Electrical engineering

Physics

Proximity sensor

CMOS

Operating system

Magnetic field

Magnetoresistance

Matrix (chemical analysis)

Electronic circuit

Operational amplifier

Machine learning

Engineering

Composite material

Amplifier

Materials science

Programming language

Sensitivity (control systems)

Electronic engineering

SIGNAL (programming language)

Computer science

Quantum mechanics

Computer hardware

Optoelectronics

Shift register

Sensor array

Magnetic amplifier

Science Advances

Artificial electronic skins (e-skins) comprise an integrated matrix of flexible devices arranged on a soft, reconfigurable surface. These sensors must perceive physical interaction spaces between external objects and robots or humans. Among various types of sensors, flexible magnetic sensors and the matrix configuration are preferable for such position sensing. However, sensor matrices must efficiently map the magnetic field with real-time encoding of the positions and motions of magnetic objects. This paper reports an ultrathin magnetic sensor matrix system comprising a 2 × 4 array of magnetoresistance sensors, a bootstrap organic shift register driving the sensor matrix, and organic signal amplifiers integrated within a single imperceptible platform. The system demonstrates high magnetic sensitivity owing to the use of organic amplifiers. Moreover, the shift register enabled real-time mapping of 2D magnetic field distribution.

Imperceptible magnetic sensor matrix system integrated with organic driver and amplifier circuits