Femtosecond Laser 3D-printing of Conductive Microelectronics for Potential Biomedical Applications

Annu Int Conf IEEE Eng Med Biol Soc. 2021 Nov:2021:1197-1200. doi: 10.1109/EMBC46164.2021.9630885.

Abstract

Development of soft and conductive micro devices represents a demanding research topic in various biomedical applications, particularly organic bioelectronics. Among various fabrication methods, two-photon polymerization (2PP) using a wide range of photocurable inks is a promising 3D printing technique for construction of structures in submicron resolution. Herein, we introduce a novel conductive photosensitive resin by using poly (3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) and poly(ethylene glycol) diacrylate), and fabricate 3D conductive polymeric microstructures via 2PP. In the developed resin, presence of PEDOT:PSS significantly enhances the electrical conductivity of microstructures (~ 10 orders of magnitude).Clinical Relevance- Conductive microdevices based on the PEDOT:PSS-doped resin open new avenues in a broad range of biomedical research areas including neural interfaces, biosensors, and bioelectronics.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Bridged Bicyclo Compounds, Heterocyclic*
  • Electric Conductivity
  • Lasers
  • Polymers
  • Printing, Three-Dimensional*

Substances

  • Bridged Bicyclo Compounds, Heterocyclic
  • Polymers