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. 2011 Aug 11;11(8):7892–7907. doi: 10.3390/s110807892

Table 2.

Sensor Dimension and Material Properties.

Symbol Description Value
Mechanical:
Epoly Polysilicon Young’s modulus 160 GPa
E Effective Young’s modulus of the beam 70 GPa
m Proof mass weight 105 μg
Geometric:
Wb Cantilever beam width 13 μm
Hb Cantilever thickness from polysilicon layer 4.2 μm
Lb Cantilever beam length 200 μm
Lpm Proof mass length 500 μm
Wpm Proof mass width 500 μm
Lpoly Length of poly resistor 49.4 μm
Wpoly Width of poly resistor 1.2 μm
Electrical:
ρs Polysilicon sheet resistance 26.1 Ω/square
αpoly Polysilicon temperature coefficient of resistance (TCR) 2.1 × 10−3 K−1*
ρpoly Polysilicon resistivity 9.14 Ωμm
Thermal:
κAl Aluminum thermal conductivity 237 W/(K.m)
κox SiO2 thermal conductivity 1.1 W/(K.m)
κSi Silicon thermal conductivity 170 W/(K.m)
κpoly Polysilicon thermal conductivity 29 W/(K.m)
*

Note: This data is obtained from the temperature characterization on the fabricated device.