Acknowledgements | p. xiii |
An Introduction | p. 1 |
Apparatus | p. 5 |
The atomic force microscope | p. 5 |
Piezoelectric scanners | p. 7 |
Probes and cantilevers | p. 10 |
Cantilever geometry | p. 10 |
Tip shape | p. 12 |
Tip functionality | p. 14 |
Sample holders | p. 14 |
Liquid cells | p. 15 |
Detection methods | p. 16 |
Optical detectors: laser beam deflection | p. 16 |
Optical detectors: interferometry | p. 18 |
Electrical detectors: electron tunnelling | p. 19 |
Electrical detectors: capacitance | p. 20 |
Electrical detectors: piezoelectric cantilevers | p. 21 |
Control systems | p. 21 |
AFM electronics | p. 21 |
Operation of the electronics | p. 24 |
Feedback control loops | p. 25 |
Design limitations | p. 27 |
Enhancing the performance of large scanners | p. 28 |
Vibration isolation: thermal and mechanical | p. 28 |
Calibration | p. 30 |
Piezoelectric scanner non-linearity | p. 30 |
Tip related factors: convolution | p. 31 |
Calibration standards | p. 32 |
Tips for scanning a calibration specimen | p. 33 |
Integrated AFMs | p. 34 |
Combined AFM-light microscope (AFM-LM) | p. 34 |
'Submarine' AFM - the combined AFM-Langmuir Trough | p. 35 |
Combined AFM-surface plasmon resonance (AFM-SPR) | p. 36 |
Cryo-AFM | p. 36 |
Basic Principles | p. 41 |
Forces | p. 41 |
The Van der Waals force and force-distance curves | p. 41 |
The electrostatic force | p. 44 |
Capillary and adhesive forces | p. 44 |
Double layer forces | p. 46 |
Imaging modes | p. 47 |
Contact dc mode | p. 47 |
Ac modes: Tapping and non-contact | p. 47 |
Deflection mode | p. 54 |
Image types | p. 55 |
Topography | p. 55 |
Frictional force | p. 56 |
Phase | p. 56 |
Substrates | p. 58 |
Mica | p. 58 |
Glass | p. 58 |
Graphite | p. 58 |
Common problems | p. 59 |
Thermal drift | p. 59 |
Multiple tip effects | p. 59 |
The 'pool' artifact | p. 61 |
Optical interference on highly reflective samples | p. 61 |
Sample roughness | p. 62 |
Sample mobility | p. 63 |
Imaging under liquid | p. 64 |
Getting started | p. 65 |
DNA | p. 65 |
Troublesome large samples | p. 68 |
Image optimisation | p. 70 |
Grey levels and colour tables | p. 70 |
Brightness and contrast | p. 71 |
High and low pass filtering | p. 71 |
Normalisation and plane fitting | p. 71 |
Despike | p. 71 |
Fourier filtering | p. 72 |
Correlation averaging | p. 73 |
Stereographs and anaglyphs | p. 73 |
Do your homework! | p. 74 |
Macromolecules | p. 76 |
Imaging methods | p. 76 |
Tip adhesion, molecular damage and displacement | p. 76 |
Depositing macromolecules onto substrates | p. 77 |
Metal coated samples | p. 78 |
Imaging in air | p. 79 |
Imaging under non-aqueous liquids | p. 80 |
Binding molecules to the substrate | p. 81 |
Imaging under water or buffers | p. 85 |
Nucleic acids: DNA | p. 86 |
Imaging DNA | p. 87 |
DNA conformation, size and shape | p. 88 |
DNA-protein interactions | p. 94 |
Location and mapping of specific sites | p. 99 |
Chromosomes | p. 102 |
Nucleic acids: RNA | p. 105 |
Polysaccharides | p. 106 |
Imaging polysaccharides | p. 107 |
Size, shape, structure and conformation | p. 108 |
Aggregates, networks and gels | p. 117 |
Cellulose, plant cell walls and starch | p. 122 |
Proteoglycans and mucins | p. 128 |
Proteins | p. 130 |
Globular proteins | p. 131 |
Antibodies | p. 136 |
Fibrous proteins | p. 139 |
Interfacial Systems | p. 181 |
Introduction to interfaces | p. 181 |
Surface activity | p. 181 |
AFM of interracial systems | p. 184 |
The Langmuir trough | p. 185 |
Langmuir-Blodgett film transfer | p. 186 |
Sample preparation | p. 188 |
Cleaning protocols: glassware and trough | p. 188 |
Substrates | p. 189 |
Performing the dip | p. 191 |
Phospholipids | p. 192 |
Early AFM studies of phospholipid films | p. 193 |
Modification of phospholipid bilayers with the AFM | p. 194 |
Studying intrinsic bilayer properties by AFM | p. 196 |
Ripple phases in phospholipid bilayers | p. 199 |
Mixed phospholipid films | p. 202 |
Effect of supporting layers | p. 205 |
Dynamic processes of phopholipid layers | p. 208 |
Liposomes and intact vesicles | p. 211 |
Lipid-protein mixed films | p. 213 |
High resolution studies of phospholipid bilayers | p. 217 |
Miscellaneous lipid films/surfactant films | p. 219 |
Interfacial protein films | p. 219 |
Specific precautions | p. 220 |
AFM studies of interfacial protein films | p. 222 |
Chapter 6 | p. 231 |
Three-dimensional crystals | p. 231 |
Crystalline cellulose | p. 231 |
Protein crystals | p. 232 |
Nucleic acid crystals | p. 235 |
Viruses and virus crystals | p. 236 |
Two dimensional protein crystals: an introduction | p. 240 |
What does AFM have to offer? | p. 241 |
Sample preparation: membrane proteins | p. 243 |
Sample preparation: soluble proteins | p. 244 |
AFM studies of 2D membrane protein crystals | p. 246 |
Purple membrane (bacteriorhodopsin) | p. 246 |
Gap junctions | p. 249 |
Photosynthelic protein membranes | p. 252 |
ATPase in kidney membranes | p. 252 |
OmpF porin | p. 253 |
Bacterial Slayers | p. 254 |
Bacteriophage Ø29 head-tail connector | p. 257 |
AFM imaging of membrane dynamics | p. 259 |
Force spectroscopy of membrane proteins | p. 261 |
Gas vesicle protein | p. 261 |
AFM studies of 2D crystals of soluble proteins | p. 262 |
Imaging conditions | p. 264 |
Electrostatic considerations | p. 266 |
Cells, Tissue and Biominerals | p. 276 |
Imaging methods | p. 276 |
Sample preparation | p. 277 |
Force mapping and mechanical measurements | p. 278 |
Microbial cells: bacteria, spores and yeasts | p. 290 |
Bacteria | p. 290 |
Yeasts | p. 300 |
Blood cells | p. 302 |
Erythrocytes | p. 302 |
Leukocytes and lymphocytes | p. 304 |
Platelets | p. 304 |
Neurons and Glial cells | p. 306 |
Epithelial cells | p. 307 |
Non-confluent renal cells | p. 309 |
Endothelial cells | p. 311 |
Cardiocytes | p. 313 |
Other mammalian cells | p. 314 |
Plant cells | p. 317 |
Tissue | p. 321 |
Embedded sections | p. 321 |
Embedment-free sections | p. 322 |
Hydrated sections | p. 323 |
Freeze-fracture replicas | p. 324 |
Immunolabelling | p. 324 |
Biominerals | p. 325 |
Bone, tendon and cartilage | p. 325 |
Teeth | p. 327 |
Shells | p. 328 |
Other Probe Microscopes | p. 342 |
Overview | p. 342 |
Scanning tunnelling microscope (STM) | p. 342 |
Scanning near-field optical microscope (SNOM) | p. 345 |
Scanning ion conductance microscope (SICM) | p. 347 |
Scanning thermal microscope (SThM) | p. 349 |
Optical tweezers and the photonic force microscope (PFM) | p. 351 |
Force Spectroscopy | p. 356 |
Force measurement with the AFM | p. 356 |
First steps in force spectroscopy: from raw data to force-distance curves | p. 357 |
Quantifying cantilever displacement | p. 357 |
Determining cantilever spring constants | p. 359 |
Anatomy of a force-distance curve | p. 362 |
Pulling methods | p. 364 |
Intrinsic elastic properties of molecules | p. 364 |
Molecular recognition force spectroscopy | p. 369 |
Chemical force microscopy (CFM) | p. 373 |
9.4 | p. 374 |
Colloidal probe microscopy (CPM) | p. 374 |
How to make a colloid probe cantilever assembly | p. 377 |
Deformation and indentation methods | p. 380 |
Analysis of force-distance curves | p. 381 |
Worm-like chain and freely jointed chain models | p. 382 |
Molecular interactions | p. 384 |
Deformation analysis | p. 387 |
Adhesive force at pull-off | p. 388 |
Elastic indentation depth, ¿, and contact radius, a, during deformation | p. 388 |
Contact radius at zero load | p. 389 |
Colloidal forces | p. 389 |
SPM Books | p. 397 |
Index | p. 399 |
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