The ‘terahertz gap’ – where until recently bright sources of light and sensitive means of detection were difficult to access – encompasses frequencies invisible to the naked eye in the electromagnetic spectrum, lying between microwave and infrared in the range from 0.3 to 3THz.

The company's technology has been used by the Naval Surface Warfare Command to test the presence of different types of plastic explosives through clothing, including PETN (Pentaerythritol tetranitrate).

[31] The absorption coefficient and refractive index[32] measured by terahertz pulsed spectroscopy can be used directly to obtain the high frequency-dependent complex conductivities of materials[33] in the 0.1 – 3 THz (3 – 100 cm−1) region of the electromagnetic spectrum.

[34] The technology has been applied to some areas of solid state physics research such as semiconductors,[35] high-temperature superconductors,[36] terahertz metamaterials, carrier density dynamics, graphene,[37] carbon nanotubes,[33] magnetism and more.

[43] The company's Chief Scientific Director, Sir Michael Pepper, explains that THz imaging can measure thickness across a substrate precisely and it can also obtain the density of the coating: "The radiation is reflected each time there is a change in material.

[44] Further research by the company and active collaboration with the University of Cambridge is aiming to develop a terahertz sensor that can be used to measure the quality of paint coatings on cars.

[35] THz time-domain reflectometry (TDR) offers significant advantages in imaging resolution compared to existing fault isolation techniques and conventional millimetre wave systems.

With such revolutionary concept, innovative design and superior performance, EOTPR will become an essential tool for microelectronic package fault isolation and failure analysis."