Dynamic competitive strains enabled self-supporting Janus nanostructured films for high-performance airflow perception

Zhou, Wei; Xiao, Peng; Zhang, Chang; Yang, Qing; Chen, Tao

doi:10.1039/d2mh01482c

Cited by 5 publications

(7 citation statements)

References 36 publications

(43 reference statements)

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“…55,56 Recent examples have demonstrated great progress, by drawing inspirations from nature to engineer an artificial spider web for detecting subtle air vibrations. 53 The proposed airflow sensor achieved both ultralow detection limits and wide sensing ranges (Figure 3F). Also, this artificial system was delicately designed to efficiently distinguish the position and intensity of the applied airflow to enable effective noncontact manipulations.…”

Section: What To Detect By Touchless Probing?mentioning

confidence: 93%

Section: What To Detect By Touchless Probing?mentioning

confidence: 99%

“…Touchless devices are also widely utilized to detect air vibrations, no matter from mechanical stimuli or acoustic propagation. ,− Airflow sensors have shown great potentials in aerospace, weather forecasting, and biomedical engineering fields. , Recent examples have demonstrated great progress, by drawing inspirations from nature to engineer an artificial spider web for detecting subtle air vibrations . The proposed airflow sensor achieved both ultralow detection limits and wide sensing ranges (Figure F).…”

Section: What To Detect By Touchless Probing?mentioning

confidence: 99%

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Touchless Artificial Perception beyond Fingertip Probing

Wang,

Wang

2023

ACS Nano

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Touchless perception technology allows us to acquire information beyond the contact interfaces, making it ideal for scenarios where physical engagements are not possible. Unlike tactile devices, which have so far achieved impressive results, touchless strategies are fascinating yet underdeveloped. We envisage that touchless technologies could be powerful supplements to current haptics. In this Perspective, we include emerging touchless electronics, aiming to provide a broader and comprehensive picture toward artificial perceptual realm. We overview popular touchless protocols, sketch what could be detected by touchless probing, and summarize their latest spectacular achievements. In addition, we present the promises and challenges posed by touchless technologies and discuss possible directions for their future deployments.

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Section: What To Detect By Touchless Probing?mentioning

confidence: 93%

Section: What To Detect By Touchless Probing?mentioning

confidence: 99%

Section: What To Detect By Touchless Probing?mentioning

confidence: 99%

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Touchless Artificial Perception beyond Fingertip Probing

Wang,

Wang

2023

ACS Nano

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“…j) Comparison of limit of detection and response time between the CNTF-PPPS-1 airflow sensor and airflow sensors reported in references. [31,[37][38][39][40]26,[41][42][43][44][45] (Note: The negative sign in (R-R 0 )/R 0 value represents only the direction of resistance change, while negative sign indicates the decrease of resistance) the surface of CNTF-PPPS-1, water droplets bounced back and separated from the surface immediately. The information above articulates the macroscopic phenomena of the movement of water droplets on the surface of CNTF and CNTF-PPPS-1.…”

Section: Airflow Sensing Characteristics and Mechanismsmentioning

confidence: 99%

“…i) Sensing curve of 600 times of airflow on/off switch cycles measured by the CNTF-PPPS-1 sensor at a airflow velocity of 2 m s −1 , 𝛼 = 90°. j) Comparison of limit of detection and response time between the CNTF-PPPS-1 airflow sensor and airflow sensors reported in references [31,[37][38][39][40]26,[41][42][43][44][45]. (Note: The negative sign in (R-R 0 )/R 0 value represents only the direction of resistance change, while negative sign indicates the decrease of resistance)…”

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confidence: 99%

A Robust Bridge‐Type Airflow Sensor Based on Flexible Superhydrophobic Carbon Nanotube Fiber Thin Films

Qi,

Chen,

Yong

et al. 2023

Adv Materials Inter

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Despite a great deal of research about airflow sensors by far, it is still hard to maintain ultra‐low limit of detection, short response, and recovery time under humid and rainy environment, which compromises its practical applications. Herein, a robust bridge‐type airflow sensor base on flexible superhydrophobic carbon nanotube fiber thin films is developed, which can not only own remarkable sensitive properties with ultra‐low limit of detection, fast response, and rapid recovery, but also exclude the influence of moisture or water drops in real applications. Both response time and recovery time are reduced compared with that of the previously reported flexible carbon‐based airflow sensors. Particularly, recovery time is reduced by ≈2/3. Meanwhile, the superhydrophobic structure renders normal functioning of the sensor in severe environment of high humidity or even in the rain, so that the influence of moisture and raindrops can be excluded, a property deficient in the previously reported airflow sensors. Not only can the sensor detect ambient airflow sensitively, but it also exhibits outstanding performance in respiratory health monitoring. Hence, the novel sensor designed in this work realizes operation in the environment of high humidity and rain, which tremendously uplifts the applicability of flexible sensors.

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A Suspended, 3D Morphing Sensory System for Robots to Feel and Protect

Zhou,

Yu,

Xiao

et al. 2024

Advanced Materials

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Artificial sensory systems with synergistic touch and pain perception hold substantial promise for environment interaction and human‐robot communication. However, the realization of biological skin‐like functional integration of sensors with sensitive touch and pain perception still remains a challenge. Here, we propose a concept of suspended electronic skins enabling three‐dimensional deformation‐mechanical contact interactions for achieving synergetic ultra‐sensitive touch and adjustable pain perception. The suspended sensory system can sensitively capture tiny touch stimuli as low as 0.02 Pa and actively perceive pain response with reliable 5200 cycles via 3D deformation and mechanical contact mechanism, respectively. Based on the touch‐pain effect, a visualized feedback demo with miniaturized sensor arrays on artificial fingers is rationally designed to give a pain perception mapping on sharp surfaces. Furthermore, we show the capability of the suspended electronic skin serving as a safe human‐robot communication interface from active and passive view through a feedback control system, demonstrating potential in bionic electronics and intelligent robotics.This article is protected by copyright. All rights reserved

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Dynamic competitive strains enabled self-supporting Janus nanostructured films for high-performance airflow perception

Abstract: Recently piezoresistive airflow sensing systems have show extensive potential applications in aerospace, weather forecasting, mineral enterprise, and wearable electronics. However, the achievement of both ultralow detection limit and broad monitoring...

Cited by 5 publications

References 36 publications

Touchless Artificial Perception beyond Fingertip Probing

Touchless Artificial Perception beyond Fingertip Probing

A Robust Bridge‐Type Airflow Sensor Based on Flexible Superhydrophobic Carbon Nanotube Fiber Thin Films

A Suspended, 3D Morphing Sensory System for Robots to Feel and Protect

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