A scalable, lithography-less fabrication process for generating a bioinspired, multi-scale channel network in polymers

Prasoon Kumar, Tanveer Ul Islam, Mainak Majumder, Prasanna S. Gandhi

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1 Citation (Scopus)


Multi-scale fractal morphology communicating with nanoscale phenomena is commonly observed in nature in several applications, including leaves, fish gills, respiratory systems, and so on. Recent investigations of the bio-mimicking of these morphologies confirm their effectiveness in several bioapplications, including heat and mass transfer, tissue engineering, capillary pumps, and self-healing materials. Ascalable, lithography-less process of fabricating such fractal channels in micro/meso sizes connected to a vascular nano-network is proposed here. A recently developed, novel method for ultrafast fabrication of fractal microstructures is integrated with an electrospun nanofibrous network to form sacrificial core structures. These structures are embedded in a thin PDM S matrix and channel networks are generated by removal of sacrificial elements using solvents. Eventually, these structures are characterized and preliminary studies demonstrate their effectiveness in mass transport applications.

Original languageEnglish
Article number045007
Number of pages10
JournalBiomedical Physics and Engineering Express
Issue number4
Publication statusPublished - 29 Jun 2017


  • Channel networks
  • Electrospinning
  • Hele-Shaw cell
  • Multi-scale
  • Nature-inspired
  • Sacrificial

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