Table 2.

Summary of the presented works.

Target	Core Material	Linear Range	LOD	Ref.
Hemoglobin	Fe3O4@SiO2	0.005–0.1 mg/mL	0.0010 mg/mL	[76]
Pyocyanin	Fe3O4@SiO2	-	-	[77]
TNF-α	Fe3O4@SiO2	0.01 pM–100 nM	0.01 pM	[78]
Metronidazole	GQDs@SiO2	0.2–15 μM	0.15 μM	[82]
Dopamine	CdTe QDs@SiO2	0–1.2 × 10−6 M	(100–50) × 10−9 M	[83]
Dopamine	Au@SiO2	4 × 10−8–5 × 10−5 M	2 × 10−8 M	[85]
Carcinoembryonic Antigen	Au	-	0.1 ng/mL	[86]