ott.ua.edu

1. UAPD# 15-0013
Dr. Nima Mahmoodi
Multi-Piezoelectric Microcantilever

2. Current Problems
• Scanning probe microscopy used to provide three-
dimensional imaging of physical surfaces.
– Image recorded by mechanically moving a microcantilever
sensor close to the surface.
• Current method of monitoring the position of
microcantilever is a laser.
– Expensive and requires safety regulations.
• Previous Attempts with Piezoelectrics
– A single layer piezoelectric microcantilever has been used.
– However, cannot be used for consensus observer estimation.

3. Technology
• Novel device and algorithm to
improve accuracy within micro-
cantilever Scanning Probe
Microscopes (SPMs).
• Uses multiple pieces of
piezoelectric material attached to
the surface of the micro-cantilever
• The consensus algorithm uses a
network of nodes to provide the
most accurate estimation of the
deflection of the micro-cantilever.

4. • Results in the elimination of the laser sensor.
• Enables operation and accurate measurements even
if there is a failure in the piezoelectric sensors.
• Technology increases the accuracy of scanning
probe microscopes.
– Using the novel combination of the consensus
algorithm and the piezoelectric sensor.
Advantages

5. • Dr. Nima Mahmoodi
• Assistant Professor
• 35 publications
• 1 patent application
• Department of
Mechanical
Engineering
Inventor

6. Office for Technology Transfer
720 2nd Ct E
Tuscaloosa, AL 35401
UAIPD# 15-0013
OTT@UA.edu
www.OTT.UA.edu