Afm Topography Imaging
Afm Topography Imaging - Related Videos
08:21
Quantitative Hardness Measurement by Instrumented AFM-indentation
0 Views •
Cited by 6 •
2016
This experimental protocol describes how atomic force microscopy can be used to measure hardness at the true nanometer scale and to detect single atomistic plasticity events.
09:47
AFM and Microrheology in the Zebrafish Embryo Yolk Cell
0 Views •
Cited by 3 •
2017
The lack of tools to measure material properties and tensional parameters in vivo prevents validating their roles during development. We employed atomic force microscopy (AFM) and nanoparticle-tracking to quantify mechanical features on the intact zebrafish embryo yolk cell during epiboly. These methods are reliable and widely applicable avoiding intrusive interventions.
01:25
Methods of Obtaining Topography
0 Views •
2025
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
08:59
Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM
0 Views •
Cited by 3 •
2013
Organic photovoltaic (OPV) materials are inherently inhomogeneous at the nanometer scale. Nanoscale inhomogeneity of OPV materials affects performance of photovoltaic devices. In this paper, we describe a protocol for quantitative measurements of electrical and mechanical properties of OPV materials with sub-100 nm resolution.
08:29
Au-Interaction of Slp1 Polymers and Monolayer from Lysinibacillus sphaericus JG-B53 - QCM-D, ICP-MS and AFM as Tools for Biomolecule-metal Studies
0 Views •
Cited by 12 •
2016
To obtain basic information on the sorption and recycling of gold from aqueous systems the interaction of Au(III) and Au(0) nanoparticles on S-layer proteins were investigated. The sorption of protein polymers was investigated by ICP-MS and that of proteinaceous monolayers by QCM-D. Subsequent AFM enables the imaging of the nanostructures.
FAQs
During a scan, the sharp probe follows surface features while forces between the tip and sample deflect the flexible cantilever. A laser detects that deflection through reflected light, and a photodetector converts the signal into height data. Software then represents those measurements as a three-dimensional topographic image.
The cantilever provides the flexible mechanical element that responds to tip-sample forces, while the laser supplies an optical readout of its deflection. The photodetector receives that optical signal and turns it into measurable data. Together, these components allow tiny changes in surface height to be recorded as spatially resolved morphology.
Controlled measurement conditions matter because the recorded height depends on the interaction between the probe and the sample. Maintaining consistent conditions helps researchers interpret deflection data as meaningful differences in surface structure rather than uncontrolled changes in the measurement. This is particularly important when comparing surface quality or fabrication processes.
AFM topography imaging can expose three-dimensional features, surface roughness, and structural changes across a sample. These outputs provide more than a single average value: they show how morphology varies from location to location. In engineering studies, that spatial information helps identify defects and assess whether a surface meets expectations for quality.
A basic workflow begins by positioning a sharp probe over the sample and scanning across its surface. Tip-sample forces deflect the cantilever, and the laser-photodetector system records those deflections. The resulting height data are assembled into a topographic map, with measurement conditions controlled so different regions or samples can be compared.
Engineers apply these maps to thin films, semiconductor devices, polymers, coatings, and nanostructured materials. The method supports surface-quality assessment, defect identification, and comparisons among fabrication processes, while requiring no extensive sample preparation. These uses make it valuable when nanoscale morphology must be examined directly in relation to engineered surfaces.
Within engineering, the importance of the measurement extends beyond appearance. Nanoscale morphology can be compared with mechanical, electrical, or other functional performance to investigate how surface structure relates to behavior. Such comparisons help researchers evaluate structural changes and determine whether a fabrication process produces the surface characteristics needed for a target application.