Make Yourself Invisible With Metamaterials

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Recent advances in the science of metamaterials may let us make invisibility cloaks! (To fully follow along with this presentation, please grab the presentation script from http://granades.com/2010/09/15/my-dragoncon-2010-experience/ ‎)

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Make Yourself Invisible With Metamaterials

  1. 1.
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  7. 7. He’s the one on the right<br />Photo courtesy Robboguy<br />
  8. 8. Make Yourself Invisible!<br />Stephen Granade<br />http://granades.com<br />stephen@granades.com<br />twitter.com/sargent<br />
  9. 9. So what’s invisibility?<br />Classical invisibility<br />Metamaterials (may) solve it!<br />Photo courtesy buttersweet<br />
  10. 10. Photos courtesy UnstablePixel and AF-Photography<br />
  11. 11. Photos courtesy UnstablePixel and AF-Photography<br />
  12. 12. GIANT PLUG<br />Photo courtesy One Tree Hill Studios<br />
  13. 13. Photos courtesy UnstablePixel and AF-Photography<br />
  14. 14. Photo courtesy miss_blackbutterfly<br />
  15. 15. Photo courtesy CyboRoZ<br />
  16. 16. Stephen’s making a LARP joke. Humor him please<br />
  17. 17. So what’s invisibility?<br />Classical invisibility<br />Metamaterials (may) solve it!<br />Photo courtesy buttersweet<br />
  18. 18.
  19. 19. 200,000 km/s<br />300,000 km/s<br />
  20. 20. 1<br />1.33<br />1.000227<br />2.417<br />Photos courtesy tim.perdue, kevindooley, and jurvetson<br />
  21. 21.
  22. 22. n=1<br />n=1.33<br />
  23. 23.
  24. 24. Photo courtesy Wysz<br />
  25. 25. n=1<br />n=1.33<br />
  26. 26. glass core<br />(higher n)<br />cladding<br />(lower n)<br />
  27. 27.
  28. 28.
  29. 29.
  30. 30. Photo courtesy NASA<br />
  31. 31.
  32. 32. So what’s invisibility?<br />Classical invisibility<br />Metamaterials (may) solve it!<br />Photo courtesy buttersweet<br />
  33. 33. Magic!<br />Photo courtesy /mrpunto<br />
  34. 34. Science!<br />
  35. 35. 1<br />1.33<br />1.000227<br />2.417<br />Photos courtesy tim.perdue, kevindooley, and jurvetson<br />
  36. 36.
  37. 37. F@#*ING METAMATERIALS,<br />HOW DO THEY WORK?<br />
  38. 38. One wavelength<br />Photo courtesy kbrookes<br />
  39. 39.
  40. 40. Photo courtesy Jason Valentine/UC Berkeley<br />
  41. 41.
  42. 42. Photo courtesy Jason Valentine/UC Berkeley<br />
  43. 43.
  44. 44. ε = relative electrical permittivity<br />μ = relative magnetic permeability<br />
  45. 45. ε, μ > 0<br />ε < 0, μ > 0<br />?<br />ε > 0, μ < 0<br />ε, μ < 0<br />Photos courtesy tim.perdue, GrungeTextures, and Steffe<br />
  46. 46. DOUBLE NEGATIVE<br />METAMATERIAL<br />ACROSS THE SKY<br />Photo courtesy jcbwalsh<br />
  47. 47. Photo courtesy Nature<br />
  48. 48. Photo courtesy dimas_<br />
  49. 49.
  50. 50. David Smith<br />Metamaterial<br />Photo courtesy Duke University<br />
  51. 51. Photos courtesy Duke University<br />
  52. 52. Photo courtesy Univ. of Maryland<br />
  53. 53. Photos courtesy UC Berkeley<br />
  54. 54. Photos courtesy Karlsruhe Institute of Technology and Science<br />
  55. 55. or bats<br />
  56. 56.
  57. 57. So what’s invisibility?<br />Classical invisibility<br />Metamaterials (may) solve it!<br />Photo courtesy buttersweet<br />

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