The Nanoscale World

What is the "Dark Lift"?

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Hao Zheng posted on Mon, Sep 12 2011 10:28 PM

Hello!

Can anybody tell me what is the "Dark Lift" mode?

Thank you!

PS: I'm using MultiMode 8 

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Bruker Employee
Verified by Hao Zheng

Hi Hao Zheng,

"Dark Lift" simply turns the laser off during the interleave scan lines. Interleave and lift mode should be well documented in the manuals. You cannot use the Dark Lift technique for Force based modes such as EFM/ MFM/ KFM as you definitely need the laser on in the lift scan line. Dark lift is useful for techniques such as TUNA/ CAFM/ SCM where it can reduce artefacts caused by the laser spilling over the cantilever onto the sample. When using in this way it is somewhat ambiguous calling it "Dark Lift" as you may not be lifting the probe at all, you could work with a lift height of zero and simply retrace the exact same path of the main scan line.

 

Ian

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Top 25 Contributor
37 Posts
Points 422
Bruker Employee
Verified by Hao Zheng

Hi Hao Zheng,

"Dark Lift" simply turns the laser off during the interleave scan lines. Interleave and lift mode should be well documented in the manuals. You cannot use the Dark Lift technique for Force based modes such as EFM/ MFM/ KFM as you definitely need the laser on in the lift scan line. Dark lift is useful for techniques such as TUNA/ CAFM/ SCM where it can reduce artefacts caused by the laser spilling over the cantilever onto the sample. When using in this way it is somewhat ambiguous calling it "Dark Lift" as you may not be lifting the probe at all, you could work with a lift height of zero and simply retrace the exact same path of the main scan line.

 

Ian

  • | Post Points: 13
Top 200 Contributor
5 Posts
Points 56

Hi, Ian.

Thanks for your answer!

Hao Zheng

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