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Issue 10, 2015
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Water's tensile strength measured using an optofluidic chip

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Abstract

In this paper, for the first time, the tensile strength of water is directly measured using an optofluidic chip based on the displacement of air–water interface deformation with homogeneous nucleation. When water in a microchannel is stretched dynamically via laser-induced shock reflection at the air–water interface, the shock pressures are determined by measuring the displacements of the deformed interface. Observation of the vapor bubbles is used as a probe to identify the cavitation threshold with a critical distance, and the tensile strength of water at 20 °C is measured to be −33.3 ± 2.8 MPa. This method can be extended to investigate the tensile strength of other soft materials such as glycerol, which is measured to be −59.8 ± 10.7 MPa at 20 °C.

Graphical abstract: Water's tensile strength measured using an optofluidic chip

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Publication details

The article was received on 14 Jan 2015, accepted on 18 Mar 2015 and first published on 18 Mar 2015


Article type: Paper
DOI: 10.1039/C5LC00048C
Lab Chip, 2015,15, 2158-2161
  • Open access: Creative Commons BY-NC license
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    Water's tensile strength measured using an optofluidic chip

    Z. G. Li, S. Xiong, L. K. Chin, K. Ando, J. B. Zhang and A. Q. Liu, Lab Chip, 2015, 15, 2158
    DOI: 10.1039/C5LC00048C

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