The role of collagen in the dermal armor of the boxfish

Garner, Sean; Naleway, Steven E.; Hosseini, Maryam Sadat; Acevedo, Claire; Gludovatz, Bernd; Schaible, Eric; Jung, Jae‐Young; Ritchie, Robert O.; Zavattieri, Pablo; McKittrick, Joanna

doi:10.1016/j.jmrt.2020.09.090

Cited by 7 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…cholesterics), in which the director of the molecules rotates 360° along its helical axis with a chiral pitch, p . [ 3 ] Cholesteric‐like structures are ubiquitous and endow living matter with various important physical properties; for instance, the extreme compaction of DNA, [ 4–6 ] toughening of bones, [ 7 ] exoskeletons, [ 8–10 ] and fish scales, [ 11–13 ] and selective color reflection from the exocuticles of certain fruits [ 14,15 ] and insects. [ 16–18 ]…”

Section: Introductionmentioning

confidence: 99%

A New Class of Chiral Nematic Phase with Helical Polar Order

Nishikawa

Araoka

2021

Advanced Materials

View full text Add to dashboard Cite

A novel chiral nematic phase with a polar helical order is realized via the introduction of helical twisting power into a polar nematogen. The properties of the induced polar nematic (polar cholesteric: Np*) phase differ from those of the conventional cholesteric (N*) phases existing thus far. Np*, which is a new class of N* structures, is characterized not only by its helically twisted nematic director, but also by a continuously twisted polarization. Transmission spectroscopy and helical pitch measurements in a wedge cell revealed that the half‐helical pitch in the Np* phase vanished because of the polar response in the Np* helix. The inner polar director in the Np* phase is confirmed in dielectric and second‐harmonic‐generation studies. Furthermore, this unique Np*LC, which corresponds to a half‐/full‐pitch helix, enables ultrafast electro‐optic switching (τ < 20 µs), and proposes new potential applications for electrically interchangeable photonic bandgaps.

show abstract

Section: Introductionmentioning

confidence: 99%

A New Class of Chiral Nematic Phase with Helical Polar Order

Nishikawa

Araoka

2021

Advanced Materials

View full text Add to dashboard Cite

show abstract

“…Their structural configuration found to be hollow honeycomb-like pattern as shown in Figure 6. These are also composed of collagen fibers but not as strong as the structural arrangement found in other fish scales (Garner et al, 2020). The very reason for its low-strength armor capabilities as compared to other fish scales lies within the fact that these scales do not overlap and are only in a singlelayer configuration, but due to high mineralization within the scales, they tend to exhibit some protection and flexibility of some consideration (Yang et al, 2015).…”

Section: Effects Of Fish Scale Configuration On Mechanical Propertiesmentioning

confidence: 97%

Fish Scales and Their Biomimetic Applications

et al. 2021

View full text Add to dashboard Cite

Biomaterials are evolving quite rapidly over the last decade. Many applications have been considered toward their involvement in saving lives in the line of duty for law enforcement agencies and military operations. This article discusses recent work on the role of biomaterials that can be considered as a competitive alternative to composites, being used against ballistic impacts. The fish-scaled biomaterials are focused on in this paper, highlighting their excellent mechanical properties and structural configurations. In its natural environment, the scale provides fishes with an armor plating, which is significantly effective in their survival against attacks of predator and the impact inflicted from sharp teeth. These bioinspired materials, if engineered properly, can provide an excellent alternative to current Kevlar® type armors, which are significantly heavier and can cause fatigue to the human body over long-term usage. The investigated materials can provide effective alternatives to heavier and expensive materials currently used in different industrial applications. Additionally, some recent development in the usage of fish scales as a biomaterial and its applications in rapid prototyping techniques are presented. Finally, this review provides useful information to researchers in developing and processing cost-effective biomaterials.

show abstract