Communicating relies on preventing the piezoelectric resonator from naturally deforming in response to strain.
When the transmitter sends its acoustic wave at the node, the piezoelectric resonator absorbs the wave and naturally deforms, and the energy harvester stores a little charge from the resulting vibrations.
This technique ensures that the piezoelectric resonator
-- a quartz crystal of the highest quality -- will operate at a constant temperature.
Piezoelectric gyroscopes can make use of rotation-induced frequency shifts in surface acoustic wave (SAW) or bulk acoustic wave (BAW) piezoelectric resonators
to measure angular rates.
Pisano, "Single-chip multiple frequency ALN MEMS filters based on contour-mode piezoelectric resonators
," IEEE J.
Topics include: dielectricity, piezoelectricity, pyroelectricity, and ferroelectricity; a structural approach to thermodynamic study; ferroelectric-paraelectric phase transition thermodynamic modeling; formalism; electric characterization, piezoelectric resonators
and filters; high overtone bulk acoustic resonators; electrostrictive resonators, and thin film piezoelectric transducers.
Written for the professional engineer, this book focuses on the design of high-frequency oscillators with lumped, distributed, dielectric and piezoelectric resonators
. Rhea, an RF and microwave engineering expert, devotes the first four chapters to different analysis techniques, then follows with chapters outlining the specific types of oscillators.
An array of piezoelectric resonators
is used to identify chemical and biological agents.
The RAP instruments were fitted with a thermally stable sensor mounting block, which provided temperature control, and with microfluidic and electrical connections to the pair of piezoelectric resonators
in the sensor cassette.
Like other piezoelectric resonators
, the HBAR transducers exhibit l/f noise.