Biomimetic temperature-sensing layer for artificial skins

Giacomo, Raffaele Di; Bonanomi, Luca; Costanza, Vincenzo; Maresca, Bruno; Daraio, Chiara

doi:10.1126/scirobotics.aai9251

Cited by 55 publications

(59 citation statements)

References 34 publications

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“…The devices are electrically characterized under different modes of deformations and show no performance degradation while bent to a radius of curvature equal to 6 mm, stretched to 20%, and twisted to 180°. To prove the versatility of our approach, a biocompatible and flexible temperature sensor is realized through the combination of our engineered substrate and pectin, which is a temperature‐sensitive material present in plant cells . The resistive response of the sensor allows the temperature monitoring in a range from 13 to 28 °C, with a reported sensitivity equal to 10 mK .…”

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confidence: 99%

Design of Engineered Elastomeric Substrate for Stretchable Active Devices and Sensors

Cantarella

Costanza

Ferrero

et al. 2018

Adv Funct Materials

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In the field of flexible electronics, emerging applications require biocompatible and unobtrusive devices, which can withstand different modes of mechanical deformation and achieve low complexity in the fabrication process. Here, the fabrication of a mesa-shaped elastomeric substrate, supporting thin-film transistors (TFTs) and logic circuits (inverters), is reported. High-relief structures are designed to minimize the strain experienced by the electronics, which are fabricated directly on the pillars' surface. In this design configuration, devices based on amorphous indium-gallium-zinc-oxide can withstand different modes of deformation. Bending, stretching, and twisting experiments up to 6 mm radius, 20% uniaxial strain, and 180° global twisting, respectively, are performed to show stable electrical performance of the TFTs. Similarly, a fully integrated digital inverter is tested while stretched up to 20% elongation. As a proof of the versatility of mesa-shaped geometry, a biocompatible and stretchable sensor for temperature mapping is also realized. Using pectin, which is a temperature-sensitive material present in plant cells, the response of the sensor shows current modulation from 13 to 28 °C and functionality up to 15% strain. These results demonstrate the performance of highly flexible electronics for a broad variety of applications, including smart skin and health monitoring.

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mentioning

confidence: 99%

Design of Engineered Elastomeric Substrate for Stretchable Active Devices and Sensors

Cantarella

Costanza

Ferrero

et al. 2018

Adv Funct Materials

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“…The device operated based on differences in charge mobility caused by temperature changes due to a charge trapping effect along the dielectric/semiconductor interface. The tascPLA‐OFET array was further found to show thermal stability and biocompatibility for up to 4 d. A biomimetic pectin skin developed by Daraio and co‐workers is another notable recent work . Inspired by the use of ion channels to govern temperature sensitivity as seen in snakes, the authors exploited the thermally reversible nature of ionic crosslinking in pectin to form highly sensitive artificial skins.…”

Section: Replicating Properties Of Skinmentioning

confidence: 99%

“…This is caused by the thermal dissociation of ionic crosslinks between the pectin chains and Ca 2+ cations. Reproduced with permission . Copyright 2017, American Association for the Advancement of Science.…”

Section: Replicating Properties Of Skinmentioning

confidence: 99%

“…The tascPLA-OFET array was further found to show thermal stability and biocompatibility for up to 4 d. A biomimetic pectin skin developed by Daraio and co-workers is another notable recent work. [139] Inspired by the use of ion channels to govern temperature sensitivity as seen in snakes, the authors exploited the thermally reversible nature of ionic crosslinking in pectin [140] to form highly sensitive artificial skins. This resulted in an exceptional sensitivity, with the skin capable of detecting warm objects positioned up to 1 m away ( Figure 7C).…”

Section: Thermal Sensing In Artificial Skinsmentioning

confidence: 99%

Section: State Of Sensory Perception In Artificial Skin Devicesmentioning

confidence: 99%

See 2 more Smart Citations

Using Artificial Skin Devices as Skin Replacements: Insights into Superficial Treatment

Low

Liu

Owh

et al. 2019

Small

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Artificial skin devices are able to mimic the flexibility and sensory perception abilities of the skin. They have thus garnered attention in the biomedical field as potential skin replacements. This Review delves into issues pertaining to these skin‐deep devices. It first elaborates on the roles that these devices have to fulfill as skin replacements, and identify strategies that are used to achieve such functionality. Following which, a comparison is done between the current state of these skin‐deep devices and that of natural skin. Finally, an outlook on artificial skin devices is presented, which discusses how complementary technologies can create skin enhancements, and what challenges face such devices.

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A Potentiometric Electronic Skin for Thermosensation and Mechanosensation

Zhu

Evans

et al. 2021

Adv Funct Materials

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Electronic skins (e-skins) that mimic the thermosensation and mechanosensation functionalities of natural skin are highly desired for the emerging fields of prosthetics and robotics. Advances in the materials and architecture of e-skins have been made; nevertheless, sensing mechanism innovations are rarely explored. Here, inspired by the skin sensory behaviors, a single potentiometric sensing scheme for both thermosensation and mechanosensation functionalities are presented. Through careful materials selection, component optimization, and structure configuration, the coupling effect between thermosensation and mechanosensation can be significantly minimized. Such a potentiometric sensing scheme enables one to create a new class of energy-efficient e-skin with distinctive characteristics that are highly analogous to those of natural human skin. The e-skin reported here features ultralow power consumption (at nanowatt level), greatly simplified operation (only voltage output), ultrahigh sensitivity (non-contact sensing capability), all-solution-processing fabrication, and, more importantly, good capability for simultaneous monitoring/mapping of both thermal and mechanical stimulations. In addition to proposing a new sensory mechanism, integration of the dual-functional e-skin with a soft robotic gripper for object manipulation is demonstrated. The presented concise yet efficient sensing scheme for both thermosensation and mechanosensation opens up previously unexplored avenues for the future design of skin prosthetics, humanoid robotics, and wearable electronics.

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Biomimetic temperature-sensing layer for artificial skins

Abstract: Pectin films mimic the sensing mechanism of viper pit membranes to finely detect temperature changes.

Cited by 55 publications

References 34 publications

Design of Engineered Elastomeric Substrate for Stretchable Active Devices and Sensors

Design of Engineered Elastomeric Substrate for Stretchable Active Devices and Sensors

Using Artificial Skin Devices as Skin Replacements: Insights into Superficial Treatment

A Potentiometric Electronic Skin for Thermosensation and Mechanosensation

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