Microstructured Polyfluoroacrylate Elastomeric Dielectric Layer for Highly Stretchable Wide-Range Capacitive Pressure Sensors

Chen, Yutong; Huang, Zhenkai; Hu, Faqi; Peng, Jianping; Huang, Tianrui; Liu, Xiang; Luo, Chuan; Xu, Liguo; Yue, Kan

doi:10.1021/acsami.3c14064

Cited by 4 publications

(1 citation statement)

References 60 publications

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“…Despite the existence of previous studies on fluorinated CPCs, including surface modifications with fluorine and CIS units featuring a fluorinated shell, ,, there is an urgent need for comprehensive research on fluorinated photonic crystals encompassing the formulation of CIS particles, optical properties, wettability, strength, stability under various conditions, and potential applications. In addition, because of the limited solubility, poor film-forming property, and high glass transition temperature ( T g ) of the poly(fluoroalkyl acrylate), modifications with nonfluorinated acrylate monomer are needed.…”

Section: Introductionmentioning

confidence: 99%

Robust and Durable Photonic Crystal with Liquid-Repellent Property for Self-Cleaning Coatings and Structural Colored Textiles

Bi,

Tang,

Tian

et al. 2024

ACS Appl. Mater. Interfaces

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Photonic crystal coatings with unique structural colors and self-cleaning properties have been providing an efficient way for substrate coloration. However, the enhancement of the robustness and durability of structural colored coatings to meet the requirements in diverse environments remains a challenging task. Here, to realize the application of photonic crystal films under various kinds of conditions, we present a poly(fluoroalkyl acrylate)-based colloidal photonic crystal (fCPC) coating. Fluorinated core−interlayer−shell (FCIS) colloidal particles of polystyrene (PS) core, poly(methyl methacrylate) (PMMA) interlayer, and poly(fluoroalkyl acrylate-ethyl acrylate-butyl acrylate) (P(FA-EA-BA)) shell copolymers have been first prepared by a stepwise emulsion polymerization. fCPCs with self-supporting property, reprocessing ability, friction resistance, as well as excellent wettability and liquid-repellent properties are successfully obtained via the bending-induced ordering technique (BIOT). When applied in antifouling applications, the fCPC film exhibits resistance against various oil and inorganic liquids. Furthermore, the fCPC coatings demonstrate their durability under outdoor conditions by maintaining stable color appearances during rainy and sunny conditions. Additionally, an electronic product adhered with the fCPC coatings is presented, which exhibits a surface that remains clean even after prolonged usage in comparison to the conventional CPC coating. Structural colored textiles with enhanced stability and functionalized liquid-repellent properties are achieved through a one-step process using FCIS particles. Therefore, the developed self-cleaning and comprehensive fCPC coatings capable of withstanding diverse conditions may open up new avenues for the advancement of structural coloration in decoration, vehicle, textile, and building.

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Section: Introductionmentioning

confidence: 99%

Robust and Durable Photonic Crystal with Liquid-Repellent Property for Self-Cleaning Coatings and Structural Colored Textiles

Bi,

Tang,

Tian

et al. 2024

ACS Appl. Mater. Interfaces

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A high performance capacitive flexible pressure sensor based on three-dimensional porous rGO/PDMS composite

Zhang,

Sun

et al. 2024

J Mater Sci: Mater Electron

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Microstructured Self-Healing Flexible Tactile Sensors Inspired by Bamboo Leaves

Sun,

Fang,

Sima

et al. 2024

ACS Appl. Mater. Interfaces

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Wearable electronic devices with multifunctions such as flexible, integrated, and self-powered play a crucial role in the fields of health monitoring, motion monitoring, and human−computer interaction. However, their core basic components, flexible pressure sensors, face challenges including poor long-term stability and insufficient real-time sensing accuracy. In order to solve the challenges of long-term, stable, and accurate sensing of the sensor, this paper prepares polydimethylsiloxane (SHPDMS) with intrinsic self-healing property and designs a high-sensitivity self-healing capacitive flexible pressure sensor with dual microstructures (grating microstructured electrodes and microporous dielectric layer) as the substrate based on SHPDMS. Specifically speaking, the self-healing of the sensor under mild conditions was realized by introducing reversible imine bonds with low bonding energy into the polydimethylsiloxane (PDMS) flexible substrate, which solved the problem of the material's longterm service durability. A grating-like microstructure was introduced into the flexible electrode by using a spotted bamboo taro leaf as a template, and a dual microstructure sensor was constructed by combining it with a microporous dielectric layer doped with single-walled carbon nanotubes. This way reduces the elastic modulus of the dielectric layer, improves the dielectric constant of the sensor under loading, and thus significantly improves the sensor's sensitivity and extends the measurement accuracy in a low-stress range. The prepared self-healing flexible sensor achieves a sensitivity of 3.6 kPa −1 , a minimum detection limit of 5 Pa, a response recovery time of less than 80 ms, and stability over 5000 cycles, which exceeds most previously reported silicone rubber-based capacitive flexible sensors.

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Microstructured Polyfluoroacrylate Elastomeric Dielectric Layer for Highly Stretchable Wide-Range Capacitive Pressure Sensors

Cited by 4 publications

References 60 publications

Robust and Durable Photonic Crystal with Liquid-Repellent Property for Self-Cleaning Coatings and Structural Colored Textiles

Robust and Durable Photonic Crystal with Liquid-Repellent Property for Self-Cleaning Coatings and Structural Colored Textiles

A high performance capacitive flexible pressure sensor based on three-dimensional porous rGO/PDMS composite

Microstructured Self-Healing Flexible Tactile Sensors Inspired by Bamboo Leaves

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