ROBERT RUDNITSKY

Raw Data:

    12 Micron Bead Data
 

The following is a 2-D picture, before corrections for long term drift, at perhaps 15 microns
from the surface:
 
raw07010013.jpg.

Data with long term drift removed

    12 Micron Bead Data

• 2-D Images:    In the 2-D images, color coding has been kept consistent.
• Multiple Line scan Images:    Likewise, in the multiple line scans, the blue line is always in the x-direction

over the bead's center.  The other 3 lines also go in the x-direction, but through consistent y positions across
all images.
• 3-D Force Images:  Here the color code is rescaled for each image to improve visual clarity.
• Single X-scans Over the Beads' Centers:  These are X-cross sections at the point of greatest deflection.
• Scan Speed:  21 µm per second or, equivalently, 179.2 data points per second for all of the following scans.

These are relatively slow, but much faster scans have been done.
• Smoothing: Smoothed data has each point representing the mean of that point and its four closest neighbors in x and y,

forming a 9x9 square array.

Single images with multiple scans over the 12 micron bead's center.
 
Full range: these three center scans were done at 15, 20, and 40 microns.
 
Full Range.             Full Range (smoothed).
 
Strong signal: these were done at 15, 17, and 20 microns.
 
Strong signal.         Strong signal (smoothed).
 
Weaker signal: these were done at 25, 30, and 40 microns.
 
Weaker signal.         Weaker signal (smoothed).
 
 

    8 Micron Bead Data

• 2-D Images:    In the 2-D images, color coding has been rescaled for each image.
• Multiple Line scan Images:    In the multiple line scans, the blue line is always in the x-direction

over the bead's center.  The other 3 lines also go in the x-direction, but through consistent y positions across
all images.
• 3-D Force Images:  The color code is again rescaled for each image to improve visual clarity.
• Single X-scans Over the Beads' Centers:  These are X-cross sections at the point of greatest deflection.
• Scan Speed:  21 µm per second or, equivalently, 179.2 data points per second for all of the following scans.

These are relatively slow, but much faster scans have been done.
• Smoothing: Smoothed data has each point representing the mean of that point and its ten closest neighbors in x and y,

forming the mean of a 21x21 pixel square array.

  About these scans
 

Microlever-C Information Cantilever Type Gold Coated Silicon Nitride Cantilever Shape Triangle Cantilever Length (L) 320 µm Cantilever Width (W) 22 µm Cantilever Thickness 0.6 µm Force Constant 0.01 N/m Resonant Frequency 7 kHz

 

 

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