Hi, I'm a Ph.D student in Korea. I have fabricated wire of photoresist(ormocomp) and I want to make it condu ctive by coating gold particles from gold colloid(Sigma, G1527-25ML) whose detail is following.
"All unconjugated gold colloids contain approximately 0.01% HAuCl4 suspende d in 0.01% tannic acid with 0.04% trisodium citrate, 0.26 mM potassium carb onate, and 0.02% sodium azide as a preservative."
After fabrication, I poured the gold particle solution on the fabricated wi re and dried the solution in open air at room temperature. I repeated pouri ng and drying process more than 30 times. However I failed to get conductiv ity from wire covered by gold particles. In my think, this non-conductivity is due to the presence of substances oth er than Au(gold particles). I want to know how to remove substances in gold colloid.
If you have information of this research, please give me your opinion.
Thank you.