Fig. 2
From: Improvement of biohistological response of facial implant materials by tantalum surface treatment
Transmission and scanning electron microscopy images of a tantalum implanted ePTFE implant material. A Transmission electron microscopy images: (a) A protective carbonic layer was formed on the implant material surface after treatment with Ta. (b) Ta layer after implantation. (c) ePTFE implant material. B Scanning electron microscope images: long two-headed arrows, protective carbonic layer. Short two-headed arrow, Ta layer after ion implantation. (d) ePTFE implant material