Electricity from Water Drops - Triboelectric Nanogenerator for Hydrovoltaic Power Harvesting
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- čas přidán 2. 07. 2024
- 0:00 - Intro
0:25 - Components
1:16 - Scientific explanation
1:38 - Materials
2:12 - Build tutorial
3:21 - Important testing info
4:03 - Oscilloscope tests
5:46 - Higher end oscilloscope
6:05 - Multimeter tests
7:01 - Applications (LED, watch, pipes)
Designed and filmed by Beatrice Jiang - Věda a technologie
nice one, keep up the good work. What happens if you add some capacitors?
It would average out the current more but it's not something that I've tried yet
Robert Murray Smith has made videos about it years ago
he has fewer cats though
tri bo electric
That's a fascinating bit of tech, I wonder if the particular reason it works is the polar nature of water, so that as it slides along the surface it can 'drag' the electrons.
Interesting that the saw/square wave pattern of the electrode has such an impact on the output, if I'm interpreting the graphs correctly the reason you didn't go for the strip variation even with the higher Vpp is because of the reduced Vmin?
I could only guess that's possibly due to the surface area of the electrode interacting with the water droplets, but even then I can't visualise *why* that makes such a difference.
Very cool implementation!
The water doesn't exactly "drag" the electrons; the positive and negative charges in the water are redistributed to either of the two sides depending on the charge affinity of the materials.
The saw shape of the electrode is really just a combination of the strip and square variations. Since the saw shape has more surface discontinuities, it has a more effective power output than both strip and square.
Nicely done. I was wondering if mists would create some electricity.
I tried it with a humidifier mist but it didn't work. There needs to be a discrete movement of the water drops hitting and leaving the board for it to generate electricity.
first time i see thumbnail, i thought it's was 10Ah li-polymer battery in water
I have built a similar set-up using aluminum and PTFE but I don’t get nearly as much Volts. Maybe 1 Volt at best. Do you have any pointers? Do you use tap water?
Yes I did use tap water.
In regards to your setup, there are a few things to look out for:
1. All the components need to have really tight contact with one another. Make sure that there are no air bubbles between the PTFE and aluminum.
2. Your measuring instruments might not be sensitive enough; I had an issue with an old multimeter that wasn't picking up anything but it was fine once I got a new one.
Thank you for your reply! I’m going to try to make a few more and use different equipment.
Nicely done! One question though, when you attached it to the multimeter, I was not seeing the 150 volts as the oscilloscope was reflecting. Was there a reason?
Im guessing the output being very short bursts of dc had the meter averaging the voltage. I would trust the scope more
Exactly what @QueernMental said
excuse me what in the actual. how is this legal
you could use a capacitor system to create a more even output? maybe? any idea how many watts you were dealing with?
i gonna try this omgash