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Related Experiment Video

Updated: Aug 22, 2025

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A Polyimide Film-Based Simple Force Plate for Measuring the Body Mass of Tiny Insects.

Kenichiro Shimazaki1, Takumi Sugimoto1, Hirofumi Toda2

  • 1Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, Yokohama 223-8522, Japan.

Sensors (Basel, Switzerland)
|November 11, 2022
PubMed
Summary

Researchers developed a high-resolution force plate to measure the mass of tiny insect parts. This innovation accurately weighed fruit fly wings, revealing they constitute about 0.4% of body mass, aiding micromachine design.

Keywords:
body mass measurementforce platefruit flylaser processing

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Area of Science:

  • Biomechanical Engineering
  • Insect Locomotion
  • Micromachine Design

Background:

  • Insects' complex locomotion, like flight, offers design principles for micro-robots.
  • Accurate modeling of insect parts, especially lightweight wings, is crucial for simulating flight dynamics.
  • Measuring the mass of small insect wings is challenging due to their size and low weight.

Purpose of the Study:

  • To develop a high-resolution, simple force plate for measuring the mass of individual insect parts.
  • To enable accurate mass measurement of small, delicate biological structures.
  • To provide essential data for biomechanical modeling of insect flight.

Main Methods:

  • Fabrication of a novel force plate using polyimide film spiral springs and a laser displacement meter.
  • Utilizing a sub-N/m spring constant for high sensitivity and precision.
  • Demonstrating the device by measuring the mass of fruit fly wings.

Main Results:

  • The force plate achieved a resolution of less than 2 µg.
  • The fabrication process is rapid, taking only a few minutes.
  • Fruit fly wings were found to constitute approximately 0.4% of the insect's total body mass.

Conclusions:

  • The developed force plate is a viable tool for precise mass measurement of small biological components.
  • This technology can significantly advance the accuracy of insect locomotion simulations.
  • Findings contribute to the design and development of bio-inspired micromachines.