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. 2020 Mar 30;10(4):644. doi: 10.3390/nano10040644

Figure 1.

Figure 1

Experimental steps in the synthesis process: (a) cleaved and cleaned Si substrate; (b) immersion in 10% HF for 2 min, to dissolve the surface oxide; (c) immersion in 0.3 mM metal precursor solution for 5 min; (d) rinse sample with deionized water.