The video is well done and the content is explained at a level easy enough for anyone to understand, but advanced enough to help you in the subject. He starts the subject at a level assuming a extremely elementary knowledge and slowly works up the ladder of knowledge. If you are wondering if this is the video to watch to help you understand the Piezoelectric effect, rest assured that you have found the right video.
are you kidding me? youtube has saved me thousands of dollars avoiding costly mistakes fixing things on my vehicle and other tips. You Tbe videos have taught me far more useful stuff then anything in my school years that most things have turned out to be lies
This is the first compelling science video I was able to understand in a while. So it's not just the organised structure that gives it the piezoelectric effect, it's also the arangement of the charged particles. I've heard that bone is a good piezoelectric material. I'm guessing that's how bone conduction works, as the sound distorts the structure of bone, converting it to electrical signals, then it reaches the 8th cranial nerve which get's processed by the brain as sound. I'm a bit foggy about the mechanics of sound hearing though. The ear seems like a very complicated piece of machinery.
Hello Paul! My name is Rodrigo Ruz and I am a young scientist from México. Do you think that using PVDF crystal would be a feasible option to produce energy with sound?
Excellent video, thank you very much!! The explanation in 4:20 has opened my mind... One question here please: I did not understand the reason in putting the negative charges in the upper or lower part of the crystal, and viceversa for the + charges, in the 9:37 minute... Thank you!
Silicon dioxide is slightly polar, that is, the molecule is slightly more positive on one side and negative on the other. Water has similar characteristics. In a normal lattice arrangement, there is no net polarity. However , when distorted then there is a minute polarity on surfaces depending on the stress placed on the crystal.
Question: When you squeeze the lattice laterally (4:57), do the four "middle" Si+ and O- cancel out their energies so they don't influence the current?
Thank you sir. I've always had an insatiable appetite for scientific knowledge and RUclips & science kits I buy from Amazon are definitely my go to places for acquiring just that.
The arrows representing the current (electron) flows within the distorted quartz (at 5:13 and 5:50), aren't they pointing in the wrong direction based on the description of the electric field created by compression? The electrons flow would be from the (electron higher density) o- to the (electron lower density) si+. Alternating the compression direction would still generate ac current, just the arrows on both compressions should be reversed.
Great Video, Thank you, But here is something, I didn't get. Why quarts polarized in minus and plus, in first level, when you pushed on it, up side was one oxygen and down side was two silicon, why top in becomes more positive ? and in other case, why bottom in becomes more negative ?
@@189vansHey mate, its because imbalances and because it is not in simetry, top side is very last edge of the point with silicone and bottom side is very last edge of oxygen, so it takes potential different from the surface, lets say like that, and when i levels, it takes the charge that is the most.
Actually we can compress one quartz vertical and the other on the horizontal then a dc battery results and we could use it to power device and if we use it to be compress one under total stable with no molecules oscillator and compare to a normal crystal then we get natural crystals frequency of atomic frequency like French measure atomic clock
If you had a battery to store ac produced by this effect, then used it as a supply for the same same crystals, what would be your energy lost? Or would it generate more than it lost?
Thank you Sir. In terms of collecting or harvesting this energy production to charge any rechargeable portable devices, do we need to convert it from AC to DC? There are many energy harvester module sold in the market today but I don't how they are being used or applied
This is a lot like how magnetic and electric forces are generated, only the actual molecules move physically. I wonder if there is any magnetic component to the molecular charge as well? A question for future explorers of the very small.
So if electrical current is generated in crystalline rock in our crust - as a capacitance effect to our electrically varying ionosphere - we have a means for huge pressures to arise from distortion and further electric currents in the Earth?
I'm sorry I'm taking the liberty to intrude for something that's not directly related, this is the only way though to find something that can't find as easily as I thought one could : Are piezoelectric materials 'energized' by way of hydrostatic pressure (changes) of any liquid, off course, but mainly water. Thank you.
Well I guess it would, as when lightning strikes it actually breaks some bonds in the air causing nitrogen from air to form a new bond with water forming nitric acid.
unit of piezoelectricity are carge per kilogram per degree celsius per kgf per second square since instantaneous acceleration of forces giving rise the stress of the material which squeezing the electron or give it rectifying?
Umm, a slight correction there. A transducer is actually a device that converts some form of energy to another and in this scenario, the transducer converts electrical energy to sound energy and vice versa.
Sir, I had a question: If a constant stress is applied on a piezoelectric material, will there be a continuous electric potential produced? Or potential will be produced only for an instance and then we have to relax the material again and apply stress again and repeat the cycle as long as we need electric potential?
I understand the piezoelectric and the inverse piezoelectric effect, but how is a transducer able to do both simultaneously? Like in an ultrasound scan.
The earth's magma is very rich in silica. If silicone dioxide is affected by sound waves and electricity causing its lattice structure to vibrate, will a failed star, white star emitting massive electromagnetic wave towards the earth cause the magma chambers under the volcano to become heated up and more viscous thereby inducing an eruption?
guess it depends on the exact amounts of matter and energy you're dealing with. Seems like it would be tough to tell how much energy is gonna get through the atmosphere then through the crust to affect the magma. I'm not very interested in the answer, but maybe you could isolate your variables, look up the appropriate equations, and grind it out? (I'm curious about just how much energy you need to significantly heat up that much molten rock...seems like a lot).
Could this be a potential source of free energy if we were to convert the vibrations from electromagnetic forces into electromagnetically excited acoustic noise, and in turn use massive quartz crystals to transduce that electromagnetically excited acoustic noise's vibration into electrical energy....?
the electromagnetic forces would be pretty constant (until the end of the universe I guess) so if there were a way to create a tone using chambers of some sort fashioned in such a way that it creates a steady humming tone, one could possibly use that vibration piezoelectrically....
hi sir i hope u r video was very useful to everyone to learn the concept but if u don't mind would like to explain me the ultrasonics chapter in detailed with an useful video
Hello! Very helpful video. I have a coupe of questions about the argument. Is this phenomenon manifested in a certain scale in every ceramic composition? If it's not, which are the main parameters that make a ceramic composition (crystal) a piezoelectric one?
No it does not manifest in all crystals. In fact, crystals can not have centric symmetry. There are a range of crystals that do show the effect. The effect predominantly is determined by the charge density upon pressure applied and the relative elasticity of the bonds between the atoms
They need to be arranged in crystalline lattice and the molecule needs to be polar so that there is a slight positive charge one end and a slight negative charge the other, when distorted Sorry for the late reply
Please, I did this practical experiment. My AC voltage was varying , sometimes, 10V sometimes 2 V. That's not my problem, the problem I'm facing is, the rectifier circuit absorbs all my ac voltage and delivers value of around 0.5V as the DC output, please, what should I do?
I an not an expert on the piezoelectric (aka I am not an electrical engineer) but a current should remain as long as there is a potential difference. SO in theory, if you apply pressure to it, a PD should remain and so a current could be maintained. I am happy to be corrected
Perhaps thinking of the object like a shape that does not want to change (stiff/no flex) but still conductive. if you connect the compressed side with the uncompressed side, the fact that the material is conductive makes it so that a circuit is formed and the electron density tries to balance out. I'm only just discovering this stuff but that makes sense to me. If there is no movement and the electrons are already balanced out again (ignoring resistance of circuit) then there can be no current because all materials in the circuit are balanced actually, even if you are still deforming the objects shape. Potential energy is still held in the crystal though because of its stiffness(elasticity?).
I subscribed:) and best explanation about converting sound to emf ,soo now I'm trying to find a way to transfer energy from one place (sound waves) to ring candies in the box (emf) to get energy produced on long distance? :)
Thank you so much for this! Do you still reply? I am wondering how the crystal converts AC to Sound and visa versa? And why it does not to replicate what is introduced, (why does it not produce AC current when an AC current is introduced?) Thank you
what would happen if I would keep a crystal of quartz under a constant mechanical load along the force axis? Would the voltage vanish after a milisecond moment or would it remain??
+anubhab kundu in theory a potential difference would remain but it would be DC only. Although not an transducer expert, a DC output would be problematic in trying to amplify the signal.
High School Physics Explained thank you for replacing electrochemical batteries!!.....I think now all vehicles can be driven by DC piezoelectricity which never requires a juice-up.
+anubhab kundu I don't think a current will flow just because there is a potential difference. Besides, no more energy input via pushing would mean no energy output due to LCE
Very basic , but very good description of whats happening well done . But as with all good descriptions of whats happening it failed to explain what was happening. . I find our modern education system is very good at descriptions of whats happening without ever explaing why .
That is intentional. The video originally is intended to cover the NSW physics syllabus and is high School oriented. To go deeper, explaining why it occurs would actually complicate things for students. Nonetheless a follow up video would be a good idea.
SBS' (The broadcaster) subs always appear in yellow fill, black stroke. A practice that pre-dates Premier text presets and possibly the invention of non-linear digital editing software.
The video is well done and the content is explained at a level easy enough for anyone to understand, but advanced enough to help you in the subject. He starts the subject at a level assuming a extremely elementary knowledge and slowly works up the ladder of knowledge. If you are wondering if this is the video to watch to help you understand the Piezoelectric effect, rest assured that you have found the right video.
I have seen around 7 to 8 videos on piezoelectric effect and your one explains it the best. ☺️
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Holy crap! This is such a brilliant explanation. This channel is so underrated.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Best video on internet explaining piezoelectric effect..appreciated
Thanks
Brilliant!! RUclips has been my best teacher after school... Thanks for your great talk.
Good for you to take the initiative for you own education.
Khan academy is a good way to go! sry to advertise other educator, but khan academy has covered all high school fields.
True story electric aquarium hydrometer.
are you kidding me? youtube has saved me thousands of dollars avoiding costly mistakes fixing things on my vehicle and other tips. You Tbe videos have taught me far more useful stuff then anything in my school years that most things have turned out to be lies
No problem. It’s what ever helps the student.
This explanation is great. I couldn't understand Piezoelectric effect, but after watching this video I completely get it. Thank you very much indeed.
Really helped my understanding of PiZeOLectRic crystals and the EM spectrum overall. Thank you again!!
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
It is remarkably simple but very useful and effective to learn about piezoelectric fundamentals
It really makes sense...very nice explanation,sir.
Short and organised video! KEEP UP!!!
Can we just take a moment to appreciate the 2D moving model 👏🏾. Great explanation for a Highly interesting subject.
Thanks very much.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Very informative and simplified explanation!
Thankyou for explaining this topic as it looked so daunting when we were set it as work but now I understand it and am ready for my physics lesson
This is the first compelling science video I was able to understand in a while. So it's not just the organised structure that gives it the piezoelectric effect, it's also the arangement of the charged particles.
I've heard that bone is a good piezoelectric material. I'm guessing that's how bone conduction works, as the sound distorts the structure of bone, converting it to electrical signals, then it reaches the 8th cranial nerve which get's processed by the brain as sound. I'm a bit foggy about the mechanics of sound hearing though. The ear seems like a very complicated piece of machinery.
Glad it helped. 👍
Please share with friends if you think they would benefit.
Hello Paul! My name is Rodrigo Ruz and I am a young scientist from México. Do you think that using PVDF crystal would be a feasible option to produce energy with sound?
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Excellent video, thank you very much!! The explanation in 4:20 has opened my mind...
One question here please: I did not understand the reason in putting the negative charges in the upper or lower part of the crystal, and viceversa for the + charges, in the 9:37 minute...
Thank you!
Silicon dioxide is slightly polar, that is, the molecule is slightly more positive on one side and negative on the other. Water has similar characteristics. In a normal lattice arrangement, there is no net polarity. However , when distorted then there is a minute polarity on surfaces depending on the stress placed on the crystal.
High School Physics Explained Thank you very much!
You're a life saver sir xD
Perfect! I love your teaching style!!! New sub❤
Thanks for your support!
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
That is a really good explanation. Thank you so much ❤️❤️❤️
Excellent explanation, Paul! Thank you. I Wish you were my college physics teacher back in the day...
Happy to help
Question: When you squeeze the lattice laterally (4:57), do the four "middle" Si+ and O- cancel out their energies so they don't influence the current?
Excellent explanation, thank you for your time.
these videos are really helpful
The best explanation
Thank you sir. I've always had an insatiable appetite for scientific knowledge and RUclips & science kits I buy from Amazon are definitely my go to places for acquiring just that.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Amazing explanation! Thank you.
Thank you!
ur explanation is great. you are indeed real teacher, how can i do research on piezoelectricity.
Very good, will use for our students.
Piezo crystal is above neutral substance of Ee--&low Ke applied on it -energy will be amplified as h iher leval of Ee with Le -+
The arrows representing the current (electron) flows within the distorted quartz (at 5:13 and 5:50), aren't they pointing in the wrong direction based on the description of the electric field created by compression? The electrons flow would be from the (electron higher density) o- to the (electron lower density) si+. Alternating the compression direction would still generate ac current, just the arrows on both compressions should be reversed.
I very much like the presentation
Thank you Sir :) well explained!
perfectly explained ,thank you so much
Thank you - excellent lesson well presented
Super brilliant explanation!!!
I’d really love to see your explanation of thermoelectric materials.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Thank you very much. Really Appreciate.
Very helpful Sir!
Excellent one👏
Thanks Paul, very useful.
Is it possible to create sounds in the body? Let's say nanocrystals were ingested in the body. Would directing energy at that site induce sound?
Thanks Paul.Much appreciated...
well explained !!!
Great Video, Thank you, But here is something, I didn't get. Why quarts polarized in minus and plus, in first level, when you pushed on it, up side was one oxygen and down side was two silicon, why top in becomes more positive ? and in other case, why bottom in becomes more negative ?
Very great question I would also like answered!
@@189vansHey mate, its because imbalances and because it is not in simetry, top side is very last edge of the point with silicone and bottom side is very last edge of oxygen, so it takes potential different from the surface, lets say like that, and when i levels, it takes the charge that is the most.
Actually we can compress one quartz vertical and the other on the horizontal then a dc battery results and we could use it to power device and if we use it to be compress one under total stable with no molecules oscillator and compare to a normal crystal then we get natural crystals frequency of atomic frequency like French measure atomic clock
What happens when you apply a direct current to the Crystal? Does the crystal align itself to the direction of flow?
Excellent. Thank you
Excellent!
If you had a battery to store ac produced by this effect, then used it as a supply for the same same crystals, what would be your energy lost? Or would it generate more than it lost?
Appreciate you sharing! Mahalo! Very interesting.
awesome video. thank you :)
This video is so cool
Will applying weight on a quartz start a charge too?
Seems like Professor Snape is taking physics class instead of potions😂.Btw, Great teaching !💞
Omg!!! This guy explained this so simpley and elegantly. I understood the phenomenon in minutes.
Thankyou for this :)
Thank you Sir. In terms of collecting or harvesting this energy production to charge any rechargeable portable devices, do we need to convert it from AC to DC?
There are many energy harvester module sold in the market today but I don't how they are being used or applied
If you make one, yes. If the device is a charger - it has that built in.
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Can you apply pressure from the inside, by a hollow crystal filled with gas?
This is a lot like how magnetic and electric forces are generated, only the actual molecules move physically. I wonder if there is any magnetic component to the molecular charge as well? A question for future explorers of the very small.
good stuff thanks.
Good Video, Thank..
Thanks alooooot brilliant
So if electrical current is generated in crystalline rock in our crust - as a capacitance effect to our electrically varying ionosphere - we have a means for huge pressures to arise from distortion and further electric currents in the Earth?
I'm sorry I'm taking the liberty to intrude for something that's not directly related, this is the only way though to find something that can't find as easily as I thought one could : Are piezoelectric materials 'energized' by way of hydrostatic pressure (changes) of any liquid, off course, but mainly water. Thank you.
helps me a lot!!!
THANK YOU!!!!!!!
Hypothetically speaking, could a very high alternating current deform the lattice in such extent that it would break the Si-O bonds?
Well I guess it would, as when lightning strikes it actually breaks some bonds in the air causing nitrogen from air to form a new bond with water forming nitric acid.
unit of piezoelectricity are carge per kilogram per degree celsius per kgf per second square
since instantaneous acceleration of forces giving rise the stress of the material which squeezing the electron
or give it rectifying?
is the working principle of transducer in echo sounder and in ultrasound are same?
Umm, a slight correction there. A transducer is actually a device that converts some form of energy to another and in this scenario, the transducer converts electrical energy to sound energy and vice versa.
Yeah, this is a huuuuge misstep in vocab, even if its for beginners/kids in high school.
+Adam Loi I stand corrected thanks.
Sir, I had a question: If a constant stress is applied on a piezoelectric material, will there be a continuous electric potential produced? Or potential will be produced only for an instance and then we have to relax the material again and apply stress again and repeat the cycle as long as we need electric potential?
Great question. Need to be oscillating.
@@PhysicsHigh Thankyou for the clarification.
can piezoelectric crystals be capable of producing only the alternating current?
I understand the piezoelectric and the inverse piezoelectric effect, but how is a transducer able to do both simultaneously? Like in an ultrasound scan.
Why the piezoresistive effect in crystalline Silicon is larger in p type doping than in case of n type doping?
The earth's magma is very rich in silica. If silicone dioxide is affected by sound waves and electricity causing its lattice structure to vibrate, will a failed star, white star emitting massive electromagnetic wave towards the earth cause the magma chambers under the volcano to become heated up and more viscous thereby inducing an eruption?
guess it depends on the exact amounts of matter and energy you're dealing with. Seems like it would be tough to tell how much energy is gonna get through the atmosphere then through the crust to affect the magma. I'm not very interested in the answer, but maybe you could isolate your variables, look up the appropriate equations, and grind it out? (I'm curious about just how much energy you need to significantly heat up that much molten rock...seems like a lot).
hello sir !! how much energy we can produce with same setup using vibration in normal day to day life
Brilliant
Awsome video :) what happens to a crystal under continuous pressure?
Can you please explain Ferroelectric and pyroelectric effects with suitable example?
have you considered the possible effects of spinning crystals while applying sound frequencies through them?
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Nice one
Could this be a potential source of free energy if we were to convert the vibrations from electromagnetic forces into electromagnetically excited acoustic noise, and in turn use massive quartz crystals to transduce that electromagnetically excited acoustic noise's vibration into electrical energy....?
the electromagnetic forces would be pretty constant (until the end of the universe I guess) so if there were a way to create a tone using chambers of some sort fashioned in such a way that it creates a steady humming tone, one could possibly use that vibration piezoelectrically....
hi sir i hope u r video was very useful to everyone to learn the concept but if u don't mind would like to explain me the ultrasonics chapter in detailed with an useful video
Hello! Very helpful video. I have a coupe of questions about the argument. Is this phenomenon manifested in a certain scale in every ceramic composition? If it's not, which are the main parameters that make a ceramic composition (crystal) a piezoelectric one?
No it does not manifest in all crystals. In fact, crystals can not have centric symmetry. There are a range of crystals that do show the effect. The effect predominantly is determined by the charge density upon pressure applied and the relative elasticity of the bonds between the atoms
Thanks a lot.
What are the properties a material should have to exhibit piezoelectric effect?
They need to be arranged in crystalline lattice and the molecule needs to be polar so that there is a slight positive charge one end and a slight negative charge the other, when distorted
Sorry for the late reply
What would happen if this energy was directed at a land mass? Possible effects?
When was the earliest model of the molecule of quartz known?
I ask because it looks just like a Star of David. Egyptians were nuts about quartz from which a lot of Jewish culture comes from.
Is our physical energy used to compress the Crystal in lighter to produce a spark in order to burn the fuel?
Thanks..😊
Please, I did this practical experiment. My AC voltage was varying , sometimes, 10V sometimes 2 V. That's not my problem, the problem I'm facing is, the rectifier circuit absorbs all my ac voltage and delivers value of around 0.5V as the DC output, please, what should I do?
Everything I have seen using a pulsating action on piezo material. If you compress with out pulsing will the current continue?
I an not an expert on the piezoelectric (aka I am not an electrical engineer) but a current should remain as long as there is a potential difference. SO in theory, if you apply pressure to it, a PD should remain and so a current could be maintained. I am happy to be corrected
until the compress breaks the crystal, i guess
I'd intuit that since there is no change in energy density there will be no change in electron location.
Perhaps thinking of the object like a shape that does not want to change (stiff/no flex) but still conductive. if you connect the compressed side with the uncompressed side, the fact that the material is conductive makes it so that a circuit is formed and the electron density tries to balance out. I'm only just discovering this stuff but that makes sense to me.
If there is no movement and the electrons are already balanced out again (ignoring resistance of circuit) then there can be no current because all materials in the circuit are balanced actually, even if you are still deforming the objects shape. Potential energy is still held in the crystal though because of its stiffness(elasticity?).
I subscribed:) and best explanation about converting sound to emf ,soo now I'm trying to find a way to transfer energy from one place (sound waves) to ring candies in the box (emf) to get energy produced on long distance? :)
When deformation takes place as the crystal moves closer to the vertical line how does positive charge build up on top?
I don't know. My guess is the combination of each molecule builds up a small voltage which propagates due to vibration.
Thank you so much for this!
Do you still reply?
I am wondering how the crystal converts AC to Sound and visa versa? And why it does not to replicate what is introduced, (why does it not produce AC current when an AC current is introduced?)
Thank you
can you help me to finding anything that connects me to the original RAIF technology. disease (metastatic cancer)
Could you (theoretically) use something like a ddr mat out of tiles, that use this effect to make electricity, and put that into a back up generator?
Cool idea, made any progress on it? haha
what would happen if I would keep a crystal of quartz under a constant mechanical load along the force axis? Would the voltage vanish after a milisecond moment or would it remain??
+anubhab kundu in theory a potential difference would remain but it would be DC only. Although not an transducer expert, a DC output would be problematic in trying to amplify the signal.
High School Physics Explained thank you for replacing electrochemical batteries!!.....I think now all vehicles can be driven by DC piezoelectricity which never requires a juice-up.
+anubhab kundu I don't think a current will flow just because there is a potential difference. Besides, no more energy input via pushing would mean no energy output due to LCE
High School Physics Explained what is LCE? and why would a current not flow even though a pd is there
High School Physics Explained and one more thing....have you ever tried sitting on piezo array to note down the output voltage?
Piezoelectric circuit can it be destroyed by emp jammer?
Can You please explain the production of Ultrasonic wave which the use of piezo electric effect
+Asfar Fathima ???
That's what the video is supposed to do.
at my university they taught me with circuit diagram which i didnt understand so i wanted that please :)
What would happen if we start applying strong magnetic fields to the controlled direction
Beautiful...
Very basic , but very good description of whats happening well done . But as with all good descriptions of whats happening it failed to explain what was happening. . I find our modern education system is very good at descriptions of whats happening without ever explaing why .
That is intentional. The video originally is intended to cover the NSW physics syllabus and is high School oriented. To go deeper, explaining why it occurs would actually complicate things for students. Nonetheless a follow up video would be a good idea.
can you explain the rheostat please
Are you referring to a simple variable resistor, or more?
YES A SIMPLE VARIABLE RESISTOR
Bruzz…
Use SBS's subtitle style (yellow text, black outline) when superimposing texts. Great video tho. Just what I was looking for.
Didn’t know it was SBS style. One of the presets in adobe premiere
SBS' (The broadcaster) subs always appear in yellow fill, black stroke. A practice that pre-dates Premier text presets and possibly the invention of non-linear digital editing software.
i didn't understood how this can be applied to uv scanning??how the uv waves are able to that produce a video?? it would be helpful if u explain that.
+ses chaitanya I don't know what you mean
I think she /he means how the waveform is converted to an image . I believe that is signal processing ( analog to digital conversion particularly )