Deployable vortex generators for low Reynolds numbers applications powered by cephalopods inspired artificial muscles

Mamman, Rabiu; Kotak, Parth; Weerakkody, Thilina; Johnson, Tatum; Krebill, Austin; Buchholz, James; Lamuta, Caterina

doi:10.1016/j.isci.2023.108369

iScience

2023

DOI: 10.1016/j.isci.2023.108369

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Deployable vortex generators for low Reynolds numbers applications powered by cephalopods inspired artificial muscles

Rabiu Mamman,

Parth Kotak,

Thilina Weerakkody

et al.

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2024

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Cited by 1 publication

References 53 publications

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Fouling Release Mechanism of an Octopus‐Inspired Smart Skin

Mamman,

Johnson,

Weerakkody

et al. 2024

Adv Funct Materials

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This work proposes an octopus‐inspired smart skin for fouling release. The skin consists of twisted spiral artificial muscles (TSAMs) embedded between two layers of elastomer. Upon electro‐thermal actuation, TSAMs undergo vertical displacement (similarly to octopus’ papillae dermal muscles) and mechanically deform the top layer of the skin where the biofilm is attached. The release is achieved by generating a critical strain on the skin's top layer. In this paper, a physics‐based mechanical model is proposed to describe the fouling release mechanism of the smart skin. The model relates the critical strain to the mechanical properties of the biofilm, as well as the mechanical and electro‐thermal properties of the TSAMs. The model is experimentally validated, and a robust controller is implemented to achieve the desired critical strain and then perform release for two different types of biofilms: bacterial‐based Escherichia coli and diatom‐based Amphora coffeaeformis.

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Fouling Release Mechanism of an Octopus‐Inspired Smart Skin

Mamman,

Johnson,

Weerakkody

et al. 2024

Adv Funct Materials

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Deployable vortex generators for low Reynolds numbers applications powered by cephalopods inspired artificial muscles

Cited by 1 publication

References 53 publications

Fouling Release Mechanism of an Octopus‐Inspired Smart Skin

Fouling Release Mechanism of an Octopus‐Inspired Smart Skin

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