Auxetic mechanical metamaterials and their futuristic developments: A state-of-art review

Materials Today Communications, Journal Year: 2022, Volume and Issue: 34, P. 105285 - 105285

Published: Dec. 29, 2022

Language: Английский

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Biomaterials for Drug Delivery and Human Applications

Materials, Journal Year: 2024, Volume and Issue: 17(2), P. 456 - 456

Published: Jan. 18, 2024

Biomaterials embody a groundbreaking paradigm shift in the field of drug delivery and human applications. Their versatility adaptability have not only enriched therapeutic outcomes but also significantly reduced burden adverse effects. This work serves as comprehensive overview biomaterials, with particular emphasis on their pivotal role delivery, classifying them terms biobased, biodegradable, biocompatible nature, highlighting characteristics advantages. The examination delves into extensive array applications for biomaterials encompassing diverse medical fields such cancer therapy, cardiovascular diseases, neurological disorders, vaccination. explores actual challenges within this domain, including potential toxicity complexity manufacturing processes. These emphasize necessity thorough research continuous development regulatory frameworks. second aim review is to navigate through compelling terrain recent advances prospects envisioning healthcare landscape where they empower precise, targeted, personalized delivery. transform staggering, promise treatments tailored individual patient needs, offering hope improved efficacy, fewer side effects, brighter future practice.

Language: Английский

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Mechanically Programmable Composite Metamaterials with Switchable Positive/Negative Poisson's Ratio

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(22)

Published: Feb. 5, 2024

Abstract Design of mechanical metamaterials with a negative Poisson's ratio (NPR), known as auxetics, is great importance in the development flexible electronics and tissue engineering. However, performance conventional auxetic largely hindered by high porosity lack tunability, which restricts their practical engineering applications. Here, this study presents programmable approach for designing integrated two‐phase composite pore‐free structure, robust interfaces, customized properties substituting vacancy lattices (frame phase) hydrogel‐based soft fillers (matrix phase). Manipulated stiffness contrast, exhibit functional transition between non‐auxetic behaviors. Rationally Young's modulus ratios spatial domains endows programming desired heterogeneity. Furthermore, incorporation temperature‐responsive hydrogels to frames also enbles dynamic composites thermo‐driven adaptability. As application demonstration, designed are used dynamically tune phononic bandgaps. The design strategy paves way advanced materials properties, providing opportunity conformal electronic patches, bio‐scaffolds, smart functionality

Language: Английский

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Auxetic metamaterials for bone-implanted medical devices: Recent advances and new perspectives

European Journal of Mechanics - A/Solids, Journal Year: 2022, Volume and Issue: 98, P. 104905 - 104905

Published: Dec. 24, 2022

Language: Английский

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Mechanical metamaterials

Reports on Progress in Physics, Journal Year: 2023, Volume and Issue: 86(9), P. 094501 - 094501

Published: June 22, 2023

Abstract Mechanical metamaterials, also known as architected materials, are rationally designed composites, aiming at elastic behaviors and effective mechanical properties beyond (‘meta’) those of their individual ingredients—qualitatively and/or quantitatively. Due to advances in computational science manufacturing, this field has progressed considerably throughout the last decade. Here, we review its mathematical basis spirit a tutorial, summarize conceptual well experimental state-of-the-art. This summary comprises disordered, periodic, quasi-periodic, graded anisotropic functional architectures, one, two, three dimensions, covering length scales ranging from below one micrometer tens meters. Examples include extreme ordinary linear behavior artificial crystals, e.g. auxetics pentamodes, ‘negative’ properties, classical elasticity, arising local resonances, chirality, beyond-nearest-neighbor interactions, quasi-crystalline topological band gaps, cloaking based on coordinate transformations scattering cancelation, seismic protection, nonlinear programmable space-time-periodic architectures.

Language: Английский

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Orthopedic meta-implants

APL Bioengineering, Journal Year: 2024, Volume and Issue: 8(1)

Published: Jan. 19, 2024

Meta-biomaterials, engineered materials with distinctive combinations of mechanical, physical, and biological properties stemming from their micro-architecture, have emerged as a promising domain within biomedical engineering. Correspondingly, meta-implants, which serve the device counterparts meta-biomaterials, offer exceptional functionalities, holding great potential for addressing complex skeletal diseases. This paper presents comprehensive overview various types including hybrid, shape-morphing, metallic clay, deployable highlighting unprecedented recent achievement in field. also delves into future developments exploration multi-functionalities meta-biomaterials applications diverse fields.

Language: Английский

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Advances in additive manufacturing of auxetic structures for biomedical applications

Materials Today Communications, Journal Year: 2024, Volume and Issue: 40, P. 110045 - 110045

Published: Aug. 1, 2024

Auxetic structures, a class of metamaterials, exhibit unique negative Poisson's ratio behavior. Their mechanical properties demonstrate considerable potential for applications in biomedical engineering. Recent advances additive manufacturing have facilitated the production net-shape components with complex geometric designs, including auxetic structures. This review paper explores methods used elucidates their properties, and gives an overview over most recent developments related to context devices. It also critically assesses surface treatment that may be applicable enhancing biocompatibility as well antimicrobial protection.

Language: Английский

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Machine learning for bending behavior of sandwich beams with 3D‐printed core and natural fiber‐reinforced composite face sheets

Polymer Composites, Journal Year: 2024, Volume and Issue: 45(4), P. 3043 - 3054

Published: Jan. 17, 2024

Abstract The primary objective of this study was to demonstrate the effectiveness machine learning (ML) in predicting mechanical behavior sandwich structures. To achieve this, focused on assessing bending response environmentally friendly beams consisting auxetic cores made from polylactic acid (PLA) and flax/epoxy composite face sheets reinforced with halloysite nanotubes (HNTs). Two ML techniques, specifically shallow neural networks (SNNs) deep (DNNs), were employed predict specific energy absorption (SEA) load‐deflection curves these beams, respectively. key design parameters under consideration included HNT content three geometric characteristics cells. Subsequently, 16 distinct specimens meticulously designed for manufacturing, following Taguchi's experimental principles. structures produced using 3D printing while fabricated a hand layup process. These prepared then subjected three‐point test, collected data train aforementioned networks. outcomes revealed that an SNN single hidden layer comprising seven neurons effectively predicted SEA across various parameter values. Additionally, remarkable performance DNN, five layers 128, 64, 32, 16, 8 units, respectively, demonstrated by comparing its results randomly beam. Highlights techniques used beams. flax/epoxy/HNT 3D‐printed core. successfully DNN curves. cells significantly impacted properties.

Language: Английский

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Recent Advancements in Morphing Applications: Architecture, Artificial Intelligence Integration, Challenges, and Future Trends- A Comprehensive Survey

Aerospace Science and Technology, Journal Year: 2025, Volume and Issue: 161, P. 110102 - 110102

Published: Feb. 26, 2025

Language: Английский

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Three-dimensional Mathematical Solution of Static and Free Vibration of Graphene Origami-enabled Auxetic Metamaterial Thick Plates

Physica B Condensed Matter, Journal Year: 2025, Volume and Issue: unknown, P. 417162 - 417162

Published: March 1, 2025

Language: Английский

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