The Scanning Probe Microscope in Biology

S.M. Lindsay

Department of Physics and Astronomy

Arizona State University

Tempe, AZ 85287-1504

 

First draft, posted for comments/feedback only, final version will be published by John Wiley in the book "Scanning Tunneling Microscopy and related techniques" ed. D. Bonnell.

 

Table of Contents

1. Introduction

2. Fundamentals of AFM: Sensitivity and Resolution

2a: Intrinsic sensitivity of the optical lever

2b. Limits on interaction forces - thermal noise

2c. Limits to resolution and imaging in fluid

 

3. Interactions at a liquid-solid interface

4. Mechanics of the AFM cantilever in a fluid

5. Mechanism of Dynamic Force Microscopy in Fluid

5.1. Introduction

5.2. Operating amplitude and spring constant for DFM in liquid.

5.3. Acoustic versus magnetic drive

5.4 Harmonic and anharmonic analysis of low frequency data

5.5. Amplitude decay over a wide frequency range

5.6. A numerical model of the high amplitude DFM

5.7. Summary and future development

 

6. Practical Instrumentation

7. Sample preparation

7.1 Introduction

7.2 Adsorption from solution

7.3 Equilibration on the surface

7.4 Salt effects on adsorption and conditions for weak adsorption

7.5 Silane treatments of mica

7.6 Adsorption of heterogeneously charged material

7.7 Future developments

 

8. Imaging

9. Non-linear elasticity of individual molecules

10. Chemical bonds and anti-body-antigen interactions

11. STM images of biological molecules and electrical measurements on single molecules

12. Future Development

 

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