Nanofabrication Techniques for Advanced Lithographic Systems

Nanofabrication for next-generation lithographic systems combines top-down and bottom-up approaches to produce increasingly complex patterns with sub-10 nm precision. Key strategies include optical lithography pushed to its physical limits by extreme ultraviolet (EUV) sources, electron-beam writing for maskless direct patterning, nanoimprint methods using hard and flexible stamps for high-throughput replication, and interference techniques to define large-area periodic arrays without individual mask elements. Recent innovations focus on hybrid workflows that integrate multiple exposure modalities, advanced resist chemistries offering high sensitivity and line-edge control, and novel pattern transfer schemes—such as anisotropic etching and dry plasma techniques—to preserve feature fidelity. Concurrent advances in mask fabrication, alignment systems and in situ metrology enable consistent critical-dimension control over wafer scales. These developments underpin a broad array of applications spanning photonic crystals, plasmonic sensors, quantum devices and ultradense electronic circuits, and illustrate the global effort to reconcile resolution, throughput and cost in practical manufacturing.

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Nanofabrication Techniques for Advanced Lithographic Systems publication trend

The graph below shows the total number of articles in nanofabrication techniques for advanced lithographic systems across all publications each year (not limited to Nature Index journals).

Technical terms

Electron-beam lithography: A maskless top-down technique using a focused electron beam to directly write nanometre-scale patterns in electron-sensitive resists.

Nanoimprint lithography: A high-throughput replication method in which a rigid or flexible mould is pressed into a resist to transfer nanoscale features by mechanical deformation.

Interference lithography: A maskless optical process that produces large-area periodic patterns through the controlled overlap of coherent light beams.

Extreme ultraviolet lithography (EUV): A photolithographic approach employing 13.5 nm radiation to reach feature sizes below 20 nm, relying on reflective optics and specialised resists.

Nanotransfer lithography: A fabrication strategy where prefabricated nanostructures are picked up from a donor substrate and relocated onto a receiver via an adhesive or carrier medium.

References

1. Illuminating Recent Progress in Nanotransfer Printing: Core Principles, Emerging Applications, and Future Perspectives. Advanced Science (2023).
2. High-fidelity and clean nanotransfer lithography using structure-embedded and electrostatic-adhesive carriers. Microsystems & Nanoengineering (2023).
3. Spatial modulation of nanopattern dimensions by combining interference lithography and grayscale-patterned secondary exposure. Light: Science & Applications (2022).