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We introduce a novel fabrication of a stretchable circuit based on a polydimethylsiloxane (PDMS) substrate for wireless posture measurement. To prevent the typical emergence of cracks attributed to thermal mismatch between the metal seed layer and the PDMS substrate, an intermittent process is proposed to deposit a metal seed layer directly on a PDMS substrate. Afterward, the resistance of the S-shape...
One-step, hydrothermal synthesized 3D sulfonated reduced graphene oxide hydrogel (S-RGOH) is employed to fabricate a chemical sensor with high sensitivity, good selectivity, fast response and reversibility toward several gases. Compared with unmodified RGOH counterparts, the 3D NaHSO3 functionalized S-RGOH sensor exhibits 61.3 and 58.9 times higher responses to NO2 and NH3 respectively. A low limit...
This paper presents the characterization of an energy harvester using a piezoelectric diaphragm as the vibration energy conversion microstructure. The diaphragm containing the spiral electrode operates in the d33 mode. The energy harvesting performance of the diaphragm was characterized. The optimal resistance load and the working frequency were characterized. The resonance tuning and the energy harvesting...
This work presents the design, fabrication, and characterization of an energy harvester using a piezoelectric freestanding bulk diaphragm as the sensing element. The diaphragm containing the spiral electrode operates in d33 mode, which is different from the commonly used d31 mode diaphragm. The polarization in the diaphragm has a complex distribution that follows to the poling field induced by the...
The paper presents the design, fabrication and experimental results of a liquid crystal polymer (LCP) membrane-based pressure sensor array for underwater sensing applications. An artificial lateral-line has been developed, mimicking the features of the functions of the superficial neuromast in a fish. A simple, low cost and robust sensor has been proposed for harsh underwater environment applications...
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