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SUMMARY:Nature-inspired\, lithography-less\, spontaneous\, multi-scale man
 ufacturing of fluidic networks
DTSTART:20170707T140000
DTEND:20170707T153000
DTSTAMP:20260509T054402Z
UID:9d2d4adc562fa5582a76ce6ea05a80a57ac8fcbd11212aa673fcc336
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Prasanna Gandhi\nThe pursuit of mimicking complex biolog
 ical systems has been a tireless effort with many successes but a daunting
  task ahead. A new perspective to engineer the very evident branched/tree-
 like shapes and intricate web of microfluidic channel in bio-systems is pr
 esented here. These structures are established to be more effective in the
  literature for mass transport applications. Control over Saffman-Taylor i
 nstability which otherwise randomly rearranges viscous fluid in a ’lifte
 d Hele-Shaw cell’ is exercised for the same. The proposed control employ
 s  anisotropies on cell plates\, to shape a stretched fluid film into a n
 etwork of ordered multiscale tree-like patterns and well defined webs/mesh
 es mimicking various bio-systems.\n\nThe proposed control produces in a ro
 bust and repeated fashion\, structures which otherwise are completely non-
 characteristic to this process. Moreover spontaneous fabrication of famili
 es of wide variety of structures can be done over micro and very large sca
 le in a period of few seconds. Thus the proposed method forms a solid foun
 dation to a new pathway for engineering mulitscale structures for several 
 scientific applications including microfluidics\, biomimicking\, solar ele
 ctroding\, etc.\n\nThe pursuit of mimicking complex biological systems has
  been a tireless effort with many successes but a daunting task ahead. A n
 ew perspective to engineer the very evident branched/tree-like shapes and 
 intricate web of microfluidic channel in bio-systems is presented here. Th
 ese structures are established to be more effective in the literature for 
 mass transport applications. Control over Saffman-Taylor instability which
  otherwise randomly rearranges viscous fluid in a ’lifted Hele-Shaw cell
 ’ is exercised for the same. The proposed control employs  anisotropies
  on cell plates\, to shape a stretched fluid film into a network of ordere
 d multiscale tree-like patterns and well defined webs/meshes mimicking var
 ious bio-systems.\n\nThe proposed control produces in a robust and repeate
 d fashion\, structures which otherwise are completely non-characteristic t
 o this process. Moreover spontaneous fabrication of families of wide varie
 ty of structures can be done over micro and very large scale in a period o
 f few seconds. Thus the proposed method forms a solid foundation to a new 
 pathway for engineering mulitscale structures for several scientific appli
 cations including microfluidics\, biomimicking\, solar electroding\, etc.\
 n\nBio: \n \nDr Prasanna Gandhi\, Professor in mechanical engineering\, 
 is also Director of Suman Mashruwala Advanced Microengineering Laboratory.
  Prasanna’s current research focuses on the area of polymer and ceramics
  3D micro-printing\, control of fluid instabilities for Spontaneous Multis
 cale Manufacturing (SMM)\, dynamics and control of ultra flexible mechanis
 m systems for applications in micro-printing\, micro-fluidics\, medical ro
 botics\, products\, and devices. He was pioneer in setting up non-VLSI bas
 ed 3D digital microfabrication and characterisation facility in the Depart
 ment of Mechanical Engineering. He has been researching the area of 3D mic
 rofabrication technology for more than 14 years and has successfully devel
 oped in-house technologies of Microstereolithography\, Bulk lithography (B
 L)\, which have resulted in several publications and patents. More recentl
 y his group has developed a unified technology (Spontaneous Multi-scale Ma
 nufacturing (SMM)) for high-speed fabrication at multiple scales spanning 
 micro\, meso\, meter using fluid instabilities. This technology effectivel
 y produces controlled 2.5D fractal and ordered structures that can be used
  in applications such as artificial respiration\, artificial fish gill\, c
 apillary pumping\, scaffolds\, synthetic leaf\, tissue engineering and so 
 on.\nAmong other honors\, he is a recipient of 3rd rank in Mumbai universi
 ty (B.E. 2004)\, Robert Lowry Patten Award at Rice (2000)\, BOYSCAST fello
 wship (2006) of Govt of India\, Prof J.R.Issac fellowship (2006-2007)\, an
 d Best faculty award (2008). More details on his publications can be found
  at\nhttp://www.me.iitb.ac.in/faculty/33/profile/\n\n 
LOCATION:BM1.130
STATUS:CONFIRMED
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