Table 1. Comparison table of the electro-optical characteristics of different bistable SWs (T and S refer to transmittance and scattering, respectively).

Types	Operation voltage		Materials used	Stability duration	Helical pitch	Ref.
	T to S	S to T
PSIDa CLCs	20 Vrms at 50 Hz	20 Vrms at 5 kHz	CB15, 2 NLCsd, RM257, BME	24 hour	1.6 µm	10
Ion doped CLCs	13.1 Vrms at 50 Hz	19 V at 5 kHz	R5011, NLC, CTAB, RM257, RG184	Not measured	3 µm	11
DF-CLCs	20 Vrms at 1 kHz	20 Vrms at 100 kHz	DF-LCc, S811	2.5 s	1 µm	12
DFCTb	DC 7 V	25 Vrms at 1 kHz	QM-02-75, QM-02-77, NLC	Not measured	1.7 µm	18
Ionic LC-CLC	20 Vrms at 10 Hz	20 Vrms at 1 kHz	Ionic SmA, NLC, R1011	45 days	1.8 µm	13
ULH-CLC1	30 Vrms at 100 Hz	20 Vrms at 2 kHz	NLC and CB15	2 hour	1 µm	This work
ULH-CLC2	40 Vrms at 20 Hz	60 Vrms at 1 kHz	NLC and R5011	3 hour	0.5 µm	This work
USH-CLC	40 Vrms at 20 Hz	60 Vrms at 1 kHz	NLC and R5011	30 days	0.1 µm	This work

^aPSID: polymer stabilized ion doped.

^bDFCT: dynamic fingerprint chiral textures.

^cDF-LC: dual frequency LC.

^dNLC-nematic LC.