Related Experiment Video
Updated: May 27, 2026
06:20
Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging
Published on: April 28, 2022
Flectofin: a hingeless flapping mechanism inspired by nature
J Lienhard1, S Schleicher, S Poppinga
1Institute of Building Structures and Structural Design-ITKE, University of Stuttgart, Germany.
Bioinspiration & Biomimetics
|December 1, 2011
Summary
This study introduces pliable structures using elastic deformation in fibre-reinforced polymers for architectural deployable systems. This biomimetic approach, inspired by plants, creates hingeless kinetic structures like the patented Flectofin®.
Area of Science:
- Biomimetics
- Materials Science
- Architectural Engineering
Background:
- Traditional deployable systems rely on local hinges, limiting design possibilities.
- Elastic deformation offers a novel approach to achieving kinetic movement in structures.
- Fibre-reinforced polymers (FRP) provide the necessary properties for elastic deformation.
Purpose of the Study:
- To present a novel biomimetic approach for deployable architectural systems using elastic deformation.
- To explore the abstraction of elastic kinetics from plant mechanisms.
- To introduce the patented Flectofin® principle for hingeless kinetic structures.
Main Methods:
- Biomimetic abstraction of plant kinematics, specifically the Bird-Of-Paradise flower's pollination mechanism.
- Form-finding and simulation methods to develop elastic kinetic principles.
- Utilizing fibre-reinforced polymers (FRP) like glass fibre reinforced polymer (GFRP) for calibrated elastic deformations.
Main Results:
- Development of pliable structures that achieve kinetic movement through elastic deformation, eliminating the need for hinges.
- Successful abstraction of plant-based elastic kinetics into an architectural design principle.
- Patenting of the Flectofin® bio-inspired hingeless flapping device.
Conclusions:
- Elastic deformation in FRP offers a new paradigm for designing complex, kinetic architectural deployable systems.
- Biomimicry provides effective strategies for deriving innovative engineering solutions from natural mechanisms.
- The Flectofin® principle demonstrates the potential of pliable structures in architecture.
Related Concept Videos
01:15Mechanisms of Membrane-bending
The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
01:05Mechanism of Ciliary Motion
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
01:05Mechanism of Ciliary Motion
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
01:54Convergent Evolution
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
01:39Mechanism of Filopodia Formation
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
01:25Fascicle Arrangement in Skeletal Muscles
Fascicles are bundles of muscle fibers in a skeletal muscle. Muscle fascicle arrangement is directly associated with the power and range of motion of various muscles. The configuration of these fascicles can vary, leading to different functional outcomes.
The four primary types of muscle based on fascicle arrangement are:
The four primary types of muscle based on fascicle arrangement are: