scholarly journals Large colloidal probes for atomic force microscopy: Fabrication and calibration issues

2020 ◽  
Vol 34 (1) ◽  
Author(s):  
Matteo Chighizola ◽  
Luca Puricelli ◽  
Ludovic Bellon ◽  
Alessandro Podestà
Keyword(s):  
Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Colloidal Probes

scholarly journals Nanomechanical and topographical imaging of living cells by atomic force microscopy with colloidal probes

2015 ◽  
Vol 86 (3) ◽  
pp. 033705 ◽  
Author(s):  
Luca Puricelli ◽  
Massimiliano Galluzzi ◽  
Carsten Schulte ◽  
Alessandro Podestà ◽  
Paolo Milani
Keyword(s):  
Atomic Force Microscopy ◽  
Living Cells ◽  
Force Microscopy ◽  
Atomic Force ◽  
Colloidal Probes

Calibration of colloidal probes with atomic force microscopy for micromechanical assessment

2018 ◽  
Vol 85 ◽  
pp. 225-236 ◽  
Author(s):  
Lukas Kain ◽  
Orestis G. Andriotis ◽  
Peter Gruber ◽  
Martin Frank ◽  
Marica Markovic ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Colloidal Probes

Probing the Role of Nanoroughness in Contact Mechanics by Atomic Force Microscopy

2006 ◽  
Vol 51 ◽  
pp. 90-98 ◽  
Author(s):  
Renato Buzio ◽  
Ugo Valbusa
Keyword(s):  
Atomic Force Microscopy ◽  
Contact Mechanics ◽  
Crucial Role ◽  
Experimental Results ◽  
Present Contribution ◽  
Force Microscopy ◽  
Atomic Force ◽  
Colloidal Probes ◽  
Solid Bodies

Morphological information can be related to significant properties of solid bodies, like their friction, adhesion and wear. The primary aim of the present contribution is to provide evidences of the crucial role played by roughness in contact mechanics, based on Atomic Force Microscopy investigations at the nanoscale. We report experimental results concerning poly(dimethylsiloxane) colloidal probes indenting smooth substrates and discuss the dependence of load-penetration curves and pull-off forces on system details. We suggest their use to perform novel contact mechanics experiments on nanostructured rough surfaces.

Extending the limits of direct force measurements: colloidal probes from sub-micron particles

Nanoscale ◽  
2017 ◽  
Vol 9 (27) ◽  
pp. 9491-9501 ◽  
Author(s):  
Nicolas Helfricht ◽  
Andreas Mark ◽  
Livie Dorwling-Carter ◽  
Tomaso Zambelli ◽  
Georg Papastavrou
Keyword(s):  
Atomic Force Microscopy ◽  
Long Range ◽  
External Pressure ◽  
Silica Particles ◽  
Force Measurements ◽  
Force Microscopy ◽  
Small Probe ◽  
Atomic Force ◽  
Long Range Interactions ◽  
Colloidal Probes

Long-range interactions between sub-micron silica particles have been determined by means of a combination of atomic force microscopy (AFM) with nanofluidics, which allows for a temporary immobilization of small probe particles by an external pressure.

A Validation Study of the Repeatability and Accuracy of Atomic Force Microscopy Indentation Using Polyacrylamide Gels and Colloidal Probes

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
Donghee Lee ◽  
Sangjin Ryu
Keyword(s):  
Atomic Force Microscopy ◽  
Elastic Materials ◽  
Time Intervals ◽  
Indentation Method ◽  
Force Microscopy ◽  
Afm Indentation ◽  
Atomic Force ◽  
Comparable Accuracy ◽  
Soft Biological Materials ◽  
Colloidal Probes

The elasticity of soft biological materials is a critical property to understand their biomechanical behaviors. Atomic force microscopy (AFM) indentation method has been widely employed to measure the Young's modulus (E) of such materials. Although the accuracy of the method has been recently evaluated based on comparisons with macroscale E measurements, the repeatability of the method has yet to be validated for rigorous biomechanical studies of soft elastic materials. We tested the AFM indentation method using colloidal probes and polyacrylamide (PAAM) gels of E < 20 kPa as a model soft elastic material after having identified optimal trigger force and probe speed. AFM indentations repeated with time intervals show that the method is well repeatable when performed carefully. Compared with the rheometric method and the confocal microscopy indentation method, the AFM indentation method is evaluated to have comparable accuracy and better precision, although these elasticity measurements appear to rely on the compositions of PAAM gels and the length scale of measurement. Therefore, we have confirmed that the AFM indentation method can reliably measure the elasticity of soft elastic materials.

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