2012 BFY Abstract Detail Page
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| Abstract Title: |
Predicting and Measuring the Resonant Frequency of a Microcantilever |
| Abstract: |
As a segment of our advanced lab course, students calculate the resonant frequency of a microcantilever (AFM probe) based on its dimensions (which they measure), and compare this with vibrational modes they observe (after assembling a basic system for optical transduction) when the cantilever is affixed to a piezoelectric drive. During the experiment, students become familiar with a number of instruments/components including a scanning electron microscope (SEM), a variety of optics components, a quadrant photodiode, op-amps, a digital oscilloscope, and a lock-in amplifier. This is one of our favorite labs because it exposes students to a wide range of experimental techniques while reinforcing their understanding of resonances and the continuum mechanics of solids. In addition, the data analysis component also presents realistic challenges. We present here a brief sketch of the experiment itself, the tasks assigned to students, the challenges they face, and a selection of student data/results. |
| Abstract Type: |
Poster
|
| Contributed Poster: |
Download the Contributed Poster
|
Author/Organizer Information |
| Primary Contact: |
Thushara Perera
Illinois Wesleyan University
P. O. Box 2900
Illinois Wesleyan University, Physics
Bloomington,
IL
61702
Phone: 3095563888
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Co-Author(s)
and Co-Presenter(s) |
Gabe Spalding
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