Specific Process Knowledge/Characterization/AFM: Atomic Force Microscopy/Workspaces: Difference between revisions
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|Roughness measurement can be done in both Contact, Tapping and ScanAsyst mode. We recommend '''ScanAsyst mode''' because of less chance of (non-uniform) deformation of the sample and less tip wear - and because of ease of use. However it also works fine in tapping mode. | |Roughness measurement can be done in both Contact, Tapping and ScanAsyst mode. We recommend '''ScanAsyst mode''' because of less chance of (non-uniform) deformation of the sample and less tip wear - and because of ease of use. However it also works fine in tapping mode. | ||
|For Topographic measurements with no steep/abrupt steps we also recommend '''Tapping mode''' on most samples. Only on very soft samples (e.g. cells) we recommend ''ScanAsyst'' due to less chance of (non-uniform) deformation of the sample - or if you need QNM data. We mainly recommend '''Tapping mode''' because we experience less problems when the tip end is slightly broken. | |For Topographic measurements with no steep/abrupt steps we also recommend '''Tapping mode''' on most samples. Only on very soft samples (e.g. cells) we recommend ''ScanAsyst'' due to less chance of (non-uniform) deformation of the sample - or if you need QNM data. We mainly recommend '''Tapping mode''' because we experience less problems when the tip end is slightly broken. | ||
|For Steep/abrupt steps but no high aspect ratio structures we still recommend '''Tapping mode''' | |For Steep/abrupt steps but no high aspect ratio structures we still recommend '''Tapping mode''' unless you need need QNM data. | ||
|For High aspect ratio measurements we recommend Tapping mode. We do not have experience with ScanAsyst therefore we recommend '''Tapping mode'''. | |For High aspect ratio measurements we recommend Tapping mode. We do not have experience with ScanAsyst therefore we recommend '''Tapping mode'''. | ||
|For large scan areas where you prioritize to scan fast then you can use '''contact mode'''. Here you can scan with scan rate of up to 2.43 Hz | |For large scan areas where you prioritize to scan fast then you can use '''contact mode'''. Here you can scan with scan rate of up to 2.43 Hz | ||
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===Peak Force KPFM (Kelvin Probe Force Microscopy)=== | ===Peak Force KPFM (Kelvin Probe Force Microscopy)=== | ||
*Application note on KPFM: [ | *Application note on KPFM: [[File: PeakForce-Kelvin-Probe-Force-Microscopy-App-Note-BRUKER.pdf]] - used with permission | ||
=Evaluation of used probes= | =Evaluation of used probes= | ||
Latest revision as of 15:33, 28 April 2023
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This page is written by Berit Herstrøm @ DTU Nanolab
What scanning mode, experiment/workspace and probe should I select
| Roughness measurements | Topographic measurements with no steep/abrupt steps | Steep/abrupt steps but no high aspect ratio | High aspect ratio measurements | Large area fast scan | |
|---|---|---|---|---|---|
| Recommended mode | Roughness measurement can be done in both Contact, Tapping and ScanAsyst mode. We recommend ScanAsyst mode because of less chance of (non-uniform) deformation of the sample and less tip wear - and because of ease of use. However it also works fine in tapping mode. | For Topographic measurements with no steep/abrupt steps we also recommend Tapping mode on most samples. Only on very soft samples (e.g. cells) we recommend ScanAsyst due to less chance of (non-uniform) deformation of the sample - or if you need QNM data. We mainly recommend Tapping mode because we experience less problems when the tip end is slightly broken. | For Steep/abrupt steps but no high aspect ratio structures we still recommend Tapping mode unless you need need QNM data. | For High aspect ratio measurements we recommend Tapping mode. We do not have experience with ScanAsyst therefore we recommend Tapping mode. | For large scan areas where you prioritize to scan fast then you can use contact mode. Here you can scan with scan rate of up to 2.43 Hz |
| Recommended probes | Tap150Al-G or ScanAsyst in air | Tap150Al-G or ScanAsyst in air | Tap150Al-G or ScanAsyst in air for ScanAsyst mode
Tap150Al-G or TAP300Al-G for Tapping mode |
AR5T-NCHR or | SNL |
| Recommended experiment/Workspace |
Check the user manual in LabManager |
Check the user manaual in LabManager |
Check the user manaual in LabManager | TappingMode 300nm trench (for steps <~1µm)
Tappping mode in air - 6µm Deep Trench (for steps >1~µm) |
Standard Contact mode |
*By choosing the work space/experiment QNM in air (Mechanical properties - QNM in air) scanAsyst is included and so are the nanomechanical properties like modulus, adhesion, dissipation and deformation.
More information about de different modes
Contact, Tapping and Peak Force Tapping
Please flowing this link to down load the file from LabManager (Requires login):
Introduction to Bruker ScanAsyst and PeakForce tapping AFM technology
PeakForce tapping and quantitative nanomechanical mapping
- Application note on QNM: requires login
Peak Force KPFM (Kelvin Probe Force Microscopy)
- Application note on KPFM: File:PeakForce-Kelvin-Probe-Force-Microscopy-App-Note-BRUKER.pdf - used with permission
Evaluation of used probes
| Box number and probe number | User Initials | Explanation | SEM images | Conclusion |
|---|---|---|---|---|
| Box1 no. 1 | bghe | A lot of triangles in the image |   |
Tip end has broken off |
| Box1 no. 2 | bghe/smurthy | Round pillars became misshaped |  |
Tip end has broken off or maybe if was not good to begin with |
| Box1 no. 3 | bghe/zhongli | Force curve bad, could not get the tip off the surface |    |
Tip end has broken off |
| Box1 no. 4 | mattod | Used dirty sample, force curve very bad, tip probably broken |  |
The hole cantilever has broken off |
| Box1 no. 5 | mattod | Tip broken during tip change |  |
Tip/cantilever has been damaged |
| Box1 no. 6 | abshir | Bad force curve (fluctuates) |    |
Tip end has broken off |
| Box1 no. 7 | bghe | Was OK on large structures but they got larger |   |
|
| Box1 no. 8 | mattod | Bad force curve |   |
Tip end has broken off |
| Box1 no. 9 | kabi | Blunt tip . Definitely (triangles) |   |
Tip end has broken off |
| Box1 no. 10 | kabi | Blunt tip. Definitely (triangles) |   |
Tip end has broken off |
| Box2 no. 1 | mattod | Bad force curve |    |
Tip seems ok, or at least very close to okay |
| Box2 no. 2 | mattod | Broken tip |    |
It looks like the tip end has been contaminated |
| Box2 no. 3 | bghe | Got large triangle scanning the tip checker |  |
Tip end has broken off |