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A Versatile Kit Based on Digital Microfluidics Droplet Actuation for Science Education
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Low-cost Arduino controlled dual-polarity high voltage power supply.

Eric J Davis1, Brian H Clowers2

  • 1Whitworth University, Department of Chemistry, 300 W Hawthorn Rd, Spokane, WA 99251, United States.

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Summary

This study introduces a low-cost high-voltage power supply for Ion Mobility Spectrometry (IMS). The system uses affordable modules controlled by an Arduino for precise voltage delivery, enhancing IMS accessibility.

Keywords:
Chemical InstrumentationHigh VoltageIon Mobility SpectrometryLaboratory InstrumentationPower Supply

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Area of Science:

  • Analytical Chemistry
  • Instrumentation Science

Background:

  • Ion Mobility Spectrometry (IMS) requires high voltage (HV) power supplies (6-10 kV) for ion separation.
  • Existing HV sources can be expensive, limiting IMS accessibility.

Purpose of the Study:

  • To develop a low-cost, adaptable HV power supply for IMS.
  • To demonstrate the feasibility of using commercial HV modules and microcontrollers for IMS instrumentation.

Main Methods:

  • Utilized inexpensive, commercially available 0-20 kV HV modules.
  • Integrated modules with an Arduino microcontroller and digital-to-analog converter for precise control.
  • Implemented dual polarity selection and potential ramping for device protection.

Main Results:

  • Successfully mapped HV modules to a 0-5 V analog input signal.
  • Demonstrated controllable dual polarity output.
  • Achieved safe potential ramping between settings.

Conclusions:

  • Presented a cost-effective alternative for IMS HV power supply.
  • The developed system offers flexibility and safety features for IMS applications.
  • This approach can lower the barrier to entry for IMS technology.