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Microfluidic bonding for high-performance and scalable devices

Advanced microfluidic bonding for polymer and hybrid materials in diagnostics, biotech, and lab-on-chip applications

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Microfluidic bonding is a critical factor in the performance, reliability, and manufacturability of microfluidic devices. Bondus specializes in microfluidic bonding technologies that ensure strong, uniform sealing without damaging microstructures or affecting device functionality.

Our bonding solutions are designed to support both microfluidics prototyping and scalable manufacturing, enabling consistent device performance while scaling from early development to high-volume

Discuss your bonding challenge


Understanding the role of bonding in microfluidic device performance

Microfluidic bonding is the process of sealing microstructured layers to create enclosed channels for controlled fluid flow. These channels are essential for applications in diagnostics, lab-on-chip systems, and analytical devices.

The quality of bonding directly determines device performance. Even small defects can result in leakage, channel deformation, or inconsistent flow behavior, making bonding one of the most critical steps in microfluidic device development.

Effective bonding must ensure:

  • Strong and uniform sealing
  • Preservation of microchannel geometry
  • Chemical and mechanical stability
  • Compatibility with selected materials

Why conventional bonding methods fail in microfluidic devices

Traditional bonding methods are often not designed for the precision and sensitivity required in microfluidic systems. As a result, they introduce limitations that impact both performance, stability and scalability

Channel deformation

Thermal or pressure-based bonding can alter microchannel geometry, affecting flow accuracy and device functionality.

Leakage and weak interfaces

Inconsistent bonding leads to leakage or reduced reliability, both in storage and under operational conditions.

Material incompatibility

Different polymers and hybrid materials require tailored bonding approaches, making standard methods insufficient.

Limited scalability

Processes that work in prototyping often break down in production due to variability and lack of control, or simply a lack of scalability.

Our microfluidic bonding technology and process control

Bondus has developed advanced microfluidic bonding processes that address the limitations of conventional methods. Our approach is focused on maintaining microstructure integrity while ensuring reliable and repeatable bonding outcomes.

Key advantages:

No damage to microstructures
Our bonding methods preserve microchannel geometry, ensuring consistent and predictable fluid behavior.

Compatibility with polymer and hybrid materials
We enable flexible material selection and support complex multi-material device architectures, such as glass or silicon to a polymer.

High bonding strength and reliability
Our processes deliver uniform sealing performance across the entire device.

Repeatable and controlled processes
Bonding is optimized for both prototyping and production, ensuring stability and reproducibility.

Material compatibility and multi-layer microfluidic integration

Microfluidic devices often involve multiple materials and layered structures, requiring precise control over bonding interfaces.

We support bonding across a wide range of materials used in diagnostics and lab-on-chip applications, ensuring compatibility with both device performance and manufacturing requirements.

Capabilities include:
  • Polymer microfluidic bonding for a broad range of relevant polymers, such as COC, PMMA, PC, PS, PEI and more
  • Hybrid material bonding for multi-layer systems , such as glass and silicon chips or even elastomers and membranes
  • Bonding of complex microfluidic geometries
  • Integration of bonded layers into complete systems

Our expertise allows us to select and optimize the right bonding strategy for each application.

Designing bonding processes for scalable microfluidic manufacturing

A key challenge in microfluidics is ensuring that bonding methods developed during prototyping remain viable in production.

At Bondus, bonding is integrated into the full development and manufacturing workflow. This ensures that bonding processes are aligned with scalability requirements from the start.


Our approach enables:
  • Seamless transition from prototyping to manufacturing
  • Reduced need for redesign during scale-up
  • Consistent device performance across production volumes
  • Faster and more predictable development timelines

Applications where reliable microfluidic bonding is critical

Our microfluidic bonding solutions are used in applications where precision, reliability, and scalability are essential.

Examples include:

  1. Point-of-care diagnostics
    Reliable bonding for microfluidic cartridges used in rapid testing systems.
  2. Lab-on-chip systems
    Bonded microfluidic devices for compact analytical platforms.
  3. Biosensors
    Integration of microfluidic components for sensitive detection systems.
  4. Microfluidic flow systems
    Flow cells and bonded manifolds requiring precise control of fluid distribution and leak-free performance under varying conditions.

Why Bondus for microfluidic bonding


  • Specialized expertise in microfluidic bonding technologies
    We have developed unique and proprietary bonding processes, design for scalable production specifically for micro-sized devices.
  • Proven solutions for complex microfluidic designs
    Our processes support advanced geometries and challenging material combinations.
  • Focus on scalability from day one
    We ensure bonding methods are compatible with future production requirements and a high level of automation.
  • Reliable partner from development to production
    We support the full lifecycle of microfluidic device development and manufacturing.

Solve your microfluidic bonding challenges

Experiencing issues with leakage, deformation, or unreliable performance? Bondus helps you develop bonding solutions that ensure consistent, high-performance microfluidic devices from prototype to production.

Discuss your bonding challange


Frequently asked questions

Questions about microfluidic bonding

Microfluidic bonding is the process of sealing microstructured layers to create enclosed channels for fluid control in microfluidic devices.

Bonding directly affects device performance, reliability, and scalability. Poor bonding can lead to leakage, deformation, or inconsistent results.

Common materials include polymers such as PMMA, PC, PS or COC/COP. In hybrid systems we can integrate glass or silicon devices into polymer product. The bonding method must be tailored to material properties and application requirements.