A Biomedical Surface Enhanced Raman Scattering Substrate: Functionalized Three-Dimensional Porous Membrane Decorated with Silver Nanoparticles

Table 1

The comparison of two substrates (microporous membrane and glass) for Raman signal at 1165 cm⁻¹.

Time (day)	Microporous membrane	Glass
1	5769	5760
2	5287	5211
3	5051	4664
4	4945	4558
5	4439	4027
6	4108	3982
7	3805	3343
8	3609	2484
9	3120	1280
10	2800	523
11	2510	<500
12	2325	<500
13	2008	<500
14	1385	<500
15	920	<500

Microporous membrane is the porous substrate coated with Ag nanoparticles.
Glass is the glass substrate coated with Ag nanoparticles.