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May 21, 2026Advanced Intelligent SystemsOpen Access

One‐Shot Multimaterial 3D Printing of a Flexible Spine for a Robotic Fish Prototype

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Authors

MCMarco CollettaAPAlessio PricciLLLuca DI LEO

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Overview

Randomized trial demonstrates improved actuation performance in robotic fish, highlighting efficient fabrication methods.

Key Points

  • This research aims to improve the design and functionality of bioinspired robotic swimmers using advanced 3D printing techniques.
  • Developed a multimaterial 3D printing method integrating PLA and TPU into a soft robotic fish spine.
  • Evaluated three TPU grades (80A, 85A, 95A) for actuation performance.
  • Conducted underwater tests measuring tail-tip oscillation across various actuation frequencies.
  • TPU 85A prototype displayed the highest tail-tip deflection with a 46.67% reduction in required actuation voltage.
  • Power consumption decreased by 67.25%, and temperature rise reduced by 47.68% during tests.
  • Tail-tip oscillation speed improved by 2.85× at higher actuation frequencies.

Cite This Study

Colletta et al. (2026) studied this question.

synapsesocial.com/papers/6a0ea127be05d6e3efb5f9f6https://doi.org/10.1002/aisy.70431
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1A Soft Robotic Fish With a Dielectric Elastomer Actuator Body and Negative Stiffness Spine2026 · 1 citations
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  4. 4SpineWave: Harnessing Fish Spinal Kinematics in Biomimetic Robotics for Enhanced Aquatic Exploration2024
  5. 5SpineWave: Harnessing Fish Rigid–Flexible Spinal Kinematics for Enhancing Biomimetic Robotic Locomotion2026 · 3 citations