Directed biogenic fabrication : programming cells and their ecosystems to grow civil infrastructure

Abstract

This thesis introduces and evaluates directed biogenic fabrication: a philosophical approach and technical framework for co-fabricating ecologically active civil infrastructure with living cells. I propose that imbuing our buildings and urban systems with life, or at least biologic capabilities, will enable tight interconnections between fundamental species occupying different infrastructural niches, resulting in urban ecosystems that develop and evolve closed-loop resource cycles and equilibrate our atmosphere. As a proof of concept for this generalizable approach, I cover three strategies demonstrating specific tools, techniques, and assessment methods for designing elements of a living infrastructure: (1) Programmable Surface Features and Hydrophilicity -utilizing organic chemistry, computational design, and digital fabrication to engender particular mechanical properties and responsiveness in biopolymer materials; Communication Ecology-templating visual and conformational signals in biopolymer materials that communicate information about the environment to other organisms; and Opportunistic Chimeric Design-exploiting and co-opting the most powerful capabilities evolution has produced in order to grow infrastructural lifeforms. The first two methods are exemplified through two architectural scale pavilions -Aguahoja I and II-while the third is shown through a series of prototypical materials synthesized by two types of bone cancer cells. This thesis makes contributions to the fields of materials science, biological engineering, civil engineering, digital fabrication, and computational design..