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arXiv · 1805.00656

Rolled-up self-assembly of compact magnetic inductors, transformers and resonators

Dmitriy D. Karnaushenko·Daniil Karnaushenko·Hans-Joachim Grafe·Vladislav Kataev·Bernd Büchner·Oliver G. Schmidt
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Abstract

Three-dimensional self-assembly of lithographically patterned ultrathin films opens a path to manufacture microelectronic architectures with functionalities and integration schemes not accessible by conventional two-dimensional technologies. Among other microelectronic components, inductances, transformers, antennas and resonators often rely on three-dimensional configurations and interactions with electromagnetic fields requiring exponential fabrication efforts when downscaled to the micrometer range. Here, the controlled self-assembly of functional structures is demonstrated. By rolling-up ultrathin films into cylindrically shaped microelectronic devices we realized electromagnetic resonators, inductive and mutually coupled coils. Electrical performance of these devices is improved purely by transformation of a planar into a cylindrical geometry. This is accompanied by an overall downscaling of the device footprint area by more than 50 times. Application of compact self-assembled microstructures has significant impact on electronics, reducing size, fabrication efforts, and offering a wealth of new features in devices by 3D shaping.

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Dmitriy D. Karnaushenko, Daniil Karnaushenko, Hans-Joachim Grafe, Vladislav Kataev, Bernd Büchner, Oliver G. Schmidt. 2018-05-02. Rolled-up self-assembly of compact magnetic inductors, transformers and resonators. https://doi.org/10.1002/aelm.201800298

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