Publications associées à Magnetic helical micromachines: Fabrication, controlled swimming, and cargo transport

Identification of the trade-off between speed and efficiency in undulatory swimming using a bio-inspired robot

Auke Ijspeert, Laura Isabel Paez Coy, Kamilo Andres Melo Becerra, Karen Ann J Mulleners, Alexandros Anastasiadis, Eric Daniel Tytell

Anguilliform swimmers, like eels or lampreys, are highly efficient swimmers. Key to understanding their performances is the relationship between the body’s kinematics and resulting swimming speed and efficiency. But, we cannot prescribe kinematics to livin ...

Nature Research2023

SmartSwim: A novel approach to swimming analysis and coaching assistance based on wearable inertial sensors

Mahdi Hamidi Rad

As one of the three most popular sports in the Summer Olympics, competitive swimming has always been an attractive subject of study for sports scientists. The intricate nature of the swimmer's movements and the variety of techniques have led coaches to req ...

EPFL2022

An experimental validation of the polynomial curvature model: identification and optimal control of a soft underwater tentacle

Nana Obayashi, Josephine Anna Eleanor Hughes, Francesco Stella

The control possibilities for soft robots have long been hindered by the lack of accurate yet computationally treatable dynamic models of soft structures. Polynomial curvature models propose a solution to this quest for continuum slender structures. Nevert ...

Institute of Electrical and Electronics Engineers Inc.2022

Chemical Cell Surface Modification and Analysis of Nanoparticle-Modified Living Cells

Harm-Anton Klok, Tanja Thomsen

Cells are promising as carriers that can enhance the delivery of nanomedicines. Cells that carry nanomedicinal cargo, either immobilized on the cell surface or internalized, can allow for highly specific delivery and can enable the transport of nanomedicin ...

AMER CHEMICAL SOC2021

Emergence of robust self-organized undulatory swimming based on local hydrodynamic force sensing

Auke Ijspeert, Robin Thandiackal, Laura Isabel Paez Coy, Kamilo Andres Melo Becerra, Kyoichi Akiyama

Undulatory swimming represents an ideal behavior to investigate locomotion control and the role of the underlying central and peripheral components in the spinal cord. Many vertebrate swimmers have central pattern generators and local pressure-sensitive re ...

AMER ASSOC ADVANCEMENT SCIENCE2021

Bio-Inspired Tensegrity Fish Robot

Dario Floreano, Jun Shintake, Timothée John Martin Peter, Davide Zappetti, Yusuke Ikemoto

This paper presents a method to create fish-like robots with tensegrity systems and describes a prototype modeled on the body shape of the rainbow trout with a length of 400 mm and a mass of 102 g that is driven by a waterproof servomotor. The structure of ...

IEEE2020

The Hydrodynamics of a Micro-Rocket Propelled by a Deformable Bubble

François Gallaire, Giacomo Gallino, Lailai Zhu

We perform simulations to study the hydrodynamics of a conical-shaped swimming micro-robot that ejects catalytically produced bubbles from its inside. We underline the nontrivial dependency of the swimming velocity on the bubble deformability and on the ge ...

2019

RoboScallop: A Bivalve Inspired Swimming Robot

Jamie Paik, Matthew Aaron Robertson

Underwater swimming robots permit remote access to over 70% of the Earth's surface that is covered in water for a variety of scientific, environmental, tactical, or industrial purposes. Many practical applications for robots in this setting include sensing ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

An Isoprene Lipid-Binding Protein Promotes Eukaryotic Coenzyme Q Biosynthesis

Matteo Dal Peraro, Deniz Aydin

The biosynthesis of coenzyme Q presents a paradigm for how cells surmount hydrophobic barriers in lipid biology. In eukaryotes, CoQ precursors-among nature's most hydrophobic molecules-must somehow be presented to a series of enzymes peripherally associate ...

CELL PRESS2019

On the Dynamics of Magnetic Swimmers in Stokes Flow

Pauline Marie Rüegg-Reymond

In the past decade, the engineering community has conceived, manufactured and tested micro-swimmers, i.e. microscopic devices which can be steered in their intended environment. Foreseen applications range from microsurgery and targeted drug delivery to en ...

EPFL2019

Foldable aircraft with protective cage for transportation and transportability

Dario Floreano, Przemyslaw Mariusz Kornatowski, Stefano Mintchev

An aerial vehicle, configured to transport cargo, and including a propulsion system and a foldable cage is described. The foldable cage is substantially linear while in a folded configuration, and substantially circular while in a deployed configuration. M ...

2017

Front-crawl stroke descriptors variability assessment for skill characterisation

Kamiar Aminian, Farzin Dadashi, Grégoire Millet

The goal of this article is to character ise front-crawl swimming skill based on variability pattern of technique descriptors. Nine national level and nine recreational swimmers performed three 300 m trials in a 50 m outdoor pool, at 70%, 80% and 90% of th ...

Taylor & Francis2016

Soft micromachines with programmable motility and morphology

Mahmut Selman Sakar

Nature provides a wide range of inspiration for building mobile micromachines that can navigate through confined heterogenous environments and perform minimally invasive environmental and biomedical operations. For example, microstructures fabricated in th ...

Nature Research2016

Wave-reducing Stern Flap on Ship Convoys to Protect Riverbanks

Giovanni De Cesare, Anton Schleiss, Robin Amacher, Théodora Cohen Liechti, Michael Pfister

Inland navigable waterways are significant in cargo transport and leisure activities. In parallel, these channels and rivers often suffer from the ship traffic, as the generated waves may damage waterway banks, along with their riparian fauna. As a consequ ...

Amer Soc Naval Eng Inc2015

Improved Lighthill fish swimming model for bio-inspired robots: Modeling, computational aspects and experimental comparisons

Auke Ijspeert, Mathieu Porez

The best known analytical model of swimming was originally developed by Lighthill and is known as the large amplitude elongated body theory (LAEBT). Recently, this theory has been improved and adapted to robotics through a series of studies ranging from hy ...

Sage Publications Ltd2014

Exact and Heuristic Methods to Solve the Berth Allocation Problem in Bulk Ports

Michel Bierlaire, Ilaria Vacca, Nitish Umang

In this paper, we study the dynamic hybrid berth allocation problem in bulk ports with the objective to minimize the total service times of the vessels. We propose two exact methods based on mixed integer progra mming and generalized set partitionin g, and ...

Pergamon-Elsevier Science Ltd2013

A wearable system for monitoring the velocity variability in open water swimming and triathlon

Kamiar Aminian, Farzin Dadashi, Grégoire Millet

Pacing tactics in the swimming bout notably influences the overall triathlon performance. Besides, the swimming velocity affects the energy expenditure (EE). Based on our previous works to estimate the swimming velocity, here we propose a system to measure ...

2013

Enhanced N-nitrosamine formation in pool water by UV irradiation of chlorinated secondary amines in the presence of monochloramine

Silvio Canonica, Urs von Gunten, Minju Lee

N-Nitrosamines, in particular N-nitrosodimethylamine (NDMA), are carcinogens, which occur as chlorine disinfection by-products (DBPs) in swimming pools and hot tubs. UV treatment is a commonly used technique in swimming pools for disinfection and DBP atten ...

Elsevier2013

Vesicle Photonics

Jeffrey Alan Hubbell, Demetri Psaltis, Andreas Vasdekis, Sylvie Roke

Amphiphiles, under appropriate conditions, can self-assemble into nanoscale thin membrane vessels (vesicles) that encapsulate and hence protect and transportmolecular payloads.Vesicles assemble naturally within cells but can also be artificially synthesize ...

Annual Reviews2013

Inertial measurement unit and biomechanical analysis of swimming: an update

Kamiar Aminian, Farzin Dadashi, Grégoire Millet

The biomechanical analysis of swimming always faced impeding factors of measurement in the aquatic environment. Our current knowledge of swimming locomotion is very much owing to employing video cameras to capture the body kinematics. Nevertheless, the rec ...

2013