PORE SIZE DEPENDENT CRYSTALLIZATION ON POROUS SILICON MULTILAYERS

T. Gerecsei , I. Soussi , Thierry Cloitre (1) , Marta Martin Fernandez (1) , Frédérique Cunin (2) , H. Salehi (3) , Pierre-Yves Collart Dutilleul (3) , Frederic J. G. Cuisinier (3) , Csilla Gergely (1)

1 L2C - Laboratoire Charles Coulomb
2 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
3 LBN - Laboratoire de Bioingénierie et NanoSciences

Mineralization of calcium phosphate crystals was examined on porous silicon (PSi) scaffolds with respect to the dependence of crystal formation on the average pore size of PSi. PSi multilayer wafers fabricated by electrochemical etching were moni- tored via their reflectivity spectra over time in a biologically relevant osteogenic solution. The evolution of the mean refractive index of the PSi scaffold is the signature of the in situ crystals nucleation within the pores. Crystals were then characterized using atomic force microscopy (AFM), scanning electron microscopy (SEM) and Raman micro-spectroscopy. The results in- dicate that the average pore size of PSi highly influences nucleation and crystal formation.

Domaines: Biophysique [physics.bio-ph]

T. Gerecsei, I. Soussi, Thierry Cloitre, Marta Martin Fernandez, Frédérique Cunin, et al.. PORE SIZE DEPENDENT CRYSTALLIZATION ON POROUS SILICON MULTILAYERS. Porous Semiconductors - Science and Technology 2018, Mar 2018, La Grande Motte, Montpellier, France. ⟨hal-01745839⟩