Zoterac · Project

Room-Temperature Terahertz Chips for Security Screening and Quality Control

digitalPrototypeTRL 3Thin data (2/5)

There's a slice of the electromagnetic spectrum — between infrared and microwaves — that can see through packaging, clothing, and even skin, but we've never had a cheap, compact chip that works at room temperature to use it. Current terahertz devices need expensive cooling or bulky lab setups. Zoterac swapped the usual gallium arsenide material for zinc oxide, which handles heat twice as well, and built tiny semiconductor lasers and detectors that work in this "terahertz gap." Think of it as giving industries X-ray-like vision without the radiation, all from a chip that fits in your hand.

By the numbers

twice

ZnO optical phonon energy compared to GaAs

milliWatt

Target THz emitter output power at room temperature

Consortium partners

Countries represented (AT, CH, ES, FR)

Demonstration deliverables completed

Industry participation ratio in consortium

The business problem

What needed solving

Industries need compact, affordable terahertz devices for security screening, non-invasive quality control, and next-generation wireless — but today's terahertz technology requires expensive cryogenic cooling and bulky equipment, keeping it locked in specialized labs. There is no room-temperature semiconductor source available commercially, creating a gap between proven terahertz applications and real-world deployment.

The solution

What was built

The project delivered 4 key demonstrations: terahertz quantum cascade lasers (QCLs), quantum well infrared photodetectors (QWIPs), quantum cascade detectors (QCDs) operating at terahertz frequencies, and terahertz light emitting devices — all based on ZnO/ZnMgO semiconductor heterostructures designed for higher operating temperatures than conventional GaAs devices.

Audience

Who needs this

Security scanner manufacturers (airport/border screening equipment)Non-destructive testing equipment companies (pharmaceutical, food, materials inspection)Telecom R&D divisions exploring post-5G terahertz wireless linksMedical imaging device manufacturers seeking non-ionizing alternatives to X-raySemiconductor foundries looking for next-generation optoelectronic materials

Business applications

Who can put this to work

Security & Border Control

enterprise

Target: Security screening equipment manufacturers

If you are a security equipment manufacturer struggling with bulky, expensive terahertz scanners that need constant cooling — this project demonstrated ZnO-based terahertz emitters designed to operate at room temperature with milliWatt output power. That means smaller, cheaper screening devices that can detect concealed objects or substances without ionizing radiation, and without cryogenic cooling systems driving up your maintenance costs.

Pharmaceutical & Food Quality Control

mid-size

Target: Non-destructive testing and inspection equipment companies

If you are a quality control equipment maker looking for non-invasive inspection methods — Zoterac built terahertz light emitters and quantum detectors that can see through packaging without opening it. Terahertz waves can identify chemical composition and detect defects, giving your inspection line a tool that works at room temperature instead of requiring expensive cooling to cryogenic levels.

Telecommunications

enterprise

Target: Wireless infrastructure and component suppliers

If you are a telecom component supplier exploring next-generation wireless bandwidth beyond 5G — this project demonstrated quantum cascade devices at terahertz frequencies using zinc oxide semiconductors. Terahertz wireless links could carry far more data than current microwave bands, and Zoterac's room-temperature approach using ZnO with twice the optical phonon energy of GaAs removes the biggest barrier to compact, deployable terahertz transmitters.

Frequently asked

Quick answers

What would it cost to license or access this terahertz technology?

No pricing or licensing terms are available in the project data. The consortium is entirely academic (6 partners across 4 countries, zero industry participants), so commercialization terms would need to be negotiated directly with the coordinator CNRS in France. Expect early-stage licensing discussions typical of university-originated IP.

Can this technology scale to industrial production volumes?

The project demonstrated proof-of-concept devices including terahertz quantum cascade lasers, quantum well infrared photodetectors, quantum cascade detectors, and light-emitting devices. However, with zero industrial partners in the consortium and no pilot manufacturing evidence, significant engineering work remains to move from lab demonstrations to volume production.

Who owns the intellectual property from this project?

IP from EU-funded RIA projects is typically owned by the partners who generated it. The 6-partner consortium includes CNRS (France) as coordinator, plus 4 universities and 1 research organization across France, Austria, Switzerland, and Spain. Any licensing would likely require negotiation with multiple IP holders.

How does this compare to existing terahertz technology?

Current commercial terahertz devices rely on GaAs quantum cascade lasers that need cryogenic cooling to operate. Zoterac's ZnO-based approach exploits the fact that ZnO has twice the optical phonon energy of GaAs, enabling operation at much higher temperatures — potentially room temperature with milliWatt output power. This is the core competitive advantage.

What is the timeline to a market-ready product?

The project closed in February 2020 after running since September 2015. The 4 demonstration deliverables confirm lab-level device operation, but no commercial prototypes or field trials are documented. Based on available project data, a market-ready product would likely require several more years of engineering and industrial partnership development.

Are there regulatory hurdles for terahertz devices?

Terahertz radiation is non-ionizing, which gives it a regulatory advantage over X-ray-based scanning for security and medical applications. However, specific deployment regulations vary by country and application. The project data does not address regulatory compliance directly.

Consortium

Who built it

The Zoterac consortium is a purely academic grouping: 5 universities and 1 research organization across 4 European countries (Austria, Switzerland, Spain, France), coordinated by CNRS, France's largest public research body. With zero industrial partners and zero SMEs, this project was designed entirely for fundamental scientific breakthrough rather than near-term commercialization. For a business looking to adopt this technology, the absence of industry partners means there is no existing commercial pathway — but it also means the IP landscape may be simpler, with licensing negotiations limited to academic institutions. Any company interested would essentially be the first mover in bringing this ZnO terahertz technology from lab to market.

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRSCoordinator · FR
TECHNISCHE UNIVERSITAET WIENparticipant · AT
UNIVERSITE COTE D'AZURthirdparty · FR
EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICHparticipant · CH
UNIVERSITE PARIS-SACLAYparticipant · FR
UNIVERSIDAD POLITECNICA DE MADRIDparticipant · ES

How to reach the team

CNRS (Centre National de la Recherche Scientifique), France — use SciTransfer's coordinator lookup service to find the project lead's direct contact.

Order a report on this consortium See CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS profile →

Next steps

Talk to the team behind this work.

Want to explore licensing ZnO terahertz technology for your product line? SciTransfer can connect you directly with the Zoterac research team and help navigate multi-partner IP negotiations.

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