Flexible thermo-plasmonics: mechanically actuated control of the photo-induced heat generation.
Caputo R., Palermo G., Cataldi U., Condello A., B"urgi T., Umeton C., De Luca A.
VI - Fisica applicata, acceleratori e beni culturali
Aula 29C-2 - Giovedì 20 h 09:00 - 13:00
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Physical control of the photo-induced heat generated by an amorphous arrangement of homogenously distributed gold nanoparticles, immobilized on a biocompatible flexible elastomer, is presented. Application of a mechanical strain to the PDMS tape, supporting the particles, leads to a modification of their inter-distance and a change of the photo-generated heat. A model of the system based on the Mie Theory has been implemented through a finite element method. Numerical results are in quantitative agreement with the experimental ones. Application of this system is envisioned as optically-active thermal patches, usable for biomedical applications, flexible platforms for microfluidics and lab-on-a-chip devices.