My wife watched this with me. At the end, she just stared at me and said "No. Don't You Dare!"

@illinoisenergyprof6878

3 жыл бұрын

My wife said that to me back in March when I started this... Fortunately we had a second microwave!

@verborgenewahrheit1594

3 жыл бұрын

If a husband said that to his wife, it would be considered toxic masculinity and evil patriarchy

@puppetsock

3 жыл бұрын

Um... Metal clip on cloth mask into the microwave. With an arcing loop. Can you say "kitchen fire?" Knew you could. Also: Vaporized coat hanger! Don't breathe this! Also, you can quite safely sterilize N95 masks by leaving them in a sunny windowsill for a day. I have a box of 40 that I recycle, first-in first-out, little magic-marker entered number. If the mask is dry, room temperature, and in the sun, it is very likely sterile in just a few minutes.

@kirkkohnen5050

3 жыл бұрын

@Ordinary Sessel Because you're not going to ruin my microwave oven. Now, I'm a PhD in electrical engineering, and I understand that this is safe. I've also learned that it's unwise to piss off my wife.

@spaceghost8995

3 жыл бұрын

@@verborgenewahrheit1594 Who hurt you? lol

Without a doubt this is my favorite you tuber. I have learned so much from watching his videos , it is incredible. Thank you sir for all that you do.

@illinoisenergyprof6878

3 жыл бұрын

You are very welcome

@PoseidonDiver

3 жыл бұрын

go have a look at applied science

Never did I imagine that Jory Caron's "Is it a Good Idea to Microwave This?" show would have yielded such huge cultural value ten years later.

@SolarWebsite

3 жыл бұрын

Oh wow, that's been ages! I still vividly remember that episode where the airbag cracked the glass door, and where the aluminium foil (barely) protected their nuts. -edit- Here it is: kzread.info/dash/bejne/hJyeqqOJp5TXXbA.html 11 years ago, I'm getting old....

@MichaelTheRead

3 жыл бұрын

You beat me to it. I was going to make the comment and then I glanced down and saw this. You fucking beat me to it.

Truly the future is now. Amazing work

@illinoisenergyprof6878

3 жыл бұрын

Thank you!

"This content has not been tested in humans at this time" Love it.

What percentage of the time creating this was spent dealing with the lawyers?

@illinoisenergyprof6878

3 жыл бұрын

yeah.... you don't want to know....

@SeanTerisu

3 жыл бұрын

There's a reason about a third of the video is disclaimers

I knew something was wrong the minute I started watching this video, then I watched it in the mirror and it corrected everything,LOL.

Used to work at a company making plasma equipment and my bosses said 'what we are making are basically glorified microwave ovens'.

Truly sublime. Rarely indeed do I see videos combining such immense, radical practicality with a rigorous theoretical basis. Thank you, Dr. Ruzic, this was truly a gem.

I love how thorough you were catching every possible question or issue people would have - even to tell people not to inhale the fumes from the vent... because people would do it - thats just the whacky world we live in.

Not sure if it will go for 30 seconds, but if you split a grape and put it on a ceramic plate it will create a plasma as well. Very cool video Professor! Love your channel and your work!

I sent this link to various colleagues with technical backgrounds and they were mostly amused. I hope a reasonable multi-factorial designed experiment was used to determine whether plasma generation is needed at all. Reasons: 1. The 30% H2O2 will recondense on the surfaces at much higher concentrations. Evaporation of H2O2 into a low RH enclosure is a known commercial sterilization method. 2. Simply heating the mask is known to kill the virus. 3. In you video, the plasma generation seems to produce effects that could damage the microwave oven. 4. There are UV sterilizers that cost the same or less than the microwave oven and produce both UV and ozone. I recollect that around 23 mJ/cm2 is enough to kill the virus.

@Idontbelievethehype2

3 жыл бұрын

Yeah, but this was more fun to watch.

This could be used anywhere where there is a PPE shortage with common items that most people have on site.

@madmaxmedia

3 жыл бұрын

But how are they gonna make their popcorn?

My wife and my sister's boyfriend both work in a hospital setting, I will be showing them both this and hopefully this information can get passed around to help with the shortages.

I watched this video with the biggest Kool-aid grin; for years i have been testing the boundaries of what microwaves can do. The specific measurements, the shape, the other conditions necessary I was answering along to the prof as if i was front row center in class. There are few things as satisfying as finding out that you were right.

Brilliant! ...and I was just thinking of how to best restore an N-95 (actually my Chinese KN95) mask filters. Wonder what else I can do with a kitchen counter top _plasma-generator??_

Next week from Prof. Ruzic, how to turn your microwave into a Tokamak with a coathanger and pliers. I look forward to the legal disclaimer on that one.

@garymartin9777

3 жыл бұрын

Well if he doesn't achieve a tokamak perhaps he can produce a tomahawk.

The reflection of the assistant in an ill fitting mask below the nose is how you know this is serious business. Wish I had discovered the channel two years ago.

Amazing! Never thought a household hardware can produce such a thing! Thanks for this video!

Be sure to use only ceramic mugs that are "microwave safe". Some mugs have metal in the handles, which could ruin the mugs and possibly damage the magnetron in the microwave oven.

Great video. One of my best memories of growing up in Urbana was going to the open house on the engineering campus at U of Illinois.

You are doing some amazing videos. Pleas keep up the good job. I belive you would benefit from better image and sound quality. One idé is to start a patreon so we can support your work and after a while you will have all the hardwere you need to raise the quality of your videos. You have all the potentail for beeing a rising star on the you tube heaven! Thanks again for you work with sharing your insights with the world.

just love you videos , so much knowledge.

Well that's creative.

We're not allowed to have 30% hydrogen peroxide here in Europe, because it's deemed a precursor chemical for making explosives.

@illinoisenergyprof6878

3 жыл бұрын

We sell it in pool supply stores here in the US. Use the highest strength you have, and it will likely work. We are going to do experiments with lower concentrations soon.

@chuckvanderbildt

3 жыл бұрын

@@illinoisenergyprof6878 I looked it up, and the maximum legal concentration available to consumers in the EU is 12%. I will try it!

@thetraitor3852

3 жыл бұрын

I just found 35% in one shop. It either doesn't apply to whole EU or it isn't enforced everywhere.

@saltentity

3 жыл бұрын

I'm from Europe and its pretty easy to get 30% H2O2, even 33%. Try looking at stores that sell lab equipment and chemicals.

@illinoisenergyprof6878

3 жыл бұрын

I should mention that we did this over with the standard 3% hydrogen peroxide and it worked. A publication is under review that includes those resutls.

Haha, I could see me making an elaborate platform to keep the contents from rotating, and my wife taking a look and saying’try flipping the tray around.’

I really appreciate the good work that you and your team are doing with these experiments, but next time I would recommend putting the disclaimers and warnings at the start of the video rather than the end.

@hireahitCA

3 жыл бұрын

Daniel Soyka it is nearly as quick to skip them there...

This guy has good style

This is going to become a super spreader event for years to come

Instructions unclear, mask now covered with pizza

when the plasma hits the top of the microwave is the point it becomes hazardous to the machine. If you use a large Pyrex bowl inverted over your project it will keep the plasma contained and much safer.

Dude is a genius. Nuclear reactors, muons, photons, microwave ovens - what doesn't David know about ?!!?

How does the plasma effect the polarity of the fibers in the mask? I thought that was key to the mask being able to filter tiny particles and bio aerosols. Over time the polarity of the fibers diminishes and is the reason why old masks need to be replaced.

I would be a bit scared about concentrating a 1KW 1.2ghz oscillator in a 2mm gap, the power concentration would be huge, but of course you are right, microwave will survive if used for short period of times (magnetrons are strong suckers) wire will most likely disintegrated and like you said mugs will crack from the heat but yes the UV radiation in that levels will kill every bug in there, loved it, simple, done with common household things, excellent, thanks

Is there a cleaning procedure to restore the microwave to normal food cooking service or does it become a dedicated mask cleaning unit?

@illinoisenergyprof6878

3 жыл бұрын

If you have put contaminated material in your microwave, it is always best not to use it in the future for food. We have data which shows that the procedure kills viruses and spores. We have not looked to see if it kills bacteria.

@HoroRH

3 жыл бұрын

@@illinoisenergyprof6878 but the contamination of the masks is of the virus, so assuming the mask hasn't been exposed to other things potentially bacteria-ridden, this shouldn't lead to bacterial contamination of the oven. Lots of things already in the kitchen that we regularly put in a microwave oven already have bacterias, days-old chicken for example.

@jzdude01

2 жыл бұрын

@@HoroRH feel like this is missing the larger issue of the Hydrogen-peroxide vapor. There’s a reason he was handling everything with gloves. Maybe it has a much shorter lifespan than bacteria that idk abt, but I’d assume it’s the larger concern.

Dave. Thanks for sharing this very important work with the world. Where can we find the publication? Also, can you share the results of the control? How much of the disinfection is due to plasma and how much due to microwave? Meaning, if I were to run a microwave oven without the plasma modification (maybe for longer time than the 30 sec, or with/without water to create steam), how much viral load reduction can be expected? Thanks!

@illinoisenergyprof6878

3 жыл бұрын

The paper show the effects of various controls. It has been submitted to a journal, but a pre-print is available on MedRXiv. Here is the link: www.medrxiv.org/content/10.1101/2020.07.28.20163915v1

@danielyeh3338

3 жыл бұрын

@@illinoisenergyprof6878 Thank you for sharing the paper with the controls on microwave only and wicrowave +saline/H2O2. The data is complelling that only microwave + saline/h2O2 + plasma was able to achieve the ~99.99% reduction of virus on both sides of the mask.

What are the required specs on the wire material? Just conductivity? I think I might try to get this approved as an engineering project at my university so I can try several materials with perhaps higher melting points to increase longevity. I would send you the final report if I get approved.

Wow im going to build one myself, going to use silver alloy brazing rod & ceramic spacing insulators

@samsawesomeminecraft

3 жыл бұрын

if it's meant for brazing I'm afraid it'll be more likely to melt. I think iron is a good choice for this application.

Slightly harebrained but that's why we love you Dave. Only potential concern would be CuO fume deposition and inhalation. Not something I'd really worry about but you know how these medical types like to make mountains out of such molehills.

Thank you very much for the video! Would copper wire be useful as an antenna? It radiates/transmits heat very well. If not, would 3/32 copper coated welding rod or bare brass brazing wire work?

@illinoisenergyprof6878

3 жыл бұрын

copper works fine. We did it with aluminum, steel and copper. All worked. I would think Brass would too. (Sorry for not answering months ago)

@Farmer-bh3cg

3 жыл бұрын

@@illinoisenergyprof6878 Not to worry; thank you for the information. Now, if i may impose a bit further. The news tells me that the Gates person is going to set up a small nuclear reactor in Wyoming. Do you know if this is the same basic idea as your 80MW SMR that you did a video on a few weeks ago? Thanks again and hope you get back to posting more videos.- they're always interesting and informative.

10:20 regarding the glaze burning off the tile, that probably wouldn't be a problem if you put the tile in upside down and used the uncoated rough back side. It is probably thick enough that the glaze won't cook off laying face down. and bathed in liquid.

@illinoisenergyprof6878

3 жыл бұрын

good idea

Was that 3D printed holder printed using PLA or ABS? I'm shocked the heat from the plasma did not melt it if its PLA. I don't think my printer will run ABS. It's not enclosed. Wish I knew about this when Rona started. I ended up building a UVC box for my respirator filters. I'd put half a dozen in upside down for 15 min then flip and another 15 min.

Don't look directly at the arc through the door. Wear UV-A/UV-B or welder's goggles, or indirectly look at it using a camera/LCD. Glass absorbs UV-B but not much UV-A. If it's a cheap model of microwave there may not be any glass in the door, just transparent plastic, and you are blasting your eyes with damaging UV rays.

@illinoisenergyprof6878

3 жыл бұрын

We have measured the spectra given off by the plasma. There is not enough UV to worry about.

WOW!

I read the virus dies above 70 C. What about “baking” it on a regular oven at 75C? Does it kill the virus/germs without damaging the mask? Does it also kill whatever germs might be propagating on the moisture accumulated on the mask? I personally already damaged a MW and don’t fancy the idea of plasma hitting the inside walls (as it’s shown at the end) Thank you!

@LaserFur

3 жыл бұрын

70C at 50% humidity for 1 hour will kill the virus. A week at 50% humidity will also reduce the percentage down near zero.

@illinoisenergyprof6878

3 жыл бұрын

When we did a control experiment, of just using 30 seconds of microwave, it did not kill the virus. After our procedure we tested both the filtration ability and the fit. Both passed those tests even after 3 cycles.

Prof needs a new channel: Cooking with Plasma

Are the typical n95 masks flame proof? Isn't it possible to start a fire in the microwave using this method? Like if the mask falls into the plasma?

@illinoisenergyprof6878

3 жыл бұрын

A plasma does not necessarily catch anything on fire. The electrons are hot, and not the gas. Still though, if you hang the mask not right over the plasma, you will have no problems at all.

@igmothemagus

3 жыл бұрын

@@illinoisenergyprof6878 Thank you Professor. It just seemed off that you addressed all of the other potential issues, except the potential of fire (if it exists). I suppose I don't understand enough about the plasma itself. Do you have any recommendations of anything I might want to read or watch?

Is creating plasma in the microwave covered in the warranty? And I'm not sure how good it is for your eyes to stare at a strong UV source.

Can one build a ozone generator? For the basement...

Does it need to be exactly 30% hydrogen peroxide? Hydrogen Peroxide degrades, refrigeration slows it but theres no stopping it. what if its 50%? What if it was 50% or 30% but is 2 months old? Also im not too familiar with h2o2. even though once the procedure is done and the viral load on the mask is reduced and the fit and filtration is unaffected, is there any kind of h2o2 residue left on the mask that could be harmful to breathe in? And is there any residue left in the microwave?

@illinoisenergyprof6878

3 жыл бұрын

We are going to do a study next with the h2o2 level, and see what is required. We use very little, so I would guess that a little more of a lower concentration would work. I terms of residue, we have detected nothing on the masks. On the coffee cup, there could be some condensed vapor, so I would wear gloves when taking them out and then rinse them off.

Great idea. Is it plasma decontaminating it, or hydrogen peroxide vapour?

@illinoisenergyprof6878

3 жыл бұрын

The vapor alone does not do it. We need the radicals.

- The strong peroxide is probably rapidly breaking down and is used to form ozone (O3) in the arc. If peroxide is not used, then instead the 78% nitrogen gas in air breaks down to make nitrogen oxides. Lower concentration peroxide will produce ozone more slowly. - Microwave ovens have a fan to cool the magnetron and push steam out of the oven cavity. If you only have weak peroxide, the fan may be pushing it out of the oven cavity faster than it can be produced so the gas concentration stays too low to be useful. - You could try blocking the fan intake/exhaust vents so that the ozone will not be blown out of the oven as it is produced. But the magnetron and transformer/inverter will overheat if it is run too long with the cooling fan blocked. A duty cycle of probably 1 minute on, 10 minutes off would give the magnetron time to cool without the fan. - Probably won't be too harmful to block the air vents. Fan motors do eventually stop working in 20+ year old microwave ovens and they have to be designed to handle that. The magnetron "should" have a thermal sensor to keep it from melting or starting a fire with the fan vents blocked. - The big downside is that if it has a thermal safety fuse rather than a resetting thermostatic switch, then if the magnetron gets too hot even once, the fuse pops and it never runs again. Coffee machines and steam irons have thermal safety fuses to keep them from burning down a house if their main thermostat malfunctions. - But I don't know the standards for microwave safe design, so I would do this experimenting outside with a fire extinguisher nearby. (CYA lol)

Thank you. Can the masks be anywhere in the microwave or do they have to be right in the middle of the glow?

@illinoisenergyprof6878

3 жыл бұрын

pretty much anywhere -- but closer is better

I did this to a grape. I halved it but kept a 'bridge' of the grape's skin. After a few seconds it arcs. I'm not sure if it was a plasma but it definitely smelled 'ozoney'

Str8 up genius

Any issue with destroying the microwave.

This reminds me of that scene from UHF.

what is the recommended wattage of the microwave output?

@illinoisenergyprof6878

3 жыл бұрын

1000 W will do just fine. My guess is that any size will work. It is usually energy-density. So even a lower wattage one will work because it has a smaller volume.

@AndrewMerts

3 жыл бұрын

​@@illinoisenergyprof6878 A microwave oven is a resonant cavity, so increasing the size of the cavity won't lower the power density as it's still dumping the majority of the input RF into the contents of the oven. Also, I think it was an oversight to not emphasize the risk of a fire if some moron decides to place the mask directly above the plasma and has a self sustaining ball come up and into contact with the mask.

Why don't you make the the plasma using a match and a beaker? its a very simple yet effective method

What are the odds when doing this would destroy your microwave ovens?

MacGyver would be proud.

Fabulous video, can’t wait for all the Karens to start chiming in.

Won't it blow out the magnetron after awhile?

I got suspicious the second I saw the black gloves! haha! I know it's for safety in his experiment, it just looks funny.

* Faith in academia restored * :)

How do you turn a duck into a really good soul singer? Stick it in the microwave till its bill withers. no? I'll get me coat...

You should do a parody of the My Pillow commercial called My Plasma😈

What about the metal nose piece ?

Would an UV light bulb in a closed environment also kill most virusses on the surface by creating ozon?

@garymartin9777

3 жыл бұрын

Of the right wavelength, yes. Airlines are now using it to quickly sanitize cabins.

Would 12% peroxide work? It is harder to get anything stronger than that here

@illinoisenergyprof6878

3 жыл бұрын

We haven't tested this yet, but plan to do so. If you use 2 to 3 tsps (2 to 3 ml) instead of 1 you would have as much of the molecules as we did. It may take a little longer for the plasma to strike, but it should have the same effect. No guarantees of course.

part 2: how to add a toaster to build a stargate.

What about x-ray emissions from the plasma? Is that a concern in this case?

@illinoisenergyprof6878

3 жыл бұрын

No. The plasma is way way to low in energy to emit x-rays. It is not a star.....

@MarkRose1337

3 жыл бұрын

@@illinoisenergyprof6878 Thanks! I'm not too familiar with plasma :-)

@tb-cg6vd

3 жыл бұрын

@@illinoisenergyprof6878 Now that made me spill my drink!!! You've obviously failed us in not initiating nuclear fusion in a microwave! D- Prof!

Lol wut? Does this guy just keep getting more awesome or what??

We did an experiment this week with 3% hydrogen peroxide as opposed to 30%. As long as one made a good expansive impressive plasma, it killed the viruses. We are in the process of publishing.

@marilynruzic5588

3 жыл бұрын

this is actually "David Ruzic". Not sure why it is showing up as a comment from my wife. Sorry for any confusion

@tcpratt1660

3 жыл бұрын

@@marilynruzic5588 "Illinois EnergyProfs", mayhaps soon? (There is precedent in science, Pierre and Marie Curie as one example, for couples to do science together, after all :) )

hello Kreosan

Looks yummy! Would be better in the microwave!

"you can tell when you have a plasma"

What does this do about restoring the electrostatic charge that is supposedly vital to N95 masks?

@illinoisenergyprof6878

3 жыл бұрын

We have done a huge number of filtration tests on N-95 masks after a number of different treatments. I do not think anything about an electrostatic charge is relevant.

@lyfandeth

3 жыл бұрын

@@illinoisenergyprof6878 I had seen product data, possibly from 3M, saying their N95 face masks relied on an electrostatic charge in the inner material, and that the dissipation of that charge was the main reason they were only good for eight hours. I don't think I misread that from several sources. Maybe, but unlikely.

@illinoisenergyprof6878

3 жыл бұрын

@@lyfandeth That could be an additional feature, but we have tested 3-M N-95 masks filtration ability after up to ten of these treatments, and on masks that are months old, and some just out of the box. We even sent two sets of masks to the CDC for filtration testing. (See results in MedRxiv link in story) There is no statistical difference between the treated masks and the controls.

@lyfandeth

3 жыл бұрын

@@illinoisenergyprof6878 Great! THANK YOU. Now I just to explain why I'm conducting plasma physics in the microwave.(g)

“A metal coat hanger, *uncoated*, works best.” WhAt iF tHe CoAt HaNgEr OnLy HaS a sHiRt On iT?

@tcpratt1660

3 жыл бұрын

If the shirt is from the University of Michigan, it's usage is contraindicated, as there would be a negative void coefficient created, and although there would be no Chernobyl, there would also be no microwave.

I think if you have a burner (pun intended?) microwave, then this could be useful, though I’d rather not have the non-plasma materials getting vaporized/burned in the closed chamber where I put my food in on a regular basis.

I love a good sustained plasma as much as the next guy but really, you could just put that high test peroxide (or ethanol, methanol, isopropanol or acetone) in a spray bottle and spray it on the mask. Methanol is probably best since it's dirt cheap, highly volatile and won't have random junk in it like denatured ethanol.

How does this compare to a UV light box? I have been using a 10 dollar UV lamp in a foil lined box. After 15 min of UV and the ozone produced, I think it will decontaminate thin cloth and paper. I don't have the ability to prove this. This is a low energy, low skill option. I have ran it over night, by mistake, no fires. Hydrogen peroxide is not as easy to find as it use to be, and all my clothes hangers are plastic.

@illinoisenergyprof6878

3 жыл бұрын

We did an experiment with just UV light, and it did not work. One has to test viruses in a saliva/mucus mixture (as they would be when you cough) and the UV light alone could not deactivate them in that environment. You can use a piece of wire instead of a coat hanger. In fact copper works better in that it makes a plasma easier.

Now if you could just get the dirt and dust that plug up the filters.

What about 30 seconds without the plasma?

How can I catch the ozone.?

@illinoisenergyprof6878

3 жыл бұрын

There is likely not enough to worry about catching or re-using. The key is that you can kill the viruses with it.

Great job, doc! Third comment.

How to make Plasma in a microwave? Thats easy. Put in a Pop-tart.

I thought the UV-C that sterilizes penetrates glass?

@illinoisenergyprof6878

3 жыл бұрын

It is not the UV that is doing the work. It is the radicals.

@illinoisenergyprof6878

3 жыл бұрын

By the way ,UV-A -- the lowest energy UV, goes through glass. UV-B and UV-C do not.

My favorite diaclaimer: Do not do this at home. Do it at a friend's house when their parents are away😈

You might want to add a mug of water to absorb the excess uwave energy. It will keep the magnetron cooler and prolong its life.

@illinoisenergyprof6878

3 жыл бұрын

The problem is that I want the antenna to absorb the energy. I do not make a plasma if there is a cup of water. I tried it.

I have to ask, what does that smell like?

@MarkRose1337

3 жыл бұрын

You know the smell after a thunderstorm? That's partially from ozone

its far easier to just put a lit candle under a thermal hardened glass (pyrex) to get plasma. plus it "floats"

I don't know how smart it is to use plastic that is close to plasma and a mask that will go on the face - can it happen that plastic releases toxic gases?

This could save large amounts of waste. Just find a safe metal for the antenna and produce this device in mass! Sadly 3D printers are not that accessible.

America. Where the disclaimer is longer than the actual video...

Doesn't this polute the air inside and the mask with metal particles? Shouldn't be better using graphite electrodes from crayons and instead of a loop make a dipole..?

On accident when I was heating up water for hot chocolate, one time I used a coffee cup with a painted gold band around it. It had a continuous arc all around the rim. Could this be used as an antenna?

audio is imbalanced, you should export in mono

Vaguely remember grapes making good plasma in a microwave, wouldnt mind my mask having a grape smell...

@illinoisenergyprof6878

3 жыл бұрын

I started with grapes, and then making "grapes" out of tin foil. All I really got was a very sticky mess!

X-rays?

@illinoisenergyprof6878

3 жыл бұрын

None. Energy level is not that high.