Dunk and Scan Liquid Cell and Probe Holder for NP/SA/LS AFM
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TT-2 and HR AFM - Model: DS-NPSA
SA, NP, LS AFM - Model: DS-SSAFM
Download Dunk and Scan Datasheet
An atomic force microscope(AFM) is the only microscope that can measure submicron images of a sample’s surface with the sample being submerged in a liquid. The dunk and scan option includes a probe holder and liquid cell.
In this design, the laser passes through a glass window and a small amount of liquid, and is then reflected off the cantilever. After reflecting off the cantilever, the light passes through the liquid and then through the glass window. For scanning in liquids, the Dunk and Scan Probe Holder is typically much simpler to use than an environmental cell.
AFM image of a cheek cell measured with the LS AFM. The cell was mounted on a glass slide, and scanned in non-vibrating mode. The blue arrow denotes the location of a nanoindentation made with an AFM probe. Scan size is 50 x 50 microns.
SCANNING PROCEDURE
The following procedure is followed for scanning samples with the dunk and scan option.
- Mount the sample and probe in the microscope
- Alight the laser and photodetector.
- Bring the probe to the sample, scan in air
- Tip retract a few microns.
- Add liquid via the fill tube.
- Re-align the laser and photodetector
- Probe approach
- Scan the sample
Sample scanning dunk and scan probe holder. A movable probe clip holds the probe in place while scanning.
SPECIFICATIONS
Probes
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Sample
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Preamplifier Gains Specifications
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The liquid vessel used in the Dunk and Scan option has a sample holder, fill tube, and viewing window. The sample holder uses magnets to hold a standard AFM sample disk.
Force distance curve measured on a flat substrate submerged in a liquid. The inbound curve is red, and the outbound curve is blue
