An electron beam linear scanning mode for industrial limited-angle nano-computed tomography

Area of Science:

• Materials Science
• Physics
• Engineering

Background:

• Nano-computed tomography (nano-CT) is a high-resolution, non-destructive imaging technique vital for various scientific fields.
• Traditional nano-CT requires high mechanical precision for object manipulation during continuous rotation, posing challenges for stability and speed.

Purpose of the Study:

• To develop a faster and more stable nano-CT scanning method for industrial non-destructive testing.
• To investigate an electron beam linear scanning mode to circumvent mechanical vibrations and object movement.

Main Methods:

• An electron beam linear scanning mode was studied for nano-CT systems.
• An alternating iterative algorithm based on ℓ0 minimization was applied to limited-angle reconstruction problems.
• Experimental validation was performed to confirm the proposed method's feasibility.

Main Results:

• The electron beam linear scanning mode effectively avoids mechanical vibrations associated with continuous object rotation.
• The proposed method demonstrates potential for reducing scanning time in nano-CT.
• Limited-angle reconstruction with acceptable spatial resolution was achieved.

Conclusions:

• The electron beam linear scanning mode is a feasible advancement for nano-CT systems.
• This approach offers improved stability and efficiency for industrial non-destructive testing applications.
• Further research can explore optimizing scanning ranges for enhanced time savings.