A novel method of high-throughput micro-and nanomechanical sample fabrication

Area of Science:

• Materials Science
• Mechanical Engineering
• Nanotechnology

Background:

• Growing demand for understanding mechanical properties at nano- to meso-scales.
• Traditional sample preparation methods present challenges in efficiency and reproducibility.
• Need for advanced techniques to fabricate micro- and nanomechanical specimens.

Purpose of the Study:

• Introduce a novel LaserFIB method for efficient micro- and nanomechanical sample preparation.
• Address limitations in current sample fabrication techniques for multiscale mechanical testing.
• Improve the throughput and reliability of mechanical specimen preparation.

Main Methods:

• Combination of femtosecond laser and focused ion beam (FIB) milling.
• Site-specific sample preparation utilizing scanning electron microscope (SEM) characterization.
• Seamless integration of laser and FIB/SEM chambers to minimize sample damage.

Main Results:

• Significantly improved processing efficiency and success rate for sample preparation.
• Enabled high-throughput preparation of reproducible micro- and nanomechanical specimens.
• Maintained specimen integrity by preserving natural bonding to the bulk material.
• Extended processable sample size to meso-scale with high precision and efficiency.

Conclusions:

• The LaserFIB method offers a streamlined and effective solution for preparing micro- and nanomechanical samples.
• This technique enhances the reliability and efficiency of mechanical testing across various length scales.
• LaserFIB facilitates advancements in nano- to meso-scale mechanical testing by simplifying sample preparation.