Measuring Hydrophobic Attraction with a Novel Colloid AFM ProbeJune 15th, 2012
Here’s an interesting problem: how do you create an atomic force microscope probe that will allow you to measure hydrophobic attraction? Hydrophobic attraction is the “unusually strong and long-range attractive force exhibited between hydrophobic surfaces in water.” A traditional hard-tip AFM probe will not be hydrophobic, but if you try to modify it with some kind of hydrophobic-coated bead, inconsistencies in the surface area will make calibration almost impossible. That’s why researchers at Zhejiang University in Hangzhou, China developed a collloid AFM tip. They prepared the silicon sample substrate with a preliminary ultrasonic cleaning.
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