Energy dispersive spectroscopy spectrums for both points 1 and 2 on sample 1 were

similar and showed gold peaks indicating the presence of gold. Figure 23 is the spectrum

for point 1. Note the gold peak at approximately 2.2keV. Points 3 and 4 are located off

of the star. Both spectrums showed peaks for gallium and arsenic but no peak for gold.

Figure 24 is the spectrum for point 3. The spectrum for point 2 and point 4 are located in

Appendix B. Spectrums for point 5 and point 6 are shown in Figure 25 and Figure 26.

Figure 27 is the spectrum from a line scan of sample 1 unetched.




 Counts

 Ga
 10000-





 5000-



 : C Au ,:Ga ,As

 0 5 10
 Energy (keV)


Figure 23. EDS spectrum for point 1 at the center of a star on sample 1 unetched.
Gallium, arsenic, and gold peaks are present.