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Updated: Aug 28, 2025

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor
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A disturbance suppression micro-Newton force sensor based on shadow method.

Yong Yang1, Meirong Zhao1, Dantong Li1

  • 1The State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, 300072, China.

ISA Transactions
|September 19, 2022
PubMed
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This study introduces a novel viscoelastic-polymer micro-force (VPMF) sensor that effectively measures tiny forces. Inspired by water striders, the VPMF sensor significantly reduces environmental disturbances for reliable micro-force detection.

Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Sensor Technology

Background:

  • Micro-force measurement precision is limited by sensor sensitivity and environmental disturbances.
  • Existing micro-force sensors often exhibit poor anti-disturbance capabilities, hindering reliable measurements in complex settings.

Purpose of the Study:

  • To propose a novel viscoelastic-polymer micro-force (VPMF) sensor utilizing a shadow-based method.
  • To enhance the anti-disturbance ability of micro-force sensors.
  • To enable reliable micro-force measurement in challenging environments.

Main Methods:

  • Development of a viscoelastic-polymer micro-force (VPMF) sensor.
  • Application of a shadow method inspired by water strider locomotion.
  • Characterization of sensor performance, including sensitivity, linearity, and disturbance rejection.
Keywords:
Disturbance suppressionMicro-force sensorShadow methodViscoelastic polymer

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Main Results:

  • The VPMF sensor demonstrated effective disturbance suppression with a high damping ratio of 0.22.
  • A proportional relationship was observed between shadow diameter change and applied force.
  • Achieved a sensitivity of 2.15 μN/pixel with excellent linear performance.
  • Reduced disturbance influence by approximately 96.35% compared to traditional cantilever sensors.

Conclusions:

  • The proposed VPMF sensor offers a robust solution for micro-force measurement.
  • The shadow method effectively mitigates environmental disturbances, enhancing measurement reliability.
  • The VPMF sensor is suitable for practical applications in complex industrial environments.