... nitride Table 4.5 Element \/D at 11 00°C (um 7xl 019 a 1. 8 x 10 21 Phosphorus 0.329 1. 4X10 21 p-type: a 80 -12 0 20-30 18 0-220 20-30 350-500 20-30 200-600 20-40 5-7.5 16 0 -17 5 State Use Antimony trioxide ... Ceramic/plastic 11 0-80 /13 0 -10 5 Up to 6500 Plastic 95-60 Up to 17 000 Ceramic 70-45 Up to 25 000 30 Plastic 65-50 Up to 17 000 Ceramic/plastic 40 -19 /46-38 Up to 75000 Ceramic 60 Plastic 12 Surface mount ... optical and electron-beam lithography4 Figure 4 .11 shows the lithographic patterning of a substrate with a negative resist and chrome mask plate (mask 1) , and subsequent soft-baking and developing...
... strain Equations (10 .12 ) and (10 .14 ) are often referred to as piezoelectric constitutive equations In matrix notation, Equations (10 .12 ) and (10 .14 ) can be written as (Auld 19 73b): [T] = [c][S]–[e ... Tournois, P and Lardat, C (19 69) "Love wave dispersive delay lines for wide band pulse compression," Trans Sonics Ultrasonics, SU -16 , 10 7 11 7 Varadan, V K and Varadan, V V (19 97) "IDT, SAW and MEMS ... demonstrated (Du et al 19 96) PMMA has a density of about 1. 18 kg/m3 and has a shear acoustic velocity of 11 00 m/s (Kovacs et al 19 93; Jakoby and Vellekoop 19 98; Du et al 19 96), whereas sputtered...
... amplitudes and time delays t\ and t2, respectively These may be written as Si(0 = A1 cos(w0 + V>t/2)(t - fi) (13 .10 ) and S2(t) = A2cos(o)0 + l^t/2)(t -t2) (13 .11 ) with + Te (13 .12 ) + re (13 .13 ) where ... Sample holder with SAW device T1 01 T1 011 Figure 11 .6 Schematic of measurement setup H S 21 i s 11 S22 S12 Figure 11 .7 Signal flow of a two-port network 11 .9 CALIBRATION Calibration of any measurement ... 0.000 -0.0 01 -0.002 Ml ' M M M M 10 12 Time (s) Figure 13 .12 14 16 18 20 Measured strain on the surface of a vibrating beam 13 .4.2 Temperature Sensor An IDT and two reflectors are patterned onto...
... time delay t\ and a different amplitude (13 .50) 01( 0 = [w0 + u(t — t ) / ] ( t - t1) + 00 (13 . 51) The IF corresponding to S ( t ) is expressed as ut 21/ I1(0 = B1 cos[ut1t + w0t1 - 2] (13 .52) Both ... geometry and material data is well documented by Cross and Schmidt (19 77), Haus and Wright (19 80), and Campbell (19 98) Figures 13 .20 and 13 . 21 show a modeling example of an IDT—IDT pair and a two-port ... fit M 18 0
... shown that b1 = a1S 11 + a2S12 and b2 = a1S 21 + a2S22 (14 .1) and, therefore, S 11 = b /a , S 21 = b2/a1 when a2 = 0; S12 = b /a , S22 = b2/a2 when a1 = (14 .2) where S 11 and S 21 (S12 and S22) are ... architecture of (a) a smart actuator and (b) a smart microsystem (or MEMS) Table 15 .1 Description Smart material Smart structure Smart sensor Smart actuator Smart controller Smart electronics Smart microsystem ... characterization and testing of wireless MEMS-IDT based microaccelerometers," Sensors and Actuators A, 90, 7 19 15 Smart Sensors and MEMS 15 .1 INTRODUCTION The adjective 'smart' is widely used in science and...