Surface sterilization and modification

The dose of high-energy radiation (e.g. gamma or electron radiation) applied to curved 3D free-form surfaces can be measured using inorganic phosphor coatings. Following pulsed laser excitation, these display a change in luminescence life time depending on the recorded radiation dose. The dose information in the 3D dosimeter can therefore be optically read from any form of surface with a spatial resolution of 200 µm.

Relevant parameters

• Maximum sample size: 300 x 300 x 330 mm³
• Resolution, lateral: 200 µm
• Dose dynamic range: 0–250 kGy
• Dose resolution: up to 80 kGy: 1 kGy; from 80 kGy: 5 kGy
• Measurable 3D profiles: automated, customizable per software update

Equipment site

Fraunhofer IZI, main building, 2nd floor, B2 laboratory

Person responsible for equipment / contact person

Dr.-Ing. Christiane Schuster
Fraunhofer IKTS
Department of Testing of Electronics and Optical Methods
Optical Test Methods and Nanosensors Unit

Phone +49 351 88815-674
Send an e-mail

EBLab 200, Ebeam Technologies

With this laboratory system, different test specimens (max. DIN A4, 50 mm high) can be irradiated with high-energy electrons. To this end, the test specimen is passed underneath the electron source via a carrier system, allowing the application of different doses and penetration depths. The diverse fields of application across different industries includes the sterilization of packaging and surfaces, the inactivation of microorganisms to produce vaccines, as well as the specific modification of materials properties using electron irradiation, e.g. by linking polymers or changing the optical properties of phosphors.

Relevant parameters

• Voltage range: 70–200 kV
• Maximum power: 2.25 kW
• Maximum beam current: 1–20 mA (voltage dependent)
• Sample transportation velocity: 3–30 m/min
• Sample size: DIN A4 (216 x 297 mm), adjustable in height up to 50 mm (in steps of 5 mm)
• Nitrogen inerting: minimum oxygen concentration (< 50 ppm)

Equipment site

Fraunhofer IZI, main building, 2nd floor, B2 laboratory

Person responsible for equipment / contact person

Dr.-Ing. Christiane Schuster
Fraunhofer IKTS
Department of Testing of Electronics and Optical Methods
Optical Test Methods and Nanosensors Unit

Phone +49 351 88815-674
Send an e-mail