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Proposal Number: 6722

Domain: Manufacturing

Theme(s): Additive Manufacturing Processes
Precision and Ultra Precision Manufacturing

Supporting Central Government Agency: Department of Science and Technology

Budget (Rs. Lakhs): 395.39

Principal Investigator: Prasanna S. Gandhi

Principal Investigator Institute: Indian Institute of Technology, Bombay

Co-Investigators:
Milind Atrey ,Indian Institute of Technology Bombay
Amitabh Bhattacharya ,Indian Institute of Technology, Bombay
Abhijit Majumdar ,Indian Institute of Technology, Bombay
Dhananjaya Dendukuri ,Achira Labs,

Domain: Manufacturing

Project Title

Development of Technology and Machine for Controlled Spontaneous Manufacturing of Multi-scale Fractal Structures using Fluid Instabilities for Biomimetic and other Applications

Project Images

Image Caption:Basic process of fabrication in a lifted Hele-Shaw cell (Pl see http://rdcu.be/mHb2)

Web Abstract

Nature, in its quest for the best designs has shaped its vital systems into fractal geometries (e.g. leaf veins, respiratory system). Recent literature indeed confirms effectiveness of these geometries in several applications including tissue engineering, heat and mass transport, non-transparent solar electrodes, and capillary pumping, among others. This project proposes to develop technology and prototype (manual and automated) of a machine that can manufacture 2.5 dimensional fractal patterns spanning micron, millimeter, centimeter, and possibly meter scales in a matter of a few seconds. We propose to use Saffman-Taylor instability in lifted Hele-Shaw cell for the same. The novelty here (patent pending) is in developing high degree of control over otherwise random spontaneous formations, by using anisotropy on the cell plate, and further, by retaining their formed geometry. Applications in low cost diagnostics platform and platform for chemotaxis would be developed.