2009 Advanced Laboratories Conference Abstract Detail Page

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Abstract Title: The Bug: A Temperature-controlled Experiment on a Protoboard
Abstract: We will develop and explore a fully-automated temperature-controlled experiment using inexpensive electronic components, LabVIEW and the NI-ELVIS platform. The core of the experimental system, which we call "the bug," is a simple three-component system made up of a thermistor, a resistor, and a ceramic (doped ferroelectric) capacitor bonded together. The thermistor and resistor combine to form the temperature measurement and control system. The ceramic capacitor is the component under study. The overall objective of the experiment is to measure its capacitance, and thus its underling ferroelectric behavior, as a function of temperature. This simple and inexpensive system allows for the exploration of a significant range of computer-based data acquisition and control topics. When fully integrated, this system mimics many of the common interfacing, acquisition, and control issues encountered in table-top condensed-matter physics experiments.

Participants will:
  • develop software to measure resistance, and to control and measure slowly-varying voltage signals
  • implement, tune, and test a software-based proportional-integral-derivative (PID) temperature controller capable of mK stability
  • develop software to generate and acquire buffered voltage waveforms in response to a variety of triggering conditions
  • implement and explore noise rejection techniques using signal averaging and synchronous triggering
  • implement a fully-automated and multi-threaded experimental control system based upon the previous exercises, using it to measure the underlying ferroelectric response of the capacitor versus temperature
Abstract Type: Workshop
Session: Session VI - Workshops

Author/Organizer Information

Primary Contact: Paul Dixon
California State University at San Bernadino
5500 University Parkway
San Bernardino, CA 92407
Phone: (909) 537-5399
Fax: (909) 537-5298