Transparent Nanocrystallite Silver for Antibacterial Coating

Table 1

The antibacterial efficacy against Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus.

Bacteria species	Sample	Number of viable cells of bacteria at 0 hr	Number of viable cells of bacteria after 24 hrs	Value of antimicrobial activity
Pseudomonas aeruginosa	2.5% silver coating∗	1.8×10^5	2.0×10^2	4.6
	Control∗∗	1.9×10^5	9.5×10^6	—
Escherichia coli	2.5% silver coating	4.0×10^5	<10	7.2
	Control	4.4×10^5	1.7×10^8	—
Staphylococcus aureus	2.5% silver coating	2.0×10^5	8.9×10^2	4.2
	Control	2.0×10^5	1.5×10^7	—

^∗2.5% silver coating: coating consists of silver and sol-gel formulation.
∗∗Control: glass slides with no coating applied.