nanoHUB-U: Fundamentals of Atomic Force Microscopy, Part 1: Fundamental Aspects of AFM

nanoHUB-U: Fundamentals of Atomic Force Microscopy, Part 1: Fundamental Aspects of AFM

Offering: 01a Section: Self Paced

Video
  • Lecture 4.3: Jump to Contact 1. Lecture 4.3: Jump to Contact 0
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  • Jump to Contact 2. Jump to Contact 29.9
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  • Total Interaction Potential 3. Total Interaction Potential 81.1
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  • Conditions for Stable/Unstable Equilibrium 4. Conditions for Stable/Unstable… 239.43333333333334
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  • The jump to contact (jtc) feature 5. The jump to contact (jtc) feat… 325.1
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  • Keeping it all straight Cantilever displacement (z) Gap (or tip-sample distance) (d) Cantilever deflection (q) Cantilever force (kq) Sample deformation (D) d=z+q (q is signed; remember sign convention for q) If you control z and measure q, you can infer d Tip-sample force can be inferred from measured cantilever force 6. Keeping it all straight Cantil… 502.03333333333336
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  • Distinguish Between Force vs. gap distance and Force vs. z-displacement 7. Distinguish Between Force vs. … 642.26666666666665
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  • Displacement(z) and Gap(d) - Schematic 8. Displacement(z) and Gap(d) - S… 914.86666666666667
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  • Relating z to d using the DMT model 9. Relating z to d using the DMT … 977.63333333333333
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  • Approach Curve: Focus on z, d and q 10. Approach Curve: Focus on z, d … 1149.2666666666667
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  • Results for DMT Model 11. Results for DMT Model 1424.9
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  • Up Next: Converting Approach Curve Data (VPSD vs. z-Displacement) to Force vs.Tip-Sample Gap 12. Up Next: Converting Approach C… 1545.1333333333334
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L4.3: Force Spectroscopy - Jump to Contact

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