Vast beds of 'hair' coat many living systems, and usually exhibit shear-thinning behaviour — their flow resistance lessens with speed. But with geometric tweaks, such beds can also show shear-thickening and asymmetric ratchet-like behaviour.

中文翻译：

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柔软的材料：稀疏头发的治疗方法

巨大的“毛发”床覆盖了许多生物系统，通常表现出剪切稀疏的行为-它们的流动阻力随着速度而降低。但是，通过几何调整，此类床也可以显示出剪切增厚和不对称的棘轮状行为。