Combination of Universal Mechanical Testing Machine with Atomic Force Microscope for Materials Research

Area of Science:

• Materials Science
• Mechanical Engineering
• Nanotechnology

Background:

• Understanding material deformation and fracture under external forces is crucial for materials development.
• Existing atomic force microscope (AFM)-combined tensile/compression devices have limitations in load force, specimen size, and strain rate capabilities.

Purpose of the Study:

• To develop and evaluate a novel combined horizontal universal mechanical testing machine (HUMTM)-atomic force microscope (AFM) system.
• To analyze the relationship between macroscopic mechanical properties, surface nanomorphology, and fracture processes in thin film materials.

Main Methods:

• Modification of a HUMTM to integrate with AFM, including a height-adjustable stabilizing apparatus.
• Evaluation of the combined HUMTM-AFM system's performance.
• Application to study polymer (Parafilm) and metal (aluminum foil) thin films under external force.

Main Results:

• The combined HUMTM-AFM system successfully analyzed macroscopic mechanical properties and surface nanomorphological changes.
• It demonstrated the ability to study materials with both high (polymer) and low (metal) strain rates.
• The system overcomes limitations of previous AFM-combined devices, such as small load force and inability to handle large specimens.

Conclusions:

• The developed combined HUMTM-AFM system is a versatile and promising tool for advanced materials research.
• It provides new capabilities for investigating material behavior at multiple scales.
• This technology facilitates a deeper understanding of deformation and fracture mechanisms in thin films.