In nanoimprint lithography (NIL), materials define the process window. Resin behaviour directly impacts replication fidelity, throughput, defectivity, and ultimately whether a prototype can transition into stable, high-volume manufacturing.

With more than 25 years of expertise across rolling nanoimprint systems, UV-curable chemistry, and process engineering, Stensborg has evolved from broad material exploration to a focused, production-ready consumables platform, embedded within a complete nanoimprint development ecosystem. The result is a structured pathway from early validation to industrial scale.

Image credit: Stensborg

Why material selection becomes the bottleneck in NIL scale-up

A common pattern in nanoimprint development:

1. A structure is successfully fabricated at lab scale

2. Replication is validated on a prototype system

3. Scale-up introduces defects, variability, and yield loss

In most cases, the limitation is not tooling… it is material-process mismatch.
A high-performance UV-NIL resin must balance multiple interdependent parameters:

  • Viscosity vs. feature size: ensure complete cavity filling without voids or air entrapment.

  • Curing kinetics: rapid UV crosslinking while maintaining dimensional stability.

  • Adhesion vs. release: ensure substrate bonding with controlled demoulding forces.

  • Functional/ application-dependent properties: ensure desirable results in optical clarity, refractive index, mechanical durability, or biocompatibility.

  • Template compatibility: must not chemically react with or damage the original master.

In rolling nanoimprint lithography, additional constraints apply. Transparent templates and substrates are often required to enable effective UV curing through the nip, and viscosity must be tightly matched to feature size—typically lower viscosity for submicron structures and moderate viscosity for larger geometries.
Substrate interaction is another critical factor. Adhesion behaviour on PET, PC, silicon, or coated films must be validated early, as it directly affects yield and long-term process stability.
Without a structured approach, balancing these parameters can significantly slow development and increase risk during scale-up.

Maturing our NIL materials portfolio from 250+ formulations in-house

Stensborg’s consumables portfolio is built on extensive in-house formulation and validation. More than 250 resin systems have been developed and tested, covering feature resolutions from approximately 5 nm to 100 µm. Today, 20–25 formulations remain in active production use, forming a validated and application-flexible material base.

This dataset has been consolidated into a high-performance resin portfolio, designed for consistent replication and reliable scale-up across R&D and industrial environments.

Stensborg Light-Curing Resins for Rolling Nanoimprint Lithography

These formulations are not “generic materials”—they are process-matched chemistries, engineered specifically for rolling nanoimprint systems.

Beyond materials: nanoimprint process development as an integrated partner

A common misconception for optical engineers scaling metasurfaces with NIL or photonics teams moving to pilot production is that selecting a resin is a one-time decision. In practice, material selection is iterative and tightly coupled to process conditions.

At Stensborg, consumables are deployed within a structured development framework. This approach is designed for teams looking to scale UV nanoimprint lithography from prototype to high-volume manufacturing, with validated materials, process development, and roll-to-roll system integration.

We operate as a nanoimprint development partner, supporting customers from early-stage validation through to high-volume roll-to-roll manufacturing system deployment.

Process Matching & Validation

  • Correlation of resin properties with process parameters (speed, pressure, UV dose).

  • Substrate compatibility testing (adhesion layers, coatings).

  • Defect analysis (voids, incomplete fill, demoulding artefacts).

  • Yield optimisation for repeatable replication.

Nanoimprint Process Design

  • Iterative refinement of imprint conditions.

  • Scaling strategies from R&D to industrial throughput.

  • Tolerance analysis and structure validation.

Template Engineering & Mastering Support

  • Fabrication of durable working templates.

  • Master protection through replication hierarchy.

Laboratory & Engineering Support

  • Cleanroom processing and substrate preparation.

  • Optical and topographical characterisation.

  • Senior engineering consulting for custom development.

This integrated methodology (see our complete engineering services) ensures that material behaviour is always validated within real process conditions, not in isolation. This allows Stensborg to reduce development cycles from months to weeks and de-risk scale-up by validating materials and processes together, ultimately accelerating time-to-market.

Application-driven material engineering in roll-to-roll nanoimprint lithography

Final material selection is dictated by functional requirements. Stensborg supports development across a wide range of nanostructured applications:

  • Metasurfaces & metalenses: Subwavelength structures for advanced optical control.

  • Diffractive optical elements (DOEs): Gratings, beam splitters, and Fresnel optics.

  • Holographic optical elements (HOEs): High-efficiency structures for imaging and displays.

  • AR/MR waveguides: Nano-gratings for light coupling and beam shaping.

  • Photonic integrated circuits (PICs): Functional nanostructures for silicon photonics.

  • Photovoltaics & optical coatings: Light-management and spectral control surfaces.

  • Battery & energy systems: Functional nano-patterned interfaces.

  • Microfluidics & lab-on-chip: Structured channels and diagnostic platforms.

  • Automotive functional surfaces: Nano-structured optics and coatings for sensors and lighting.

A scalable solution for your nanoimprinting deployment

As nanoimprint lithography moves into high-volume manufacturing, performance is defined by the stability of the full process window rather than individual components.

Reducing 250+ formulations to a focused set of core resins is not simplification, but standardisation built on validated process understanding across viscosity, curing kinetics, substrate interaction, and feature fidelity. The result is a consumables portfolio that enables faster implementation, improved process stability, and smoother scale-up from desktop R&D systems to industrial roll-to-roll production.

In nanoimprint lithography, success is not determined by materials alone —but by how well materials, machinery, and process are engineered together.