λ/12 Super Resolution Achieved in Maskless Optical Projection Nanolithography for Efficient Cross-Scale Patterning.

Area of Science:

• Materials Science
• Nanotechnology
• Optical Engineering

Background:

• Device miniaturization and integration necessitate advanced patterning techniques for micronano-cross-scale structures.
• Traditional lithography has been crucial for creating functional micronanoscale structures.
• A need exists for efficient and versatile patterning methods capable of addressing cross-scale requirements.

Purpose of the Study:

• To propose and demonstrate a novel maskless optical projection nanolithography (MLOP-NL) technique.
• To achieve efficient cross-scale patterning for fabricating micronano-hybrid structures.
• To explore the potential of MLOP-NL in creating complex multiscale integrated microsystems.

Main Methods:

• Development and implementation of the maskless optical projection nanolithography (MLOP-NL) technique.
• Utilizing a single exposure to achieve super-resolution patterning beyond the optical diffraction limit.
• Controlling exposure conditions to fabricate multiscale two-dimensional micronano-hybrid structures.

Main Results:

• Achieved a minimum feature size of 32 nm, representing λ/12 super resolution.
• Demonstrated the capability to fabricate micronano-hybrid structures with dimensions ranging from tens of nanometers to hundreds of micrometers.
• Successfully fabricated complex two-dimensional structures with high precision and efficiency.

Conclusions:

• The MLOP-NL technique offers an efficient and powerful solution for cross-scale patterning.
• This method enables the fabrication of structures with both large-scale dimensions and nanometer-level precision.
• MLOP-NL holds significant potential for the advancement of multiscale integrated microsystem fabrication.