Nanotechweb January 22, 2018
A device that can manipulate virtual objects needs to have two basic functions: the “touch” function and being able to detect the position of an object in space. An international team of researchers (Germany, Austria) synthesized very thin foils upon which they patterned two Wheatstone bridges accommodating a set of eight magnetic field sensors, each with a well-defined magnetic anisotropy axis. By using this configuration, and the intrinsic properties of the sensors themselves, the whole circuit can output two signals associated with the x and y in-plane components of the external magnetic field. The software processes the signals. In tests volunteers wearing the device were able to type on a virtual keypad and even turn a knob on a computer screen without touching the screen… read more. Open Access TECHNICAL ARTICLE  VIDEO
Touchless manipulation of objects based on the interaction with magnetic fields.