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This paper suggests development of a flexible, lightweight, and ultra-sensitive piezoresistive flow sensor based on vertical graphene nanosheets (VGNs) with a mazelike structure. The sensor was thoroughly characterized for steady-state and oscillatory water flow monitoring applications. The results demonstrated a high sensitivity (103.91 mV (mm/s)(-1)) and a very low-velocity detection threshold (1.127 mm s(-1)) in steady-state flow monitoring. As one of many potential applications, we demonstrated that the proposed VGNs/PDMS flow sensor can closely mimic the vestibular hair cell sensors housed inside the semicircular canals (SCCs). As a proof of concept, magnetic resonance imaging of the human inner ear was conducted to measure the dimensions of the SCCs and to develop a 3D printed lateral semicircular canal (LSCC). The sensor was embedded into the artificial LSCC and tested for various physiological movements. The obtained results indicate that the flow sensor is able to distinguish minute changes in the rotational axis physical geometry, frequency, and amplitude. The success of this study paves the way for extending this technology not only to vestibular organ prosthesis but also to other applications such as blood/urine flow monitoring, intravenous therapy (IV), water leakage monitoring, and unmanned underwater robots through incorporation of the appropriate packaging of devices.
|Number of pages||18|
|Early online date||11 May 2020|
|Publication status||Published - Dec 2020|
Bibliographical noteCopyright the Author(s) 2020. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
- Vertical graphene nanosheets
- Artificial vestibular system
- Bioinspired sensors
- Piezoresistive sensors
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- 2 Finished
Ear-on-a-Chip: Nanosensors in Artificial Cochlea for Natural Hearing
1/01/18 → 31/12/20
ARC_DECRA: Stretchable Strain Sensors Based on 3D-structured Nano-Carbon
1/05/17 → 30/10/20