Ferrule-top atomic force microscope.

Area of Science:

• Microscopy and Nanotechnology
• Optical Physics
• Materials Science

Background:

• Ferrule-top cantilevers are all-optical miniaturized devices designed for use in liquids and harsh environments.
• They are fabricated by shaping the end of a ferruled fiber into a mechanical beam, enabling optical detection of deflections.

Purpose of the Study:

• To demonstrate the utility of ferrule-top cantilevers for developing ultra-compact atomic force microscopes (AFMs).
• To evaluate their performance in contact mode imaging in both air and liquid environments.

Main Methods:

• Fabrication of ferrule-top cantilevers by carving ferruled fiber ends into mechanical beams.
• Utilizing light coupled through the fiber for detecting cantilever deflections.
• Performing contact mode imaging in air and liquids using the developed AFM system.

Main Results:

• Ferrule-top cantilevers facilitate the development of ultra-compact AFMs.
• The developed AFM system achieves sensitivity comparable to commercial AFMs.
• The probes demonstrate ease of handling and require no alignment procedures.

Conclusions:

• Ferrule-top cantilevers are suitable for creating highly sensitive, compact AFM systems.
• Their robustness and ease of use expand AFM applications beyond traditional laboratory settings.
• These devices offer a promising platform for advanced imaging in diverse environments.