Equipment: AFM Bruker Dimension Edge
Responsible research: Dr. Francisco Flores
Day: 2
Today, I observed how a point for AFM is changed: We need to choose it depending on the material and the measurement we want to perform. For example, today’s sample is gold nanoparticles over a glass substrate. Then, we tried the TAP300Al-G, a probe from BudgetSensors. This probe is designed for AFM in Tapping mode and is coated with reflective aluminum.
From the company BudgetSensor, we can discover the function of the tip models:
- No coating: is designed for topography purposes
- Backside aluminum coating: is designed to enhance the laser reflectivity and ensure stable measurement form highly reflective surfaces.
- Backside Gold coating (inertness): is designed for stable liquid reflection measurement.
- Overall, coated Gold is designed and used for Biological Samples and aggressive chemical environments. It is often used for TIP functionalization.
- Cr and Pt coated probe: This probe is designed for electrical measurements, such as electrostatic force microscopy.
- Diamond-like carbon coating: enhances the durability of the tip and is designed to perform many consecutive scans
Here are some photographies from the training day:
Figure 1: Change of Tip for AFM Measurement in Bruker Dimension Edge
Figure 2: Responsible researcher placing the tip in the AFM equipment
Figure 3: Getting the sample inside (gold nanoparticles deposited on glass substrate)
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