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Quantification of dose in plasma immersion ion implantation of polymer bone scaffolds: Probe diagnostics of a pulsed dielectric barrier discharge
Author(s) -
Katsifis Georgio A.,
Suchowerska Natalka,
McKenzie David R.
Publication year - 2020
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.202000113
Subject(s) - dielectric barrier discharge , materials science , langmuir probe , plasma , ion , polymer , plasma immersion ion implantation , dielectric , absorption (acoustics) , ion implantation , analytical chemistry (journal) , optoelectronics , plasma diagnostics , chemistry , composite material , chromatography , physics , organic chemistry , quantum mechanics
We demonstrate the ability of plasma immersion ion implantation to treat all surfaces of a porous polymer structure designed to act as a bone scaffold. We prove that the internal pore surfaces receive ion bombardment by examining the ultraviolet (UV) absorption spectrum of a thin polymer sheet placed inside pores of different diameters and locations. The current–voltage characteristics of a Langmuir probe in a pulsed dielectric barrier discharge are studied and interpreted to give measurements of the ion current drawn from plasma in the pores. An existing one‐dimensional model of the plasma is adapted and combined with the Langmuir probe measurements to predict the ion dose to the pore surfaces. Our prediction agrees with measurements from UV absorption.