A hierarchically patterned, bioinspired e-skin able to detect the direction of applied pressure for robotics

@article{Negre2018AHP,
  title={A hierarchically patterned, bioinspired e-skin able to detect the direction of applied pressure for robotics},
  author={Marc Negre and Mikael Jorda and Orestis Vardoulis and Alex Chortos and Oussama Khatib and Zhenan Bao},
  journal={Science Robotics},
  year={2018},
  volume={3}
}
An e-skin that uses multiple levels of biologically inspired patterning is capable of discriminating both normal and tangential forces. Tactile sensing is required for the dexterous manipulation of objects in robotic applications. In particular, the ability to measure and distinguish in real time normal and shear forces is crucial for slip detection and interaction with fragile objects. Here, we report a biomimetic soft electronic skin (e-skin) that is composed of an array of capacitors and… 

GTac: A Biomimetic Tactile Sensor With Skin-Like Heterogeneous Force Feedback for Robots

This paper designs and fabricates a biomimetic tactile sensor with skin-like heterogeneity that perceives normal and shear contact forces simultaneously and mimics the multilayered structure of mechanoreceptors in human skin by combining an extrinsic layer (piezoresistive sensors) and an intrinsic layer (a Hall sensor) so that it can perform estimation of contact force directions, locations, and joint-level torque.

Nondestructive identification of softness via bioinspired multisensory electronic skins integrated on a robotic hand

A scatheless measuring methodology based on the multisensory electronic skins to quantify the elastic coefficient of soft materials is reported, contributing to an appropriate contact force assignment for subsequent quantitative measurements via strain sensing feedback.

Highly Selective Biomimetic Flexible Tactile Sensor for Neuroprosthetics

A biomimetic flexible capacitive sensor to selectively detect static and sliding friction forces and a custom-designed signal encoding circuit was designed to transform the capacitance signal into a bionic pulsed signal modulated by the applied sliding friction force.

Hollow MXene Sphere-Based Flexible E-Skin for Multiplex Tactile Detection.

A flexible electronic skin which can measure and discriminate the contact parameters in real time is designed and is the first stretchable electrode to utilize the 3D hollow MXene spheres with the essential characteristic, which can effectively avoid the drawbacks of stress concentration and shedding of the conductive layer.

Soft Biomimetic Optical Tactile Sensing With the TacTip: A Review

This article reviews the BRL TacTip as a prototypical example of a SoftBOT (Soft Biomimetic Optical Tactile) sensor and discusses the relation between artificial skin morphology and the transduction principles of human touch.

Fully 3D Printed Flexible, Conformal and Multi-directional Tactile Sensor with Integrated Biomimetic and Auxetic Structure

Tactile sensors are instrumental for developing the next generation of biologically inspired robotic prostheses with tactile feedback. Despite significant advancements made in current sensing

Ultra-High Sensitive Fin-Like Double-Sided E-Skin for Force Direction Detection.

A three-dimensional elastic porous carbon nanotubes (CNTs) sponge is synthesized by chemical vapor deposition, which is successfully applied in the piezoresistive sensor and a fin-like flexible double-sided electronic skin is fabricated by a simple method to achieve force direction detection.

A biomimetic elastomeric robot skin using electrical impedance and acoustic tomography for tactile sensing

Human skin perceives physical stimuli applied to the body and mitigates the risk of physical interaction through its soft and resilient mechanical properties. Social robots would benefit from

Ionic Tactile Sensors for Emerging Human‐Interactive Technologies: A Review of Recent Progress

In this review, the recent developments of the ITS based on the novel concepts, structural designs, and strategies in materials innovation are entirely highlighted and the recent progress in self‐powered and self‐healable ITS, which should be strongly required to allow human‐interactive artificial sensory platforms is reviewed.

High‐Density Force and Temperature Sensing Skin Using Micropillar Array with Image Sensor

A machine tactile sensing system is proposed based on machine vision, which is commonly referred to as “electronic skin” or “e‐skin” with a high density similar to that of human skin, which can successfully measure 3D force and temperature distribution simultaneously.
...

References

SHOWING 1-10 OF 45 REFERENCES

Tactile-direction-sensitive and stretchable electronic skins based on human-skin-inspired interlocked microstructures.

The unique geometry of interlocked microdome arrays enables the differentiation of various mechanical stimuli because the arrays exhibit different levels of deformation depending on the direction of applied forces, thus providing different sensory output patterns.

Bioinspired flexible microfluidic shear force sensor skin

Stretchable silicon nanoribbon electronics for skin prosthesis

A stretchable prosthetic skin composed of ultrathin single crystalline silicon nanoribbon array, which can sense strain, pressure and temperature spontaneously is reported, thus providing unique opportunities for emerging classes of prostheses and peripheral nervous system interface technologies.

A skin-inspired organic digital mechanoreceptor

This work presents a power-efficient skin-inspired mechanoreceptor with a flexible organic transistor circuit that transduces pressure into digital frequency signals directly, and represents a step toward the design and use of large-area organic electronic skins with neural-integrated touch feedback for replacement limbs.

Skin-like pressure and strain sensors based on transparent elastic films of carbon nanotubes.

Transparent, conducting spray-deposited films of single-walled carbon nanotubes are reported that can be rendered stretchable by applying strain along each axis, and then releasing this strain.

A flexible and highly sensitive strain-gauge sensor using reversible interlocking of nanofibres.

A simple architecture for a flexible and highly sensitive strain sensor that enables the detection of pressure, shear and torsion and can be used to monitor signals ranging from human heartbeats to the impact of a bouncing water droplet on a superhydrophobic surface is presented.

Directions Toward Effective Utilization of Tactile Skin: A Review

The state of the art and the research issues in tactile sensing, with the emphasis on effective utilization of tactile sensors in robotic systems are surveyed, recognizing the fact that the system performance tends to depend on how its various components are put together.

Giant tunneling piezoresistance of composite elastomers with interlocked microdome arrays for ultrasensitive and multimodal electronic skins.

A design of flexible electronic skins based on composite elastomer films that contain interlocked microdome arrays and display giant tunneling piezoresistance are introduced and it is shown that the sensors can sensitively monitor human breathing flows and voice vibrations, highlighting their potential use in wearable human-health monitoring systems.

An electrically and mechanically self-healing composite with pressure- and flexion-sensitive properties for electronic skin applications.

This work describes a composite material composed of a supramolecular organic polymer with embedded nickel nanostructured microparticles, which shows mechanical and electrical self-healing properties at ambient conditions and shows that the material is pressure- and flexion-sensitive, and therefore suitable for electronic skin applications.