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I don't think you are able to view my "cut and paste .jpg" so I uploaded to the community media
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The standard cross section fibre epoxy SThM sample imaged using the regular GLA probes but instead of contact mode based we are using the default ScanAsyst workspace. The thermal contrast is similar to that seen in the contact mode based approach.
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Hi Michael, How rough are your wood sections? what size scans are you doing? I know it can be troublesome getting good contact mode images with SThM on even slightly rough samples. Generally scanning a slow as possible helps with SThM. If you have an Icon you might try SThM in Peak Force Tapping Mode. This works, I have tried it before (attached a screenshot
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I didn't have the exact same problem but something similar a while back...it turned out to be a problem specific to IE10. I switched to using FireFox and logging in worked fine for me again. Best regards
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Hi Husam, I think it only depends on the optics...as long as you can see a small particle you should be able to locate the bare cantilever underneath it and press them together. If memory serves we had a 40X objective on ours and I could make 2-3um colloid probes with ease. Best regards
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Normal 0 false false false EN-GB X-NONE X-NONE MicrosoftInternetExplorer4 Hi Husam, The easiest way forward for your different chemical composition and shape beads is to look to a company like NovaScan, they do many different standard particle attachments to a variety of cantilevers. They can also do custom orders. Attaching > 5um beads to cantilevers
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Hi Maharavo, The sample substrate sounds ok to me. To my understanding the surface potential technique will be most sensitive to the uppermost conductive layer of your sample, and also any trapped charge. So if there is charge associated with the embedded clay particles this could well show up in the surface potential channel. The depth from the surface
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My preferred method of finding the correct lock-in2-phase is: Obtain a good topography image then enable Lift Mode at 50nm for example Hit generic sweep Set lift height at 50nm Click interleave radio button When it asks if you want to unlink parameters click “no” Sweep lock-in2-phase versus amplitude2 and potential You should get two “square
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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
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Hi Huabin, Yes you will need to collect at least one force curve at some point to look at the gradient of the contact region or constant compliance zone. This will tell you the deflection sensitivity i.e. what voltage on the photodetector corresponds to what deflection of the cantilever. Unless this is done your deflection image is not calibrated. The