Unbeatable in automated terahertz measurement
Automated measurement solutions for non-destructive and contactless coating thickness measurement of organic single and multilayer coatings with THz
Advantages
- Market-leading measurement performance: Unsurpassed 6 THz bandwidth for highest precision and repeatability
- Vibration compensation: Unique high sampling rate with 1.6 KHz intrinsically compensates for all unwanted vibrations
- Patented Clean-Trace Technology: Dry air supply for best measurement performance and unaltered results
- Integrated 3D scanner: High-precision positioning sensors and distance measurement on various geometries, even for round surfaces and complex component shapes
- Electro-optical measurement: No moving mechanical parts guarantee maximum uptime
- Easy integration: Hardware and software designed for use on the robot as well as in control systems
- High reliability: Robust, low-maintenance and designed for uninterrupted 24/7 use
Features
- Spot size: ร 1 mm
- Bandwidth: 0,1 - 6 THz
- Acquisition speed (THz-Tracerate): 1.6 KHz
- Measurement time: 3 - 5 s
- Positioning time: < 1 - 3 s depending on the application with an accuracy of < 0.05 ยตm
- Measuring range: 10 ฮผm up to several millimeters
- Number of layers: Up to 7
- Measuring distance: 7 cm
- Accuracy: < 1 ฮผm or 1 % of the layer thickness, depending on the application
- Repeatability: < 0.1 ฮผm, depending on application
Applications
Terahertz technology opens up a wide field of applications in industrial measurement technology. What makes it so versatile? Terahertz waves are able to travel through all organic materials such as plastics, wood, ceramics, paints and many more, regardless of the base material - and they do so in a non-destructive and non-contact way. As a result, terahertz technology can be used to measure single and multi-layer systems for a wide variety of applications in diverse industries. From coating thickness measurement to material analysis - we have the solution for your measurement task.
1. Automotive
Coating thickness measurement of single or multi-layer systems
- Paint and laquer on any substrate such as metal, plastic, carbon, etc., exterior parts such as spoilers and bumpers, with plastic/carbon substrate, interior parts such as airbags, plastic composite parts, slush layers, fabric/organic on plastic composite parts, accessory parts, e. g. battery foils, bipolar plates of fuel cells, and others
Coating thickness measurement incl. Radar transmission and reflection
- Plastic exterior parts, e. g. bumpers
2. Aerospace
Coating thickness measurement of single or multi-layer systems
- Coatings on any substrate on a wide variety of aircraft parts
Detection of invisible defects and hidden corrosion
- Composite materials, various metal parts and critical components, wings, fuselage on carbon fibre composites, thermal barrier coatings in turbine blades, and others
3. Semiconductors
Testing of material properties and quality control
- Conductance of the plate, sheet resistance, mobility of free charge carriers (2DEG), charge carrier density, refractive index, dielectric parameters, ฮต' and ฮต'', absorbed power, single frequency characteristics
4. Polymers & Plastic extrusion
Measuring coatings in systems featuring single or multiple layers
- Battery foils, packaging, functional layers like EVOH, co-extrusion, e. g. flooring and films, bipolar plates of fuel cells, and others
Spotting invisible flaws as part of quality control measures
- Plastic parts, polymers and composites for function- and safety-critical components in all industries
5. Environment
Coating thickness measurement of single or multi-layer systems
- Bipolar plates of fuel cells, battery foils, photovoltaics, packaging, and others
Identifying hidden defects and quality verification
- Wind turbines, photovoltaics, and others
6. Material
Thickness measurement for both single and multi-layer coatings
- Wear protection Diamond like Carbon (DLC), packaging, special ink on paper, e. g. for money printing, inks and lacquers on paper and sheet metal, and others
Inspection of material traits and quality monitoring
- Conductance of the plate, sheet resistance, mobility of free charge carriers (2DEG), charge carrier density, refractive index, dielectric parameters, ฮต' and ฮต'', absorbed power, single frequency characteristics
- for applications such as
- 2D materials, e. g. semiconductors, graphene, photovoltaics, special ink on paper, paint and varnishes on paper and sheet metal and others
7. Ceramics
Measuring coatings in systems featuring single or multiple layers
- Ceramics on ceramics, e. g. enamel in the sanitary sector, ceramics on metal, e. g. thermal barrier coatings in turbine blades
Detection of invisible defects and quality control
- Ceramics on ceramics, e. g. enamel in the sanitary sector, ceramics on metal, e. g. thermal barrier coatings in turbine blades
Do you have other applications? Then contact us!
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How does the terahertz measurement work?
The terahertz technology used consists of electromagnetic waves with frequencies between 0.1 and 10 THz. Thus, this waves are shorter wavelength than microwaves but longer wavelength than visible light. The special feature of THz waves is that it can penetrate many layers. Each individual layer within a multilayer system can be detected separately.
The terahertz waves are generated in the measuring head by an optoelectronic unit with a laser. This emits an ultrashort terahertz pulse that is sent to the sample. This pulse penetrates the different layers. At the transitions between the layers, the waves are partially reflected. These echo pulses arrive at the detector with characteristic time differences. Since each layer and each material has specific absorption spectra, individual layers and their layer thickness can be precisely determined from the signal characteristics, and other parameters such as homogeneity and porosity can be inferred.
