Artificial skin to sense mechanical stress by visible light emission
Abstract
The idea and successful practice of a stress sensor to sense mechanical stress by an artificial skin, i.e., self-diagnosis thin film, has been realized, through the fabrication of a high-luminescence thin piezoelectric film which can reproducibly emit strong visible light upon stressing. The strongest luminescent film consists of nanosized crystallites of ZnS doped with 1.5 at. % Mn, in which Mn acts as the emitting center. The intensity of the emitted luminescence responds to stress applied directly onto the film or to the underlying material reversibly and reproducibly, so it can be used as an artificial skin to sense mechanical stress.
- Publication:
-
Applied Physics Letters
- Pub Date:
- March 1999
- DOI:
- 10.1063/1.123510
- Bibcode:
- 1999ApPhL..74.1236X
- Keywords:
-
- 07.07.Df;
- 07.10.Pz;
- 78.66.Hf;
- 78.20.Hp;
- 78.60.-b;
- 77.84.Bw;
- Sensors;
- remote sensing;
- Instruments for strain force and torque;
- II-VI semiconductors;
- Piezo- elasto- and acoustooptical effects;
- photoacoustic effects;
- Other luminescence and radiative recombination;
- Elements oxides nitrides borides carbides chalcogenides etc.