Questions tagged [piezoelectric]
The piezoelectric tag has no usage guidance.
-2
votes
1answer
79 views
Energy can be created
Consider a device which converts kinetic energy into electrical energy ( just like piezoelectric generator). Now I install this on two trains of very high mass approaching each other (moving in ...
0
votes
0answers
8 views
How to Compute Free Fall Force from Levered Mass accounting for Foam Dampening (and ideally with some drag allowance from true free fall)? [closed]
We are building a piezo-electric punch pad to help people with Parkinson's Disease. The piezo sensor is low cost, rather durable, and can measure a voltage with some basic amplifying operations. ...
1
vote
0answers
17 views
How are the orientations and cuts of crystal substrates determined?
I have been looking at piezoelectric crystals, LiNbO3 primarily, so piezoelectric devices. But I have had trouble understanding the cuts and orientations that are referred to with the rotated cuts.
...
0
votes
1answer
30 views
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?
0
votes
0answers
18 views
Anti resonance frequency of piezoelectric
There is a method to measure anti resonance frequency of piezoelectric? The RC circuit and this relation and equations can measure resonance frequency.
1
vote
1answer
44 views
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 ...
1
vote
2answers
40 views
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 ...
0
votes
1answer
14 views
How to estimate energy of piezo ignighter discharge?
Question for fun. All we know piezo ignighters, these small friends, like following one:
They are of quite same size and parameters with rough approximations: same spring, same piezo, same hit force, ...
0
votes
0answers
19 views
Why do electric moments in piezoelectric crystals have a random distribution of orientations to begin with?
Above is just one picture used to visualize the piezoelectric effect. The explanation usually is that as an electric field is applied to the material, the electric moments of the molecules in the ...
0
votes
0answers
18 views
Piezoelectricity and conservation of energy
This is how I understand piezoelectricity: The molecules of a material have electric dipole moments. When a sample of the material is under mechanical stress, the molecules "slide"/"turn" and become ...
0
votes
1answer
23 views
Piezoelectric powder solution to measure extremely high pressure
Idea - While reading about piezoelectric materials, I thought about mixing piezoelectric powder with silicon oil to measure extremely high pressures (of up to 4000bar).
Experiment - Consider a ...
0
votes
1answer
18 views
PiezoActuator energy loss in a fluidic environment
I am trying to model the loss of a Piezo actuator in a fluidic environment.
A Piezo actuator can be modeled using a Equivalent Circuit model stated below.
http://www.noliac.com/typo3temp/GB/...
0
votes
1answer
19 views
Piezoelctric Ceramic Transducing Capabilties
Piezoelectric ceramics are able to work as transducers, outputting electrical energy when mechanical stress is inputted. However, most ceramics have high static voltage and low current and power ...
0
votes
0answers
22 views
Permittivities of Free Stress and Free Strain in Piezoelectricity (Really need help!)
Is the dielectric permittivity of free stress and the dielectric permittivity of free strain specific given constants for a certain material? If not, how do we calculate for it? What is their ...
2
votes
1answer
436 views
What does the term “inversion symmetric” mean?
I've read the responses to the question `"Lack of inversion symmetry" in crystal?' but I'm still unsure about the meaning of inversion symmetry. Which of the following two dimensional ...
0
votes
1answer
55 views
Difference between Piezoelectric effect and Faraday's law of induction?
I was researching how the transducer works for an ultrasound machine.What I learned was from a piezocrystal (quartz) the applied mechanical stress can produce an alternating electric field (from the ...
0
votes
0answers
65 views
Calculate output voltage and current in piezoelectric generator
I have been researching on piezoelectric generators, and trying to figure out how much voltage and current you can get from a force acting upon one. Is it the pressure that generates the electricity ...
0
votes
0answers
11 views
Piezoelectric PVDF Film for Aerosol Generation of Dry Powders.
So I recently came across this journal article titled, "Vibration Technology for
Active Dry-Powder Inhalers". Hyperlink is https://pdfs.semanticscholar.org/5285/3c4a2bc106137901efaae989b4ba8f5187c4....
0
votes
1answer
80 views
Do piezo materials change volume?
I know that piezoelectric materials change shape when voltage is applied to them,but do they also change volume? Do they keep same volume and just change their geometrical shape,or do they also ...
0
votes
1answer
180 views
What are some good textbooks on material and crystal physics?
I am looking for good physics textbooks on materials and crystal physics, I do not mind if they are a bit general but they must cover useful topics. However, the specific topics I would like some ...
1
vote
1answer
41 views
Is there a difference between piezo electric actuator and piezo actuator?
I read concepts of both the piezoelectric actuator and piezo actuator in scientific articles.
Are the notions totally same? or is there a difference between a piezoelectric actuator and piezo ...
2
votes
1answer
46 views
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 ...
2
votes
1answer
61 views
What is the equivalent of piezoelectricity for optics/photonics?
Piezoelectricity can be considered as the electromechanical transduction behaviour, where a material can convert mechanical deformation/energy directly to voltage difference / electricity or vice ...
1
vote
1answer
409 views
Why do piezoelectric elements have a resonant frequency?
While working with a piezoelectric element, I noticed some high frequency oscillations at 6kHz. I can't figure out why the piezo element has a resonant frequency. This is unlikely to be noise as there ...
0
votes
0answers
32 views
What is physically pushing on the piezoelectric disk?
When I taped a piezoelectric disk to a piece of plate glass I was surprised that a simple blue laser pointer moved the disk enough to produce almost a 1/10th of a volt Something physically hit the ...
0
votes
0answers
29 views
Could a 'pulsar-like' planet exist due to the following properties?
A planet has been discovered with a composition believed to be made up of diamond. If such a planet were to host a massive satellite of high eccentricity, it seems possible that the large tidal forces ...
1
vote
0answers
84 views
Why would piezo voltage output at high temperature increase with use?
I am using an inexpensive piezoelectric diaphragm as a contact sensor but am getting an unexpected effect: When theelement is stressed by cyclicly putting under pressure and releasing the pressure at ...
1
vote
3answers
960 views
What are crystals used for in radio?
What are crystals used for in radio? I think I sort of know the answer to this but I would like a more detailed explanation. To my current understanding, piezoelectric crystals are used to modulate ...
1
vote
0answers
144 views
Quartz piezoelectric battery
I'm designing a battery that uses quartz crystals to hold/produce a current for a long time using piezoelectricity.
My question is:
Would it be more efficient to have multiple small quartz crystals ...
0
votes
0answers
36 views
Piezo-electric effect an interesting phenomena
How much current can be generated by using a piezoelectric crystal?
Do sound waves help in creation of inverse piezoelectric effect?
1
vote
0answers
41 views
Work done in Polarizing a Piezoelectric
Work Done by a conservative force in a complete cycle is zero. Does that mean the the Ferroelectric Hysteresis loop represents zero work done ?
So according to 1st Law of Thermodynamics, the Energy ...
3
votes
1answer
121 views
Why is BaTiO3 piezoelectric, but CaTiO3 not?
When BaTiO3 is cooled below the Curie point (120°C), the cubic structure changes slightly, so that $Ti^{4+}$ shifts by 0.006nm away from its position at the center of the cube. I don't know why this ...
2
votes
1answer
431 views
Smallest droplet produced in a continuous inkjet printer
I'm reading about inkjet printers, and I was wondering - how small do the droplets created get? Wikipedia's article says
A piezoelectric crystal creates an acoustic wave as it vibrates within the ...
1
vote
0answers
19 views
How to calculate the deflection of GFC under Macro Fibre Composite load?
I have this 85x14x0.3mm MFC(Macro Fiber Composite) bonded to GFC(Glass Fibre Composite)200x85x2mm. When MFC is powered up GFC sheet undergo deflection. I only know how to calculate deflection from ...
0
votes
0answers
32 views
Water layer on sample during STM barrier height spectroscopy
This is actually somewhat a practical question, rather than theoretical one.
Let's say we're measuring the work function of a material in non-vacuum conditions. This means on our sample we are ...
0
votes
1answer
60 views
Audio Speaker as Shaker for Piezoelectric application
so as a continuation of my research in piezoelectric effect i need a frequency source (electromagnetic shaker) to generate piezoelectric voltage. But my problem is i don't have a shaker. So my ...
3
votes
1answer
329 views
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 ...
-1
votes
1answer
289 views
How much electric energy can be produced by a given size of piezo material?
Piezoelectric materials produce electric charges when deformed. For a given size of a piezoelectric material, say quartz, how much total electric energy can be produced ?
0
votes
0answers
637 views
Relationship between voltage and frequency
This is an another question about piezoelectric material. So basically i just want to know the the exact relation or equation between frequency and Voltage. if you excite the piezoelectric material of ...
1
vote
2answers
3k views
How to measure resonant frequency of piezoelectric material
I just want to know the resonant frequency of piezoelectric material. We can determine by using the equation which is related to the dimension of the material. But i want to confirm it by applying AC ...
0
votes
1answer
716 views
Vibrational frequency of piezoelectric material
When a piezoelectric material experience a stress it generates voltage, and also when you applied voltage the piezo-material experience a vibrational frequency. Using oscilloscope we can determine the ...
2
votes
0answers
73 views
Do Thorlabs piezoelectric transducers s PAZ009 and PAZ015 wor in vacuum?
We have few closed loop piezoelectric transducers (stacked) from Thorlabs, part numbers PAZ009 and PAZ015. I have prepared all the required feed through. I want to use them under rough vacuum $\sim 10^...
0
votes
0answers
399 views
Effects of thickness in piezoelectric properties
Good day! i just want a clear and direct relation (what phenomenon?) about the effects of film thickness on the piezoelectric coefficient. Base on my research as you increased the thickness the ...
0
votes
1answer
59 views
Can a piezoelectric material only vibrate at one frequency?
Given a material X with piezoelectric properties which is used in a ultrasonic transducer, what determines the working frequency of said transducer?
If hypothetically such a transducer is specified ...
1
vote
0answers
109 views
Piezoelectricity from high pressure
Is it possible to convert 10Mp vapor or hydraulic pressure to electricity using piezo crystals? What would be the energy output in watts or the theoretical maximum conversion efficiency?
2
votes
0answers
117 views
Crystals in piezoelectricity
I was reading about piezoelectricity and crystals and found such a statement (on Wikipedia) : For example, a 1 cm3 cube of quartz with 2 kN (500 lbf) of correctly applied force can produce a voltage ...
0
votes
0answers
19 views
Would a previously poled piezoelectric material experience a force aligning it with an external electric field?
I'm wondering if it would possible to crush a poled PZT object, disperse the powder into a thermoplastic (with a melt temperature below the Curie temperature of PZT) and align the 'crystal shards' ...
1
vote
2answers
2k views
Piezoelectric water flow detection
Can a piezoelectric sensor detect constant water flow, or just the moment when the water is turned on and off?
2
votes
0answers
362 views
Piezoelectric effects of naturally shaped quartz crystal for maximium Q?
Background
Based on helpful comments and links here and also from my question on the electronics stackexchange, I have learned that the quartz crystals are nature's transducers of energy, allowing ...
1
vote
1answer
20k views
Vibration of Quartz crystal
What does it mean when we say quartz crystal vibrates.it is very strange to read that a particular solid vibrates with period of 10^(-6) seconds.does it mean something else when it is written quartz ...
