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Three-Omega Characterization Systen

  • Category: Thermal material characterization
  • Standards:  —
  • Targets: Liquid and viscous material
  • Min thickness: 500 µm
  • Temperature range: 25–150°C


Three-Omega Characterization System

Determination of time- and temperature-dependent thermal material properties of viscous materials like gels and pastes up to liquids is methodically highly sophisticated. Especially thermal conductivity and diffusivity often require considerable effort to be determined precisely. TOCS utilizes the 3-omega method for determination of both material parameters and allows thermal characterization of liquid to viscous material samples within few minutes. Samples are simply applied on top of the innovative, easy-to-handle characterization chip and the values for thermal conductivity and diffusivity are obtained using the convenient electrical measurement program of TOCS.

A straightforward approach

TOCS is a complete solution, containing characterization chips, chip holder, electronics and user-friendly measurement and analysis software. The system is ready-to-use and a material sample can be characterized within minutes.

The glass chips are disposable but may preferrably be cleaned and re-used. The chip holder is compact and plugged into the rack like a key card. For measurements at elevated temperatures, the chips contain two heaters on opposing sides that allow heating up to 250°C.

The analysis software provides easy control over the whole measurement process which is complete within a few button presses. Thanks to a magnetic clip system, changing chips and samples is a matter of seconds.

On-chip heating

By default, TOCS works with Nanotest's TOCS 3-omega characterization chips (TOC-M3) that provide three identical sensors and two meander-shaped heaters that can either set up a homogeneous but elevated temperature at the sample or generate a temperature gradient through the sample.

This allows to test material under different conditions, monitor curing behavior and measure temperature-dependency spatially resolved with three sensors simultaneously.

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