Working Principle of the Pressure-Sensitive Memory Materials (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Working Principle of the Pressure-Sensitive Memory Materials

Caption

In the first step, the luminescent material is illuminated with UV or blue light. Mainly traps of type A are filled with electrons. In step 2, the materials light up where pressure is applied. In addition, part of the trapped electrons are transferred from trap A to trap B. Trap B is very stable keeping the electrons stored for up to three days (step 3). In step 4, the material is scanned with an infrared laser beam. The areas where pressure had been previously applied, light up in green once more. When the material is illuminated again, the whole process can be repeated.

Credit

by LumiLab research group, Department of Solid State Sciences, Ghent University

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