Filters

2018 - 20192

More filters

20202
Reset filters

Settings

Author: Karnaushenko, D.D. × Publisher: Washington : American Association for the Advancement of Science (A A A S) ×

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Magnetosensitive e-skins with directional perception for augmented reality
    (Washington : American Association for the Advancement of Science (A A A S), 2018) Cañón Bermúdez, G.S.; Karnaushenko, D.D.; Karnaushenko, D.; Lebanov, A.; Bischoff, L.; Kaltenbrunner, M.; Fassbender, J.; Schmidt, O.G.; Makarov, D.
    Electronic skins equipped with artificial receptors are able to extend our perception beyond the modalities that have naturally evolved. These synthetic receptors offer complimentary information on our surroundings and endow us with novel means of manipulating physical or even virtual objects. We realize highly compliant magnetosensitive skins with directional perception that enable magnetic cognition, body position tracking, and touchless object manipulation. Transfer printing of eight high-performance spin valve sensors arranged into two Wheatstone bridges onto 1.7-mm-thick polyimide foils ensures mechanical imperceptibility. This resembles a new class of interactive devices extracting information from the surroundings through magnetic tags. We demonstrate this concept in augmented reality systems with virtual knob-turning functions and the operation of virtual dialing pads, based on the interaction with magnetic fields. This technology will enable a cornucopia of applications from navigation, motion tracking in robotics, regenerative medicine, and sports and gaming to interaction in supplemented reality.
  • Thumbnail Image
    Item
    Self-assembly of highly sensitive 3D magnetic field vector angular encoders
    (Washington : American Association for the Advancement of Science (A A A S), 2019) Becker, C.; Karnaushenko, D.; Kang, T.; Karnaushenko, D.D.; Faghih, M.; Mirhajivarzaneh, A.; Schmidt, O.G.
    Novel robotic, bioelectronic, and diagnostic systems require a variety of compact and high-performance sensors. Among them, compact three-dimensional (3D) vector angular encoders are required to determine spatial position and orientation in a 3D environment. However, fabrication of 3D vector sensors is a challenging task associated with time-consuming and expensive, sequential processing needed for the orientation of individual sensor elements in 3D space. In this work, we demonstrate the potential of 3D self-assembly to simultaneously reorient numerous giant magnetoresistive (GMR) spin valve sensors for smart fabrication of 3D magnetic angular encoders. During the self-assembly process, the GMR sensors are brought into their desired orthogonal positions within the three Cartesian planes in a simultaneous process that yields monolithic high-performance devices. We fabricated vector angular encoders with equivalent angular accuracy in all directions of 0.14°, as well as low noise and low power consumption during high-speed operation at frequencies up to 1 kHz.