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Microdispensing system via the contacting method.

Andi Sudjana Putra1, Qian Qian Jiang, Kok Kiong Tan

  • 1Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117576, Singapore.

ISA Transactions
|May 22, 2010
PubMed
Summary

This study introduces a low-cost microdispensing system using a contacting method and adhesion forces for precise droplet delivery. A piezoelectric actuator and PID controller ensure accurate dispensing and trajectory tracking.

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Area of Science:

  • Engineering
  • Materials Science
  • Fluid Dynamics

Background:

  • Traditional microdispensing systems can be expensive to produce and maintain.
  • Existing methods may lack precision or require complex setups.

Purpose of the Study:

  • To develop a cost-effective microdispensing system.
  • To achieve high-precision liquid droplet dispensing using a novel contacting method.

Main Methods:

  • A contacting microdispensing method utilizing liquid adhesion forces.
  • Integration of a piezoelectric actuator for high-precision movement.
  • Implementation of a Proportional-Integral-Derivative (PID) controller for process control and trajectory tracking.

Main Results:

  • Successful development of a microdispensing system with reduced production and maintenance costs.
  • Demonstrated precise droplet dispensing through controlled adhesion force utilization.
  • Validated system performance via PID controller for dispensing and trajectory control.

Conclusions:

  • The developed contacting microdispensing system offers a viable, low-cost alternative for precise liquid handling.
  • The use of piezoelectric actuators and PID control enables accurate and reliable microdispensing applications.