Shape memory mechanical metamaterials

Yang, Hang; D'Ambrosio, Nicholas; Liu, Peiyong; Pasini, Damiano; Ma, Li

doi:10.1016/j.mattod.2023.04.003

Cited by 41 publications

(11 citation statements)

References 93 publications

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“…A possible evolution in the fabrication of advanced nanocomposite materials is in the AI control of the physical states of hybrid circuits (solid/liquid) for intelligent adaptive micro-robot implementations. Other important properties of intelligent materials are self-healing [67][68][69][70][71][72][73][74][75][76][77][78][79][80][81] (as in polymer composites based on graphene and carbon nanotubes (CNT) and PDMS) and the shape memory effect [82][83][84][85][86][87][88] (as in ferroic nanocomposites and nanocomposite hydrogels). AI data processing could be adopted to regenerate micro-and nano-electronic circuits and to enable shape auto-adaptive actions controlling external stimuli.…”

Section: (Ket Ii) Advanced Materialsmentioning

confidence: 99%

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Massaro

2023

Electronics

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The review highlights possible research topics matching the experimental physics of matter with advances in electronics to improve the intelligent design and control of innovative smart materials. Specifically, following the European research guidelines of Key Enabling Technologies (KETs), I propose different topics suitable for project proposals and research, including advances in nanomaterials, nanocomposite materials, nanotechnology, and artificial intelligence (AI), with a focus on electronics implementation. The paper provides a new research framework addressing the study of AI driving electronic systems and design procedures to determine the physical properties of versatile materials and to control dynamically the material’s “self-reaction” when applying external stimuli. The proposed research framework allows one to ideate new circuital solutions to be integrated in intelligent embedded systems formed of materials, algorithms and circuits. The challenge of the review is to bring together different research concepts and topics regarding innovative materials to provide a research direction for possible AI applications. The discussed research topics are classified as Technology Readiness Levels (TRL) 1 and 2.

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Section: (Ket Ii) Advanced Materialsmentioning

confidence: 99%

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Massaro

2023

Electronics

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“…Shape memory polymers (SMP) have the significant advantages of shape memory processes and adjustable‐stiffness, which are widely applied in the aerospace, 1,2 medical devices, 3,4 soft robotic hands, 5,6 mechanical metamaterials, 7 and construction engineering 8 . According to the external excitation of SMP deformation, SMP could be divided into thermal deformation, 9,10 electric heating deformation, 11 magnetic driven‐deformation, 12,13 optical driven 14,15 and chemical driven 16 .…”

Section: Introductionmentioning

confidence: 99%

Preparation, shape memory properties and application research of PLA/PCL‐based shape memory polymers doped with Al₂O₃ and lignin

Liu,

Gu,

Chen

et al. 2024

J of Applied Polymer Sci

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In this paper, the influence of different material trademarks, mass ratios, the melt mass‐flow rate (MMFR) and molecular weights (MW), mold and injection temperatures, Al2O3 powder and lignin on the shape memory properties of PLA/PCL SMP material (PPSM) were then analyzed in detail by different characteristic methods. Besides, three promising applications (Origami metamaterials and variable‐stiffness grippers) are provided utilizing the PPSM doped with Al2O3/lignin. Eventually, a compensating strategy was discussed to improve the final configuration of the SMP after multi‐cycles. The shape memory recovery ratios could be improved by increasing the MMFR of PLA and the MW of PCL. The addition of 2 g‐Al2O3 could shorten the recovery time, while the addition of 2 g‐lignin could increase the thermal‐recovery force and mechanical performance. The shape memory rate under 20 g weights, initial peak forces at room and high temperatures of the origami metamaterials could reach 57%, 2027.29 N and 17.49 N, respectively. The tensile force of banding rebars could reach 150.29 N, which is promising to apply into the construction field.

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“…In contrast to inorganic foams, the utilization of elastic polymer foams as support materials for organic PCMs can endow the resultant phase-change composites with shape memory properties. This may expand the application of the phase-change composites into soft actuators and control devices. − According to the phase-transition and thermoviscoelastic theories, shape memory materials have two structural components, i.e., the reversible switching phase and permanent phase, , which can serve as adaptive programmable materials for flexible devices. , Solid–liquid PCMs can act as the reversible switching phase to drive shape memory transitions through solid–liquid phase changes. When the environmental temperature is higher than the melting temperature ( T m ) of a solid–liquid PCM, the PCM is melted to obtain a softened state, resulting in its deformation to a certain shape.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Flame-Retardant Phase-Change Composite Films Based on Polyphosphazene/Phosphorene Hybrid Foam and Paraffin Wax for Light/Heat-Dual-Actuated Shape Memory

Zhou,

Liu,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Multiactuated shape memory materials are a class of promising intelligent materials that have received great interest in the fields of self-healing, anticounterfeiting, biomedical, soft robotic, and smart thermal management applications. To obtain a light/heat-dual-actuated shape memory material for thermal management applications in fire safety, we have designed a type of halogen-free flame-retardant phase-change composite film based on polyaryloxyphosphazene (PDAP)/phosphorene (PR) hybrid foam as a support material and paraffin wax (PW) as a phase-change material (PCM). PDAP was synthesized as a flexible foam matrix through the ring-opening polymerization of hexachlorocyclotriphosphazene, followed by a substitution reaction of aryloxy groups. The porosity of the PDAP foam is improved by introducing PR nanosheets, facilitating a high latent heat capacity of the PDAP−PR/PW composite films for thermal management applications. The PDAP−PR/PW composite films can implement rapid shape recovery within 65 s in the heating process, which is much shorter than that of the corresponding film without PR nanosheets (185 s). Furthermore, the PDAP−PR/PW composite films also exhibit light-actuated shape memory behavior thanks to their good solar-tothermal energy absorption and conversion contributed by PR nanosheets as a highly effective photothermal material. More importantly, the presence of PR nanosheets imparts an excellent flame-retardant property to the PDAP−PR/PW composite films. The PDAP−PR/PW composite film can be self-extinguished within 2 s after the flame. Through an innovative integration of flexible polyphosphazene foam, PR nanosheets, and solid−liquid PCM to obtain a sensitive actuating response to light and heat, this study offers a new approach for developing multiactuated and eco-friendly flame-retardant shape memory materials to meet the requirement of applications with a requirement of fire safety in soft actuators, thermal therapy, control devices, and so on.

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Shape memory mechanical metamaterials

Cited by 41 publications

References 93 publications

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Preparation, shape memory properties and application research of PLA/PCL‐based shape memory polymers doped with Al₂O₃ and lignin

Eco-Friendly Flame-Retardant Phase-Change Composite Films Based on Polyphosphazene/Phosphorene Hybrid Foam and Paraffin Wax for Light/Heat-Dual-Actuated Shape Memory

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Shape memory mechanical metamaterials

Cited by 41 publications

References 93 publications

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Preparation, shape memory properties and application research of PLA/PCL‐based shape memory polymers doped with Al2O3 and lignin

Eco-Friendly Flame-Retardant Phase-Change Composite Films Based on Polyphosphazene/Phosphorene Hybrid Foam and Paraffin Wax for Light/Heat-Dual-Actuated Shape Memory

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Preparation, shape memory properties and application research of PLA/PCL‐based shape memory polymers doped with Al₂O₃ and lignin