Prof. Makarov will give a public talk on May 21 2024 at 2 pm in room SR043 of BioQuant (INF 267, ground floor).

Title: Flexible, printable and eco-sustainable magnetoelectronics for human-machine interfaces and robotics

Abstract: Motion sensing is the primary task in numerous disciplines including industrial robotics, prosthetics, virtual and augmented reality appliances. In rigid electronics, rotations, displacements and vibrations are typically monitored using magnetic field sensors. Here, we will discuss the fabrication of flexible, stretchable and printable magnetoelectronic devices. The technology platform relies on high-performance magnetoresistive and Hall effect sensors deposited or printed on polymeric foils. These skin conformal flexible and printable magnetosensitive elements enable touchless interactivity with our surroundings based on the interaction with magnetic fields, which is relevant for smart skins [1,2,3], smart wearables [4,5], soft robotics [6] and human-machine interfaces [7]. These mechanically conformable sensors assess the magnetic state at the actuator location and decide on the desired actuation patterns as well as enable communication of with external devices for self-guided assembly. We will introduce solution processable magnetoelectronics that can be flexible [8] and even stretchable [3], capable of detection in a broad range of magnetic fields and withstand extreme mechanical deformations. We employed alternating magnetic fields to manipulate magnetic composites allowing us to achieve self-healable printed magnetoresistive sensors [9] paving the way towards eco-sustainability of magnetoelectronics [10].

About the speaker: Denys Makarov received his Master Degree (2005) at the National University of Kyiv in Ukraine, followed by a Ph.D. in physics (2008) from the University of Konstanz in Germany. Currently, he is head of department “Intelligent materials and systems” at the Helmholtz-Zentrum Dresden-Rossendorf and leads the Helmholtz Innovation Lab FlexiSens. With his activities, Denys made a decisive contribution to the development of the field of curvilinear magnetism and stimulated research on spintronics on flexible, bendable and stretchable surfaces. Mechanically flexible and skin-conformal magnetic field sensors enable new application scenarios for human-machine interfaces, eMobility and medicine. These activities are supported via major national and European projects including ERC StG 2012, ERC PoC 2013&2017 and ERC AdG 2024. Denys is Senior Member of the IEEE and Fellow of the Young Academy of Europe.

[1] G. S. Canon Bermudez et al., Electronic-skin compasses for geomagnetic field driven artificial magnetoreception and interactive electronics. Nature Electronics 1, 589 (2018).

[2] J. Ge et al., A bimodal soft electronic skin for tactile and touchless interaction in real time. Nature Communications 10, 4405 (2019).

[3] M. Ha et al., Printable and stretchable giant magnetoresistive sensors for highly compliant and skin-conformal electronics. Adv. Mater. 33, 2005521 (2021).

[4] P. Makushko et al., Flexible magnetoreceptor with tunable Intrinsic logic for on-skin touchless human-machine interfaces. Adv. Funct. Mat. 31, 2101089 (2021).

[5] S. Li et al., Self-powered stretchable strain sensors for motion monitoring and wireless control. Nano Energy 92, 106754 (2022).

[6] M. Ha et al., Reconfigurable magnetic origami actuators with on-board sensing for guided assembly. Adv. Mater. 33, 2008751 (2021).

[7] G. S. Canon Bermudez et al., Magnetosensitive e-skins for interactive devices. Adv. Funct. Mater. (Review) 31, 2007788 (2021).

[8] E. S. Oliveros Mata et al., Dispenser printed bismuth-based magnetic field sensors with non-saturating large magnetoresistance for touchless interactive surfaces. Adv. Mater. Technol. 7, 2200227 (2022).

[9] R. Xu et al., Self-healable printed magnetic field sensors using alternating magnetic fields. Nature Communications 13, 6587 (2022).

[10] E. S. Oliveros Mata et al., Magnetically aware actuating composites: Sensing features as inspiration for the next step in advanced magnetic soft robotics. Phys. Rev. Appl. (Review) 20, 060501 (2023).