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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

4.5K
Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
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Three-Dimensional Force System01:30

Three-Dimensional Force System

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In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
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Two-Dimensional Force System01:20

Two-Dimensional Force System

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A two-dimensional system in mechanical engineering involves the analysis of motion and forces in a plane. A two-dimensional force vector can be resolved into its components as:
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Two-Dimensional Force System: Problem Solving01:29

Two-Dimensional Force System: Problem Solving

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Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
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Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
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Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

1.4K
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
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Related Experiment Video

Updated: Feb 4, 2026

Atomic Force Microscopy of Red-Light Photoreceptors Using PeakForce Quantitative Nanomechanical Property Mapping
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360° multiparametric imaging atomic force microscopy: A method for three-dimensional nanomechanical mapping.

Haojian Lu1, Yongbing Wen2, Hao Zhang2

  • 1Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, China.

Ultramicroscopy
|October 10, 2018
PubMed
Summary

This study introduces a robotic Atomic Force Microscope (AFM) system for comprehensive 360° mapping and 3D reconstruction of sample topography and nanomechanical properties, overcoming previous orientation limitations.

Keywords:
360° multiparametric imaging3D nanomechanical mappingAtomic force microscopyMicro/nano robotic

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Microscopy

Background:

  • Atomic Force Microscopy (AFM) is crucial for nanoscale imaging and characterization.
  • Characterizing anisotropic materials requires analysis across various orientations.
  • Current AFM techniques face challenges in achieving full 360° 3D sample mapping.

Purpose of the Study:

  • To develop a novel multiparametric imaging AFM system capable of 360° sample rotation.
  • To enable comprehensive 3D reconstruction of sample topography and nanomechanical properties.
  • To address the limitations of existing AFM methods for full-orientation material analysis.

Main Methods:

  • Integration of a three degrees of freedom (DoFs) high-precision rotation stage with AFM.
  • Implementation of a home positioning approach to correct for rotational eccentricities.
  • Utilizing force-distance curves for multiparametric data acquisition during sample rotation.

Main Results:

  • Successful 360° multiparametric mapping of a human hair sample.
  • Accurate 3D reconstruction of topography, adhesion, modulus, and energy dissipation.
  • Demonstration of the system's practicability and reliability for nanoscale characterization.

Conclusions:

  • The developed robotic AFM system effectively achieves full 360° mapping and 3D reconstruction.
  • The proposed method enhances the characterization capabilities of AFM for complex materials.
  • This advancement offers new possibilities for analyzing materials at the micro- and nanoscale.