So what is Terahertz sensing you ask? Well, it's a sophisticated technology that uses high-energy physics (in the electromagnetic spectrum) to perform high-precision, immersive measurements not capable by a single-sensing technology. And it's a solution we offer here at NDC Technologies.
What's great about our Terahertz sensor is that it enables you to make fast, completely safe, non-contact measurements across a wide range of process applications.
But what really sets this technology apart from others is its versatility. You can perform simultaneous, single- and multiple-layer measurements of thickness, basis weight and density not possible using other sensing technologies. This makes it ideal for applications such as plastic film and sheet extrusion, converting, foam products and coating measurements, to name a few.
The multi-layer capability ensures it can measure materials with variable amounts of filler, or thick layers of coating/pigment. Unlike many sensors, the Terahertz sensor operates effectively and accurately in challenging environments, including those with high dust content, high temperatures and hazardous locations.
How does Terahertz Technology Work?
Terahertz sensing functions in a similar way to ultrasonic devices. A harmless, very narrow electromagnetic pulse is generated and reflects back off the targeted material or product. The reflection times are then used to determine the measurement. The pulse uses low-power thermal energy and can penetrate most non-conductive materials.
Earlier, I mentioned that Terahertz sensing operates in the electromagnetic spectrum. Well, this is the region between the infrared and microwave frequency bands. This is from 0.1 to 10 THz with wavelengths from 3 to 3 to 0.03 mm – for those of you tech heads that want to know.
A Great Solution for Measuring a Wide Range of Applications
The powerful sensing capability of Terahertz technology makes it possible to make on-line measurements across a wide range of applications including:
- Rubber balance for wire calender
- Laminated protective foam packaging
- Multiple-layer, flexible food packaging
- Roofing products such as single layer thermoplastic
- Polyolefin (TPO) to multi-layer coated roofing to asphalt saturation for shingles
- Laminated medical products
- And more
The Benefits of Terahertz Sensing Are Multifold
Beyond its measurement versatility, Terahertz sensing is completely safe and does not require regulatory licensing. From a bottom-line perspective, Terahertz sensing also enables you to boost process efficiencies. And it can help you improve product quality and yield, as well as reduce scrap.
Sounds too good to be true? Learn more about this amazing technology here >>