Smart mechano-hydro-dielectric coupled hybrid sponges for multifunctional sensors

•Novel mechano-hydro-dielectric coupled hybrid sponges are fabricated.•Both decoupled physical and chemical approaches are investigated.•Hybrid sponge shows enhanced sensitivity under two fields.•Smart hybrid sponges play as multi-functional sensors. [Display omitted] Smart mechano-hydro-dielectric...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2018-10, Vol.270, p.239-246
Main Authors: Wang, Yana, Zhang, Kai-Lun, Zhang, Bao-Xun, Ma, Chao-Jie, Song, Wei-Li, Hou, Zhi-Ling, Chen, Mingji
Format: Article
Language:English
Subjects:
Coupled modes
Dielectrics
Effective medium theory
Environmental conditions
Mechano-hydro-dielectric coupling
Multifunctional sensors
Organic chemistry
Physical-chemical coupling
Self healing materials
Sensors
Smart materials
Smart sensors
Smart sponge
Sponges
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Summary:•Novel mechano-hydro-dielectric coupled hybrid sponges are fabricated.•Both decoupled physical and chemical approaches are investigated.•Hybrid sponge shows enhanced sensitivity under two fields.•Smart hybrid sponges play as multi-functional sensors. [Display omitted] Smart mechano-hydro-dielectric coupled hybrid sponges are developed, which has highlighted a novel strategy for integrating physical and chemical approaches into a smart system. The results suggest both mechano-enhanced hydro-dielectric and hydro-enhanced mechano-dielectric properties in comparison with single mechano-dielectric and hydro-dielectric modes, allowing the as-fabricated smart sponges for utilizing in advanced multifunctional sensors. Since smart materials and structures that holds the capability of automatically conducting shape transformation or functional variation upon environmental condition changes are critical in developing advanced components for intelligent devices and apparatus, such as sensors, actuators, self-recovery and self-healing systems. Generally, either physical or chemical approach would be applied to meet the stimulus-response modes for realizing smart shape or functional changes. In the present contribution, novel mechano-hydro-dielectric coupled graphene oxide hybrid sponges are proposed to integrate the physical and chemical approach into a smart material. Based on investigation on the decoupled features from mechano-dielectric (physical approach) and hydro-dielectric (chemical approach) modes, the mechano-hydro-dielectric coupled features suggest that integration of physical and chemical approaches would substantially promote the change ratios of each single approach, which implies both hydro-enhanced mechano-dielectric and mechano-enhanced hydro-dielectric coupled stimulus-response modes. According to the mechanism discussion from effective medium theory, the results from indicate that such mechano-hydro-dielectric coupled hybrid sponges promise a great stage to establish multifunctional sensors (both mechanical and humidity sensors) based on various physical-chemical coupled modes.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2018.05.023