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ref: -0 tags: lieber mesh electronics SU-8 recording electrodes flexible polymer glass capillary date: 12-22-2017 00:14 gmt revision:0 [head]

PMID-29109247 Highly scalable multichannel mesh electronics for stable chronic brain electrophysiology

  • Key change was the addition of multiple conductor traces per longitudinal mesh line; this allows them to get 64 or 128 channels per mesh without a dramatic increase in modulus.
  • The latitudinal / diagonal lines still displace tissue ...
  • And the injection mechanism, glass pipette, 650um OD, 400um ID, is pretty large, even for 128 channels.
  • Use carbon nanotube ink, custom CNC printer, to connect to FPC.
    • Pretty impressive that they can manipulate ~800nm thick Su-8 film intraop and have it work well!

{1132}
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ref: -0 tags: mesh silk conformal coating date: 02-21-2012 20:03 gmt revision:0 [head]

PMID-20400953 Dissolvable films of silk fibroin for ultrathin conformal bio-integrated electronics.

  • Mounting such devices on tissue and then allowing the silk to dissolve and resorb initiates a spontaneous, conformal wrapping process driven by capillary forces at the biotic/abiotic interface.
  • Specialized mesh designs and ultrathin forms for the electronics ensure minimal stresses on the tissue and highly conformal coverage, even for complex curvilinear surfaces, as confirmed by experimental and theoretical studies.
    • Wow! cool!
  • polyimide electrode substrates 2.5 - 7.5 um thick. Electrodes were made of anisotropic conductive film.