Questions tagged [piezoelectric]
110 questions
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Piezo material under static force
Consider a piezo material, say quartz. It produces electric charges when deformed. Suppose a static force is applied to it, which results is charges on two surfaces. If these charges are drained away but the force (and hence the deformation) is not…
akm
- 265
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Anyone know of a piezoelectric polymer that reacts to light or electron bombardment?
In other words, a very small amount of light would make it rapidly expand 1/2 mm or more-- (1/1000th candlepower)--or the amount of electrons that a standard (non-lcd) TV monitor shoots at one pixel?
Might there be any substance that does behave…
Joshua
- 21
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What is the physical mechanism behind piezoelectricity in PZT? (no maths please)
What exactly does applying a mechanical force to a PZT ceramic do to its crystal structure that results in a potential difference being generated across the crystal?
I can't work out whether the applied force results in:
A change in the dipole…
Qui quae quod
- 117
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Using piezoelectiricty to produce electricity
What if piezoelectric materials could be placed under a runway to then produce electricity to power (street) lights - I don't know what voltage certain piezoelectric compounds can produce, but would this be possible?
user29173
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1 answer
Why would the dielectric constant at zero strain be different than the dielectric constant at zero stress?
Hello. My question is about the last equation, where the conversion is between dielectric constant at zero strain and the dielectric constant at zero stress. What's the difference between them? Why would the dielectric constant differ when taking…
user134613
- 132
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Why Shifting peaks in impedance-frequency graph with changing the amplitude of input frequency?
we used a RC circuit for measuring resonance frequency of a piezoelectric. And each time, we changed the frequency domain of the input. The impedance model, in terms of frequency, indicates that the peaks are shifted by varying the frequency of the…
Fa Had
- 21
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2 answers
Suggest the method to that the piezoelectric resonance frequency does not change after attachment a piece?
When the piezoelectric is connected to a element such as mirror to use in interferometer, the resonant frequency decreases, we want to use the piezoelectric and mirror on which we can use it, how can this connection be made and that the resonant…
Fa Had
- 21
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Piezo transducer face movement
I have an ultrasonic piezo transducer that I am running with a 60Vpp signal. The material is probably PZT or similar. Can anyone supply a ballpark figure for the likely peak to peak mechanical displacement of the face of it? The frequency is around…
user56903
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When a cantilever is subject to vibration test at single frequency excited frequency, can it be calculated analytically using formula
I have found P=eeoV/(ktd33t), but this has "P" pressure. I need frequency vs. voltage.
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Reverse piezo effect of quartz and quartz-rich rock
If quartz or quartz-rich rock vibrates when used as a conductor (electrostriction), would it grind away when pushed against an immovable object with enough force? How much force?
rcl
- 1
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I want to know the relationship between the frequency applied to the piezoelectric vibrator and the exit frequency
We purchased a vibrator with frequency characteristics including the desired frequency. Now, to produce a sound with a single frequency, it is difficult to know how to determine the frequency of the inlet voltage. I think that the output frequency…
Tiny
- 9
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Crystals and charge
I've been researching on Piezoelectric crystals. And i've been wondering that could keeping constant pressure on piezoelectric crystals create a constant flow of electricity?
I've tried googling it but the results were off topic.
0
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Lowering pitch of a piezoelectric buzzer
I have tried to drastically lower the pitch of a piezoelectric buzzer, but to no avail. All the piezo buzzers I have emit a very high pitched whistle-like tone. I've tried changing all the parameters of my pulse generator, i.e., frequency, duty…
Eddie
- 111
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Piezoelectric effect and area
I would like to know if my reasoning is correct for this situation, as I am unsure.
I have two piezoelectric substrates, on both of them I deposit an active film on one side of each, that will change length under a certain applied mechanism.
The…
Dave
- 219
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Is there a way to attach a mirror to a piezoelectric?
I want to use a mirror on the piezoelectric in Mickelson setup, how should I connect this?
Resonance frequency of piezoelectric is important for me. Is there a method to not change the frequency?
Fa Had
- 21