Liquid Metal Thermal Interface
Extremely High Thermal Conductivity
Ultra-Low Thermal Resistance
Excellent Surface Wetting Behavior
Requires Controlled Application Environment
Liquid Metal Thermal Interface

LM Series Liquid Metal Interface for Ultra-Low Thermal Resistance

The LM Series is designed for demanding thermal interfaces where conventional pastes or pads reach their practical limits. Based on gallium alloy liquid metal technology, it provides extremely efficient heat transfer between compatible metal contact surfaces and supports high-performance cooling concepts in electronics, power modules, computing systems and specialized industrial assemblies.

Core Performance Profile

Thermal Conductivity Range30–80 W/mK
Interface BehaviorUltra-Thin BLT
Surface UseCopper / Nickel-Plated
Application LevelProfessional / OEM
Extremely High Thermal Conductivity Metallic heat transfer path for high heat flux applications where conventional polymer-based TIMs become the limiting thermal interface.
Ultra-Low Thermal Resistance Supports ultra-thin bond lines under controlled mounting pressure to reduce the interface bottleneck between heat source and cooler.
Excellent Surface Wetting Behavior Optimized spreading on compatible copper and nickel-plated contact surfaces for direct metal-to-metal interface performance.
Controlled Application Required Electrically conductive liquid metal material for professional integration with defined surface compatibility, dosing and protection concept.

Liquid Metal TIM for High-Density Thermal Interfaces

The LM Series is intended for applications where the thermal interface itself has to contribute the lowest possible thermal resistance. Unlike conventional thermal pastes that rely on ceramic or metal oxide fillers inside a polymer matrix, liquid metal interfaces are metallic and therefore enable a much higher effective heat transfer capability when used on compatible surfaces.

This makes the LM Series suitable for engineering projects, high-performance electronics, selected OEM applications, test environments, laboratory assemblies and cooling systems where every reduction in interface resistance can improve temperature stability, performance headroom or long-term thermal consistency.

Typical Application Areas

  • High-performance computing interfaces between heat source and nickel-plated cooling surface.
  • Power electronics assemblies requiring very low interface resistance and controlled contact pressure.
  • Industrial thermal testing, validation setups and comparative TIM performance evaluation.
  • Specialized cooling modules where copper or nickel-plated surfaces are used as direct contact materials.
  • OEM and project-based cooling concepts where liquid metal can be applied under defined process conditions.

Engineering Considerations

Liquid metal is not a drop-in replacement for every thermal paste application. It requires compatible metal surfaces, controlled dosing, protection against unintended contact with electrical components and a clear understanding of material behavior over time.

Technical Profile

Material TypeGallium-Based Liquid Metal
Thermal Conductivity Range30–80 W/mK
Thermal ResistanceUltra-Low
Electrical ConductivityConductive
Surface CompatibilityCopper / Nickel-Plated
Not Compatible WithAluminium
Application MethodControlled Thin Layer
Typical Use LevelProfessional / OEM
Important Handling Notice Liquid metal is electrically conductive and must not contact PCB traces, SMD components, connectors or exposed electrical contacts. It should only be used on compatible copper or nickel-plated surfaces. Do not apply on aluminium or aluminium direct-touch heatpipe surfaces.
Application Fit Matrix

Where Liquid Metal Creates Measurable Thermal Advantage

LM Series should be selected when the interface layer is a major thermal bottleneck and when the surrounding mechanical, electrical and material conditions allow a controlled liquid metal implementation.

High-Performance Computing

Suitable for selected CPU, GPU, accelerator and server cooling interfaces where a very thin metallic interface layer can reduce temperature rise under sustained thermal load.

CPU / GPU Server HPC

Power Electronics

Applicable in controlled assemblies where metal-to-metal interfaces, defined mounting pressure and electrical isolation strategy are already part of the system design.

Power Module IGBT MOSFET

Thermal Validation

Useful in laboratory and engineering environments to evaluate the practical limit of interface resistance and compare thermal stack performance against paste, pad or PCM solutions.

Testing R&D Benchmarking
Compatibility & Risk Control

Surface Compatibility Is Critical for Liquid Metal Integration

Liquid metal performance depends not only on thermal conductivity, but also on chemical compatibility, surface finish, contact pressure, oxidation behavior and protection against unwanted spreading.

Recommended Surface Conditions

  • Copper contact surfaces in controlled assemblies.
  • Nickel-plated cold plates, vapor chambers or heatsink bases.
  • Flat, clean and residue-free metallic contact surfaces.
  • Stable mechanical pressure and minimal uncontrolled movement.
  • Defined process environment for application, inspection and handling.

Not Recommended / Must Be Avoided

  • Aluminium contact surfaces or aluminium direct-touch heatpipe bases.
  • Open PCB areas without sufficient electrical protection.
  • Uncontrolled consumer assembly without containment strategy.
  • Interfaces with high risk of leakage, pumping or migration.
  • Applications where the TIM may contact exposed SMD components or traces.
Process Integration

Recommended Engineering Workflow for LM Series Projects

For industrial use, liquid metal should be treated as a controlled interface material, not as a general-purpose paste.

Surface Review

Verify base material, plating, surface flatness, surface roughness and long-term compatibility.

Electrical Risk Check

Identify exposed contacts, PCB traces, SMD areas and possible migration paths before integration.

Dosing & Application

Define minimal application volume, spreading method, inspection process and acceptable bond line condition.

Thermal Validation

Validate temperature behavior under real load, thermal cycling and mechanical assembly conditions.

LM Series as Part of a Complete Thermal Stack

In many industrial cooling projects, the best result is not achieved by selecting one material alone, but by optimizing the full thermal path. LM Series can be evaluated together with heatsinks, cold plates, fans, vapor chambers, mounting pressure, surface finish and system airflow.

  • Interface material selection based on heat flux and surface design.
  • Comparison against thermal paste, PCM, pads and graphene heat spreaders.
  • Support for OEM, ODM, private label and project-specific packaging concepts.
  • Evaluation of application process, handling safety and documentation needs.
  • Integration into electronics, power systems and industrial cooling assemblies.

Need Liquid Metal Evaluation for an Industrial Cooling Project?

IPROJEX can support material selection, application concept, compatibility review and project-specific supply models for liquid metal thermal interface applications.

Request Project Review