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- เผยแพร่เมื่อ 6 ก.ย. 2024
- View full lesson: ed.ted.com/less...
It might sound like science fiction, but if you press on a crystal of sugar, it will actually generate its own electricity. This simple crystal can act like a tiny power source because sugar happens to be piezoelectric. Ashwini Bharathula explains how piezoelectric materials turn mechanical stress, like pressure, sound waves and other vibrations into electricity, and vice versa.
Lesson by Ashwini Bharathula, animation by Karrot Animation.
![เกิดใหม่ทั้งทีก็เป็นสไลม์ไปซะแล้ว ซีซั่น 3 - ตอนที่ 69 [ซับไทย]](http://i.ytimg.com/vi/QuodflInQT8/mqdefault.jpg)
I used to dig for quartz crystals in Arkansas, and one time had a pair of "pounders" which were too damaged or too cloudy to be worth much so I used this pair to rub together at night to get them to glow! Great fun was had by all.
So you rubbed two crystals and they started to glow with electricity? Thats neat
Are you serious? That's possible?
That sounds sick
Unpolished crystals are powerful
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Those hippies were right. Those crystals vibrate with energy!!!
John Smith lol I have crystals for my chakras
They also know of energies beyond eletricity.
😂
Spiritual and scientific things are actually the same but different like fraternal twins
@@johnathansmith713 Mhm! Spirituality and Technology are def the same, just retold in different stories.
Hats off to your creative content!
You really inspire us make interesting content so that people watch more and more!
+Forty Two your content is really cool, i really love your channel.
Forty Two so true
+1
Forty Two Hey aren't you the answer to life, the universe and EVERTHING!!??????? 😂😂😉
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
I showed my biology teacher your channel and now he shows us all your newest videos.
Now I can safely say that this is the best animation I've seen on this show since the begging, I mean God damn this is better than most of the shows on TV. Great work, keep it up.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
I am currently in the midst of preparing my M.Tech thesis in harvesting piezoelectricity and this video was an amazing watch!! It so vividly explains the phenomenon with utmost clarity and simplicity. Loved it! :D
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Could I possibly access your thesis? I am doing a project that involves trying to incorporate piezoelectric generators into a rocket during flight. I am trying to find a way to increase its capabilities but haven’t found much.
This is a fantastic animation style.
Austin Anderson I am interested to know who did this animation ?😭
It's the first time I came to say that about TedEx talks. It's amazingly animated!
In the description is says Karrot Animation did it.
yeah man..already checked their website. They have made pretty awesome stuff.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
"silk is piezoelectric"
*takes every single piece of silk in the house and stack them and sit on them*
Electrocuted by lingerie. Your contribution to science will be remembered. RIP.
That's why women are so powerfull
matroosoft wow sounds sexist
Guys don't wear lingerie so the joke is not sexist.
gay men do
at least my neighbor does
I remember hearing that these are also used for more powerful microscopes. When they have to focus in on an object in the nanoscale, without breaking or dulling the tiny fragile equipment(specifically the cantilever), they need to "inch" one way or another in extremely small units. They run current through piezoelectric materials, which then move the probe part of the microscope up/down or sideways just slightly.
I'm not very sure about what I'm saying, does anyone know enough to explain it properly?
No I don't, but I'm replying in case someone explain it :D
Well, fuck. Not even I knew that. Thanks for mentioning that, mate.
Mira Jain replying to learn more about this
i dont realy know anything about this but it does make sense becuse in the video they say that when you pass a current in this typy of materail it changes its size.
soo if you can make a small current that will allow you to make small changes to the size and that can move the microscop a littile.
i guss...
When a voltage (electric force) is applied to both sides of the crystal, the charged particles that make up the crystal redistribute themselves to align with the electric field (so negative charges move towards the positive side and positive charges move towards the negative side). Depending on the polarity (direction) of this voltage, the crystal will either compress, or expand, this is basically what is shown at 2:45, but in reverse. This small shift in position can be enough to move an object into focus on a microscope.
They also use this technique in manufacturing to produce very small objects with precision, such as the billions of transistors inside a computer chip. In this case, they will use many crystals to get the exact positioning required.
This is the part of my education that was wiped out from seizure activity. So many questions that have been in my mind for a decades are being answered. Thank you! Millions of ideas are springing from this right now i have to research more.
"Welcome back to my laboratory, where safety is number one priority" *puts on cool shades*
If, as this video suggests, the quartz produces a current when constant pressure is applied to it, what factor is stopping us from just stacking a bunch of weight on the crystal and producing infinite energy...?
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
you guys have really helped me out. thank you so much! my school isn't great and I got an academic achievement award thanks to you! thanks!
-Katie MJ
DuckJoan 04 your lucky 😥
This was an absolute delight. Thank you, all involved! I do wish that learning too, all manner of signalling molecules, carried with it just such a soundtrack...
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Your animations are not only interesting and well done but also keep some (medical) students from failing. Thank you!
the animation and the knowledge in this video are superb, thanx for all your work.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
this is one of the most BEAUTIFULLY animated episodes yet!! hats off, TedEd!!
the animation was awesome in this video
The graphics are amazing! Holy crap, keep those animations up!!
I only knew about Piezoelectric crystals because they're used in the pickup systems for Acoustic Guitars, allowing them to be amplified like an Electric Guitar without a Microphone :D
Piezoelectric pickups are often used on acoustic instruments, particularly guitars, and I've always wondered how they work. This was a great explanation. I've also heard a few different pronunciations over the years that I've been playing, so it's nice to finally know which one is correct.
I really want to look more into this as an energy source.
This should be shown in schools
So that's why Dr Robotnik always wanted the chaos emeralds!!!
Interestingly enough, there is almost no energy in compressing a solid since energy is defined as KG m^2/s^2. So using PZT-5A as an example. If you have a 37 mm diameter, 5 mm thick piece of PZT and you press on it with 9.81 N of force or the equivalent of setting a 1 kg weight on the PZT. The PZT will compress 164 picometers so the energy expended compressing the PZT-5A is 9.81 N * 164 pM which is around 1.648 nJ.
Now you use the D33 value and the G33 value and the pressure in pascals to determine the power generated. They cruely list the values in C*m^2/N which is c / (N/M^2) and N/M^2 is a pascal. But for PZT the G33 is 326 pC/PA and 2.4 mV/Pa. pressure is force / surface area. So the PZT-5A experiences 2281 pascals of pressure. So the PZT-5A will make 24.35 mJ of energy.
The opposite is true when using the PZT-5A as a prime mover. It's like a striling engine. If you use a striling engine to move heat energy aroun, it's a heat pump and has a COP > 1 but if you use it as a heat driven engine, it has a COP that is equal to 1/COP when you are using it as a heat pump.
Perfect inversion of energy. It's also why stirling engines are not free energy.
this one is already changed the world.
Fascinating. I can't believe this actually existed for so long
Ted ed is just ridiculously awesome. Can you guys do a video on more basic things. Like the simple electromagnetic effect/ Electromagnetic waves? Especially relative to what is the electric field/magnetic field changing?, How can there be no time lag between these two fields?.-Thanks ted ed
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Piezo discs are inside of those electronic drum pads. The harder you hit the drum pad, the louder the controller plays the drum sound.
I can see a pretty good portable power source powered by something like this; Modify a crank clamp (Those tools you turn the crank and it squeezes what's between its two plates) so it has conductive ends (The parts that push on the object) and have wires going from the clamps to an output, secure a properly cut Quartz Crystal in between so compressing it will create charges on the clamp plates, and that output can power something. Also, make sure you put on insulators where appropriate to keep the user from getting shocked by accident. It's not too expensive, capable of being carried like a water bottle, and can probably work a light or motor for a good long while. (I came up with this before today, 8:40 a.m. on 7-17-2017) The low current might be a problem...
FINALLY - I learned something today! Thanks always, Ted-Ed!
Hi😁
Thank you Scott
this was a beautifully animated and informational video, I learned so much from this short video!
Show de bola essa explicação sobre os materiais piezoelétricos.
but how does the electrical current effect the crystals on molecule scale?
they may change shape overtime.
If you use electromagnetic fields to "squeeze" the crystal instead of doing it physically the energy output would be exponentially greater.
Is this why people "charge" there crystals using the sun?
animation is perfect. thank yoh for so talented person
the sidewalk charging would be revolutionary and super useful
animation is top notch
Could you do a video on what exactly electricity is as well. I've watched a couple videos on electricity, like this one, but I don't know what it truly is or how it behaves.
BTW those too scientists are my favourites when it comes to TED-Ed animations.
Well, so squeeze the energy out from space using the dynamic Casmir effect using these....
Amazing animation ! 🔥
Also, iirc, most computers use a piezoelectric crystal (called a clock crystal) to generate the clock signal that keeps all their components in sync with each other.
Now that I know it would cost so much to produce the material composed of crystals, I can shelve the idea. I could never save enough energy to pay back the production cost.
the animation was LIT.
That was some amazing animation.....
Oh man, the last part would be a huge benefit!
I feel like this energy source is under appreciated charging a phone walking isn't a wow moment considering the practicality of energy through crystals an sounds is a wow moment
For all you know this is the missing element to infinite energy I mean it's powered by noise an motion for all you know there's a crystal better than quartz that could create large amounts of energy
What I'm missing here is a mention of how efficient this technology is... Always with the missing information.
^
Exactly,
The video is 5 minutes long! Should they explain everything?
Excellent explanation..... It will be used to my seminar presentation on piezoelectric materials
What if we used these crystals at concerts? The noise would be converted into electricity, which can be used to power the equipment.
OMG! The animation *has upgraded*. So cool!
👏👏👏👏👏👏
bullets that fry electrical circuits? Fusion reactors that generate heat on their own? Spaceships that gain power by colliding with specks of dust?
Clever, using people's activity to power the lights.
as I am not an electrical engineer nor anything similar. Mind = Blown
Wish if ted ed videos were long enough
In technology nothing is absolute ,we always have something to upgrade and move for better technologies.
SO WHEN YOU RUN AND YOU COMPRESS YOUR BONES
YOU GET LIT
This misinformation is unacceptable. The voltage generated may be large, but the current is incredibly tiny. When the clapping to trigger the lights example is used, seperate machinery needs to detect the charge difference and turn on the lights (powered by mains). The amount of footsteps needed to power station gates or a dance club is ginormous and completely impractical. A child may watch this video and take in without questioning these false examples.
also the claim that unit cells on some crystalline structures lack o a center of symetry es completely wrong, they all do
And they show crystals generating continuously, when it's only on pressure change.
Unacceptable indeed for educational stuff.
DAMN, TED. How many other videos may be filled with misinformation?
Although I agree with that, TED was simply giving an example. It would require an immaculate amount of Piezoelectric Energy to run street lights. An alternative could be that the Piezoelectric Energy helps charge the street lights, similar to a hybrid car.
i like these types of ted ed videos
This is so cool! I loaf this channel
I'm actually learning about this right now in my intelligent structure class
beautiful animation as always
Well the first thing I think of, what can't we use with that, that's the first answer I have, and probably the last. Does that work with a hydraulic press also for more Force?
Such an awesome explanation!!! Very interesting too
these lecturers always have really silky and soothing voices, it's so nice
Very useful ill suggest to be next video also by this based on by diff electricity topic
Great Ashwini bharathula...and karrot.
How does a used quartz crystal replenish it's Electrons after being compressed, are new ones made somehow or are Electrons brought in from the crystal's surrounds.
Just take two agates and grind them together in your hand in total darkness and watch the sparks. That's how the fire breathing leviathan made fire when he belched methane gas from his tummy and chewed rocks having quartz at the same time. The sparks from crunching on rocks like chickens do set the methane gas from his stomach on fire. Animals that lay eggs, eat pebbles to make shells for their eggs. Man walked with dinos. Anyway the sparks are neat.
That was an amazing video ... my mind was blown
This electricity is produced by this effect or phenomenon which is experienced can feel convenient and unfriendly method to generate the current. And is just a form of electricity though is true only if one can know this effect and the crystal.
The Spark.
Put a crystal in a position which compresses it without power, like putting weight on it, and you have power
Thanks for the video, y'all did a great job! I love the visuals
So WHILE a crystal is being compressed, it generates a direct current in one direction. Once the compression stops, no current is generated. But, WHILE a compressed crystal is being released (decompressed), it generates a direct current in the opposite direction. Once the decompression stops, no current is generated. Is that right, or is there more to it?
This video was pretty informative about piezoelectric materials, It's a bummer that I already knew about this stuff for a long time now which kinda made the video less exciting. I guess the only thing I learned is the atomic structure symmetry.
Is this what smarter every day once talked about? Now we have the answer!
awesome channel
Can the sheer pressure of the ocean dephts used as source of pressure to harvest this source of electricity? I was thinking of presure and bouyancy as for self sustained batteries for underwater drones... question being, does this pressure need some ammount of mommentum to it or relative gradual, even static pressure generate this piezoelectricity? *not any sort of degree on so thanks for patience on blunt language and concepts*
How come people dislike such a cool topic?
why I never heard of this awesome discovery ? damn
Very well-done video! Precisely what I needed; thank you!
so it need an alternating movement to the Cristal or just putting constant pressure produce electricity ?
i searched up piezoelectricity for an assignment
dear God, intelligent and curious people are amazing
what makes Crystals to produce electricity? is it really squeezing causing electrical disbalance or vibrations?
Awesome animation, nicely explained. I also wanted to know that for a while but noone knew and i forgot about it.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
But how do sound waves lead to a generation of electric currents in those piezoelectric materials? Is it by the same principle as mechanical pressure?
So theoretically, if we put piezoelectric crystals in shoe soles and connect them a capacitor, then walking or even just standing will charge the capacitor?
Amazing animation and flow of information.
This video needs more views!
So can we use it in high pressure enviroments to generate electricity? For exemple in the deep oceans or other planets?
This animation is top notch!
Superb !!!!! Now words to describe
This video was sooo amazing and unique!! I loved it!
Smarter Every Day has a really cool video where you can see the sparks in slo-mo when Destin crushes some Life Savers
Thank you.This video is useful in many ways.
Very cool! I love learning about things like this. Physics is my fav subject
TED-Ed, the only youtube channel not asking for subs, likes or comments
can you make one on pyroelectricity as well?
So what you are saying is if you put something on top of the pyramid they will trigger electrical activity?
This is awesome! Thanks TED-ED !
I remember that back in the day mica the mineral was used to make computer chips