Magnetic Morphing Sheets for Reprogrammable Folding Sequences
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Solution Overview
Problem
Existing programmable matter systems lack execution-time versatility, as the morphing transformations are determined upon fabrication and cannot be reprogrammed to achieve different configurations as needed.
Innovation Solution
A reprogrammable matter system using origami-inspired fabrication for self-assembly and repeated self-reconfiguration, where a magnetic program is written onto a thin laminate and controlled with a localized external magnetic field to fold the sheet into various 3D structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the morphing transformation is determined upon fabrication, then the system achieves structural stability and manufacturing simplicity, but the system loses execution-time versatility and cannot be reprogrammed for different configurations
Solution Approach 1:
The substrate sheet is divided into multiple independently controllable regions with distinct magnetic patterns. Each region can be individually actuated by applying magnetic fields in specific directions, allowing the system to achieve multiple configurations by selectively activating different segments rather than requiring complete system redesign.
Solution Approach 2:
The system changes the magnetic field parameters (direction, strength, distribution) to control the morphology of the substrate sheet. By varying these magnetic parameters dynamically, the same physical structure can transform into different configurations without changing the physical structure itself, thus achieving versatility without proportional increase in device complexity.
2Adaptability or versatility
If multiple folding sequences are supported, then the system achieves enhanced versatility and reprogrammability, but the system increases in complexity requiring magnetic programming capability
Solution Approach 1:
Magnetic patterns are pre-programmed into the substrate sheet during fabrication, encoding multiple folding sequences in advance. This preliminary encoding allows the system to store multiple configuration instructions within the material itself, enabling versatile reconfiguration without requiring complex real-time control systems or post-fabrication modifications.
Solution Approach 2:
The magnetic patterns serve as information copies that can be rewritten or reconfigured. By using magnetic fields to write different patterns onto the substrate, multiple folding sequences are stored as reversible magnetic states, allowing the same physical substrate to embody different structural instructions without physical modification.
3Loss of substance
If the same sheet is reused and refolded into multiple shapes, then material efficiency and recyclability improve, but the system requires precise magnetic control for repeated transformations
Solution Approach 1:
The substrate sheet performs self-folding through magnetic actuation without requiring external mechanical manipulation or additional actuating components. The magnetic patterns embedded in the material generate internal forces that automatically fold the sheet into desired configurations, enabling repeated transformations while maintaining precision and reducing wear on external mechanisms.
Solution Approach 2:
Traditional mechanical folding mechanisms (hinges, joints, external actuators) are replaced with magnetic field-based actuation. This substitution eliminates mechanical wear and friction, allowing the substrate to be folded and unfolded repeatedly with consistent precision, thereby improving reliability for repeated transformations while enhancing material recyclability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time, on-demand shape changes and supports multiple folding sequences, allowing the same sheet to be reprogrammed and refolded into new structures, enhancing versatility and recyclability.
Implementation Method 1
applying a magnetic field from a magnetic field source to a magnetizable substrate sheet that is in a first configuration
Implementation Method 2
the magnetic field rotating the first rotatable element as to convert the magnetizable substate sheet to a second configuration
Implementation Method 3
the first magnetic pattern comprising a region of a first magnetic polarity, the second magnetic pattern comprising a second magnetic polarity, and the second element optionally being rotatable
Data Source
AI summary
A method, comprising: applying a magnetic field to a magnetizable substrate sheet, the magnetizable substrate sheet comprising a first rotatable element, the magnetic field rotating the first rotatable element as to convert the magnetizable substate sheet to a second configuration in which second configuration the first rotatable element magnetically affixes to a second element of the magnetizable substrate sheet. A component, comprising: a plurality of articulable segments arranged circumferentially so as to define a first collapsable frustum and a second collapsable frustrum, the first collapsable frustum and the second collapsable frustum extending away from their respective bases and converging toward one another, the first collapsable and second collapsable frustum converging at a plane and the component defining therein an opening at the plane, the component configured such that the first and second collapsable frustrum are collapsable toward one another so as to attain one or more stable collapse states.