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- W2806859066 abstract "Nanomaterials with low-dimensional morphology have been explored for enhancing the performance of strain sensors, but it remains difficult to achieve high stretchability and sensitivity simultaneously. In this work, a composite structure strain sensor based on nanomaterials and conductive liquid is designed, demonstrated, and engineered. The nanowire-microfluidic hybrid (NMH) strain sensor responds to multiscale strains from 4% to over 400%, with a high sensitivity and durability under small strain. Metal nanowires and carbon nanotubes are used to fabricate the NMH strain sensors, which simultaneously exhibit record-high average gauge factors and stretchability, far better than the conventional nanowire devices. Quantitative modeling of the electrical characteristics reveals that the effective conductivity percolation through the hybrid structures is the key to achieving high gauge factors for multiscale sensing. The sensors can operate at low voltages and are capable of responding to various mechanical deformations. When fixed on human skin, the sensors can monitor large-scale deformations (skeleton motion) and small-scale deformations (facial expressions and pulses). The sensors are also employed in multichannel, interactive electronic system for wireless control of robotics. Such demonstrations indicate the potential of the sensors as wearable detectors for human motion or as bionic ligaments in soft robotics. By combining metal nanowires and conductive polymers, high-performance stretchable nanowire-microfluidic strain sensors are realized. A team lead by Chuan Liu from the School of Electronics and Information Technology at Sun Yat-Sen University developed a hybrid strain sensor consisting of brittle metal nanowires and conductive polymers. These robust nanowire-microfluidic strain sensors are sensitive to multiscale strains––from 4% to over 400%––and show record-high gauge factor, a figure-of-merit that quantifies the level of sensitivity. The hybrid strain sensor’s high performance is made possible by the electric percolation pathways formed between the parallel nanowire network and the microfluidic channels. The combination of high stretchability and high sensitivity over a large strain range enables the device to be suitable for multiscale sensing. Liu and coworkers demonstrate the applicability of their nanowire-microfluidic strain sensors to human motion detection and human–machine interactive systems." @default.
- W2806859066 created "2018-06-13" @default.
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- W2806859066 date "2018-06-04" @default.
- W2806859066 modified "2023-10-15" @default.
- W2806859066 title "Multiscale nanowire-microfluidic hybrid strain sensors with high sensitivity and stretchability" @default.
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- W2806859066 doi "https://doi.org/10.1038/s41528-018-0029-x" @default.
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