# Tagged Questions

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### Having trouble with linearly varying potential values (semiconductor band modeling)

One way to model an electric field-induced potential along a 1D semiconductor is: $$\phi(z) = eE_\mathrm{field}z\quad [\mathrm{eV}]$$ I'm troubled with the values, however. A typical electric ...
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### Effects of doping in Piezoelectric properties

Good day! i'm little bit confuse, about effects of doping in piezoelectric properties, so basically as you increased the donor concentration (meaning as you enhance the p-type property or make it more ...
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### 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 ...
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### Standing waves and acoustic levitation

i am doing a new personnal project about acoustic levitation with standing waves into ambiant air using a piezo ultrasonic tranceiver and a reflective pannel. I modelised both of the emission and the ...
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### 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 ...
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### 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?
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### 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 ...
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### Electrical energy in a piezoelectric material

How do we define the electrical energy stored in a piezoelectric material? I'm confused about both the naming and the meaning. Are "electrostatic energy density", "dielectric energy density" and "...
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### 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' ...
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### Electrode configuration when radially poling piezoelectric material?

All the information on the web I have come across WRT poling piezoelectric material usually assumes a uniform field (such as between two plates). I would like to pole a cylinder so that the reverse ...
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### Piezoelectric water flow detection

Can a piezoelectric sensor detect constant water flow, or just the moment when the water is turned on and off?
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### 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 ...
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