A New Polymer-Based Mechanical Metamaterial with Tailorable Large Negative Poisson’s Ratios

Gao, Shanshi; Liu, Weidong; Zhang, Liangchi; Gain, Asit Kumar

doi:10.3390/polym12071492

Cited by 21 publications

(11 citation statements)

References 44 publications

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“…SLA was shown to be beneficial in producing cylindrical NPR structures with close dimensional tolerances and intricate geometries [125]. Similarly, mechanical metamaterial-based cylindrical shells prepared using SLA exhibited larger NPRs and lower stress concentration factors as compared to conventional re-entrant materials prepared through material deposition techniques [126]. SLA is extremely beneficial in the manufacture of ceramic auxetic structures with complex geometries.…”

Section: Slamentioning

confidence: 99%

On the application of additive manufacturing methods for auxetic structures: a review

2021

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Auxetic structures are a special class of structural components that exhibit a negative Poisson's ratio (NPR) because of their constituent materials, internal microstructure, or structural geometry. To realize such structures, specialized manufacturing processes are required to achieve a dimensional accuracy, reduction of material wastage, and a quicker fabrication. Hence, additive manufacturing (AM) techniques play a pivotal role in this context. AM is a layer-wise manufacturing process and builds the structure as per the designed geometry with appreciable precision and accuracy. Hence, it is extremely beneficial to fabricate auxetic structures using AM, which is otherwise a tedious and expensive task. In this study, a detailed discussion of the various AM techniques used in the fabrication of auxetic structures is presented. The advancements and advantages put forward by the AM domain have offered a plethora of opportunities for the fabrication and development of unconventional structures. Therefore, the authors have attempted to provide a meaningful encapsulation and a detailed discussion of the most recent of such advancements pertaining to auxetic structures. The article opens with a brief history of the growth of auxetic materials and later auxetic structures. Subsequently, discussions centering on the different AM techniques employed for the realization of auxetic structures are conducted. The basic principle, advantages, and disadvantages of these processes are discussed to provide an in-depth understanding of the current level of research. Furthermore, the performance of some of the prominent auxetic structures realized through these methods is discussed to compare their benefits and shortcomings. In addition, the influences of geometric and process parameters on such structures are evaluated through a comprehensive review to assess their feasibility for the latermentioned applications. Finally, valuable insights into the applications, limitations, and prospects of AM for auxetic structures are provided to enable the readers to gauge the vitality of such manufacturing as a production method.

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Section: Slamentioning

confidence: 99%

On the application of additive manufacturing methods for auxetic structures: a review

2021

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“…In this context, Montgomery et al [133] developed a magneticmechanical micro/nano-scaled metamaterial with tunable properties. Under the application of opposite magnetic fields, the shape of this material changed dramatically, which led to [123,124] Copyright 2022, Wiley-VCH. Copyright 2022, MDPI.…”

Section: Acoustic Applicationsmentioning

confidence: 99%

mentioning

confidence: 99%

3D‐Printed Micro/Nano‐Scaled Mechanical Metamaterials: Fundamentals, Technologies, Progress, Applications, and Challenges

Chen

Zhang

et al. 2023

Small

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Micro/nano‐scaled mechanical metamaterials have attracted extensive attention in various fields attributed to their superior properties benefiting from their rationally designed micro/nano‐structures. As one of the most advanced technologies in the 21st century, additive manufacturing (3D printing) opens an easier and faster path for fabricating micro/nano‐scaled mechanical metamaterials with complex structures. Here, the size effect of metamaterials at micro/nano scales is introduced first. Then, the additive manufacturing technologies to fabricate mechanical metamaterials at micro/nano scales are introduced. The latest research progress on micro/nano‐scaled mechanical metamaterials is also reviewed according to the type of materials. In addition, the structural and functional applications of micro/nano‐scaled mechanical metamaterials are further summarized. Finally, the challenges, including advanced 3D printing technologies, novel material development, and innovative structural design, for micro/nano‐scaled mechanical metamaterials are discussed, and future perspectives are provided. The review aims to provide insight into the research and development of 3D‐printed micro/nano‐scaled mechanical metamaterials.

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“…With the booming development of artificial composite structures, a type of periodic structure, metamaterial, has attracted increasing attention. A large number of properties that cannot find in nature, such as negative modulus [1,2], negative effective density [3,4], and negative Poisson's ratio [5], to name a few, can be observed in metamaterials, which contribute to many fields, such as vibration suppression [6], cloaking [7], wave filter [8], etc. In particular, the local resonance (LR) effect endows metamaterials with the ability to manipulate subwavelength waves, making them have great potential to suppress low-frequency vibrations.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric metamaterial with self-tuning resonant shunt circuits

Jian

Shen

Tang

et al. 2023

Active and Passive Smart Structures and Integrated Systems XVII

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The bandgap generated in piezoelectric metamaterials with resonant shunt circuits unveils a great potential for vibration control. This paper presents a piezoelectric metamaterial with the capability of broadband vibration attenuation by adaptive bandgap tuning. Unlike the widely used synthetic impedance circuit, a self-tuning resonant shunt circuit by integrating a microcontroller-driven digital potentiometer into the synthetic inductor circuit is developed to achieve the bandgap adjustment of the piezoelectric metamaterial. Specifically, the excitation frequency is detected by the microcontroller, and the synthetic inductance in the resonant shunt circuit is adjusted in real-time based on a given criterion. An experimental study is conducted to demonstrate the dynamic behavior and vibration suppression performance of the developed piezoelectric metamaterial. The results confirm that the self-tuning resonant shunt circuit can rapidly respond to frequency-varying vibration sources and endow the piezoelectric metamaterial with an extremely wide vibration attenuation region.

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A New Polymer-Based Mechanical Metamaterial with Tailorable Large Negative Poisson’s Ratios

Cited by 21 publications

References 44 publications

On the application of additive manufacturing methods for auxetic structures: a review

On the application of additive manufacturing methods for auxetic structures: a review

3D‐Printed Micro/Nano‐Scaled Mechanical Metamaterials: Fundamentals, Technologies, Progress, Applications, and Challenges

Piezoelectric metamaterial with self-tuning resonant shunt circuits

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