Highly-sensitive linear tactile array for continuously monitoring blood pulse waves
| Autor: | Chia-Ming Chang, Yao-Joe Yang, Tzung-Dau Wang, Kuan-Hua Huang, Fu-Wei Lee |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polydimethylsiloxane Pulse (signal processing) Acoustics 0206 medical engineering Tactile array Metals and Alloys 02 engineering and technology Repeatability 021001 nanoscience & nanotechnology Condensed Matter Physics 020601 biomedical engineering Piezoresistive effect Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Pulse wave Sensitivity (control systems) Electrical and Electronic Engineering 0210 nano-technology Instrumentation Quantum tunnelling |
| Zdroj: | Sensors and Actuators A: Physical. 280:261-270 |
| ISSN: | 0924-4247 |
| DOI: | 10.1016/j.sna.2018.07.045 |
| Popis: | This work presents the development of a tactile sensing array for continuous blood pulse wave monitoring. The polymer-based sensing device consists of two polydimethylsiloxane layers, which were patterned with microdomes transferred from nylon membrane filters. The microdomes form interlocked structures, which enable the tunneling piezoresistive effect and provide ultra-high sensitivity. The sensing array was designed in an 8 × 1 linear configuration, and the length-width ratio of each sensing element is about 8. This design facilitates the acquisition of blood pulse wave signals on the skin above a radial artery. The measured relationship between resistance and pressure force indicates that the sensor exhibits very high sensitivity (−6.08 kPa−1). The array sensing results revealed that crosstalk between the sensing elements was nominal. In addition, the repeatability testing also showed that the performance of the sensor was quite stable after 10,000 loading-unloading cycles. |
| Databáze: | OpenAIRE |
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