Table 6.

Linear ranges and LODs of Ag-Au hybrid nanoprobes

NPs/modification	Analyte	Linear range	LOD	Detection base	Ref.
Au@Ag core-shell	HCOH	0.1–40 mM	50 nM	Shell formation	[267]
Au@Ag core-shell	Glucose	0.04 - 1 mM	10 nM	Shell formation	[271]
Ag@Au core-shell	Cyanide	0.4-32 μM	0.16 μM	Shell etching	[269]
Au@Ag core-shell	Cyanide	0.4–100 mM	0.4 mM	Shell etching	[274]
Ag@Au core-shell	Nitrite	1.0 - 20.0 μM	0.1 μM	Shell etching	[272]
Au@Agnanorod core-shell	Cu2+	3–1,000 nM	3 nM	Shell etching	[275]
Au@Ag core-shell	Iodide	0.5-80 mM	0.5 mM	Shell composition change	[273]
DNA-embedded core–shell Au@Ag	Glucose	0.00–0.20 and 1.00–100 μM	10 nM	Shell etching	[276]
Au@Ag core-shell	Glucose, cholesterol	0.5 - 400 mM 0.3-300 mM	0.24 mM 0.15 mM	Shell etching	[277]
Thiolated oligonucleotide functionalized Ag@Au core-shell	Target DNA	-	-	Aggregation	[279]
Au@Ag core-shell	H2S	50 nM - 100 μM	50 nM	Shell composition changing	[280]
Ag-Au alloy NP	Hg	0.02–100 ppb	0.01 ppb	Shell composition changing	[281]
Oligonucleotide functionalized Ag-Au alloy NP	Target DNA	-	-	Aggregation	[268]