methodologies developed in our group, such as dark-field magneto-optics, which enable detailed characterization of these systems. In addition, we will compare key differences between fabrication approaches based on focused electrons and ions, highlighting their respective advantages and limitations for 3D nanostructuring. Finally, I will outline prospects for 3D nanostructures in emerging areas including spintronics, magnonics, and fluxonics.