albertocomoretto.bsky.social
PhD student in the Soft Robotic Matter Group at AMOLF.
I research squishy machines and autonomous matter 🦠 🤖
Inflatables 🎈 fluidics 🫧 mechanical instabilities ⛓️💥 and self-oscillators 🌀
https://www.albertocomoretto.com/
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(6/6) 🧪 ⚛️
In the past few years, playing with these devices taught me that seemingly simple objects hide a great deal of complexity, ready to be explored. 🤹♂️
Thanks to co-authors Mannus Schomaker and Bas Overvelde for this fun adventure!
@amolf-nl.bsky.social
@science.org
Our group: overvelde.com
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(5/6)
Robots with coupled limbs display responsive behaviors: they autonomously avoid obstacles and even change locomotion gait when transitioning from ground to water, without control inputs! All of this by moving pretty fast and efficiently. 💃
(This video is in real time)
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(4/6)
By physical synchronization of multiple limbs through internal interconnections or interactions with the environment, robust and fast locomotion gaits dynamically emerge without the need for centralized processors. They go in sync even at 300 oscillations per second!
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(3/6)
The tubes become self-oscillating limbs of locomoting robots, intrinsically coordinating their (asymmetric) stepping motion!
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(2/6)
We show that a soft tube undergoes kink wave instabilities when powered with a constant stream of air. Spontaneously, kinks form, travel, and then disappear along the tube itself.
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Thank you again for the talk Kate! ✨
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Hi, could you please add me? Working on soft matter, instabilities, fluidics, ecc. Would love to be part of this!
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So, at first we got inspired by the sputtering, to obtain oscillatory activation. But sometimes it stopped oscillating, and we were puzzled, hence the follow-up paper about the coexistence. In a next study we could go back to the real ketchup bottle and investigate the original problem as well 🥸
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Amount of material in bottle does play a role. There are many variations of the valve, some sputter more than others. We manufactured our own valve, as we wanted it to oscillate. This allows controlling the movement of soft robots without electronics!
www.cell.com/matter/fullt...
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Cool observation! If we end up studying this new “boundary condition”, I will remember to acknowledge 🤝
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The model informs an updated design that removes the regulation mode, useful for pulsatile activation of implanted soft artificial hearths that shouldn’t stop beating 🫀
We hope these math tools can inspire other soft roboticists to better understand the physics of nonlinear, deformable devices 🫧🎈
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With a coupled mechanical-fluidic analytical model of the ketchup valve, we explain the coexistence of two dynamic modes (pressure oscillation and regulation) given the same boundary conditions. We also dive into studying their stability 🌀
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Thank you!
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Hi @physgal.bsky.social, I’m carrying out my PhD at @amolf-nl.bsky.social physics institute. Working on autonomous matter and mechanical instabilities, and generally interested in soft condensed matter physics. Could you please add me to the list? amolf.nl/people/alber...