Summary of the different methods used to synthesize niobium selenide materials, specifically Nb₂Se₉ and NbSe₂.

Material	Synthetic method	Properties	Reference
NbSe2	(a) mechanical exfoliation	(a) 1 μm to 30 μm with a thickness less than 2 μm	7
	(b) liquid exfoliation	(b) micro/nanoplatets range from 0.1 μm to 25 μm with a thickness less than 1 μm	8
	(c) RF magnetron sputtering	(c) 1.5 μm in thickness	9
	(d) chemical vapor transport	(d) 10 mm flakes	10
Nb2Se9	(a) flux method	(a) 117 nm to 547 nm nanowires	11
	(b) mechanical exfoliation	(b) 30 nm to 160 nm flakes	12
	(c) sintering in evacuated quartz tube	(c) single crystals	13