Table 4.

Comparison table of CNT/water and CNT/PDMS.

Symbol	Unit	Description	Water[47]	PDMS[23]
$$\kappa$$	W/(m K)	Thermal conductivity of the medium	0.6	0.15
$$\beta$$	K−1	Thermal expansion coefficient	210e−6	920e−6
$${\rho }_0$$	kg/m3	Density of the medium	1000	965
$$c_p$$	J/(m3 K)	Volumetric heat capacity of the medium	4.179e6	1.409e6
$$v_s$$	m/s	Acoustic velocity	1480	1000
PA/TA pressure comparison (Modulation frequency: 10 MHz, pulse width: 100 ns)			1: 12.9
PA/TA pressure comparison (Modulation frequency: 10 GHz, pulse width: 100 ps)			1:7.7