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Are there any materials that undergo strong contraction when an electric current is introduced?
Yes, all piezoelectric materials exhibit the reverse piezoelectric effect. A piezoelectric material is one that generates an electric field or electric potential in response to applied mechanical stress. Therefore, in the reverse case, passing an electric current through the material or an electric potential across the material, will cause it to contract or elongate, depending on the direction of the current. One of the best example of this is lead zirconate titanate which will contract/elongate up to about 0.1% of the original dimensions.
How long does piezo material last?
Great question: A piezoelectric material such as quartz might a very long time, but they do age. But for applications where absolute frequency stability is needed, other methods are used. See: http://en.wikipedia.org/wiki/Crystal_oscillator
What is the cost of a piezoelectric crystal?
The vast majority of devices that use piezoelectric crystals (piezoelectric buzzers, fish finders, atomic force microscopes, etc.) use crystals of lead zirconate titanate (PZT). The crystal oscillator in a computer or digital clock uses the piezoelectric effect, but it is usually made of pure quartz (silicon dioxide). Many different crystals and other materials exhibit the piezoelectric effect, including quartz crystals, cane sugar, and bone.
How are piezoelectric materials that contain silicon used in science and industry?
Piezoelectric materials have been integrated with silicon microelectromechanical systems (MEMS) in both microsensor and microactuator applications. Some recent and emerging applications of piezoelectric MEMS are acoustic emission microsensors, vibration monitors, molecular recognition biosensors, precision positioners, micropumps, and linear stepper motors. - See more at: http://www.chacha.com/question/how-are-piezoelectric-materials-that-contain-silicon-used-in-science-and-industry#sthash.EpLIkFTw.dpuf
Explain the working of piezeoelectric oscillator?
A piezo-electric material is one who's physical dimensions (size) noticeably change when a current is passed through it. So if an AC (alternating current) is passed through a piezo-electric material, it itself alternates, or oscillates. This type of material is exploited in Electron Microscopes and Atomic Force Microscopes, which is how they are able to get such small, yet precise images.
Which one is piezoelectric material?
quartz
What is piezoelectric crystal?
Piezoelectricity is the property of a material to generate movement from an electric current, and vice versa. A common piezoelectric material is quartz.
Can someone give an example of a Piezoelectric material?
Lead zirconate titanate
Do the costs of Piezoelectric Hydropower make it prohibitive for common use?
no.
How does piezoelectric produce electric current?
When piezoelectricity material is squeezed, it produces electricity. This is the esseantial idea about piezo materials.
How do you start a piezoelectric reaction?
Piezoelectrics are materials that generate electricity when compressed or expanded. In order to start the reaction, you need to either crush or stretch the material.
How do you pronounce piezoelectric crystal?
Like this: (piezoelectric-crystal)
Are there any materials that undergo strong contraction when an electric current is introduced?
Yes, all piezoelectric materials exhibit the reverse piezoelectric effect. A piezoelectric material is one that generates an electric field or electric potential in response to applied mechanical stress. Therefore, in the reverse case, passing an electric current through the material or an electric potential across the material, will cause it to contract or elongate, depending on the direction of the current. One of the best example of this is lead zirconate titanate which will contract/elongate up to about 0.1% of the original dimensions.
What is the function of piezoelectric crystal?
Piezoelectric crystals have unique properties. If you strike them (not too hard), they produce a high voltage pulse. If you apply electricity to them, they swell. If you just tag them with a pulse of electricity, they ring at their modal frequency. These properties allow them to be used in many applications. The following are just a couple examples of their use. Disposable lighters that don't have flint use a piezoelectric crystal to generate an arc that ignites the gas. Accelerometers use piezoelectric crystals to generate signals proportional to how fast something is accelerating. In electronics, piezoelectric crystals are used to generate master timing signals.
How can you convert sound energy into electrical power which can be stored for using later?
You can use a piezoelectric device. Piezoelectric devices are commonly used to convert back and forth between mechanical and electrical energy. Examples include cheap electrical buzzers and cigarette lighters (those that create a spark to light the butane). To efficiently use a piezoelectric device you must devise an acoustic amplifier to increase the pressure on the surface of the piezoelectric as much as possible, and then efficiently store the piezoelectric power via diodes (and other marvelous circuit elements) into a capacitor.
Do tumbled quartz have piezoelectric properties?
Yes, all quartz has piezoelectric properties, whether it has been tumbled or not. However, in natural quartz, were optical twinning (equally distributed left and right quartz forms inside the material) is very common, the piezoelectric effect is not strong. That is the main reason why only synthetic quartz is being used by manufacturers, where twinning is almost absent.
What is the Design of piezoelectric floor?
In a given kind of floor (a plastic one for example) you insert a network of piezoelectric cells made out of a piezoelectric material (like quartz). They're all connected to a substation that transforms all those electrical impulsions in a clean AC power source. When the cell is pressed and relaxed, it delivers a small amount of electricity (a propriety of the matter). That's what you collect.
