Microfabrication techniques using focused ion beams and emergent applications

Area of Science:

• Materials Science and Engineering
• Nanotechnology
• Mechanical Engineering

Background:

• Focused Ion Beam (FIB) machining is an advanced technique for precise material removal at the micro- and nanoscale.
• Traditional methods for microstructure fabrication face limitations in precision and complexity.
• Emerging applications require highly specialized micro-tools and manipulators.

Purpose of the Study:

• To present the application of FIB machining for microstructure fabrication.
• To demonstrate the production of micromilling and microsurgical tools using FIB.
• To discuss the transition of laboratory FIB fabrication to a routine production process.

Main Methods:

• Utilized focused ion beam (FIB) machining for microstructure fabrication.
• Developed and applied a mathematical model for precise control of FIB deflection.
• Demonstrated ion milling of three-dimensional cavities with specific cross-sectional shapes.

Main Results:

• Successfully produced micromilling tools for metal machining and microsurgical tools.
• Showcased microsurgical manipulators for applications like circulatory system measurements.
• Achieved accurate ion milling of 3D cavities, validating the mathematical model for parabolic and cosine cross-sections.

Conclusions:

• FIB machining is a viable technology for producing advanced microstructures and tools.
• Mathematical modeling provides precise control over FIB processes for complex geometries.
• The transition from lab-scale to production-scale FIB fabrication is feasible for these applications.