Specific Process Knowledge/Characterization/AFM: Atomic Force Microscopy

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Nanoman

Nanoman: positioned in the Hymite room to the left of all the SEM's

The AFM: Nanoman is a product of Bruker. AFM stands for Atomic Force Microscope which is a scanning probe microscope where a sharp probe is scanned across a surface either in contact mode or tapping mode. The outcome is a topographic plot of the surface. It has a lateral solution of about 1 nm and a vertical resolution of less than 1 Å which makes it very suitable for topographic characterization in the nanometer regime. The limiting factor however is often the size of the probe in use. The tip radius of curvature (ROC) can be from 2 nm up to more than 20 nm depending on the chosen probe. The half cone angle of the tip can vary from less than 3^o to over 25^o giving problems resolving high aspect ratio structures.

The main purposes are surface roughness measurements and step/structure high measurements in the nanometer and sub-micrometer regime. For larger structure see the topografic measurement page.

For a tutorial on AFM see here: AFM

To get some product information from the vendor take a look at Bruker's homepage [1] (Bruker acquired Veeco's AFM business in Oct. 2010)

Free analysis software: For visualizing and analyzing AFM and Optical profiler files (Nanoman and Sensofar) Gwyddion

The user manual(s), quality control procedure(s) and results, user APV(s), technical information and contact information can be found in LabManager:
Nanoman in LabManager

An overview of the performance of the AFM: Nanoman

Std. tip Tap300Al-G

Std. tip Tap300Al-G

SSS-NCHR tip
(Super-Sharp-Silicon)

AR5-NCHR tip
(Aspect ratio 5)

Equipment		Nanoman
Purpose	Topografic measurement in the nanometer and and sub-micrometer regime	Surface roughness measurement Step/structure hight measurement Surface image
Performance	Scan range xy	Up to 90 µm square
	Scan range z	1 µm (can go up to 6µm with special settings)
	Resolution xy	Down to 1.4 nm - accuracy better than 2%
	Resolution z	<1 Å - accuracy better than 2%
	Max. scan depth as a function of trench width W	~1 for our standard probe. Can be improved to about 10 with the right probe
Hardware settings	Tip radius of curvature	Standard probe: <12 nm
	Standard Cantilevers/tips	Tap300Al-G
	Super Sharp Si Cantilever/tip	SSS-NCHR
	High Aspect Ratio Cantilever/tip	AR5-NCHR
	Cantilevers/tips vendor	www.nanoandmore.com
Substrates	Substrate size	Up to 6"
	Substrate material allowed	In principle all materials