Piezoelectric and their application

Piezoelectric body is such a class of materials, when applied mechanical stress, can cause internal tension. In addition, the piezoelectric effect in the electric field, its physical properties will change. Now common for crystals or crystal piezoelectric ceramic (α-quartz) crystals is a 40Y6795 well known piezoelectric. Cajun explained that the key technology for self-powered is the piezoelectric body. “Piezoelectric Body ‘of the English word” piezoelectrics “derived from the Greek” piezein “, its meaning is” topress “(pressure).

Piezo-electric in 1880, was the first time, French scientists have discovered, is not a new concept, from the First World War, the piezoelectric material was used in the acoustic navigation, and ranging device positioning. In today’s society, a microphone and piezoelectric materials are quartz watches. Located on the microphone of the sound vibration piezoelectric chips will change to the current changes. The sound waves hit a Dell Latitude D830 battery piezoelectric thin, it will thin at both ends of the electrodes to generate an electric charge, size and symbols change with the change in sound. This change in load on the piezoelectric plate, then by electronic devices, can be transformed into radio waves spread in remote locations. These radio waves received for radio, and through the radio speakers placed on the vibration of thin piezoelectric crystals, but also become a voice that resonates in the air. Is it can be said that the microphone in the piezoelectric plate can “hear” the sound, while the speakers are on the thin piezoelectric crystals, “talk” or “singing”.

Because the system also contains material piezo-electric, when press the power button, press enter in contact with a piezoelectric crystal, and the resulting pressure, the pressure of the piezoelectric crystal will received to generate sufficient voltage, the voltage generated by spark capable of igniting the gas, the launch vehicle.

Even in some European clubs have also installed a special floor contains a piezoelectric material that the customers dance disco able to absorb the energy generated when the steps are, and the conversion of energy into electrical energy lights for night clubs to provide hp 417066-001 battery energy. According to reports, the Hong Kong Coliseum ready to use this technology, not the movement of personnel into electricity, maintenance of fire museum and music player, the necessary energy.

Low impact on the special

With more and more widely used piezoelectric materials, scientists have thought for products of low power electronics, but the traditional piezoelectric materials are too “big” development, to nanoscale piezoelectric material to become a new R & D staff.

Cajun counterparts from the University of Houston professor and co-operation, through the apple MacBook 13 inch battery study found that a thickness of 21 nm around the ability of piezoelectric materials, processing of the strongest wave to probe the wave energy on the energy efficiency supply 100%. And because of the sensitivity of nano-materials, nano over 21 large and small, nano-materials for other levels can not achieve such high energy conversion efficiency.

Piezoelectric materials industry experts said, the card payment to this new discovery will have a major impact on products of low power electronics, this new material will be mobile phones, notebook computers, special communication devices and other electronics general consumer products such as mp3 players to prove, many consumers because of dissatisfaction toshiba PA3395U-1BRS battery with the use of time, but he hopes to have something to replace those batteries.

The piezoelectric material may also be used on the battlefield. In modern warfare, soldiers often have a large number of advanced electronic devices, such as devices to detect explosives, once inside the cell, without electricity, and combatants can not work, and the VGP-BPS2C sensor filled nano-piezoelectric materials, the acquisition by soldiers with traces of peripheral energy and transforms it into electricity, the exploration mission will be completed, this type of self-generation technology power will be widely used in the war.

Therefore, Cajun nano piezo-electric, although very small, only 21 nm thick, but its impact is no small matter.

Card payments that, in the continued development of the application of piezoelectric material, the piezoelectric materials in nano-class research is a relatively new attempt, we must consider a number of different and complex problems. An analogy, if you want to apple M8403 battery look inside the phone booth the size of objects the size of the equipment transferred to the hair, you will naturally find the difficulty. He said that actually changes the size of study, its response to external conditions, also be different. Materials of the small size of the study, these changes must be taken into account range.

Cajun said: “When the material reduced to nano-size scale, they appeared in certain performance characteristics of a great change. Piezoelectric material would such a development. We found that when the thickness is between 20 nm to 23 nm between efficiency piezoelectric% to 100%. “He said that currently they are studying the fundamental laws of nature, and try to be better applied to development of engineering materials. In addition, they will also learn about the chemical structure of piezoelectric material and physical components, to adopt a way to change the BTP-43D1 structure of materials to improve their performance.

Q: After buying this again on the screen and the layer of plastic film can Jiediao Mody?

A: This layer of the plastic object main mold is to prevent the laptop during transport and display LCD screen has been scratched or dirty. Buy home, there was nothing – because the picture quality will not only affect the thinking, as long as attention to the usual habits and maintaining a good image on it.

Q: The screen is dirty how to clean it?

A: If there is only dust, but no other quality treatment, then you can first try to blow the dust, then the reuse of a soft, damp, soft cloth to wring dry, if not water may flow along the surface of the screen was damaged ignition coil. For oil, or more difficult to remove stains can buy 40Y6797 special cleaning remove LCD screen, remember there is no quality assurance not to use a cleaning agent or corrosive chemical composition which will affect the screen.

Q: So how clean the keyboard is dirty?

A: The surface of the keyboard only cleaning with a soft damp cloth can be. For the keyboard, the dust on the substrate must be cleaned to remove the keycap 11. With the flathead screwdriver in the corner keycap a lever slowly upward, keycap can be taken down, but when the keycap to take action must be careful not to pry off the keycap or stent.

Q: Why is the screen of my laptop on the lower part of the darker side that some of them?

A: The notebook LCD lamp backlight LCD on the back, while the brightness of the backlight is directly dependent on the number and brightness of the lamp. The number of desk lamps at least two LCD plus screen brightness and even six lamp. The laptop is the power consumption and size constraints, only a lamp and smaller, multi-positioned in the middle of the screen depends on the position. A limited because of the lighting, so that the bottom than the top of the screen Shaoan. While the contrast is not great, are normal.

Q: The new battery for the first time when you need to use the same charger as the phone 12 hours Mody?

A: The circuit design of notebooks as the number of mobile phones improved, and almost no memory effect. However, like the hands of the Dell XPS M140 battery factory to the user that there is a lag, to allow a new battery can be in a better state to work, activating the battery and the work of ‘calibration is always necessary to do so. They do not need to wait a certain load for 12 hours because the battery, once full, circuit protection Internal battery automatically stops charging after full charge is unscientific and has been no practical importance.

Q: Why my battery does not use electricity has fallen?

A: Because the absolute humidity and not isolated, environmental impact, the battery consumption of all it is a natural phenomenon. According to recent experience and the quality of the battery every three to four days from about 1%, as not all belong to a significant decline in a normal phenomenon.  

Q: When you use the power does not remove the battery, it will accelerate the depletion of the battery?

A: In general, laptops are designed to load at least 95% of electricity will be charged, but the hp Pavilion dv8000 battery itself will naturally wear, then remove or not remove the base are the same. If she is deported, I suggest not connect too frequently. Caused by interface problems. In the long term without the battery, the battery must be wrapped in the membrane of fresh and placed in a cool, dry, and I remember a month or so used at least once the battery and charge the battery in order to avoid loss of activity.

Q: Why does my fan switch in the trunk when no reflection of what?

A: The laptop has its own temperature control, if you turn the fan stops spinning after self-test. Only when the machine reaches a certain temperature will accelerate the rotation. So when you heavy work such as reading decoding broadband video, 3D games, they will see the fan spinning at high speed.

Q: Why use batteries when the screen is sometimes given a slight creak?

A: When you use the toshiba PA3191U-3BRS battery, portable power-saving features will play a role. At this time the voltage is in the notebook evolving through the screen flow coil ignition coil are evolving, when its high tension ring for the issue of conversion. If the laptop poor electromagnetic shielding, the user would have heard such voices.  

Q: Why should I book a connecting part of the LCD will be fever, not the quality problem?

Answer: For this part of the heat that we should not be too nervous. Because of the ignition coil laptop LCD screen almost all placed in this position while the ignition coil is a major element of the circuit and the supply spool. Circuits and electricity when the work will be heating coil, it is normal.

Q: The battery is not fully used to the load is reduced life expectancy?

A: The battery is fully charged, depending on the number of computing life expectancy, we use lithium batteries are generally 300-400 times. Of course, you do not have to worry about the power will be connected to recharge the apple MacBook 13 inch battery once. In fact, the cycles of the battery usually only when the accumulated 80-90% of electricity will increase.

Q: The device can be converted to another system?

A: Many new laptop users are asked this question. System of the laptop was not operating under dead and desktops, as in the case of a driver support, you can install any operating system.

Q: My laptop is a P4, but why the feeling is slower than many of the same office?

A: The main reason lies in the hard disk. Now the mainstream of regular laptop hard drive speed is 5400 rpm, while the computer to pass the current minimum is 7200, when the hard disk is limited overall performance of a critical material , so compared to desktop machines to slow to slow in the disk drive.

Q: The charge and discharge frequent Mody may damage the battery?

A: Although there is no lithium batteries used in portable memory effect, but the frequent charge and discharge of their lives are still affected. Usually less than 10% as much as possible after the re-pricing power the TravelMate 290 battery life is conducive to growth. But if there are special needs, and sometimes charge ahead, its impact will not be too many.

Q: long without the battery, it should save it in what state? The need for ventilation of the battery?

A: The defense saved or at least put the shell is not correct. If you are a time not to use lithium batteries, should include in its capacity of 40 ~ 60% saved, this state, the discharge of the battery is relatively slow, and can be stored for long periods.

Q: Sometimes after accidents laptop, there is no way to simply remove the battery quit. Is that mistaken?

A: This approach is obviously very harmful. Because in the waking state, the memory is switched on and working, if the rash to take the IBM ThinkPad T60 battery is directly related to waste a lot of data, not in the socket when the AC adapter to take the battery, a This approach can be a hundred or harm anyone’s interests.