Next generation protein-based materials capture and preserve projectiles from supersonic impacts
Next generation protein-based materials capture and preserve projectiles from supersonic impacts
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下一代蛋白质材料可捕获并保护弹丸免受超音速撞击
DOI：
10.1101/2022.11.29.518433
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Doolan J
中科院分区：
文献类型：
--
作者：
Doolan J
极端耗能材料对于一系列应用至关重要。军队和警察部队需要防弹装甲，以确保其人员的安全，而航空航天工业需要能够捕获、保存和研究超高速射弹的材料。然而，目前的工业标准显示出至少一个固有的局限性，例如重量、透气性、刚度、耐久性和无法保存捕获的射弹。为了解决这些限制，我们转向自然，使用经过数千年进化的蛋白质来实现有效的能量耗散。具体而言，将机械敏感蛋白talin的重组形式并入单体单元中并交联，从而产生talin减震材料（TSAM）。当受到1.5 km s− 1的超音速射击时，TSAM被证明可以吸收冲击并捕获和保护射弹。
Extreme energy-dissipating materials are essential for a range of applications. The military and police force require ballistic armour to ensure the safety of their personnel, while the aerospace industry requires materials that enable the capture, preservation and study of hypervelocity projectiles. However, current industry standards display at least one inherent limitation, such as weight, breathability, stiffness, durability and failure to preserve captured projectiles. To resolve these limitations, we have turned to nature, using proteins that have evolved over millennia to enable effective energy dissipation. Specifically, a recombinant form of the mechanosensitive protein talin was incorporated into a monomeric unit and crosslinked, resulting in a talin shock-absorbing material (TSAM). When subjected to 1.5 km s−1supersonic shots, TSAMs were shown to absorb the impact and capture and preserve the projectile.