isobornyl acrylate (IBOA), trimethylolpropane triacrylate (TMPTA),
a photoinitiator; diphenyl (2,4,6-trimethyl benzoyl)-phosphine oxide/2-hydroxy-2-methyl
propiophenone (blend), beta carotene (synthetic, ≥93% (UV),
powder), tartrazine (dye content ≥85%), 3-(trimethoxysilyl)propyl
methacrylate, tin (II) chloride (SnCl2), palladium (II)
chloride (PdCl2), boric acid (H3BO3), and ∼37% hydrochloric acid (HCl) were all purchased from
Sigma-Aldrich. The surfactant Hypermer B246-SO-M was donated by Croda.
Electroless nickel plating solutions (Part A and Part B) were purchased
from Caswell UK.