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SUMMARY:MEchanics GAthering –MEGA- Seminar: Harnessing buckling instabil
 ities in accelerating rotating systems towards enhanced functionality
DTSTART:20231130T161500
DTEND:20231130T173000
DTSTAMP:20261005T140117Z
UID:d0f76c0bd29066e618386e940e43bff38c688e4bd98fe2cfeeefa035
CATEGORIES:Conferences - Seminars
DESCRIPTION:Eduardo Gutierrez Prieto  (FLEXLAB\, EPFL)\nAbstract:\nWe in
 vestigate the geometrically nonlinear deformation and buckling of a slende
 r elastic beam subject to time-dependent ‘fictitious’ (non-inertial) 
 forces arising from unsteady rotation. Using a rotary apparatus that accu
 rately imposes an angular acceleration around a fixed axis\, we demonstrat
 e that centrifugal and Euler forces can be combined to produce tunable str
 uctural deformation. Specifically\, using an imposed acceleration ramp\, 
 the buckling onset of a cantilevered beam can be precisely tuned and its 
 deformation direction selected. In a second configuration\, a pre-arched b
 eam can be made to snap\, on demand\, between its two stable states. We a
 lso formulate a theoretical model rooted in Euler’s elastica that ratio
 nalizes the problem and provides predictions in excellent quantitative agr
 eement with the experimental data. Our findings demonstrate an innovative
  approach to programmable actuation of slender rotating structures.\n\nBi
 ography:\nEduardo Gutierrez-Prieto has been a Ph.D. student at fleXLab in 
 EPFL since October 2021\, focusing on the mechanics of slender structures 
 subject to unsteady rotational loads\, with an interest in developing vers
 atile centrifugal microfluidics devices exploiting the non-inertial loads 
 arising from unsteady rotation. He obtained his BSc in Mech. Eng. in his h
 ometown in Spain\, from the University of Valladolid. He then worked for a
 bout two years at SEADM\, an R&D company\, developing a sub-23nm particle 
 counter based on droplet nucleation techniques to measure the emission of 
 pollutant particles from burning fossil fuels. In this project\, he stayed
  four months as an invited researcher in the APTL laboratory\, based in Th
 essaloniki\, Greece. In 2019 he joined TU Delft in the Netherlands to purs
 ue an MSc in Mech. Eng.\, specializing in fluid mechanics. There\, he focu
 sed on understanding how the beating of eukaryotic cilia naturally emerges
  from its structural composition\, and the effects of hydro/mechanic coupl
 ing in ciliar synchronization. While in the Netherlands\, he also worked a
 s an intern for Bi/ond\, a start-up developing versatile microfluidic chip
 s for organoid research.
LOCATION:MED 2 2423 https://plan.epfl.ch/?room==MED%202%202423 https://epf
 l.zoom.us/j/67432145299?pwd=RXo4dHBQaFhFbktzYVdIa2xGOEhqUT09
STATUS:CONFIRMED
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