Chat with Greg Fridman

Round 4 of the Gloriously Dumb series. I had AI scout the channel and generate the silliest "Can Plasma?" questions it could imagine. This time: 6 questions in the Household & Random category. Two more rounds coming after this. Comment if you want them.

⏱️ Chapters

00:00 These are just fun for me. AI is good at silly questions.

00:11 Round 4: Household & Random, six questions

00:24 Quick intro, Greg Friedman, plasma bioengineer

00:57 Q1: Can plasma fix a pothole?

01:00 A spinoff company we started to remove old road lane markings with plasma (no scarring, unlike grinding)

01:29 Referenced Tesla crash tied to old ghost lane markings

01:33 Same tech works for potholes: clean, partially melt bitumen, better adhesion of the patch

02:04 Q2: Can plasma silence a loud neighbor?

02:16 Ball lightning: a poorly understood phenomenon

02:22 My personal theory: initial plasma strike breaks down water, hydrogen and oxygen burn, self-sustaining

03:03 Control ball lightning, launch it at the neighbor's house

03:15 Military uses plasma as a radar shield (stealth), but not sound blocking

03:39 Otherwise, no

03:43 Q3: Can plasma remove a stripped screw?

03:56 Deposit hydrophilic coating so WD-40 gets into the threads

04:13 Better: use plasma to weld something to the screw, crank it out

04:26 Or weld over the whole area, drill through, forget the screw was ever there

04:33 Q4: Can plasma dry wet socks faster?

04:49 Plasma really likes water (polar molecule, attracted to charges)

05:25 Used industrially as a drying process in printing

05:36 Yes, but expensive electricity, and will discolor and destroy the fibers like bleach

05:56 Verdict: can, but don't

06:08 Q5: Can plasma pop a pimple?

06:30 Two kinds of acne: viral (rare) and bacterial (common)

06:33 Plasma kills bacteria directly, disrupts biofilm

06:59 Reactive species dissolve through skin oils, stimulate immune response

07:15 Attacks from outside AND from inside, without scarring

07:29 Not "pop" a pimple, but yes plasma clears them

07:32 Q6: Can plasma unclog a drain?

07:52 Hydrophilic coating to make the drain slippery (prevent future clogs)

08:09 Chemical etching for many hours (impractical)

08:22 Plasma-treated water penetrates the clog, ROS/RNS break down organic matter

08:41 Or, you know, just use a stick

08:53 Overkill, but can

08:56 Two more rounds left in the series

09:23 Wrap-up, send your own questions in the comments

If you liked the first three rounds (Food & Kitchen, Personal & Grooming, Animals), this is your continuation.

🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman

#CanPlasma #GloriouslyDumb #PlasmaScience #AI #Household #Acne #Potholes #SciComm

A viewer asked: are cryogenic engineers often found in the plasma industry, and what would they do there? Short answer: not in my part of the field. But there is one place where they're essential, and it happens to be the most extreme engineering job you can pick.

⏱️ Chapters

00:00 The question: cryogenic engineers in the plasma industry?

00:07 Quick intro, Greg Friedman, plasma bioengineer

00:24 The viewer's question in full

00:41 Reframing: plasma is the 4th state of matter, not "an industry"

00:43 It's like saying "the liquid industry" or "the solid industry"

01:15 Most commodity plasma work is atmospheric pressure (cheapest option)

01:31 Ag, medicine, environmental remediation: no cryo needed

01:45 Where cryogenic temperatures do become essential

02:01 Fusion is the exception

02:03 Fusion people are a different discipline from plasma people

02:26 Superconducting magnets cooled with cryogenic systems

02:39 Near zero Kelvin on one side of the wall

02:46 Multi-million degree plasma on the other side of the same wall

02:57 If I had to do it all over again, I'd consider fusion

03:15 The lowest and highest temperatures humanity can make, one wall apart

03:55 What I actually am: atmospheric-pressure plasma chemist

04:11 Why I avoid low pressure (expensive pumps and chambers)

04:32 Why I avoid high pressure (30+ atmospheres is another kind of expensive)

04:41 Where I actually work: plasma for agriculture, PFAS cleaning, commodity applications

04:49 Cost minimization and robustness

04:57 Skills required to enter the field

05:05 Find good schools, find advisors

05:12 My PhD had 7 advisors (yes, you can do that)

05:22 The hack: tell advisor #1 you're with #2, tell #2 you're with #3, take the day off

05:29 Have multiple mentors, ask them for guidance

05:32 Not the easiest field. Rewarding when it works.

05:43 If I'd studied fusion instead of ag tech and sewer water, I could be designing reactors

05:52 …which is what I'm working on now

05:59 Can't talk about it until the patent is granted

06:10 It's running at about 1 Kelvin. So yes, we'll need cryogenic engineers.

06:15 Wrap-up, thanks for the question, post more in the comments

If you're a student choosing a field, an engineer thinking about a career pivot, or you've ever wondered why fusion feels different from the rest of plasma, this is the episode.

🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman

#PlasmaScience #FusionEnergy #CryogenicEngineering #Careers #Engineering #PlasmaPhysics #PhD #Fusion #IndustrialEngineering

Next in the "Can Plasma?" series: can plasma make food safer? Yes. And it's a Pandora's box, with over 10,000 Google Scholar papers on the topic. Let me classify it for you, then share my favorite application: pre-loaded antimicrobial ice on your strawberries.

⏱️ Chapters

00:00 A very broad question, a shallow dive today

00:10 Quick intro, Greg Friedman, plasma bioengineer

00:32 Let's classify. Three plasma types plus food types.

00:40 Non-equilibrium atmospheric-pressure cold plasmas

01:03 Type 1: Dry plasma in humid air (cheapest option)

01:10 Antimicrobial: biofilms, bacteria, fungal spores, mold, viruses

01:36 Type 2: Moist plasma with water droplets, vapor, or alcohol

01:49 Boosted OH radicals and hydrogen peroxide production

02:14 Type 3: Plasma-treated liquid as a bleach replacement

02:22 Foods that need each: dry grains, coffee, spices (dry only); milk, eggs (low temp)

03:04 The full food chain: harvest, chill, transport, package

03:13 Bird poop on lettuce: plasma at the source

03:38 Yuma, Arizona harvest at 100°F, rapid chilling, cross-contamination risk

04:04 Plasma coatings on the packaging itself

04:24 Plasma gel developed for the diaper under raw chicken (kills salmonella on contact)

04:51 My favorite application coming up

05:36 Plasma-treated water droplets carry hydrogen peroxide and peroxynitrite

05:56 Fly them through a freezer with strawberries

06:02 Droplets freeze on the berries as snowflakes and ice

06:17 Antimicrobials sit dormant while frozen

06:25 On defrost, they release and kill any surface bacteria as the fruit thaws

06:55 You eat safe, freshly defrosted strawberries

07:06 The broader field: over 10,000 papers on Google Scholar

07:22 Wrap-up, ask specific food safety questions in the comments

If you work in food processing, packaging, agriculture, cold chain, or food safety regulation, this is the map episode. The chicken diaper and strawberry ice examples are ready to steal.

🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman

#CanPlasma #PlasmaScience #FoodSafety #FoodProcessing #Agriculture #Sterilization #FoodTech #ColdChain #Packaging #PlasmaChemistry

Round 3 of the Gloriously Dumb series. I had Claude scout my channel and generate the silliest "Can Plasma?" questions it could invent. Today's category: Animals. Four questions. Three actually had real answers, and there's a Caribbean mosquito-zapper story you'll want to hear.

⏱️ Chapters

00:00 Quick note on embracing AI (before we dive in)

00:26 AI scouted my channel for silly questions again

00:39 Round 3: Animals. No prep, just answering as I go.

00:49 Quick intro, Greg Friedman, plasma bioengineer

01:09 Four questions in the Animals category

01:13 Q1: Can plasma make a dog smarter?

01:20 Dog training whistles: inaudible to humans, audible to dogs

01:36 Plasma frequency is also inaudible to humans, audible to dogs

01:40 My lab dog always runs away when I turn on plasma

02:02 Plasma-to-LED training progression: sound cue then light cue then just light

02:16 Yes, indirectly, plasma can make a dog smarter

02:26 Q2: Can plasma stop a cat from knocking things off tables?

02:43 Tuned plasma can deliver a mild shock (like a plasma toy)

03:01 A plasma coaster the cat learns to avoid

03:09 Hydrophilic coatings to help things stick to the table better

03:26 Where did AI even come up with this one? Definitely gloriously dumb.

03:33 Verdict: plasma can't really solve this one

03:38 Q3: Can plasma repel mosquitoes?

03:47 Two angles here

03:59 Angle 1: plasma-charge mosquito spray droplets so they stick to skin more uniformly

04:20 Angle 2: the bug zapper. UV lamps and plasma zappers.

04:38 The Amazon tennis-racket plasma zapper (a few bucks)

04:51 A Caribbean Airbnb story: 26 mosquitoes in one evening

05:12 That's kill, not repel. Direct repel via plasma sound? Not sure.

05:19 What plasma can do: deposit repellent coatings more uniformly

05:41 Q4: Can plasma make fish glow brighter?

05:48 (Thanks, Claude)

05:54 GFP (green fluorescent protein) fluoresces in UV

06:18 Plasma produces lots of UV, so yes, it can charge fluorescent proteins

06:35 Same logic as the old glow-in-the-dark watch dials

06:52 UV lamps get dirty, plasma sources don't (no moving parts)

07:09 These aren't that dumb. AI is surprisingly good at edge-case questions.

07:15 Where plasma UV beats lamp UV (durability, no moving parts)

07:28 Where lamps beat plasma UV (cost, broad spectrum, sun)

07:52 Wrap-up, keep sending your questions, I read all of them

If you're a dog owner, mosquito-hater, biologist, or you just enjoyed the first two rounds of Gloriously Dumb (Food & Kitchen, Personal & Grooming), this is your continuation.

🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman

#CanPlasma #GloriouslyDumb #PlasmaScience #AI #Claude #Animals #Mosquitoes #GFP #SciComm

Next in the "Can Plasma?" series: can plasma destroy viruses in the air? Short answer: yes, easily. Long answer: the killing is the easy part. Getting it deployed on an airplane, in your HVAC, or in a respirator is where the real engineering happens.

⏱️ Chapters

00:00 The question: can plasma destroy viruses in the air?

00:03 Easiest thing plasma does

00:07 Quick intro, 2.5 decades of doing this

00:26 What a virus actually is (DNA plus a thin wrapper, very little protection)

00:38 Why bacteria are much harder to kill (cell walls, spores)

00:53 Bacteria have more protection built in than viruses

00:56 Viruses don't travel alone: cough droplets carry biological material

01:12 Approach 1: trap on a filter, plasma treat the filter

01:27 Approach 2: plasma mesh, air passes through with zero pressure drop

01:44 The number: about 1 log reduction (90% kill) in a single pass

01:56 Trivial to do in a petri dish in the lab

02:05 The real challenge starts when you leave the lab

02:14 Case study: airplane cabin air

02:24 Trapped in an aluminum tube with strangers who are coughing

02:32 Airplanes are terrified of ignition sources

02:35 Small fuel leak plus plasma equals spark plug equals boom

02:52 Not going to happen in a passenger cabin

02:56 Where are you installing it? Humans? Pets? What about ozone?

03:16 Ozone management options: heat destruction or activated carbon

03:22 Both are proven in air filtration systems

03:46 90% kill per pass, from thousands of experiments

03:51 The catch in HVAC: heating to destroy ozone also heats the house

04:10 What about plasma respirators?

04:17 Great in theory: plasma treats air as you breathe

04:26 The catch: no ozone requires a no-oxygen plasma, which means no oxygen to breathe

04:36 So can plasma destroy viruses? Very easily.

04:40 What plasma makes: OH radicals, H2O2, atomic oxygen, NO, peroxynitrite, plus VUV

05:19 The real question is not "can it kill" but "how do you commercially implement"

05:29 That's most of my daily focus

05:33 Regulatory bodies, OSHA, thousands of implementation issues

05:46 Come to school, become a plasma chemist, join us

05:52 Wrap-up, questions welcome in the comments

If you're in HVAC, air filtration, aerospace, medical device design, or public health, this is the deployment reality episode.

🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman

#CanPlasma #PlasmaScience #AirFiltration #Viruses #Aerosols #HVAC #IndoorAirQuality #PublicHealth #PlasmaChemistry

Next in the "Can Plasma?" series, a meta episode: can plasma actually cure everything? My running joke on this channel is that if your question starts with "can plasma," the answer is usually yes. Time to be honest about where that joke breaks.

⏱️ Chapters

00:00 The question: can plasma cure everything?

00:06 Quick intro, Greg Friedman, plasma bioengineer

00:23 My running joke: open a medical dictionary, plasma probably does something

00:47 The honest answer: no, that's just a joke

00:52 What plasma actually does: strong oxidizer, controllably skews redox balance

01:08 Coagulation cascades (intrinsic and extrinsic) respond to redox

01:25 A lot of biological processes are influenced by plasma

01:32 Cure everything? No.

01:38 Severe mental disorders: I can't think of much plasma can do

02:03 Decayed tooth with damaged nerve: can plasma revive it and rebuild the tooth? No.

02:13 Biology is complicated

02:20 The dose and dose rate argument

02:27 Whiskey analogy: one bottle can be a lot, or nothing, depending on rate

02:50 Dose is how much you deliver. Dose rate is over what time.

03:03 100 pounds of steak? Not too much, if it's over 5 years

03:11 The chemistry you deliver controls what happens

03:20 Some changes are irreversible

03:23 The thermoset vs thermoplastic analogy

03:34 Once a thermoset is set, you can decompose it but you cannot melt it

03:44 That's why we can only recycle half of plastics

03:53 Location matters too

04:07 Can plasma even reach where you need to treat?

04:15 Plasma inside the brain: how do you deliver it? Drill a hole? Not gonna work.

04:30 Bottom line: can plasma do a lot of things? Yes. Everything? No, sorry.

04:39 Wrap-up: send more questions, comment section is open

If you've watched a bunch of "Can Plasma?" episodes and started to wonder where the honest limits are, this is that episode.

🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman

#CanPlasma #PlasmaScience #PlasmaMedicine #Bioengineering #DoseResponse #Biology #ScienceCommunication

Round 2 of the Gloriously Dumb series. I asked Claude to look at my channel and generate the dumbest "Can Plasma?" questions it could imagine. Today's category: Personal & Grooming. Four questions. Three of them turned out to be legit. One completely stumped me.

⏱️ Chapters

00:00 The setup: Claude, gloriously dumb, round 2

00:11 Second in the series (Food & Kitchen was round 1)

00:14 Today's category: Personal & Grooming

00:21 Quick intro, Greg Friedman

00:47 Loving this AI-generated format

00:54 Q1: Can plasma cure a hangover?

01:09 What a hangover actually is (blood brain barrier, methanol crossing, alcohol byproducts)

01:41 You got me. Nothing.

01:48 Let me try anyway: room smell, gastric acid, plasma-treated water

02:19 Got me. Zero for one.

02:21 Q2: Can plasma fix bad breath?

02:29 Yes, actually. Halitosis from chronic tonsil infection.

02:36 More people suffer from this than you'd think

03:05 The current option is surgery to remove tonsils. Big deal in your 20s, 30s, 40s.

03:23 Plasma-treated liquid gargle: non-surgical, non-antibiotic

03:32 One gargle, works amazingly well

03:36 Mechanism: suppresses bacteria hiding on the tonsils

03:53 No known side effects, quite quickly

03:57 Q3: Can plasma do my laundry?

04:04 Referenced back to my hospital laundry episode

04:11 During the drying cycle, yes

04:16 Inactivates pathogens and kills viruses the wash cycle missed

04:26 If you want more, search the channel

04:35 Q4: Can plasma untangle headphones?

04:38 This is the one AI thought was dumbest

04:43 Wires stick to each other because they're not hydrophobic

04:51 Plasma-treat the cable surface

04:54 Now they slide against each other, don't stick

05:19 This is actually a legitimate problem people have with wired earbuds

05:33 Awesome question, AI

05:38 More rounds coming. Leave a comment if you want them.

If you liked round 1 (Food & Kitchen), this is your continuation. Halitosis and headphones both turn out to be real applications.

🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman

#CanPlasma #GloriouslyDumb #PlasmaScience #Grooming #Halitosis #AI #Claude #SciComm

We've been hearing "10 years of oil left" for decades. It's the free beer tomorrow sign of the energy world. But crude oil and other natural resources really are getting scarcer and lower quality, and syngas (a mixture of carbon monoxide and hydrogen) is one of the strongest plasma powered answers to that problem.

In this episode I answer a viewer question from LinkedIn about the wave of syngas startups using plasma and natural gas, and what it means for the shift away from fossil fuels.

We cover what syngas actually is, how plasma can produce it from methane and water or straight from municipal trash, and the wide range of things you can do with it: ammonia for fertilizer, methanol and other alcohols, liquid fuels, electricity, hydrogen fuel cells, even reducing iron ore into metal.

Chapters:

00:00 Running out of crude oil

00:12 Meet Greg Fridman

00:23 The viewer question on syngas startups

00:41 The "10 years of oil" myth

01:28 What is syngas

01:46 What syngas can be used for

01:55 Ammonia production for fertilizer

02:41 Methanol, vodka, and other alcohols from CO2

02:55 Liquid fuels and valuable chemistries

03:32 Hydrogen as rocket fuel

03:49 Burning syngas for electricity

04:05 Hydrogen fuel cells

04:10 Reducing iron ore with syngas

04:33 Making syngas from methane and water with plasma

05:10 Making syngas from trash with plasma

06:02 The trend toward plasma made carbon sources

06:42 Closing thoughts

Got a question, plasma related or not? Drop it in the comments and I'll answer it on the channel.

#CanPlasma #Syngas #PlasmaTechnology #CleanEnergy #Hydrogen #Sustainability #WasteToFuel #PlasmaChemistry

A viewer sent me a provocative theory: all disease can be explained in 9 words. "Electron replete healthy cells are irreducible. Disease is oxidation." I don't disagree. I also don't agree. Let me walk you through it, all the way back to the Miller experiment and the origin of life.

⏱️ Chapters

00:00 "Disease is oxidation"

00:03 A viewer question about evolution, origin of life, and plasma

00:19 Quick intro, Greg Friedman

00:35 The viewer's 9-word theory in full

01:11 My answer: I agree and I disagree

01:21 Without oxidation, you'd be dead. Every cell needs oxygen.

01:32 The trick question: how much free oxygen is in your blood right now?

01:47 Answer: none. Oxygen is bound to hemoglobin and handled carefully because it's toxic

02:12 The whole system is built to control oxidation

02:28 Inflammation and oxidative markers do go together

02:33 Immune cells generate reactive oxygen species to attack foreign organisms

02:54 Other immune cells detect those ROS and rush to the site

03:15 My favorite biochemical: peroxynitrite

03:40 Redox balance: cells maintain reduction/oxidation balance very tightly

03:47 This is evolutionary

03:58 The bacterial origin story: mitochondria has its own DNA

04:13 Mitochondrial DNA is bacterial DNA

04:25 Splits like a bacterium, double cell wall like a bacterium

04:34 Either the bacteria built protection, or they invaded existing cells

04:48 You are a walking tank protecting billions of bacteria from oxidative stress

05:12 The reversal: oxidation is not the disease. Oxidation created life.

05:15 The Miller experiment

05:25 A sealed glass jar with methane, nitrogen, water, no oxygen

05:44 A little spark of lightning (plasma!)

05:50 A few weeks later, the water turned brown

06:01 Amino acids. Then microorganisms. Then plants.

06:23 Plants started producing oxygen, which killed early bacteria

06:25 Surviving bacteria built protection. That protection became us.

06:35 The tank is now watching this video

06:41 Oxidation is the foundation of life

06:51 Where plasma kicks in: it disrupts redox balance intentionally

06:53 Even the Miller experiment lightning was plasma

07:03 Plasma treatment "kicks aged cells a little harder" when they stop responding

07:57 Downstream effects: wound healing

08:01 Anti-tumor and anti-cancer activity

08:05 Coagulation, angiogenesis

08:22 So: oxidation is bad? You're wrong. Oxidation is good? You're right.

08:30 I agree and disagree at the same time

08:37 Can I explain all disease in 9 words? No. Biology is genuinely complex.

09:20 But redox is under a lot of it

09:35 Wrap-up, post more questions like this in the comments

If you're a biochemist, physiologist, or someone thinking hard about health and aging, this one's for you.

🔔 Subscribe for more: @gregfridman

#PlasmaScience #Oxidation #RedoxBalance #Biochemistry #OriginOfLife #MillerExperiment #Physiology #PlasmaMedicine #Evolution

Next in the "Can Plasma?" series: can plasma remove stains? Yes. But it also removes the shirt underneath. And the wood table. And your carpet fibers. Let me walk you through why plasma loses to bleach in your living room and wins at the hospital.

⏱️ Chapters

00:00 The question: can plasma remove stains?

00:03 Depends on the stain, depends on the surface

00:10 Quick intro, Greg Friedman, plasma bioengineer

00:26 Setting the scene: your t-shirt, your couch

00:32 Common household stains (coffee, blood, cat mishaps)

00:45 Step 1: remove the bulk of the material first

01:07 What you're left with: color pigments

01:12 How bleach and hydrogen peroxide work (oxidation)

01:19 Plasma does the same chemistry

01:25 So why would you use plasma? Bleach is cheap

01:32 The industrial reason: liquid processing loses to dry processing

01:40 Liquids need storage, disposal, activity monitoring

01:48 Plasma: turn on, turn off, always the same

02:00 The chemistry: ROS, RNS, hydrogen peroxide, OH radicals, peroxynitrite, atomic oxygen

02:32 Plasma is very good at breaking down organic matter

02:41 The problem: plasma is not selective

02:53 If your table is wood, plasma etches the stain at the same rate it etches the table

03:12 If your shirt has a stain, plasma removes the stain AND the dye AND the fibers

03:32 Be careful before switching from wet to dry processing

03:45 So: at home, bleach probably wins on cost and simplicity

04:15 Where plasma wins: hospital laundry, hospital curtains

04:30 High repeatability, ease of use, no chemical storage

04:44 Reference back to my earlier hospital laundry episode

04:56 Wrap-up: ask questions in the comments, that's how we build this channel

If you're in laundry technology, textile processing, hospital operations, or you just wondered why plasma isn't in your washing machine yet, this is the episode.

🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman

#CanPlasma #PlasmaScience #Laundry #StainRemoval #TextileScience #HospitalOperations #IndustrialProcessing #PlasmaChemistry