Crack-based and Hair-like Sensors Inspired from Arthropods: A Review

Zhang, Changchao; Zhang, Junqiu; Chen, Daobing; Meng, Xiancun; Liu, Linpeng; Wang, Kejun; Jiao, Zhibin; Sun, Tao; Wang, Dakai; Niu, Shichao; Han, Zhiwu; Ren, Luquan

doi:10.1007/s42235-020-0092-6

Cited by 20 publications

(30 citation statements)

References 139 publications

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“…Arthropods have evolved over a long period of time to have a sensitive sensory system [ 170 , 171 , 172 , 173 ]. Representatively, the spider slit organ consists of a roughly parallel fissure–shaped sensory lyriform organ for extremely sensitive monitoring of the vibrations of the spider web ( Figure 5 a) [ 174 ].…”

Section: Structural Designs For Flexible Sensory Systemsmentioning

confidence: 99%

Flexible Sensory Systems: Structural Approaches

et al. 2022

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Biology is characterized by smooth, elastic, and nonplanar surfaces; as a consequence, soft electronics that enable interfacing with nonplanar surfaces allow applications that could not be achieved with the rigid and integrated circuits that exist today. Here, we review the latest examples of technologies and methods that can replace elasticity through a structural approach; these approaches can modify mechanical properties, thereby improving performance, while maintaining the existing material integrity. Furthermore, an overview of the recent progress in wave/wrinkle, stretchable interconnect, origami/kirigami, crack, nano/micro, and textile structures is provided. Finally, potential applications and expected developments in soft electronics are discussed.

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Section: Structural Designs For Flexible Sensory Systemsmentioning

confidence: 99%

Flexible Sensory Systems: Structural Approaches

et al. 2022

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“…Exploiting novel approaches to achieve superior sensitivity-stretchability-cyclic stability synergy is of great importance for metal film-based flexible electronics. In spiders and scorpions, the majority of the slit sense organs close to leg joints are composed of triangular arrays with slits of gradient-changing length/depth and/or orientation (so-called lyriform organs, as illustrated in Figure 1a), 37 instead of isolated single slits or loose slits group with constant length. The hierarchical gradient configurations of slits serve to maximize the range of signal magnitude the organ can deal with.…”

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confidence: 99%

“…Typical mechano-electrical response curve of TGFs and its magnified plots in different strain ranges were shown in Figure b and Figure S14, respectively. We also compared the sensing performances of the TGFs-based SSSs with other metal-based SSSs reported in the literatures ,,,− ,− ,,− (Figure c). The TGFs-based SSSs exhibit a GF of 36 in the low-strain range (0–45%), which is comparable with those of metal films on structured substrates although much smaller than those of metal films (on flat substrates).…”

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confidence: 99%

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Topological Gradients for Metal Film-Based Strain Sensors

Zhu

Xia

et al. 2022

Nano Lett.

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Metal film-based stretchable strain sensors hold great promise for applications in various domains, which require superior sensitivity-stretchability-cyclic stability synergy. However, the sensitivitystretchability trade-off has been a long-standing dilemma and the metal filmbased strain sensors usually suffer from weak cyclic durability, both of which significantly limit their practical applications. Here, we propose an extremely facile, low-cost and spontaneous strategy that incorporates topological gradients in metal film-based strain sensors, composed of intrinsic (grain size and interface) and extrinsic (film thickness and wrinkle) microstructures. The topological gradient strain sensor exhibits an ultrawide stretchability of 100% while simultaneously maintaining a high sensitivity at an optimal topological gradient of 4.5, due to the topological gradientsinduced multistage film cracking. Additionally, it possesses a decent cyclic stability for >10 000 cycles between 0 and 40% strain enabled by the gradient-mixed metal/elastomer interfaces. It can monitor the full-range human activities from subtle pulse signals to vigorous joint movements.

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“…Wearable sensors are in high demand in various new application areas, including health screening, human-machine interfaces, soft robotics [66], and custom health monitoring [67][68][69][70]. Specifically, wearable strain sensors should be mechanically flexible for enabling conformal connection to a curved surface and high sensitivity, essential features for wearable electronics [71].…”

Section: Overview Of Smart Piezoresistive Textiles and Materials Used To Monitor Respiration Ratementioning

confidence: 99%

An Overview of Wearable Piezoresistive and Inertial Sensors for Respiration Rate Monitoring

et al. 2021

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The demand for wearable devices to measure respiratory activity is constantly growing, finding applications in a wide range of scenarios (e.g., clinical environments and workplaces, outdoors for monitoring sports activities, etc.). Particularly, the respiration rate (RR) is a vital parameter since it indicates serious illness (e.g., pneumonia, emphysema, pulmonary embolism, etc.). Therefore, several solutions have been presented in the scientific literature and on the market to make RR monitoring simple, accurate, reliable and noninvasive. Among the different transduction methods, the piezoresistive and inertial ones satisfactorily meet the requirements for smart wearable devices since unobtrusive, lightweight and easy to integrate. Hence, this review paper focuses on innovative wearable devices, detection strategies and algorithms that exploit piezoresistive or inertial sensors to monitor the breathing parameters. At first, this paper presents a comprehensive overview of innovative piezoresistive wearable devices for measuring user’s respiratory variables. Later, a survey of novel piezoresistive textiles to develop wearable devices for detecting breathing movements is reported. Afterwards, the state-of-art about wearable devices to monitor the respiratory parameters, based on inertial sensors (i.e., accelerometers and gyroscopes), is presented for detecting dysfunctions or pathologies in a non-invasive and accurate way. In this field, several processing tools are employed to extract the respiratory parameters from inertial data; therefore, an overview of algorithms and methods to determine the respiratory rate from acceleration data is provided. Finally, comparative analysis for all the covered topics are reported, providing useful insights to develop the next generation of wearable sensors for monitoring respiratory parameters.

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Crack-based and Hair-like Sensors Inspired from Arthropods: A Review

Cited by 20 publications

References 139 publications

Flexible Sensory Systems: Structural Approaches

Flexible Sensory Systems: Structural Approaches

Topological Gradients for Metal Film-Based Strain Sensors

An Overview of Wearable Piezoresistive and Inertial Sensors for Respiration Rate Monitoring

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