Characterizing Vibrating Cantilevers for Liquid Viscosity and Density Sensing

Table 2

Reference values (dynamic viscosity 𝜂 and mass density 𝜌) of the sample liquids used in the measurements and the expected depth of penetration 𝛿 at an angular frequency of 𝜔=2𝜋⋅100Hz, see (8). The dynamic viscosity was measured using a Brookfield LVDV+II-CP cone/plate rheometer at an ambient temperature of 23^°C.

Sample liquid	Viscosity 𝜂	Density 𝜌	𝛿 (100Hz)
AK150 silicone oil	130mPa⋅s	965kg/m^3	0.65mm
AK350 silicone oil	440mPa⋅s	979kg/m^3	1.2mm
SIL300 silicone oil	211mPa⋅s	1078kg/m^3	0.79mm
Alcatel A120 oil	270mPa⋅s	881kg/m^3	0.99mm