Chat with Greg Fridman

Gregory Fridman

I'm Greg Fridman, a PhD in Bioengineering and an expert in non-equilibrium plasmas. This channel is a space for direct chats about the things that actually matter: the future of biotech, the fascinating physics of plasmas, and the unfiltered reality of the scientific life. No jargon, no gatekeeping—just the science. Subscribe to join the conversation as we explore how bioengineering is reshaping our world and what it’s really like to work at the edge of discovery.

  1. 1d ago

    Syngas: The Plasma Trick That Turns Waste Into Fuel

    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

    Syngas: The Plasma Trick That Turns Waste Into Fuel

  2. 3d ago

    Oxidation Didn't Cause Disease. Oxidation Created Life.

    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

    Oxidation Didn't Cause Disease. Oxidation Created Life.

  3. 6d ago

    Can Plasma Remove Stains? Yes. And Your Shirt.

    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

    Can Plasma Remove Stains? Yes. And Your Shirt.

  4. Jul 23

    How I Answer Questions I Don't Know (A Scientist's Framework)

    I got a question I don't know how to answer, applied my standard framework, and then decided the framework itself was worth a video. Here is how I handle questions outside my field: what I say, who I say it to, and how I actually research an answer without letting Claude hallucinate at me. ⏱️ Chapters 00:00 A question I can't answer, and my usual technique 00:18 Why I'm sharing the framework itself 00:30 Quick intro, Greg Friedman, PhD bioengineer, startup co-founder 00:40 The question: glass substrates and laser-induced deep etching for chips 01:28 Reminder that plasma is a wide field, and mine is narrow 01:40 What I actually work on: environmental remediation, medical, surface treatment 01:53 Huge parts of plasma I know nothing about 02:02 Why executives, business people, and investors see me as "the scientist" 02:13 The most overeducated person in the room 02:23 Laser-induced deep etching, and how easy it would be to b******t around it 02:54 Bullshitting undermines credibility. Don't do it. 02:56 Instead, I check who is asking 03:09 Case 1: social conversation (used to be the cute girl at a party) 03:23 Politely redirect: not my topic, but here's a related one I can talk about 04:14 Case 2: investor or boss 04:19 My time has real cost, so my response has real cost too 04:30 How I actually research topics I don't know 04:34 DO NOT prompt AI directly on a topic you can't validate 04:42 You cannot detect its hallucinations if you don't already know the answer 04:58 What I do: download a dozen peer-reviewed papers from high-ranking journals 05:11 Load them into Claude, ask it to answer using only those references 05:29 How I actually reply to an investor: I'll dig in, next Monday afternoon 06:07 Deliberately put a delay in there to test the ask 06:15 Nothing is free. Favor for favor. 06:47 Repeat asks without reciprocation, wrong fit, move on 07:02 Bonus: doing the free version tells me who is actually in front of me 07:17 So today's answer: not my field, but here are two adjacent things I can talk about 07:36 Wrap-up: send me science questions, I will make videos or tell you I don't know If you're a founder, a scientist, or anyone who gets pulled into technical conversations outside your specialty, this is the episode. 🔔 Subscribe for more: @gregfridman #Science #Research #Founders #Scientists #AI #Claude #ResearchMethods #Mentorship #Communication

    How I Answer Questions I Don't Know (A Scientist's Framework)

  5. Jul 21

    Can Plasma Break Down Nuclear Waste? No. But It Can Turn It Into Glass.

    Next in the "Can Plasma?" series: can plasma break down nuclear waste? A viewer on LinkedIn asked. The literal answer is no. The useful answer is that plasma is one of the top solutions for what we CAN do with it: turn it into glass. ⏱️ Chapters 00:00 The question from LinkedIn 00:13 Quick intro, Greg Friedman, plasma bioengineer 00:30 The question in full: can plasma break down nuclear waste? 00:39 The sun analogy: pile any junk under a real thermonuclear plasma and it burns 00:53 Thermonuclear plasma on Earth: tokamaks at 100s of millions of degrees 01:17 Can you drive to Princeton with a bucket of trash? No, they won't let you 01:36 The practical version: plasma gasifiers using thermal torches 01:43 Torch temperatures: 10,000 to 30,000 Celsius 02:11 Still not hot enough to break down spent uranium 02:27 So plasmas are useless? Not exactly 02:35 What we actually do: vitrification 02:42 Two common feedstocks: contaminated soil and radioactive-labeled biological samples 03:10 Where plasma shines: burning off all the non-radioactive junk 03:25 Then mix the residue with sand, melt with plasma 03:32 Result: everything locked into glass rocks (literal glassification) 03:48 Very low leaching, no radioactive runoff 04:06 Same system handles medical waste today, soil tomorrow 04:30 Problem solved? Kind of 04:33 Volume reduction of at least 10x 04:38 You still need to store it, just less of it 04:44 Plasma is energy hungry, and we are entering a data center power crunch 05:04 Gas consumption is high (argon or nitrogen), and off-gas cleanup is real 05:33 Off-gas from nuclear-waste plasma processing is pretty dirty 05:37 So can plasma help? Yes. Break down nuclear waste? No. 05:45 One of the top solutions available today, with real tradeoffs 05:55 Nothing is perfect, and we need more plasma engineers, not fewer 06:00 Data centers need more electricity, so we build more nuclear reactors 06:09 More reactors means more waste to handle 06:11 Which means more plasma engineers to build the systems that handle it 06:19 Apply to university, study plasma, become one of us 06:22 Wrap-up If you work in nuclear waste management, industrial plasma, or you're a student wondering where the field is heading, this is the episode. 🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman #CanPlasma #PlasmaScience #NuclearWaste #Vitrification #NuclearEngineering #WasteManagement #IndustrialPlasma #EnergyEngineering #DataCenters

    Can Plasma Break Down Nuclear Waste? No. But It Can Turn It Into Glass.

  6. Jul 18

    Can Plasma Replace Your Stove? A Cigar Lighter Story and a Safety Nightmare

    Next in the "Can Plasma?" series: can plasma replace your stove? A viewer sent me a great question about the plasma cooktops appearing online, whether they could replace propane/natural gas, and whether the same technology could replace oxyacetylene torches. Short answer: no on Earth, yes in space, and please don't buy the AliExpress ones. ⏱️ Chapters 00:00 The question: plasma stoves, torches, and efficiency 00:07 Quick intro — Greg Friedman, plasma bioengineer 00:34 The viewer's setup: plasma cooktops replacing gas burners 00:59 Also asking about replacing oxyacetylene and propane torches 01:10 A funny story: the plasma cigar lighter I built for a boss 01:24 It worked — a gliding-arc based lighter for a big cigar smoker 01:38 Expensive, gimmicky, and natural gas is cheaper 01:52 The alternative: resistive heating (already lights your cigar just fine) 02:01 My first reaction to "plasma stove": b******t 02:07 I dug in — there are vendors, mostly AliExpress and Alibaba 02:16 Reads like marketing junk to me 02:31 A few YouTube videos show them working — sure, they can 02:38 The camping trade-off: propane canister vs battery + electric stove 03:14 Per unit of energy, propane wins on weight 03:20 Resistive and inductive heaters are decades-optimized 03:34 My hunch: plasma efficiency loses to resistive on Earth 04:20 The real problem #1: NOx production 04:22 Thermoplasma runs hotter than flame → more nitrogen oxides 04:31 NOx + water = nitric acid → don't breathe it near your stove 04:44 Regular burners produce NOx too, but at lower temperature and lower concentrations 05:02 The real problem #2 (the big one): safety 05:05 Thermal plasma needs 2 electrodes, high voltage, exposed metal 05:20 If you get your finger near the arc, it jumps to you instead of the other electrode 05:36 Barefoot on grass while camping? "You gonna die." 05:59 Or: metal frying pan handle → arc jumps to the pan → into your finger 06:15 As a novelty for someone's cigar? Sure 06:31 As a commercial product? Enormous safety-engineering problem 06:38 Tiny plasma lighters for candles/cigarettes exist and are fine 06:46 Scaling that up to "boil a pot of soup" is another thing entirely 06:52 A white paper I'm working on: industrial uses of plasma as a heat source 07:27 Localized heating for metal bending — no need to heat the whole sheet 07:41 Sputter cleaning and surface prep 07:48 In space (vacuum), you can cold-weld: two clean, flat metal surfaces just fuse 08:18 Adding hydrogen to the plasma to prep and clean surfaces for cold welding 08:35 Plasma as a chemical reduction agent for hydrocarbon or water contamination 08:54 Surface activation for adhesion 09:03 Near-surface metallurgy: heating just a thin layer to change metal properties 09:27 Why this matters now: space manufacturing 09:30 Electricity is abundant in space (solar + small nuclear); natural gas isn't 09:56 Plasma needs little more than electricity — a competitive edge in orbit 10:02 On Earth, natural gas is very hard to beat as a heat source 10:26 The verdict: plasma for cooking hot dogs on Earth? Nope. 10:33 Plasma for cooking hot dogs in space? Yes — astronauts are trained not to touch the arc 10:47 Specialty applications where price doesn't matter? Absolutely 10:59 Wrap-up — send more questions like this If you're an aerospace engineer, materials scientist, or you saw a "plasma stove" on Alibaba and wondered whether to buy it — this is the episode. 🔔 Subscribe for more in the "Can Plasma?" series: @gregfridman #CanPlasma #PlasmaScience #Cooking #SpaceManufacturing #Manufacturing #ColdWelding #Metallurgy #Aerospace #IndustrialEngineering #PlasmaChemistry

    Can Plasma Replace Your Stove? A Cigar Lighter Story and a Safety Nightmare

  7. Jul 16

    The Future of Medicine: Why the Pendulum Is Swinging Back to Devices

    A viewer sent me one of the most thoughtful questions I've gotten on this channel: what does the future of medicine look like in the next 5 to 10 years? And specifically — can plasma and bioelectric therapies be used for health optimization, not just pathology treatment? Long one. Worth it. ⏱️ Chapters 00:00 The question: future of medicine, next 5-10 years 00:20 Quick intro — Greg Friedman, plasma medicine since ~2000 00:40 Reading the (long, thoughtful) viewer question 01:22 The key ask: plasma therapies for health optimization 01:29 Why devices are currently approved as treatment for pathologies, not optimization 02:07 Broader bioelectric therapies as preventative care 02:14 Why this space is underexplored 02:22 The "sick care" model critique 02:33 Devices used in the 1800s that we're only now understanding scientifically 02:55 The viewer's prediction: major change to healthcare in the next decade 03:00 "Standard pill care reached its limits" 03:06 Sorry, that was in tiny font 03:15 The historical arc: cold baths, red light, device-based medicine 03:44 Penicillin arrives — and the revolution begins 03:53 The pendulum swings hard toward pharmaceutical agents 04:03 150 years later: you leave the doctor with a pile of pills 04:29 Pills for the side effects of the first pill, then more pills for those 04:35 The pile grows with age 04:44 But recent developments in devices are amazing 04:57 Plasma in cancer resection surgery — treating tumor margins 05:25 Plasma for acne, scarring, cosmetic conditions 05:37 The bioelectrics field 05:44 Lasers on the rise 05:53 Combination therapies — plasma as adjuvant to chemo 06:05 The pendulum is swinging back toward devices 06:16 Why devices are also attractive to medical professionals 06:33 Why patients accept paying for device treatments more easily than pills 07:10 Rising disposable income makes this economically possible 07:27 Plasma device development is driven by microelectronics 07:30 Better/cheaper/faster phones → better manufacturing → medical spillover 07:43 Advances in materials science, biology, biochemistry 08:11 The Apple Watch and data collection systems 08:21 Exporting my Apple Health data 08:28 5.5 gigabytes of raw text data about me 08:44 Coupling wearable data with large language models 08:48 Tuning devices — not just drugs — to specific patients 09:08 Why device tuning is easier than drug tuning (frequency, amplitude, dose, dose rate) 09:29 One patient, one Apple Watch, one dose. Next patient, different. 09:53 Devices are programmable in a way pills aren't 09:58 Ag tech: drones + plasma targeting a specific pathogen on a specific leaf 10:18 Heavy regulatory friction: FDA and USDA 10:39 Fingers crossed on 5-year timelines 10:50 Not a revolution — a slow, real shift 11:12 In 3 years, we'll start seeing these devices on the market 11:20 …and watching them interact with AI 11:35 Follow-up video likely — send more questions like this If you're a physician, researcher, medical device founder, or a patient wondering where healthcare is heading — this is my honest 10-year outlook. 🔔 Subscribe: @gregfridman #PlasmaMedicine #FutureOfMedicine #HealthTech #Bioelectrics #MedicalDevices #Wearables #DigitalHealth #AI #Healthcare #PrecisionMedicine

    The Future of Medicine: Why the Pendulum Is Swinging Back to Devices

  8. Jul 14

    How Do You Actually Make Plasma? From a $3 Amazon Kit to a Particle Collider

    A viewer asked one of the best beginner-friendly questions I've gotten: how do you actually make plasma in a lab? Is it expensive? Can a regular person build one? Great question — with an answer that spans $3 to over a billion dollars, depending on how you want to do it. ⏱️ Chapters 00:00 The question: how do you make plasma? Is it doable at home? 00:11 Quick intro — Greg Friedman, plasma bioengineer 00:54 The four methods: radiation, light, high voltage, and kinetic 01:11 Method 1: Radiation 01:16 Plasma is just ionized gas — radiation ionizes it 01:47 The radiation source itself isn't expensive 02:04 The facility is. Certification, shielding, monitoring, training. 02:33 Bottom line: hundreds of thousands, mostly in safety 02:46 Method 2: Light (lasers) 02:56 Focus a laser, high-energy photons ionize gas and metal 03:32 A $100 10W laser can etch metal or paper 03:59 Fiber lasers: thousands. Industrial cutters: under $100K. 04:37 Well-developed, off-the-shelf, mature technology 04:58 If I were building one today, I'd buy the components 05:07 Method 3: Kinetic (particle colliders) 05:13 Smash molecules together, electrons fly off, plasma 05:28 Study individual particles — Higgs bosons, exotic plasmas 05:44 Can you build one at home? A ghetto one, sure. 05:55 A real accelerator: billions of dollars 06:30 The costs are dominated by vacuum pumps and long tubes 07:03 A few hundred thousand for small effects, billions for interesting ones 07:05 Method 4: High voltage (saved for last) 07:13 Two electrodes + high potential difference 07:33 The magic number: 32,000 volts per centimeter to ionize air 07:58 The transformer trick — turns ratio steps voltage up 08:52 A 100V input with 1000× turns ratio = 100,000V output 09:22 Trade-off: current drops proportionally (power is conserved) 09:37 Can you do this at home with cheap parts? 09:40 A magnetic core costs pennies. Wind copper wire by hand. 09:54 Plug into the wall, get 60Hz 100,000V on the output 10:07 Then real life: overcurrent protection, safety engineering 10:27 Plasma power supplies on Amazon for a few bucks 10:44 The $3 Amazon power supply — 10% efficient 11:04 For a mushroom growing experiment, 10% efficiency is fine 11:28 The moment industry gets involved, electricity matters 11:45 Increasing efficiency = increasing complexity 12:06 Our own lab's power supply hits 80% efficiency (proud of that) 12:16 Industrial systems with matching networks: millions of dollars 12:27 Dynamic load sensing microelectronics 12:40 Why this matters for chip manufacturing (billions of chips × pennies) 13:09 And for industrial melting, where energy cost = product cost 13:25 These are old, mature technologies with fierce competition 13:32 The lab vs industry split: cheap and easy in the lab 13:55 CAPEX and OPEX questions dominate industrial application 14:07 So — the summary 14:18 Can you make plasma with any of the 4 methods? Yes 14:22 Easily and cheaply in a lab? Yes 14:35 Easily, cheaply, competitively at industrial scale? No — that's where I work 14:53 Wrap-up — send more questions like this If you're a student, a maker, a science teacher, or just curious what it takes to make plasma yourself — this is the episode. 🔔 Subscribe: @gregfridman #PlasmaScience #PlasmaPhysics #DIY #MakerScience #Physics #Electronics #HighVoltage #Lasers #ScienceEducation #ResearchLab

    How Do You Actually Make Plasma? From a $3 Amazon Kit to a Particle Collider
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About

I'm Greg Fridman, a PhD in Bioengineering and an expert in non-equilibrium plasmas. This channel is a space for direct chats about the things that actually matter: the future of biotech, the fascinating physics of plasmas, and the unfiltered reality of the scientific life. No jargon, no gatekeeping—just the science. Subscribe to join the conversation as we explore how bioengineering is reshaping our world and what it’s really like to work at the edge of discovery.

Information

  • Creator
    Gregory Fridman
  • Years Active
    2026
  • Episodes
    78
  • Rating
    Explicit
  • Copyright
    © Gregory Fridman
  • Show Website
    Chat with Greg Fridman