A unified model for determining fracture strain of metal films on flexible substrates

Wu, Xuping; Luo, Xue-Mei; Chen, Honglei; Zou, Ji-Peng; Zhang, Guangping

doi:10.1016/j.jmst.2020.03.043

Journal of Materials Science & Technology

2020

DOI: 10.1016/j.jmst.2020.03.043

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A unified model for determining fracture strain of metal films on flexible substrates

Xuping Wu

Xue-Mei Luo

Honglei Chen

et al.

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Cited by 4 publications

(1 citation statement)

References 37 publications

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“…According to the classification of membrane materials, the synthetic membrane mainly includes inorganic membrane, organic membrane and organic-inorganic composite membrane. The inorganic membrane mainly includes ceramic film, 5 zeolite film 6 and metal film, 7 etc. Its features are strong mechanical strength, good corrosion resistance and thermal stability, but the inorganic membrane material is brittle, small loading area and expensive production cost, which limit its application.…”

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confidence: 99%

High Proton Conduction Behavior of a Water-Stable Cadmium Organic Framework and Its Polymer Composite Membranes

Wang

Qiao

et al. 2021

J. Electrochem. Soc.

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A water-stable metal-organic framework material of [Cd2 (pbdc)(H2O)3](1) has been synthesized based on H4pbdc (H4pbdc = 5-phosphonobenzene-1,3-dicarboxylic acid) ligands and Cd2+ ions. The Cd2+ ions are interacted with phosphonate and carboxylate groups to form infinitely extending one-dimensional chains, which are then bridged by pbdc ligands to generate a three-dimensional structure. AC impedance study found that the proton conductivity of compound 1 is 2.32 × 10−4 S·cm−1 at 333 K and 98% RH. Many MOF-polymer composite materials have excellent properties (such as heat resistance, high proton conductivity, etc.) and can be used in fuel cells and other fields. Thus, compound 1 was added to the CS matrix to prepare a series of composite membrane 1@CS-X (X = 1%, 3%, 5%, and 7% wt), which have good thermal stability and high proton conductivity. Under the same conditions, the effects of the 1@CS-X composite membranes on proton conduction are better than that of 1, which is caused by the hydrogen bond network constructed between CS and 1, and that provides a continuous channel for proton transfer. Strikingly, the proton conduction value of 1@CS-3 reached 1.10 × 10−2 S·cm −1 353 K and 98% RH, which is much better than many recently reported MOF-polymer composites.

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mentioning

confidence: 99%

High Proton Conduction Behavior of a Water-Stable Cadmium Organic Framework and Its Polymer Composite Membranes

Wang

Qiao

et al. 2021

J. Electrochem. Soc.

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Ultrasensitive Strain Sensors Based on Cu‐Al Alloy Films with Voided Cluster Boundaries

Chen

Luo

et al. 2021

Adv Materials Technologies

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Stimulated by the requirement for wearable electronics, crack‐based strain sensors made from polymer‐supported metal films have been reported as a prospective structure for detecting subtle deformation with ultrahigh sensitivity and excellent flexibility. However, the regulation of crack preparation remains a challenge and the use of noble metals retards the large‐scale promotion toward practical application. Here, a cost‐effective strain sensor with ultrahigh strain sensitivity under small strains (ε) is designed based on the submicron to nanoscale voided clusters in Cu‐Al alloy films. The formation of channel cracks in the film is manipulated by regulating the intrinsic microstructure of the film, and the corresponding mechanism is discussed in detail. The strain sensor developed from the cracked Cu‐Al film exhibits ultrahigh gauge factors as high as 584 (0% < ε < 0.5%), 10219 (0.5% < ε < 0.9%), 43152 (0.9% < ε < 1.75%) which is among the highest in reported values. Furthermore, the practical application of the developed sensor in wearable electronics and detection of small deformation is demonstrated. This work provides a novel approach to optimize the sensing performance of flexible strain sensors.

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Size effect on stretchability of Cu films on wrinkled polydimethylsiloxane substrates

Zhang

Zhu

et al. 2022

Thin Solid Films

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A unified model for determining fracture strain of metal films on flexible substrates

Cited by 4 publications

References 37 publications

High Proton Conduction Behavior of a Water-Stable Cadmium Organic Framework and Its Polymer Composite Membranes

High Proton Conduction Behavior of a Water-Stable Cadmium Organic Framework and Its Polymer Composite Membranes

Ultrasensitive Strain Sensors Based on Cu‐Al Alloy Films with Voided Cluster Boundaries

Size effect on stretchability of Cu films on wrinkled polydimethylsiloxane substrates

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