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Measuring the Switch Cost of Smartphone Use While Walking
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Contact angle measurement with a smartphone.

H Chen1, Jesus L Muros-Cobos1, A Amirfazli1

  • 1Department of Mechanical Engineering, York University, Toronto, Ontario M3J 1P3, Canada.

The Review of Scientific Instruments
|April 2, 2018
PubMed
Summary
This summary is machine-generated.

A new smartphone-based instrument simplifies contact angle measurement. This portable device offers accurate static and dynamic measurements, advancing surface science beyond traditional lab setups.

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Area of Science:

  • Materials Science
  • Surface Science
  • Analytical Chemistry

Background:

  • Contact angle measurement is crucial for characterizing surface properties.
  • Traditional instruments are often bulky, expensive, and require specialized setups.
  • There is a need for portable and accessible contact angle measurement tools.

Purpose of the Study:

  • To develop and validate a novel smartphone-based instrument for contact angle measurement.
  • To assess the accuracy and practicality of the developed instrument compared to conventional methods.
  • To demonstrate the potential of mobile technology in advancing surface analysis.

Main Methods:

  • Development of a smartphone-based contact angle measurement instrument.
  • Implementation of an automatic contact point detection algorithm.
  • Integration of Young-Laplace and polynomial fitting methods for calculation.
  • Validation using ideal synthetic drop profiles and experimental measurements.

Main Results:

  • The smartphone instrument achieved high accuracy (0.01%) with synthetic profiles.
  • Static and dynamic (advancing/receding) contact angles were measured accurately.
  • The developed system demonstrated comparable performance to traditional commercial instruments.
  • The instrument offers simplicity, compactness, and portability advantages.

Conclusions:

  • A functional and accurate smartphone-based contact angle measurement system has been successfully developed.
  • This innovation provides a portable and cost-effective alternative to traditional, bench-bound contact angle measurement setups.
  • The study highlights the significant potential of leveraging mobile devices for advanced scientific measurements in surface science.