Page 172 - Microsensors, MEMS and Smart Devices - Gardner Varadhan and Awadelkarim
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152    SILICON  MICROMACHINING:  SURFACE


                                                              Deposit
                                                              and
                                                              pattern
                                                              sacrificial
                                                              layer
                     (a)





                                                              Deposit
                                                              and
                                                              pattern
                  (b)                                         polysilicon

































      Figure 6.7  Process flow for the linear motion actuator shown  in Figure 6.6 (Robbins et al. 1991)

      two worked  examples that are designed  to produce rotors  with either a centre-pin bearing
      or a  flange  bearing:


        Worked  Example  E6.3:  Rotor on a Centre-Pin  Bearing 5

        Objective:

        The  objective is  to  fabricate  a  disk-shaped rotor made of  poly-Si  that  is  free  to rotate
        about a poly-Si centre bearing.

      ' For  details  see  Mehregany  and  Tai  (1991).
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