Dependence of Plasmonic Properties of Silver Island Films on Nanoparticle Size and Substrate Coverage

Table 1

Table showing the sample labeling, deposition conditions, and the resulting effective diameter and aerial coverage of the metal island films.

Sample no.	Deposition condition^a		Effective diameter^b(nm)	Areal coverage^c (%)	Avg. center-to-center spacing “s”^d (nm)
	Thickness of film (nm)	Pressure (Torr)
1	0.5	1𝐸−3	14	13	34
2	3.0	1𝐸−3	23	31	37
3	5.0	1𝐸−3	32	35	48
4	5.7	1𝐸−4	52	38	75
5	7.3	1𝐸−4	67	41	93
6	9.3	1𝐸−4	74	43	100
7	11.3	1𝐸−4	87	39	123
8	14.2	1𝐸−4	95	39	135

aAll samples were annealed at 200°C for 1 hour at ~5×10⁻⁶ Torr vacuum.
bEffective diameter is defined as the diameter of a circle having the same cross-sectional area as that of the metal island [19].
cPercentage of surface area covered by silver islands.
dThe average center-to-center spacing “s” is calculated from the values of effective diameter and the aerial coverage.