Kirigami-Inspired Thermal Regulator

Ouyang, Hongyi; Gu, Yuanqing; Gao, Zhibin; Hu, Lei; Zhang, Zhen; Ren, Jie; Li, Baowen; Sun, Jun; Chen, Yan; Ding, Xiangdong

doi:10.1103/physrevapplied.19.l011001

Cited by 3 publications

(3 citation statements)

References 88 publications

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“…Substituting the equations (13a) and (13b) into equation (10) gives: ∂W = ´l 0 p ´x 0 cos θdx dx + ´l 0 q ´x 0 sin θdx dx +Fx ´l 0 cos θdx + Fȳ ´l 0 sin θdx ∂ε…”

Section: Priniciple Of Minimum Potential Energymentioning

confidence: 99%

“…In such materials, the effective properties are characterized by their structural configuration and not by their intrinsic material properties alone. We can modulate the global mechanical properties of mechanical metamaterials by controlling their microstructural geometric parameters, which can be tuned to present unprecedented novel characteristics like negative elastic moduli, auxetic characteristics, extreme multi-physical properties, meta-fluid properties, high crushing resistance, shock absorption characteristics, negative mass density, etc [1][2][3][4][5][6][7][8][9][10][11][12]. Lattice-based materials are a class of metamaterials that have a typical feature of unit cell periodicity [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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On-demand contactless programming of nonlinear elastic moduli in hard magnetic soft beam based broadband active lattice materials

Sinha

Mukhopadhyay

2023

Smart Mater. Struct.

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Engineered honeycomb lattice materials with high specific strength and stiffness along with the advantage of programmable direction-dependent mechanical tailorability are being increasingly adopted for various advanced multifunctional applications. To use these artificial microstructures with unprecedented mechanical properties in the design of different application-specific structures, it is essential to investigate the effective elastic moduli and their dependence on the microstructural geometry and the physics of deformation at the elementary level. While it is possible to have a wide range of effective mechanical properties based on their designed microstructural geometry, most of the recent advancements in this field lead to passive mechanical properties, meaning it is not possible to actively modulate the lattice-level properties after they are manufactured. Thus the on-demand control of mechanical properties is lacking, which is crucial for a range of multi-functional applications in advanced structural systems. To address this issue, we propose a new class of lattice materials wherein the beam-level multi-physical deformation behavior can be exploited as a function of external stimuli like magnetic field by considering hard magnetic soft (HMS) beams. More interestingly, effective property modulation at the lattice level would be contactless without the necessity of having a complex network of electrical circuits embedded within the microstructure. We have developed a semi-analytical model for the nonlinear effective elastic properties of such programmable lattice materials under large deformation, wherein the mechanical properties can be modulated in an expanded design space of microstructural geometry and magnetic field. The numerical results show that the effective properties can be actively modulated as a function of the magnetic field covering a wide range (including programmable state transition with on-demand positive and negative values), leading to the behavior of soft polymer to stiff metals in a single lattice microstructure according to operational demands.

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“…Substituting the equations (13a) and (13b) into equation (10) gives: ∂W = ´l 0 p ´x 0 cos θdx dx + ´l 0 q ´x 0 sin θdx dx +Fx ´l 0 cos θdx + Fȳ ´l 0 sin θdx ∂ε…”

Section: Priniciple Of Minimum Potential Energymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On-demand contactless programming of nonlinear elastic moduli in hard magnetic soft beam based broadband active lattice materials

Sinha

Mukhopadhyay

2023

Smart Mater. Struct.

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“…The strategically designed cuts and folds facilitate the creation of diverse kirigami-inspired metamaterials, which exhibit unique mechanical, [41,53,[75][76][77] thermal, [78][79][80][81] acoustic, [82][83][84] and optical [85][86][87] properties surpassing those of the original flat sheets. Here, we organize the functions of the kirigami designs into four primary categories based on their distinctive properties: high stretchability and flexibility, tunable surface topography, programmable shape morphing, and bistability and multistability (Figure 2).…”

Section: Unique Properties Of Kirigami and Their Profuse Applicationsmentioning

confidence: 99%

Engineering Kirigami Frameworks Toward Real‐World Applications

Jin,

Yang

2023

Advanced Materials

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The surge in advanced manufacturing techniques has led to a paradigm shift in the realm of material design from developing completely new chemistry to tailoring geometry within existing materials. Kirigami, evolved from a traditional cultural and artistic craft of cutting and folding, has emerged as a powerful framework that endows simple 2D sheets with unique mechanical, thermal, optical, and acoustic properties, as well as shape‐shifting capabilities. Given its flexibility, versatility, and ease of fabrication, there are significant efforts in developing kirigami algorithms to create various architectured materials for a wide range of applications. This review summarizes the fundamental mechanisms that govern the transformation of kirigami structures and elucidates how these mechanisms contribute to their distinctive properties, including high stretchability and adaptability, tunable surface topography, programmable shape morphing, and characteristics of bistability and multistability. It then highlights several promising applications enabled by the unique kirigami designs and concludes with an outlook on the future challenges and perspectives of kirigami‐inspired metamaterials toward real‐world applications.

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