Graphene | How It's Made
In 2004, scientists extracted a substance called graphene from graphite - the material used to make pencils. Graphene can reveal chemical in the air, as well as disease enzymes in blood. #HowItsMa...
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Narrator: JUST ONE ATOM THICK AND TRANSPARENT,GRAPHENE CAN SNIFF OUT CHEMICALS IN THE AIRAND DISEASE ENZYMES IN BLOOD.A TECHNICIAN LOADS A CAPSULE CONTAINING A COPPER FOIL SHEETINTO A FURNACE.HE SCREWS A CAP ON THE END OF THE CAPSULEAND SHUTS THE FURNACE.HE ACTIVATES A SYSTEMTHAT USES ARGON GAS TO DRIVE OUT OXYGEN.A REACTION OCCURS THAT DEPOSITS GRAPHENE ONTO THE FOIL.GRAPHENE CAN'T BE SEEN WITH THE NAKED EYE.ANOTHER TECHNICIAN DEPOSITS LIQUID PLASTICONTO THE TRANSPARENT GRAPHENE ON THE COPPER FOIL.HE LOCKS THE FOIL IN A MACHINE CALLED A SPIN COATER.IT SPINS AT 3,000 R.P.M.THIS SPREADS THE PLASTICEVENLY ACROSS THE GRAPHENE FILM ON THE FOIL.IT ALSO ACCELERATES THE PLASTIC'S CURING PROCESS.HE THEN SEPARATES THE PLASTIC-COATED GRAPHENEFROM THE COPPER...
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Narrator: JUST ONE ATOM THICK AND TRANSPARENT,GRAPHENE CAN SNIFF OUT CHEMICALS IN THE AIRAND DISEASE ENZYMES IN BLOOD.A TECHNICIAN LOADS A CAPSULE CONTAINING A COPPER FOIL SHEETINTO A FURNACE.HE SCREWS A CAP ON THE END OF THE CAPSULEAND SHUTS THE FURNACE.HE ACTIVATES A SYSTEMTHAT USES ARGON GAS TO DRIVE OUT OXYGEN.A REACTION OCCURS THAT DEPOSITS GRAPHENE ONTO THE FOIL.GRAPHENE CAN'T BE SEEN WITH THE NAKED EYE.ANOTHER TECHNICIAN DEPOSITS LIQUID PLASTICONTO THE TRANSPARENT GRAPHENE ON THE COPPER FOIL.HE LOCKS THE FOIL IN A MACHINE CALLED A SPIN COATER.IT SPINS AT 3,000 R.P.M.THIS SPREADS THE PLASTICEVENLY ACROSS THE GRAPHENE FILM ON THE FOIL.IT ALSO ACCELERATES THE PLASTIC'S CURING PROCESS.HE THEN SEPARATES THE PLASTIC-COATED GRAPHENEFROM THE COPPER...
