Project at LZH to develop laser marking process for glass

Laser Zentrum Hannover (LZH) is working on a laser marking and identification process which, among other things, can be used to make it harder to counterfeit medications in glass ampoules.

LZH scientists working on the project, ‘Glass marking using the laser as a safety, identification and design element’, are developing a process for anti-counterfeit marking on both flat and curved glass surfaces. The laser marking process can be used to generate decorative writing, a number, or a 2D barcode directly in the glass. The markings are only a few nanometres deep.

Flexibility of the laser process is the main advantage, since each part can be individually marked, for example with a serial number, without effort or extra cost.

Up until now, there has been no clear identification process for markings on glass. Thus, in this project a special process will be developed with which each part is given its own individual fingerprint. The LZH is also developing a reading process for invisible markings. In combination with each other, they will be able to reach a higher anti-counterfeit rate than conventional processes.

The project is subsidised by the German Federal Ministry for Economic Affairs and Energy within the central innovation programme for middle-sized businesses.

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