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Robust Arduino controlled spin coater using a novel and simple gravity chuck design.

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We developed a low-cost, open-source spin coater for thin film fabrication. Its novel chuck design with interchangeable masks offers a reliable and versatile solution, particularly for institutions with limited budgets.

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Area of Science:

  • Materials Science and Engineering
  • Open-Source Hardware Development

Background:

  • Spin coating is a critical technique for thin film fabrication.
  • Existing spin coaters (proprietary and open-source) present challenges in reliability, usability, and cost.
  • Commercial chuck replacements can be prohibitively expensive.

Purpose of the Study:

  • To present a novel, user-friendly, open-source gravity-chuck spin coater.
  • To achieve minimal points of failure and a low material cost (~$100 USD).
  • To offer a flexible and cost-effective solution for thin film deposition.

Main Methods:

  • Designed and constructed an open-source gravity-chuck spin coater.
  • Incorporated a unique chuck design featuring interchangeable brass plate sample masks.
  • Utilized basic skills and common hand tools for mask fabrication.

Main Results:

  • The developed spin coater has a material cost of approximately $100 USD (1500 ZAR).
  • The interchangeable mask system allows for sample-size specificity and easy customization.
  • The design minimizes points of failure, enhancing reliability.

Conclusions:

  • This open-source spin coater provides a highly reliable, cost-effective, and versatile alternative to commercial systems.
  • The design is particularly beneficial for institutions in developing countries or those with budget constraints.
  • It serves as a model for accessible hardware development in scientific research.