Publication Date
2025
Presentation Length
15 minutes
College
College of Sciences & Mathematics
Department
Chemistry and Physics, Department of
Student Level
Undergraduate
SPARK Category
Research
Faculty Advisor
Dr. Davon Ferarra
SPARK Session
Chem and Phy Senior Research
Presentation Type
Talk/Oral
Summary
Resistivity is an intrinsic property that determines how strongly electrical current is resisted. Measurement of the resistivity of materials is vital for many fields of science and engineering. This is easily accomplished with a four-point probe. However, commercial probes can be costly. Using 3-D printing and based on the design in Lu et al. (J. Chem. Educ. 2017), a functional four-point probe has been built at a much lower cost in materials. Additionally, the probe design has been simplified for easier construction and better compatibility with Belmont University’s 3- D printers. ITO glass was used to determine the accuracy of the probe. The results show that with proper correction factors, the measured values are within 60% of the manufacturer’s reported values. Not only can this device be useful for material research, it also has educational value as an advanced lab project.
Recommended Citation
Siens, Benjamin, "Measuring Resistivity with Low-cost 3-D Printed Four-point Probe" (2025). SPARK Symposium Presentations. 569.
https://repository.belmont.edu/spark_presentations/569
