Berlin 2015 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 16: Functional materials III: Sensors and Actuators

MM 16.5: Vortrag

Montag, 16. März 2015, 17:00–17:15, TC 010

Compact rolled-up antenna for implants applications — •Dmitriy D. Karnaushenko, Daniil Karnaushenko, Denys Makarov, and Oliver G. Schmidt — Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstraße 20, Dresden

Smart implants were suggested as an efficient tool to monitor physiological processes in the human body, which is crucial especially after, e.g. chirurgical treatment. Compactness of the implants is highly desirable to minimize discomfort during and after implantation. If the length of the device is about 5 mm and diameter of less than 0.5 mm, it can be readily implanted using standard medical syringes. In this spirit, the rolled-up technology [1] was developed to realize multifunctional and compact 3D tubular devices by self-assembly starting from a planar layout. High-performance compact rolled-up active electronics, energy storage, magnetic field and fluidic sensors are already used to acquire and process the data [2,3]. However, the antenna element allowing the communication of the data to an external device, e.g. smartphone or personal computer, is missing. Here, we realized rolled-up helical antenna operating in the Industry-Scientific-Medical (ISM) radio band at 5.8 GHz. With a total length of 5.5 mm it is about 5 times smaller than the conventional dipole antenna. The transmission and receiving signals between rolled-up antennas and the communication between a rolled-up antenna and a smartphone is demonstrated highlighting its applicability for medical implant applications. [1] O. Schmidt et al., Nature 410, 168 (2001). [2] D. Grimm et al., Nano Lett. 13, 213 (2013). [3] I. Moench et al., ACS Nano 9, 7436 (2011).