A Fully Printed Flexible Sensor Sheet for Simultaneous Proximity–Pressure–Temperature Detection (Adv. Mater. Technol. 11/2021)

Luo, Huayu; Pang, Gaoyang; Xu, Kaichen; Ye, Zhiqiu; Yang, Huayong; Yang, Geng

doi:10.1002/admt.202170065

Cited by 8 publications

(9 citation statements)

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“…Integrating various sensing components into a system is an effective technology but suffers from the bulky structure and complex fabrication. [ 30–33 ] Recently, exploring a single multimodal sensor that can detect multiple stimuli has attracted huge attention due to the miniature structure, simple fabrication, and detection of various information at the same spot. [ 20,24 ] However, signal interference hinders multimodal sensors from identifying various stimuli, which requires complex algorithms and hardware to decouple.…”

Section: Introductionmentioning

confidence: 99%

Flexible Optoelectronic Multimodal Proximity/Pressure/Temperature Sensors with Low Signal Interference

Wang

et al. 2023

Advanced Materials

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Multimodal tactile sensors are a crucial part of intelligent human‐machine interaction and collaboration. Simultaneous detection of proximity, pressure, and temperature on a single sensor can greatly promote the safety, interactivity and compactness of interaction systems. However, severe signal interference and complex decoupling algorithm hinder the actual applications. Here, we report a flexible optoelectronic multimodal sensor capable of detecting and decoupling proximity/pressure/temperature by integrating a light waveguide and an interdigital electrode into a compact fibrous sensor. Negligible signal interference is realized by combining heterogeneous sensing mechanisms of optics and electronics, which encodes proximity into capacitance, pressure into light intensity and temperature into resistance. The sensor exhibited a large sensing distance of 225 mm with fast responses for proximity detection, a pressure sensitivity of 0.42 N−1, and a temperature sensitivity of 7%/°C. As a proof of concept, the doll equipped with the sensor can accurately discriminate and detect various stimuli, thus achieving safe and immersive interactions with the user. This work opens up promising paths for self‐decoupled multimodal sensors and related human/machine/environment interaction applications.This article is protected by copyright. All rights reserved

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Section: Introductionmentioning

confidence: 99%

Flexible Optoelectronic Multimodal Proximity/Pressure/Temperature Sensors with Low Signal Interference

Wang

et al. 2023

Advanced Materials

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“…In this regard, pressure sensors, which convert a mechanical force to an electrical signal, have been developed significantly and have been utilized in diverse applications, including sports and fitness, [ 1 ] health monitoring and assessment, [ 2 ] clinical diagnoses, [ 3 ] and intelligent robots. [ 4 ] Currently, conventional pressure sensors are piezoresistive, [ 5 ] capacitive, [ 6 ] and piezoelectric. [ 7 ] Studies show that with the expanding application range of sensors, they are required to improve output performance while also meeting the needs of manufacturing and engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Flexible Pressure Sensors Based on MXene/PDMS Porous Films

Wang

Li³

et al. 2023

Adv Materials Technologies

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With the increasing demand for smart devices requires sensors with portability and wearability, high performance and durability,and low cost. In this work, an MXene/PDMS flexible self‐powered porous triboelectric pressure sensor (PTPS) is proposed based on the principles of triboelectrification and electrostatic induction. The film‐forming performance of the sensor is investigated for different MXene hydrosol mass ratios, and three modes of operation and practical performance of the PTPS are studied. The sensor converts the applied mechanical force into electrical signals, and the applied load in the range of 0.15–2.50 N and 2.50–5.15 N has a linear correlation with the output voltage. The obtained results show that the sensor sensitivity in these two ranges is 659.37 and 467.74 mV N−1, respectively. The response time of the proposed PTPS is less than 30 ms, and it can be applied to detect signals with a frequency up to 20 Hz. The voltage output remains stable after 6000 contact–separation test cycles. Moreover, hand gesture recognition, water drop sensing, mouse click, and keyboard press sensing are studied in wearable and non‐wearable scenarios. Based on the obtained results, it is concluded that the proposed PTPS has a promising performance in the field of self‐powered human motion sensing electronics.

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“…Previous research about decoupling multiple stimuli generally focuses on integrating multiple single‐modal sensors into a multimodal sensor in a multi‐layer stacking manner. [ 41–43 ] It also includes the addition of thermoelectric or pyroelectric materials, [ 44,45 ] which are able to generate a permanent or instant voltage that is only affected by temperature. The stacking strategy is able to decouple the two variables, but the complex structure, sophisticated preparation, and strict constraints on the selection of materials limit its up‐scale application.…”

Section: Introductionmentioning

confidence: 99%

A Highly Sensitive Iontronic Bimodal Sensor with Pressure‐Temperature Discriminability for Robot Skin

Yang,

Ye,

et al. 2023

Adv Materials Technologies

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Iontronic sensors, with the electrical double layer effect at the iontronic film /electrode interface as well as the temperature‐sensitive characteristic of the iontronic film, demonstrate the potential to be robot skin with pressure‐temperature perception. Herein, a highly sensitive iontronic bimodal sensor (IBS) with pressure‐temperature discriminability for robot skin is reported. With the elaborate design of the structure, especially the reasonable arrangement of electrodes, the resistance‐capacitance dual‐measurement modes on the iontronic film are realized. Based on the temperature‐sensitive resistance of the iontronic film, together with a pressure‐sensitive normalized variable of the capacitance of the IBS, a pressure‐temperature decoupling strategy is proposed, terminating in the maximum temperature error of 1.6% in 20–80 °C and the maximum force error of 5.9% in 3–10 N. Moreover, the hierarchically compressible microstructure of the iontronic film, with slender protrusions and stubby protrusions, is readily prepared, empowering the IBS with a pressure sensitivity of 25.9 kPa−1 and a broad pressure range up to 796 kPa. The IBS and the 5 × 5 IBS array, function as the skin for a robot in the scenarios of temperature sensing, writing calligraphy, and object manipulation, manifesting gigantic potential in human‐robot interaction.

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A Fully Printed Flexible Sensor Sheet for Simultaneous Proximity–Pressure–Temperature Detection (Adv. Mater. Technol. 11/2021)

Cited by 8 publications

References 0 publications

Flexible Optoelectronic Multimodal Proximity/Pressure/Temperature Sensors with Low Signal Interference

Flexible Optoelectronic Multimodal Proximity/Pressure/Temperature Sensors with Low Signal Interference

Flexible Pressure Sensors Based on MXene/PDMS Porous Films

A Highly Sensitive Iontronic Bimodal Sensor with Pressure‐Temperature Discriminability for Robot Skin

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