Mechanical Tester Driven by Surface Tension

Wang, Yan1,2; Shao, Biqi1; Song, Jia1; Hong, Wei3; Guo, Chuan Fei1

2024-03-25

10.1021/acs.nanolett.4c00702

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

The measurement of in-plane mechanical properties, such as Young's modulus and strength, of thin and stretchable materials has long been a challenge. Existing measurements, including wrinkle instability and nano indentation, are either indirect or destructive, and are inapplicable to meshes or porous materials, while the conventional tension test fails to measure the mechanical properties of nanoscale films. Here, we report a technique to test thin and stretchable films by loading a thin film afloat via differential surface tension and recording its deformation. We have demonstrated the method by measuring the Young's moduli of homogeneous films of soft materials including polydimethylsiloxane and Ecoflex and verified the results with known values. We further measured the strain distributions of meshes, both isotropic and anisotropic, which were otherwise nearly impossible to measure. The method proposed herein is expected to be generally applicable to many material systems that are thin, stretchable, and water-insoluble.

Marangoni effect surface tension Young'smodulus measurement free-standing film

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China["52203297","T2225017","52073138"] ; National Natural Science Foundation of China[2021B1212040001] ; Department of Science and Technology of Guangdong Province[KYTDPT20181011104007]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001190659700001

AMER CHEMICAL SOC

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Nanchang Univ, Sch Phys & Mat Sci, Dept Phys, Nanchang 330031, Jiangxi, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China

Wang, Yan,Shao, Biqi,Song, Jia,et al. Mechanical Tester Driven by Surface Tension[J]. NANO LETTERS,2024,24(13).

Wang, Yan,Shao, Biqi,Song, Jia,Hong, Wei,&Guo, Chuan Fei.(2024).Mechanical Tester Driven by Surface Tension.NANO LETTERS,24(13).

Wang, Yan,et al."Mechanical Tester Driven by Surface Tension".NANO LETTERS 24.13(2024).