Custom Event Setup

×

Click on the elements you want to track as custom events. Selected elements will appear in the list below.

Selected Elements (0)
    Login

    Cart

    Your cart is empty

    Instructions for Use (IFU) for UV / EB negative photoresists for Nanoimprint Lithography (NIL)

    These Instructions for Use (IFU) define the workflow logic, process boundaries and user responsibilities for UV / EB negative photoresists for nanoimprint lithography (NIL) and related nano / micro fabrication workflows using 3Dresyns® material systems designed for high-resolution pattern transfer, precision replication and research-oriented lithography routes.

    This document applies to 3Dresyns® material systems intended for nanoimprint lithography, UV NIL, EB-compatible negative photoresist workflows and related nano / micro fabrication processes, where feature fidelity, replication accuracy, development behavior and structural stability are critical.

    These workflows are process-dependent. Final performance depends on the complete material–substrate–stamp or mold–exposure–development–post-processing chain, including resin route, substrate preparation, coating thickness, imprint conditions, optical or EB exposure parameters, development route, cure state and final release behavior.

    1) Scope, limitations and responsibilities

    Scope of application

    • Applies to 3Dresyns® negative photoresist platforms for nano and micro fabrication.
    • Applies to workflows including nanoimprint lithography, microfabrication, micro-optics, photonics structures, microfluidic patterning and related precision replication routes.
    • Applies to rigid, glass-like, high-speed rigid, tough, bio-based, scaffold-oriented, hard-flexible, soft silicone-like and high-aspect-ratio ultra-rigid routes depending on the selected NMF material family.

    Limitations

    • This document provides a qualified workflow framework and process logic, but does not replace user-side validation.
    • Compatibility between the selected NMF material, the substrate, the stamp or mold, and the UV or EB route must always be confirmed by the user.
    • Application-specific validation, regulatory compliance and final product qualification remain the responsibility of the user or legal manufacturer.

    2) Governing principle

    In NIL and related nano / micro fabrication workflows, the final patterned structure is defined not only by the resist itself, but by the full process system:

    • selected 3Dresyns® NMF route,
    • substrate material and surface state,
    • coating thickness and coating uniformity,
    • stamp, mold or master geometry,
    • release and anti-stiction conditions,
    • UV or EB exposure conditions,
    • development and rinse workflow,
    • post-cure, drying and final structural stabilization.

    For this reason, final pattern quality cannot be predicted from photoresist identity alone.

    3) Material family logic

    The 3Dresyns® NMF platform spans a broad mechanical and functional range for NIL and nano / micro fabrication workflows:

    • Glass-like and rigid routes for hard, dimensionally stable and high-definition pattern transfer
    • High-speed rigid routes for faster curing and high-throughput development workflows
    • Tough routes for more damage-tolerant microstructured systems
    • Hard-flexible routes for controlled compliance with retained structural support
    • Soft silicone-like routes for compliant and elastomer-like microstructured concepts
    • Bio-based and scaffold-oriented routes for bio-oriented or research-specific nano / micro fabrication applications
    • High-aspect-ratio ultra-rigid routes for demanding aspect-ratio-sensitive structures

    The correct route should be selected primarily according to the target structural behavior after patterning and development, the required feature dimensions and the final process environment.

    4) Substrate and surface preparation

    Substrate preparation is a critical part of NIL and nano / micro fabrication workflows. The substrate should be evaluated for:

    • cleanliness,
    • surface energy,
    • planarity,
    • chemical compatibility with the resist,
    • adhesion requirements,
    • thermal and dimensional stability during process steps.

    Before use, the substrate should be:

    • clean and free of particles,
    • free of residual solvent, oil or contamination,
    • surface-prepared as needed for the selected resist route,
    • handled in a way that minimizes dust and defect formation.

    Insufficient substrate cleanliness or poor surface conditioning may reduce pattern fidelity, increase defects and compromise adhesion or release behavior.

    5) Coating and resist-film formation

    Film formation has a direct effect on imprint behavior, exposure response and final feature quality.

    The user should control:

    • film thickness,
    • coating uniformity,
    • edge effects,
    • presence of bubbles or particles,
    • solvent evaporation state where relevant,
    • equilibration time before imprint or exposure.

    Film thickness should be selected according to the target pattern depth, residual layer requirements and development strategy.

    Non-uniform coating may produce non-uniform replication, variable residual layer thickness and local dimensional deviations.

    6) Imprint and pattern-transfer logic

    These materials are intended for workflows requiring high-resolution pattern transfer and precision replication in nano and micro fabrication.

    Final result depends on:

    • master or mold feature fidelity,
    • imprint pressure or contact conditions,
    • fill behavior within micro and nano cavities,
    • air entrapment and degassing behavior,
    • residual layer control,
    • release quality after cure or development.

    Incomplete cavity filling, trapped air or poor residual-layer control may reduce feature transfer accuracy and repeatability.

    7) UV and EB process compatibility

    The NMF platform is positioned for UV and EB process compatibility. However, compatibility must always be validated under the real process conditions of the user.

    UV routes

    For UV-based workflows, the user should confirm:

    • wavelength compatibility,
    • irradiance and dose conditions,
    • penetration through the patterned geometry where relevant,
    • oxygen sensitivity where relevant,
    • cure completeness before release and development.

    EB-compatible routes

    For EB-related workflows, the user should confirm:

    • beam compatibility with the selected negative photoresist route,
    • dose window,
    • feature-size response,
    • substrate and resist charging behavior where relevant,
    • dimensional stability under the selected EB exposure route.

    UV compatibility and EB compatibility should not be assumed to be interchangeable without validation under the actual process architecture used by the user.

    8) Development and rinse workflow

    After exposure or imprint-assisted curing, the patterned material must be developed under controlled conditions appropriate to the selected route.

    Important variables may include:

    • developer chemistry,
    • development time,
    • rinse sequence,
    • agitation intensity,
    • temperature,
    • drying route,
    • pattern collapse risk during drying.

    Overdevelopment may damage fine features. Underdevelopment may leave residues and reduce fidelity. Drying conditions must be selected carefully to avoid deformation or collapse, especially in fine and high-aspect-ratio structures.

    9) High-aspect-ratio and fine-feature control

    High-aspect-ratio and sub-micron or nano-scale structures require tighter process control than larger microfeatures.

    Critical variables include:

    • mechanical stiffness of the selected resist route,
    • feature spacing,
    • pattern density,
    • residual layer thickness,
    • capillary effects during drying,
    • release stress during demolding or separation.

    For demanding aspect-ratio-sensitive structures, routes such as HAR1 Bio and other rigid or glass-like systems may be more suitable than soft or highly compliant routes, depending on the target geometry and release conditions.

    10) Mechanical and functional route selection

    The selected NMF route should be matched to the required post-patterning behavior:

    • HAR1 Bio and Glass-like1 Bio are relevant where high rigidity, high definition and strong structural retention are required.
    • HSR1 MF Bio is relevant where a high-speed rigid route is desirable.
    • T1 Bio is relevant where additional toughness is preferred over maximum stiffness.
    • HF1 Bio is relevant where controlled flexibility is beneficial.
    • PDMS-like A70 Bio, PDMS-like A50 Bio and PDMS-like A30 Bio are relevant where soft silicone-like behavior is required.
    • Bio Soya1 and Bio Scaffolds1 are relevant where bio-based or scaffold-oriented process logic is part of the development route.

    11) Release, anti-stiction and FDTS-related workflow note

    All visible 3Dresyns® NMF routes are positioned as containing hydroxyl groups suitable for bonding release agents such as perfluorodecyltrichlorosilane (FDTS).

    Release performance should still be validated under the real process conditions of the user according to:

    • stamp or mold material,
    • release-agent chemistry,
    • surface conditioning,
    • pattern density and depth,
    • release timing and separation route.

    Insufficient anti-stiction control may result in tearing, feature pull-out, incomplete demolding or progressive damage to the patterned surface.

    12) Validation and repeatability

    For repeatable NIL and nano / micro fabrication implementation, users should validate the workflow in stages:

    • Stage 1: validate substrate preparation and resist coating quality
    • Stage 2: validate first pattern transfer and cavity filling behavior
    • Stage 3: validate exposure and development conditions
    • Stage 4: validate release behavior and structural retention
    • Stage 5: validate repeatability over repeated runs or imprint cycles

    Repeatability should be confirmed using dimensional checks, microscopy, defect inspection and, where needed, optical, fluidic or functional screening.

    13) Failure modes and quick interpretation

    Common failure modes in NIL and related nano / micro fabrication workflows may include:

    • Incomplete filling: cavities not fully replicated, often related to viscosity, trapped air or insufficient imprint conditions
    • Poor feature fidelity: rounded, collapsed or poorly resolved features due to poor dose control, insufficient stiffness or poor development control
    • Residual layer mismatch: non-uniform or excessive residual layer affecting transfer quality
    • Release damage: tearing, sticking or pull-out during demolding or separation
    • Pattern collapse: deformation during development or drying, especially in high-aspect-ratio fine features
    • Poor repeatability: variable coating, exposure, development or release conditions across cycles

    Failure analysis should be based on the complete process chain, not only on the selected negative photoresist route.

    14) Typical applications

    • nanoimprint lithography,
    • microfabrication,
    • micro-optics,
    • photonics structures,
    • microfluidic patterning,
    • lithography R&D and academic research.

    15) Related workflow note on direct microfluidics printing

    Where the objective is direct printing of microfluidic structures rather than NIL or resist-based replication, users may also consider the dedicated 3Dresyns MF collection positioned for ultra-high-resolution and ultra-low-viscosity direct printing routes with SLA, DLP and LCD systems.

    16) Related documentation

    17) Governing principle

    These materials are designed for precision nano and micro fabrication logic. Final performance depends on the complete material–substrate–stamp or mold–exposure–development–post-processing workflow and must be validated by the user for the intended application.

    18) Need technical support?

    For technical guidance, material selection or custom developments for nanoimprint lithography and related nano / micro fabrication workflows, use technical support or contact info@3dresyns.com.

    From prototyping to industrial production, performance depends on materials, calibration and process control