🚨Correction! A paper about this exact mechanism has been shared with me: transducer-research-foundation.org/technical_digests/HiltonHead_2010/hh2010_0061.pdf The X/Y gyros had two plausible explanations, and I picked the wrong one 🤦‍♀ The general principles hold, but the drive and sense directions are flipped in the X/Y gyros. I.e. the drive direction is up/down, and sense is left/right in-plane. 🚨Correction! At 6:00 I misattributed some of forces involved. @StadtlerHM sent me this correction in private, but I thought it warranted being pinned so more folks could read it! > "So when you drop your device and there is a downwards acceleration, the frame of the mems device will move down, and because the [proof mass] is decoupled from the rest of [the frame], it will attempt to stay where it is by moving upwards." This is true for how the phone detects acceleration to the phone by any force that acts on the frame, but not the proof mass. Gravity however acts just as much on the frame as it does on the proof mass, and as such there will be no difference in acceleration from gravity between the frame and proof mass. An accelerometer therefore can not detect acceleration from gravity when accelerating when in freefall. Instead, when the phone is stationary, the proof mass will hang low, being pulled down by gravity, with the flexion joint pulling it upwards to keep it stationary. When the phone is dropped, the spring force remains, but the gravitational force now acts equally on the frame and proof mass, causing the accelerometer to detect no apparent acceleration from gravity. Because the spring force is pulling the proof mass upwards, it will be pushed upwards relative to the frame, causing it to appear to stay stationary, and "lag" behind the frame in the fall. In short, the reason the proof mass stays stationary is due to the force from the flexion joint, not because of inertia causing it to "move up". Both the phone frame and proof mass have inertia, and both are affected just as much by gravity. The spring force on the proof mass acts as a spring that's bent and released, accelerating it upwards and starting to oscillate. This is why your test shows the proof mass "lagging" behind the frame when first dropped, then subsequently starting to oscillate. Thanks @StadtlerHM!

@MordecaiV

Жыл бұрын

Thanks for pinning this, it was really bothering me! Plus, you can actually see the z axis gravity in your print! At rest, the proof masses are sagging down, because they are being accelerated by gravity!

@BreakingTaps

Жыл бұрын

​@@MordecaiV Yeah, I blame the gyroscopes for this big goof on my part 😅The gyros don't work quite like a "textbook" gyro, so I spent a lot of time and energy figuring out how they operated, and mostly ignored the accelerometers since they were simple and I knew the basics already. Should have spent more time vetting that part of the video since whoops, flubbed the explanation 🙃 Also funny because prior to filming, I had to twist the gyros a bit to get them more level... the plastic had deformed and creeped due to gravity and sitting around. Foreshadowing haha!

@triffid0hunter

Жыл бұрын

This seems like a really complicated way to say that "being stationary relative to Earth's surface is mathematically equivalent (regardless of sensor type) to constantly accelerating _upwards_ at 1G, and if the phone is dropped then the acceleration changes to 0 in all 3 axes since it's now following an inertial geodesic - ie a straight line in curved spacetime" :P

@Jehty21

Жыл бұрын

Thank you both for this correction. I was really struggling to fit your explanation in this video with my understanding of physics. 👍

@graealex

Жыл бұрын

My first thought when you showed the phone being dropped - because that's basically the only time none of linear sensors are detecting any forces at all. It's also an important property, because that's how the phone knows where "down" is, without the inherent drift of gyroscopes.

Wow Zach, this is the next level in explainer videos. Absolutely fantastic! I think that making the models that you can actually take apart and interact with added a lot of educational value!

@BreakingTaps

Жыл бұрын

Thanks Jeroen! Was a lot of fun (and work!) to assemble this one. Definitely glad I went through with tracing and printing the devices, there were a few sections that moved in a manner that I didn't expect just from looking at the 2D image. The gyros in particular were a bit unexpected

@ThomasBoelskifte

Жыл бұрын

Yes, it was absolutely incredible Zach, thank you so much ❤

@HerrSalat

Жыл бұрын

teachers and professors should use those prints for explanation!

@natywubet2175

Жыл бұрын

Hey huygens optics. I really really love your channel and your way of teaching, your way of seeing at things and approaching problems. Really helped me to step up my learning ability also had a lot to learn from you so thank you from the bottom of my heart

@SHAFIulBARI

Жыл бұрын

I agree, this is absolutely brilliant

Men will literally 3D print life sized MEMS devices instead of going to therapy

@pyropulseIXXI

13 күн бұрын

Life sized? Lmao

@ryanreedgibson

9 күн бұрын

What's therapy?

@fanofthemika

6 күн бұрын

How are these things mutually exclusive?

The quality here cannot be understated. I was already impressed just with the diagram, and then to make a *working* 3D print AND test and graph it just blew me away. A truly new standard of explanation.

@BreakingTaps

Жыл бұрын

Thanks! 🥰

@JaredBrewerAerospace

8 ай бұрын

This is the definition of high quality content. I work on MEMS devices used in satellites and space probes that detect accelerations in microgravity. We have some extra complications when you are working without earth's gravity to exaggerate these movements by 5-6 orders of magnitude. They are known as zero-force accelerometers and we have to read shifts in ionization energy driven by movements in a localized reference frame. Still seeing this demonstrated in the way that he does is eye opening for me. It is pure, simple, effective and elegant. He is dead-on and I applaud his execution. Instant sub from me, I look forward to more.

Don't think for a minute that your subscribers aren't fully aware of just how much time and effort and work you're willing to put into a single episode. There aren't many KZread content providers that are willing to put the work into a single episode as you are so I just wanted to say thanks, it's impressive and much appreciated. You deserve far more subscribers than you currently have and I believe that if you continue to produce episodes of this quality, your subscriber numbers will grow pretty quickly. Thanks again.

@sbalogh53

Жыл бұрын

I really cannot understand why there are a few hundred down votes in this video. What is there to not like about it?

@HAL-zh1kf

Жыл бұрын

This was the first thing I was aware of. To construct a 3D-printed model of a microlithographic circuit is beyond comprehension.

@GospodinJean

Жыл бұрын

U was thinking the same

@GuardianTiger

11 ай бұрын

Not subscribers... VIEWS. That's how you get money which helps him more but subscribers are great too

@JasonAStillman

10 ай бұрын

The work is exactly why I just subscribed. ;)

This is the best MEMs accel/gyro video I've seen

MEMS devices are amazing. I don't think people realise how many applications they have - from printers and projectors, to accelerometers and barometers. That's just a few possible applications. Also, Bambu Lab crew!

@BreakingTaps

Жыл бұрын

That printer is like a cheat code! Works so well, can't imagine printing these things up without it!

@graealex

Жыл бұрын

The important application are actually cars, in particular the Airbag Control Unit. That was the initial driver for MEMS development.

@vaheakli4551

Жыл бұрын

there is a microspectrometr made out of mems, thats hilarious

@oliverer3

Жыл бұрын

​@@BreakingTaps Speaking of printers and MEMS... piezoelectric inkjet printheads are mems devices that look pretty cool under a microscope if you're ever bored. (Just be smarter than me and realize that if you want look at a think while it's shooting in everywhere maybe covering things up a bit...)

@TheCoffeeSquirel

Жыл бұрын

I tried a MEMS with a magnetometer to use as a compass for a observatory dome, but failed as the dome and high altitudes made southern headings not readable. Might revisit sometime later though :D

I am completely blown away by the quality of this episode (my first) and the fantastic models you made to illustrate something that has mystified me for many years. All my web searches over the years never turned up an explanation/demonstration that could help me understand how these devices work. Thanks so much for all the time and thought you obviously put into it. If there is an award for work like this it’s hard to imagine a more deserving creator.

This is totally fascinating! YES, the big models did help in showing how the mechanisms work. And the thing is, while in theory this is not that complicated - making all those 'tiny' sized components to detect all of this - I'm just blown away. Thank you!

silicon is extremely flexible when it is thinned. i once had a wafer that was overetched (to the point equipment could no longer handle the sharp edges). I suspect it was 40 microns thick(they start around 800 microns thick), but didn't get a measurement. It was 8" diameter wafer and was able to grab it and fold it in half so it was touching itself like a taco. it just flexed back to flat after. its hard to believe a single crystal could be so flexible but it also does teach a lesson about how stress works.

@advorak8529

Жыл бұрын

Chemistry class. Working with glass and Bunsen burners, as often enough you need to change your glass containers for special purposes. For fun I drew out a glas rod as long as I could and ended up with a rather springy, long, thin ‘hair’ of a tail … glass is not flexing? Just make it thin enough!

@The.Heart.Unceasing

Жыл бұрын

@@advorak8529 I mean, how do you think fiber optic cables works ?

@advorak8529

Жыл бұрын

@@The.Heart.Unceasing Total internal reflection? Pretty sure that how it works. Well, not really, there are photonic crystal fibres ...

@The.Heart.Unceasing

Жыл бұрын

@@advorak8529 nah I meant the bendyness of the glass fibers inside ^^

@codysergeant1486

Жыл бұрын

🤓

Modeling and printing the MEMS devices was absolutely brilliant and elevated this video to top tier. Well done, it was definitely worth the time spent making it in my opinion.

Increbile how such a small mechanism can be integrated in a ridiculously small chip giving precise result and with such a low cost! Absolutely brilliant video. Thank you for sharing! 😁

Okay, I have to say, I knew how MEMS devices work and accelerometers and gyroscopes and stuff. I've even seen the pictures of the internal structure. That being said.. Your level of detail and visualization is freakin AWESOME. Amazing job with every bit of this.

@CallistoPili

8 ай бұрын

Yeah, pretty awesome the 3d printer parts, I tried as well times ago with bad luck becuse the fine details, then he said "one week" printing and I understood.

The amount of work you put into recreating and printing those is really appreciated it looks amazing

I'm an elementary STEM Lab teacher and I love your use of larger 3D printed models to explain how the accelerometers and gyroscopes work. Brilliant idea! And your explanation is equally easy to follow. Well done!!!

Absolutely excellent job explaining MEMS. You went to a lot of work building those models, worth the effort in my opinion.

It's absolutely crazy to think we have sensors that are able to detect such small forces.

Outstanding! Many in the comments are pointing out "corrections" The fact that you modeled this so beautifully that understanding it is INTUITIVE for most everyone, and to the point where we can critique your every word with that deep understanding is... amazing. You can see it flexing and moving and it just makes sense. Wow.

Your physical models are incredibly helpful to understand what the devices are doing. I had no idea that a tuning fork can be the main part of a gyroscope. That is a huge advantage over the spinning wheels method for making it microscopic.

around 4:35, not just that they can do it, but how good they r at it, im still consistently blown away at how accurate n repeatable parts r

Making a blow-up of the MEMS is a boss move! Thanks for putting so much effort in this awesome video

I just found this channel and WOW! The fact that you made physical models to explain these complex concepts and devices Absolutely amazing You are a true engineer and extremely effective teacher!

The quality of this video is incredible. I'm continually amazed by the level of education one can find for free on KZread. Thank you sir

Your generosity in sharing knowledge with complete strangers, for the love of science and learning, is what science in its purest form has always been about. Many thanks.

serious props for manually tracing out those mems, really helps seeing how they function with a model that can move instead of just still images

You seem to go above and beyond to help us understand things. I only recently came across your channel. I think KZread recommended one of your shorts. I watched it and then went flicking through your catalog of videos. It’s some reason good educational content and I love learning. Thanks 😊👍

@BreakingTaps

Жыл бұрын

Thanks for watching! ♥

This is an insane physical model! Thank you for taking the time to create it and explain it to us all

Not sure if you have ever been a teacher, but the way you explain concepts (along with the amazing visual aids) make the information really digestible. Subbed, love the work you do !

I've always wondered how this actually works on the microscopic level. No better person to learn from. Really appreciate your work and the calmly-grounded-yet-awe-inspiring way you present it. It's clear in each of your videos that untold hours of curiosity, experimentation, frustration, eurekas + filming and editing are behind the final product, so thank you for all you do. 👍

It's hard to find very clear explanations on these devices, with real photos, and real models, and even test to explain very clearly a concept behind a device. Thanks man

I stumbled on this video while just looking for something to watch, and it caught my attention. I wasn't searching to learn about any of this but ended up learning far more than I expected to. I'm blown away by the work put into the 3D models and the easy to understand way it was all put. Amazing video!

would love to see a DLP (projector) MEMS

I'm not sure if you've done a video on one of the OG popular MEMS devices (DLP chips or inkjet printer nozzles) but they'd be neat to see and are structurally quite simple to understand. I'd also love to see more insight and models with some of the tiny motors and microfluidics devices they make using MEMS technology, although I know such devices are much more niche and hence harder to get a hold of than something commodity like an accelerometer/gyroscope. I know they also make MEMS microphones these days, so seeing how those are built and comparing them to the previous go-to for compact microphones (electret capsules) would be fascinating. They can also apparently make compasses (do they use an electromagnet? tiny permanent magnet?) and humidity sensors (what part of this is responding to humidity?) in MEMS, and I can't imagine how they're pulling that off so those might be neat to investigate as well.

@lorem9587

Жыл бұрын

I second compasses and humidity sensors!

@erlendse

Жыл бұрын

Compasses use HAL-sensors and how the current bends in a metal sheet when exposed to a field. Not that much to see I guess? not actually a MEMS device. Microphones is likely just the acclerator connected to a membrane instead of a mass (aka not that much new?). Humidity sensors seems to use the conductivity of material vs wetness or a capacitor where the dieletric gets wet(hydroscopic) from the air. Likely not really MEMS, probably just a blob of special material on two metal conductors?

Hi Zack, I really am blown away with your approach, equipment, testing and explanations. And of course the crazy amount of time spent in tracing. I am glad that Gen had you tell me about your channel! Really fantastic! I passed on a link to your channel to a number of people.... Great work!

That's really cool. I greatly appreciate your style of informing/teaching Zach. Thank you for your & everyone behind the scenes hard work bringing us the content. I look forward to the next notification from your channel 👍

Really appreciate the effort you put in to create those 3D prints! I've watched a few videos about these sorts of devices, and there's always a bit of handwaving about how they actually work. This was an amazing physical demo, I feel like I have a visceral understanding of how they work now.

Amazed at the work you've put into this. The gyroscope part was surprising .. literally had no idea that this was also a flexture and your explanation as to how it worked was excellent. So much high technology in phones.. incredible.

I'm less than halfway through, but this is so insanely interesting, and you put in so much careful work that I just have to subscribe right now. Insane video man, thank you for doing all that and sharing it with us!!!

One of the best explanations I've ever heard of how a MEMS gyro/accel works. I had heard theoretical explanations of how they work, but nobody else actually made a physical model.

Beautiful explanations, and beautiful models you 3d printed of these tiny mechanisms. I always casually thought about how these phones pick up on motion, position, etc. and guessed there had to be some moving parts somewhere, but never imagined how brilliantly ingenious and sophisticated the designs really were.

Having presented the accelerometer/gyroscope to my students last week, I actually had the idea if I could not make some simplified 3D-model. Now I linked your video in our course material and I will have a look at your 3D files later.

My guy, this was one of the best explanations of computer stuff for a non computer person ever. Kudos.

This is my first time in this channel. I am in awe about the attention to detail, what people can do with just a 3D printer. You got a admirer today.

Your video quality is beyond amazing. Super informative and helpful. As with a lot of technology i simply do not have time to read lots and lots on them, so videos like these provide months of research in 20 minutes or less, which is amazing. I do however need to ask, gravity is not a force, when you drop your phone, the ground is accelerating upwards and the phone will feel no gravity, according to GR. Therefore, does the phone have a range of pre set parameters for earths gravity, so it can detect the lack of acceleration?

@BreakingTaps

Жыл бұрын

Thanks! 🥰 And yeah, I botched the explanation on that... check the pinned comment, a viewer explained how it actually works vs. what I said :) Tl;dr: it's actually the restoring force of the flexure that's detected (acting like a spring), unlike what i said

Always excited to see a new Breaking Taps video!

The macro scale models are *really* cool! Also, REALLY clever engineering! Never knew how accelerometers worked before. Ingenious! For me, It'd be really interesting to see a similar sort of model of how the touch sensitive displays work. Especially how to detect the proximity of a stylus without it actually touching the device.

I'm mind blown at how well you explained all the mechanisms, even for a non-science student like myself to understand! Thank you so much, I hope you know we dearly appreciate all of your hard work!!

wowow what a wonderful demonstration. These are such cool and clever devices, and you nailed it. And huge props for taking apart real mems devices and sketching them into 3d prints! Thanks again!

Simply THE BEST explanation ever created!!! Seriously worthy of becoming most recommended / most linked to video on any platform. Thank you 🙏🏼 for ALL your time && effort!!!

As hard as it still was to grasp the rought functionality of those devices. We can see it in completion. Makes you appreciate the sheer genius of the people who invented it and made it so unbelievable small.

Sometimes I imagine a video like this being sent 50 years in the past. Scientists analyzing every word, every frame. Putting together a list of new ideas, things that still need to be discovered, while maybe being completely oblivious to the fact that the video was created by regular person and shared for free.

This was a *phenomenal* video! I can imagine how tedious it must have been to trace all the elements, then convert them into a 3D model that could be printed 😮👍 That added SO much to the understanding, though, making for a really extraordinary explainer video. I found it especially interesting how they can integrate the Z axis into that same planar structure - I’d always wondered how they managed to do 3 axes, and thought there must be a second chip at right angles inside the package. This was also the first time I understood how they manage to translate the coriolis forces into a measurable signal. The shift in resonant frequency was entirely unexpected. A number of years ago I was looking at an application for a gyro where I needed a lot of sensitivity to small movements. Analog Devices (now part of someone larger, I think TI) had a unit that was an order of magnitude more sensitive than the standard parts. An engineer there explained that it operated on a somewhat different principle, but didn’t explain what that was. It’s be interesting to find out what that was :-) BTW, the killer app that made these jellybean parts was car airbags. They needed ultra-reliable inexpensive accelerometers, and the millions of units requirement drove the development of MEMS accelerometers. Gyros came later, once the basic tech had been perfected for the airbag market. Btw, what’s the purpose of the chip bonded on top? Just protection?

@TheMrTape

Жыл бұрын

The chip on top is the ASIC for the sensor, stacked to keep it small. kzread.info/dash/bejne/nmtpq8uHhrXKlso.html at 1:15

Wonderful video. I would love to see a part II of how MEMS are made, in particular the undercuts, using photolithography.

@TheMrTape

Жыл бұрын

Here's one that explains it well kzread.info/dash/bejne/m4R70tGOfpWfqs4.html It's basically just suspended on material they etch away after construction.

INSTANTLY pressed like & subscribe once it started playing how you modeled and 3D-printed the MEMs. Been watching a couple of your other videos too and they are absolutely incredible and informative!

The best tech video I've seen in a good while. I don't even wanna think about how many hours are needed in CAD for the models. Great job!

This is absolutely beautiful. What a wonderful explanation! THANK YOU for gifting us all with this easy to access knowledge. It was, undoubtedly A LOT of work!

Awesome subject well explained ! It would be nice to see some early MEMS side by side with the best we have today and perhaps a glimpse into how they are made....cheers.

@BreakingTaps

Жыл бұрын

Ooh, that's a good idea! Would love to see if the fabrication processes are noticeably different (either in fidelity or quality, sidewalls, etc) or just complexity.

This video is completely amazing. I always wondered how they accomplished the seemingly magical task of fitting a gyroscope into a 2mm wafer. It borders on miraculous. Thank you so much for taking the time to explain these remarkable devices to us. It's really mind-blowing that these things work the way we do, and your explanation was equally mind-blowing. Again, thank you.

Wow, thanks for not only the explanation but all the VERY-HARD-WORK to make the 3D-print models. Very much appreciate your intellect and effort!

Love these videos! Can definitely tell you're passionate about what you do

This is an incredible presentation and explanation! Top 10 channels in my sub list and that's pretty big. I wonder if there are any MEMS devices which work in a piezo-electric way, where the flexure of the material produces a voltage and that is then converted to movements, vs this capacitance method.

@BreakingTaps

Жыл бұрын

Oh yeah, definitely! The cantilever on my AFM is a MEMS device, and I think they detect the oscillations via a piezo element embedded in the cantilever base. I think it's less common since it's a much more difficult process for fabs, needing to deposit a piezo material compared to just another metal layer and traces. But adds a huge amount of flexibility since you can put strain sensors right where you want them. Very cool stuff!

@larrybud

Жыл бұрын

@@BreakingTaps I think it would be worthy a video on how you decapped these. I know you briefly went over it, but I'd love to see the actual process. How many did you have to do this to to create your composite?

I think I may have just watched the best video I have ever seen on KZread!!! I feel that I can say that with 100% sincerity as well! This was just astounding work. I was half a second behind you when you said "what if I drew" it and then boom, 3d models and prints. Just amazing work! I am off to binge everything you have to offer! Thanks for all the work on this video.

I just cannot believe we can make things like this that work so well and reliably for under a dollar. My jaw was on the floor this entire video

AS a 3D artist my I was Blown away by the Microscopic Art. Years ago they said it's impossible to see what's inside a MEMS device to which I was sad until Now. I was actually about to start modeling it from scratch using the images but Glad that you provided the 3D models. I would love to make a 3D explainer video if you want me to make one. Let me know thanks sir.

This was extremely cool! Even though I had a basic grasp of how MEMS devices work, it was very insightful to see the 3D printed models and see the flexures bend. I love presentations that allow me to have a more intuitive understanding of various concepts, and this was definitely one of them. However, I didn't quite get how the change in oscillation in the gyros propagates to the measuring capacitors on the outside. Also, it would be great to see how the movements of the rest of the mechanisms are sensed. As for suggestions, a few years ago there was an interesting case of a MEMS resonator clocking an iPhone SoC that failed to operate when submerged in helium. DLP chips could be interesting to explore as well. I'm also curious how these devices are manufactured, but I'm not sure if this is within the scope of this channel. Thanks a lot for the video!

@erlendse

Жыл бұрын

They are esencially a mechanical integrated circuit, very cool stuff! And I would like to know how that spesific sensing works too, for me it seems like something may be wrong about the presentation. The controller clearly know the driven phase, and could totally use the phase of the sensed signal and compare aginst the driven signal so plenty tricks. From what I understand about the helium, it's not submerging but rather a small presence of it that messes it up. How they are made have lots of secrets. From my experience they are totally willing to show what it's shaped like and all, but how they build it is off limits.

Wow, I'm so happy to have been suggested this video!!! That is a mind blowing amount of work you put in to scan, take apart, trace and recreate the chip as a model. But it made for a great visual explanation, and I understand these devices so much more than I ever thought I would. They're both much more complex (in the intricate manufacturing) and more simple (basically just swiveling pieces) than I expected

Thanks so much for this video. As a mechanical engineer with a focus on materials science who works as a software engineer and whose dad is an electical engineer, MEMS devices are like the ultimate combination of my interests. This is such valuable information presented so clearly and simply

When you drop your device, the sensor will detect that the acceleration upwards has stopped. It doesn’t detect an acceleration downwards. It becomes weightless, not sensing any acceleration. Until it hits the floor of course.

Great video! Looking forward to see another MEMS device such as Microphone or Oscillator.

@ZomB1986

Жыл бұрын

I made microscope images of a MEMS microphone from what I think was a Motorola Razr. The photos are orange because the lamp is just yellow. imgur pPHXCev

its so nice that you are totally crazy and you actually did all of this 🙂 keep them coming. best wishes

Your 3D models are such a great tool to help understand what is going on. You have great methods to conveying how things work. I had no idea that these devices had any movable parts at all. Very eye opening for me.

Insanely detailed video and very interesting to watch! Glad it blew up. I know these videos take a lot of time and seem less worth to make compared to the new short video format that's getting popular but take your time, and keep it up!

Awesome! We use LIS3DH accelerometers in our 3D printers (RRF) and I know that Klipper uses the ADXL345. It might be nice to compare those two as they are both used for the same purpose by different firmwares. It would be interesting to kickstart a debate about which one is better ;)

@BreakingTaps

Жыл бұрын

Oh, yeah that's definitely on the todo list! I've looked at the LIS3DH in the past, and it's a _very_ different architecture. I mean, same general principles apply, but it looks entirely different from the MPU-6050 accelerometers. I was actually hoping to show some of the photos in this video, but ran out of time. A comparison of popular accelerometers is a great idea, would be neat to compare/contrast all of them

come here through recommendation of gareeb scientist

@sahilrohilla4283

8 ай бұрын

same here

Amazing video. I applaud and thank you for the time you spent printing everything and explaining everything. It’s crazy the thought and design that goes into MEMS and the level of precision they can achieve at such a small scale. Same with transistor technology, blows my mind.

A+ on the effort alone. Everything else is just gravy

Absolutely fantastic! This is an amazing real-world view of bacteria-small comonponentry that we all just take for granted. Until now I had assumed that there were just dizzy pixies in my phone working out which way is up. Now I know! Thank you for making this and for going to the trouble of tracing, mapping and recreating this MEMS device as a 3D model.

Amazing work. I wish all classes in engineering were like this. Models are important, but visually seeing it working on a scaled version and comparing it to the model is on another level.

Great video! When you showed the microscope images I didn't think I could understand how the mechanisms move, but your printed models helped a ton. Crazy that these devices work accurately.

This is one of the most interesting videos I have ever seen on KZread. It makes me wish I had studied electrical engineering in college. Thank you for putting so much time and effort into making this, wow!

This is an amazing description of how these devices work! It shows that that mechanical engineering is tightly integrated with the Electronics. It reminds me of how each imaging sensor in an aircraft must have it's own mems stabilization to compensate for vibration in an airframe with respect to the position of each sensor in an aircraft.

"Delicate" is an understatement on a scale, where "understatement" is an understatement... These things are, to me at least, incomprehensible small. If I'm not mixing up the scales here, then some parts could be the size of fingernail width next to a tree trunk, where the tree trunk is a human hair... It's just insane. And fascinating how "normal" technology made it that these things are everywhere because they can be made THAT easily these days. Also a "Thank you

I'm blown away at the effort just as much as the detail and lay-translation! Mega kudos! I'd like to know how in the heck the designs were originally engineered, tuned, and optimized. That history would make a great subject. I just watched a video about the origin of BASIC and the man behind it using a gang of undergrads. I have a sweet-tooth for the deep dives. Micro accelerometers and gyros would be a good deep history dive. I once thought of applying those to an original powered sub-woofer design.

The models you created are incredible. And I wouldn’t have understood the mechanism without them. Thank you for putting in so much work and sharing your understanding.

Fascinating stuff, it takes a brilliant guy to understand the mechanism and made models to explain it. Imagine how smart those guys invented and made those instruments? Those guys are the unknown hero of the progress of civilization and humanity.

I amazed at the kind of things people think up and invent. The level of Creativity and intelligence at that level really is amazing and should be appreciated. Thanks for all your effort. Reminds me of when i read the book how do it know that explains basically how computers work. A really simplified explanation of the core inner workings that anyone can understand without needing to know the complex theories and laws behind it

I used to build military UAVs. Never understood how solid state accelerometers worked in our avionics. The best explanation of solid state devices of have ever seen! 3d models over the top! Thanks man! Fantastic!

Can we just appreciate how far technology has come? People have been complaining about the lack of flying cars or the shortcomings of certain technologies, but the stage we are at now would be unbelievable for those living 20 or 30 years ago. Just imagine having a component in your phone that is as small as a bacteria, it's mind-blowing. And how is it even manufactured? I find this truly intriguing and amazing!

Holy smoke - You deserve an Oscar for this video. I am as literate in this field as a carpenter's one pound hammer and yet you explained this in such a way, with those superlative models, that I fully understood the process. Gee, if only other presenters of complicated subjects had your attention to detail, and (your investment in) presentation aids. I am stunned. Thank you so very much. I watch KZread for about 120 minutes a day and this 20 minute presentation is easily the best I have exerienced in several weeks. Top echelon work, without qualification. Good job. Sincerely appreciated.

I gotta say, this was very enjoyable to watch. Most integrated circuit videos I have watched were quite lacking in actual information. I have worked with integrated circuits since the late 70's and was always amazed at how complex they became over the years. In the 80's we worked with Motorola 68000 CPU chips and had quite a lot of failures shipped to us. We were able to crack the tops off and look inside to see the cip itself. The mark one eyeball is not powerful enough to view the chip on its own and so we used high magnification. Under microscopes, the complexity was astounding. This was way back in the 80s....Its hard to imagine the complexity of today's cpu's with billions of transistors. Well done, and I look forward to more of your videos.

Level of efforts put into this video is enormous! Makes those complicated subjects easy to understand. Thank you very much.

The visualizations from the microscopes, and your explanations are the best I've seen on KZread. Very informative! Thank you so much.

I am speechless! I watch a lot of KZread videos, seriously. Never seen this kind of piece. It's unique. So much effort in it. Thanks a lot.

Fantastic video! It made me wonder how is the design process for these sensors, how much modelling is involved and how much trial and error. Looking forward to seeing some other MEMS around.

I have searched in past about this exact thing but didnt found anything. Really appreciate your passion for going down the rabbit hole and figuring out how this works for rest of us.

Awesome job with the video! Even with the slight errors and simplifications, this was a refreshing watch. I design these kinds of inertial MEMS sensors for a living, and it's cool to see someone really explain the structure and operating principles of these fascinating devices to the lay audience. The printed models really helped there. Typical explanatory articles/videos only show some microscope/SEM pics and maybe explain there's a tiny moving mass and it's sensed capacitively. There's a lot more to it than that, as you presented well. Kudos! A scanning MEMS mirror for e.g. lidar applications could be a good visual example for a future video. They're simple but striking devices, and usually come in a housing that's clear in the visible light range (some are even available as bare dies), so there could be some cool footage to be had of them in operation.

Both these MEMS devices, and the production quality of this video is incredible. It would be nice to see a MEMS microphone under the SEM. Also a DMD chip from a DLP projector, a faulty one with stuck mirrors, to explore how and why this failure happens.

You gave me answers to questions I never thought of before and curious me was thinking "What the... how smart is this??" and you've done a very great job in explaining! Thank you so much!

This is insane that we as humans have designed something so small to work like it does on a microscopic scale. I am blown away with technological advances and creativity.

You should probably sell these models online, these 3d printed designs are worth having. Awesome work!