George Lauder

@georgelauder

Prof. at Harvard University: research on fish biorobotics, biomimetics, biomechanics, morphology, shark locomotion and skin function

Cambridge Mass
Vrijeme pridruživanja: travanj 2009.

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  1. Prikvačeni tweet
    10. sij

    New paper in Physics of Fluids showing 3D computations of fin-fin interactions in sunfish: . With Pan Han and the amazing Haibo Dong flow simulation lab. Thrust by the tail improved by over 25% with dorsal and anal fins.

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  2. 29. sij

    How do fish fins generate thrust? We made a robotic model of the bluegill sunfish pectoral fin. 3D views of fin motion and thrust produced … note the two thrust peaks, with one on the outstroke! With the Tangorra lab and .

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  3. 25. sij

    It’s time for again! This time an image of the Atlantic sharpnose shark skin surface, mid caudal fin. Notice the missing denticles and see if you can find at least 4 denticles in various stages of being replaced from below.

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  4. 21. sij

    Getting robot fish flexible tails to show fish-like motions is very challenging! Here are 4 different movement patterns (viewed from behind) that we produced to study their effect on thrust. Work with the Tangorra lab and .

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  5. 7. sij

    Four talks tomorrow at . One point of emphasis: how well do our 3D body deformation models match what we see from videos of freely-swimming tuna? Doesn't look too bad!

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  6. 7. sij

    It's lack of sleep ... not any reflection on your cool new work!

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  7. 6. sij
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  8. 6. sij

    Love "science Twitter" ... glad that folks find our tweets interesting, and I Iearn so much from everyone here.

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  9. 2. sij

    Final (4th) talk on at … our computational effort to model tuna locomotion. Tuna tails and more in whole-fish 3D models! Collaborative research with Haibo Dong’s flow simulation group and .

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  10. 31. pro 2019.

    An autonomous ? Yes! Learn about tuna at and the challenges and opportunities designing an autonomous tuna-like robotic platform (tuna robotics talk #3). With Joe Zhu from .

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  11. 29. pro 2019.

    Thanks for tweeting this ... one of my favorite videos, done by when he was a grad student in the lab with David Beal. Still lots of research being done on propulsion in drag and thrust wakes!

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  12. 29. pro 2019.

    Our second talk on at … the improved tunabot designed by Carl White . Much better swimming performance (real time video), flexible body and fins, lower cost of transport than the original Tunabot!

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  13. 28. pro 2019.

    Interested in research? 4 talks in a row @sicb2020 from collaborative research with . First up, the original Tunabot … exploring the high-speed and high-frequency fish locomotor performance space with a robotic platform.

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  14. 23. pro 2019.

    Bonnethead shark swimming in the lab to study body kinematics and relative head and tail motion. Note the extent of lateral head motion, even during steady swimming! Video with back in the day.

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  15. 12. pro 2019.

    Tunabot swimming (~ 0.8 m/s) with the new design limiting tail beat amplitude (A) so all comparisons have constant A. Carl White visiting from . Cables provide power and prevent disaster!

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  16. 12. pro 2019.

    Now testing the next version of the Tunabot with Carl White visiting from . This one really moves (> 1 m/s) at the limit of my flow tank, and it’s only at 60% power! "Stealth" paint job for flow vis. Movie in next tweet.

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  17. 5. pro 2019.

    Fish robots often have rigid tails, and don’t reflect the diversity of flexible tails with control of individual fin rays in fish. This robot was used to study the effect of different movement patterns on thrust with the Tangorra lab .

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  18. 5. pro 2019.

    So excited for Diego to join us here for the next chapter in his fish research!

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  19. 29. stu 2019.

    Eel (Anguilla) locomotion does not involve much side-to-side head motion, contrary to popular belief and text illustrations of “anguilliform”motion! Beautiful increase in amplitude along the body. Lamprey and hagfish swim very differently from eels.

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  20. 25. stu 2019.

    Skate pectoral motion during swimming is mesmerizing! A movie from our fun project with showing undulatory fin movement in the little skate with a traveling “notch” that may stiffen the fin (paper at ).

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