Openings: Post-doctoral Researcher/Research Associate, 2-3posts
Candidates with research experience in soft sensors, force and tactile sensors, wearables and implantable devices, flexible electronics, and/or soft robotics are preferred. For further information, please send your CV and a cover letter to:

Sub-μm Self-Displacement Sensing

Here, we present a self-displacement sensing solution for SEMAs without requiring additional hardware. A self-displacement sensing and driving circuit (SDSDC) was developed and evaluated, in which low-frequency driving and high-frequency sensing signals can function simultaneously without interfering with each other, with a sensing resolution of 0.03 µm. It shows promising features for applications from auto-focus lens, voice coil motors, haptic feedback devices and metaverse.

Reconfigurable Multiaxis Force Sensor 

This paper presents a fully integrated, reconfigurable MFS (RMFS), which utilizes an array of PCB coils to detect the multiaxis displacement/rotation of a metal target at high resolution without mechanical or electrical connections. The RMFS prototype achieved an ultrahigh resolution of 1 mN for triaxial force sensing in a range of 20 N. The RMFS shows promising features to be implemented in diverse applications from robotics, human-machine-interaction, and biomedical systems.

Nonarray soft tactile sensor

In this work, we propose a non-array soft tactile sensor (NA-STS) that utilizes two triangle textile electrodes and a rectangle electrode to form a pair of soft capacitive pressure sensors in a differential configuration along its length. The results show that the NA-STS can detect the force as low as 2.1mN and a maximum error of 2.5 mm for contact location. The NA-STS has a simple structure, high performance and rapid response, immune to proximity effect, and robust for real-word applications.

Printed Inductive coil array sensor

Here we presented a printed induction-based array sensor with only two signal terminals. It identifies the material species of approaching and touching objects and also recognizes the speed and shapes of the objects moving dynamically above the sensor. It is demonstrated that a finger-like array sensor with two terminals could provide a simple and reliable structural design for the new robotic applications of material recognition and stimuli position detection.

Split wearable angle sensor

In this work, we propose a film-like split angle sensor (FSAS) which operates through AC magnetic field coupling between a soft planar coil and a ferromagnetic or conductive target film. The FSAS has a split configuration, overcoming the movement impairment problem presented by the strain sensing approach. It was demonstrated for angle sensing and external force detection of a laptop lid, wearable angle monitoring of elbow, and perception of a pneumatic driven origami robot.

Perception of an Origami Robot

A reconfigurable and proprioceptive soft origami module is presented, where two actuation modes (i.e., extension and bending) are realized. Multimodal perception is enabled using a novel foldable self-inductance sensor. An intelligent gripper is capable of grasping mode adjustment, grasping force measurement, and the grasping target’s size measurement. Moreover, an intelligent jellyfish is presented, with buoyancy adjustment and underwater grasping capabilities.