Three-Dimensional Super-Resolution Morphology by Near-Field Assisted White-Light Interferometry.

Area of Science:

• Nanotechnology
• Microscopy
• Physics

Background:

• Far-field fluorescent microscopy enables nanoscale biological imaging.
• Scanning probe microscopy is common for 3D nanoscale imaging but is slow and invasive.

Purpose of the Study:

• Introduce a time-efficient 3D super-resolution microscopy method.
• Offer a non-invasive alternative to scanning probe microscopy for nanoscale imaging.

Main Methods:

• Utilize white-light interferometry for topography acquisition.
• Employ a microsphere superlens for lateral near-field imaging.
• Combine interferometry and near-field imaging for 3D super-resolution.

Main Results:

• Demonstrated nanoscale imaging of central processing units (CPUs).
• Achieved lateral resolution of ~50 nm and axial resolution of ~10 nm.
• Completed imaging within 25 seconds, 40x faster than atomic force microscopes.

Conclusions:

• NFWLI is a practical method for high-speed, non-toxic 3D nanoscale imaging.
• The technique offers significant advantages over existing microscopy methods.