Effects of mass layer imperfect bonding on the electrical impedance of a quartz crystal microbalance

• 作 者: CHEN YangYang WANG Ji DU JianKe YANG JiaShi
• 机 构: Piezoelectric Device Laboratory,School of Mechanical Engineering and Mechanics,Ningbo University,Dep
• 出 处: Science China(Physics,Mechanics & Astronomy)
• 发表日期: 2013年11期
• 关键词: impedance imperfect piezoelectric quartz bonding electrically tangential viscoel

We study electrically forced vibrations of a crystal plate of AT-cut quartz carrying a thin mass layer operating as a quartz crystal microbalance for mass sensing.The mass layer is imperfectly bonded to the crystal plate with their interface described by the so-called interface-slip model which allows a discontinuity of the tangential interface displacement.Mindlin’s equations for piezoelectric plates are used.An analytical solution is obtained.The electrical impedance is calculated.The effects of an elastic interface and a viscoelastic interface are examined.

We study electrically forced vibrations of a crystal plate of AT-cut quartz carrying a thin mass layer operating as a quartz crystal microbalance for mass sensing. The mass layer is imperfectly bonded to the crystal plate with their interface described by the so-called interface- slip model which allows a discontinuity of the tangential interface displacement. Mindlin’s equations for piezoelectric plates are used. An analytical solution is obtained. The electrical impedance is calculated. The effects of an elastic interface and a viscoelastic interface are examined.