A natural impact-resistant bicontinuous composite nanoparticle coating

Huang, Wei; Shishehbor, Mehdi; Guarín-Zapata, Nicolás; Kirchhofer, Nathan D.; Li, Jason; Cruz, Luz; Wang, Taifeng; Bhowmick, Sanjit; Stauffer, Douglas; Manimunda, Praveena; Bozhilov, Krassimir N.; Caldwell, Roy L.; Zavattieri, Pablo; Kisailus, David

doi:10.1038/s41563-020-0768-7

Cited by 139 publications

(123 citation statements)

References 62 publications

Supporting

Mentioning

123

Contrasting

Order By: Relevance

“…3g-i, the existing of large pores might result from the loss of broken mineral particles. Under high stress, the crystallites xed on the bers were smashed into small irregular particles 20 and exfoliated during polishing, leading to pores. We also observed bers bridging the tips of opened microcracks (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Extensive studies have been performed in the past ten years to uncover the structural optimization strategies and toughening mechanisms of the stomatopod dactyl, generating numerous characterization results, and various intrinsic and extrinsic toughening mechanisms have been derived [15][16][17][18][19][20][21] . To date, these studies already provided innovative inspirations for the manufacture of high-energy absorption and impact-resistant composite materials in industry [22][23][24] .…”

Section: Introductionmentioning

confidence: 99%

“…A second study 16 demonstrated that the chemical and microstructural variation of the mineral distribution in the tissue periphery strengthens the dactyl. Nanoindentation tests with a micrometer spatial resolution revealed graded, quasi-plastic mechanical responses in the outer region of the dactyl, including misalignment of hydroxyapatite (HAP) crystallites (sliding and rotation), and strain hardening, attributed to chitin and amorphous mineral interactions, resulting in signi cant energy dissipation by localized yielding before shear-induced circumferential cracks are nucleated 17,20 . Recently, a further experiment-based quantitative analysis demonstrated plastic dissipation at the crack tip is the main contribution to the fracture resistance, with both linear elastic fracture mechanics (LEFM) and elastic-plastic fracture mechanics (EPFM) protocols tested.…”

Section: Introductionmentioning

confidence: 99%

“…Another nanoindentation study with high-strain rates (around 10 4 s − 1 ) nanoindentation demonstrated that the toughness of its hard mineral surface consisting of highly regularly arranged nanoparticles was related to impact strain rate. The mineral coating has exceptional energy dissipation e ciency under high-strain-rate impact, and is able to localize damage and prevent crack initiation and propagation under high-speed impact 20 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

In situ determination of the extreme damage resistance behavior in stomatopod dactyl club

Zheng¹,

Chen

Gupta

et al. 2021

Preprint

View full text Add to dashboard Cite

The structure and mechanical properties of the stomatopod dactyl club have been extensively studied for its extreme impact tolerance, but a systematic, in situ, investigation on the multiscale mechanical responses under high-speed impact has not been reported. Here we reveal the full dynamic deformation and crack evolution process within projectile impacted dactyl using combined fast 2D x-ray imaging and high resolution ex-situ tomography We show hydration states can result in significantly different toughening mechanisms inside dactyl under dynamic loading. We find a previously unreported 3D interlocking structural design in the impact surface and impact region using nano x-ray tomography (nano-CT). Experimental results and dynamic finite element modeling (DFEM) suggest this unique structure plays an important role in resisting catastrophic structure damage and hindering crack propagation. Our work will help to understand the key toughening strategies of biological materials and provide valuable information for biomimetic manufacturing of impact resistant materials in general.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

In situ determination of the extreme damage resistance behavior in stomatopod dactyl club

Zheng¹,

Chen

Gupta

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Load-bearing biocomposites are typically structured as arrays of rigid and predominantly elastic reinforcing elements (e.g., biominerals or crystalline biopolymers), which are connected by a more compliant and energy-dissipating matrix material (e.g., proteins or hemicellulose) through submicron length, compositionally graded, and irregularly-shaped interfacial regions [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. The effective dynamic (viscoelastic) modulus of these interfacial regions provides the biocomposites’ diverse mechanical functions, including adsorbing impacts, detaining cracks, and filtering mechanical signals [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Identifying the interfacial dynamic modulus of biocomposites is a long-standing objective of biomaterial science research [ 18 ], it is considered the keystone toward understanding the fundamental structure–function relationships in various biocomposite systems [ 19 , 20 , 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Interfacial Dynamic Modulus of Biological Composites

et al. 2021

View full text Add to dashboard Cite

Biological composites (biocomposites) possess ultra-thin, irregular-shaped, energy dissipating interfacial regions that grant them crucial mechanical capabilities. Identifying the dynamic (viscoelastic) modulus of these interfacial regions is considered to be the key toward understanding the underlying structure–function relationships in various load-bearing biological materials including mollusk shells, arthropod cuticles, and plant parts. However, due to the submicron dimensions and the confined locations of these interfacial regions within the biocomposite, assessing their mechanical characteristics directly with experiments is nearly impossible. Here, we employ composite-mechanics modeling, analytical formulations, and numerical simulations to establish a theoretical framework that links the interfacial dynamic modulus of a biocomposite to the extrinsic characteristics of a larger-scale biocomposite segment. Accordingly, we introduce a methodology that enables back-calculating (via simple linear scaling) of the interfacial dynamic modulus of biocomposites from their far-field dynamic mechanical analysis. We demonstrate its usage on zigzag-shaped interfaces that are abundant in biocomposites. Our theoretical framework and methodological approach are applicable to the vast range of biocomposites in natural materials; its essence can be directly employed or generally adapted into analogous composite systems, such as architected nanocomposites, biomedical composites, and bioinspired materials.

show abstract

Topography‐Supported Nanoarchitectonics of Hybrid Scaffold for Systematically Modulated Bone Regeneration and Remodeling

Jang

Park

Lee

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Orthopedic implants should have sufficient strength and promote bone tissue regeneration. However, most conventional implants are optimized for use either under high mechanical load or for active osseointegration. To achieve the dual target of mechanical durability and biocompatibility, polyether ether ketone (PEEK) filaments reinforced with internal titanium dioxide (TiO2) nanoparticles via dopamine‐induced polymerization are additively manufactured into an orthopedic implant through material extrusion (ME). The exterior of the PEEK/TiO2 composite is coated with hydroxyapatite (HA) using radiofrequency (RF) magnetron sputtering to increase both the strength and biocompatibility provided by homogeneous ceramic–ceramic interactions and the protuberant nanoscale topography between the internal TiO2 nanoparticle reinforcement and external HA coating. The hardness, tensile, and compression, and scratch test results demonstrate a considerable enhancement in the mechanical strength of the hierarchical PEEK/TiO2/HA hybrid composite structure compared to that of the conventional 3D‐printed PEEK. Furthermore, PEEK with internal TiO2 reinforcement improves the proliferation and differentiation of bone cells in vitro, whereas the external HA coating leads to a more prevalent osteoblast absorption. Micro‐computed tomography and histological analyses confirm new bone formation and a high bone‐to‐implant contact ratio on the HA‐coated PEEK structure reinforced with TiO2 nanoparticles.

show abstract

A natural impact-resistant bicontinuous composite nanoparticle coating

Cited by 139 publications

References 62 publications

In situ determination of the extreme damage resistance behavior in stomatopod dactyl club

In situ determination of the extreme damage resistance behavior in stomatopod dactyl club

Assessing the Interfacial Dynamic Modulus of Biological Composites

Topography‐Supported Nanoarchitectonics of Hybrid Scaffold for Systematically Modulated Bone Regeneration and Remodeling

Contact Info

Product

Resources

About