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SUMMARY:Heav Ion Beam Analaysis of Ion Implanted Polymer Nanocomposites
DTSTART;VALUE=DATE-TIME:20210727T100000Z
DTEND;VALUE=DATE-TIME:20210727T101500Z
DTSTAMP;VALUE=DATE-TIME:20260521T050909Z
UID:indico-contribution-7075@events.saip.org.za
DESCRIPTION:Speakers: Dakalo Mashamba (Tshwane University of Technology)\n
 Ion Beam Analysis (IBA) is a suite of techniques used to determine element
 al composition and depth profiles of thin film materials. Ion beam induced
  damage in soft insulating materials like polymers can be a limiting facto
 r to the accuracy of IBA especially when using heavy ions.  The usability 
 of Heavy Ion Elastic Recoil Detection Analysis (ERDA) at iThemba LABS for 
 analysis of polymeric films is presented in this work. The primary aim of 
 the work was to optimize the applicability of the technique towards depth 
 profiling ion implanted species in polymer films using different heavy ion
 s of Au7+ and Cu5+. The films were implanted with different ion fluences o
 f 80 keV Ti+ ions ranging from 5 x 1015 to 5 x 1016 ions/cm2 at liquid nit
 rogen temperature. Effects of ion implantation on the optical properties o
 f polymers were investigated using Ultraviolet-Visible (UV-Vis) spectrosco
 py. Comparative Rutherford Backscattering Spectroscopy (RBS) analysis conf
 irmed the implanted ion doses and increase in carbon concentration in the 
 polymers. Ion implantation induced loss of hydrogen in the near surface of
  the polymers has been observed using Time of Flight-ERDA. The analysis ef
 ficacy of and ion beam induced damages due to Au7+ and Cu5+ beams have bee
 n investigated comparatively. UV-Vis analysis shows an increase in absorpt
 ion intensity and a decrease in optical energy band gap as the ion fluence
  increases. The observed changes in UV-Vis have been correlated with RBS a
 nd Time of Flight-ERDA results. Possible ways of minimizing beam induced d
 amage while improving efficacy of the analysis have been suggested.\n\nhtt
 ps://events.saip.org.za/event/206/contributions/7075/
LOCATION:North-West University Potchefstroom Campus
URL:https://events.saip.org.za/event/206/contributions/7075/
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