12 Best Biomimicry Examples in Materials Science

Twelve nature-inspired materials — abalone-tough ceramics, spider silk, gecko adhesives, SLIPS coatings and more — with the biology and engineering behind each.

Materials science runs into the same wall again and again: make a material harder and it usually becomes brittle; make it tougher and it usually gets heavier or softer. Strength, toughness, and weight are treated as things you trade against each other.

Nature breaks that trade-off routinely — and it does so with unremarkable ingredients. Abalone shell is made of the same calcium carbonate as blackboard chalk, yet it is roughly 3,000 times tougher. The difference isn’t the material. It’s the architecture. That single insight is what makes biomimicry in materials science so productive: the performance is in the structure, and structure is something engineers can copy.

Below are twelve nature-inspired materials, grouped by the problem they solve — tough composites, fibres and adhesives, functional surfaces, optical materials, and lightweight structure.

Tough composites: beating the strength–toughness trade-off

The abalone shell is the canonical case. Its nacre stacks microscopic aragonite platelets in a staggered brick-and-mortar pattern with nanoscale polymer layers between them. A crack cannot travel straight through; it must deflect around thousands of platelets, spreading fracture energy over an enormous surface area. Nacre-inspired ceramic composites are now used in body-armour and cutting-tool research at MIT and elsewhere.

The mantis shrimp solves a harder version of the same problem. Its striking club accelerates at over 10,000 g and hits at 23 m/s — thousands of times — without shattering. The trick is a Bouligand (helicoidal) architecture: each fibre layer is rotated slightly from the one beneath, so no single crack plane can run through the full thickness. It’s now being applied to military helmets, body armour, and aircraft panels.

Cortical bone achieves stiffness and toughness — normally a trade-off — by organising flexible collagen and stiff hydroxyapatite hierarchically across multiple length scales, from nanoscale mineralised fibrils up to lamellar sheets. Each level adds its own crack-resistance mechanism.

Fibres and adhesives

Spider silk is five times stronger than steel by weight and more elastic than nylon — and it’s spun at room temperature using water as the solvent, not a high-energy industrial process. Beta-sheet protein nanocrystals embedded in an amorphous matrix make it simultaneously stiff and flexible. Bolt Threads, Spiber, and AMSilk are all commercialising synthetic versions.

The Tokay gecko grips through van der Waals forces generated by millions of hierarchical setae — adhesion with no chemistry at all, strong in shear but releasing cleanly at a change of angle. It became Geckskin and NASA’s spacecraft docking adhesives.

The hagfish is the strangest entry here. Threatened, it releases a small volume of mucus that expands 10,000-fold in a fraction of a second, using protein threads finer than spider silk that unravel and interlock on contact with water — structural complexity assembled in milliseconds with no energy input. It’s being investigated for body armour and impact-absorbing gels.

Engineered surfaces and coatings

The lotus leaf gave us the best-known biomimetic coating of all. Microscopic waxy bumps create a composite solid–air interface that maximises the water contact angle, so droplets bead up, roll off, and carry dirt with them. That’s Lotusan exterior paint and Schoeller’s textile treatments.

The pitcher plant went a step further. Instead of a dry textured surface, its rim holds a liquid-infused porous structure — a molecularly smooth, self-replenishing interface that can’t easily be displaced. Commercialised as SLIPS (Slippery Liquid-Infused Porous Surfaces) out of Harvard, it repels ice, oil, blood, and bacteria, and is far more durable than dry superhydrophobic coatings.

Shark skin demonstrates multifunctionality: its riblet denticles cut skin-friction drag by up to 10% and prevent bacterial colonisation, because microbes can’t get purchase on the geometry. Hence both the Speedo Fastskin swimsuit and Sharklet antimicrobial surfaces, plus Airbus riblet-film trials.

Optical materials: colour and light without pigment

The Morpho butterfly contains no blue pigment whatsoever. Layered nanostructures on each wing scale act as a photonic crystal, reflecting blue through constructive interference. Because the colour is structural, it never fades — which is why it underpins anti-counterfeiting features, Teijin’s Morphotex fibre, and Qualcomm’s Mirasol displays.

The moth eye does the inverse: subwavelength tapered nanopillars create a gradual refractive-index transition from air to surface, removing the sharp interface that causes reflection. The result is anti-reflective film for solar panels, lenses, and screens.

Lightweight structure

Honeycomb earns its place as the oldest idea on the list. The hexagon has the best area-to-perimeter ratio of any regular tessellating polygon, and separating two load-bearing skins with a lightweight core produces an exceptional stiffness-to-weight ratio. Hexcel aerospace panels and Nomex fire-resistant cores are direct descendants.

What these materials have in common

Four principles recur across all twelve — and they’re the transferable part:

• Structure beats composition. Nacre is chalk. The Morpho has no blue pigment. Performance comes from geometry at the right length scale, not from exotic ingredients.
• Hierarchy across scales. Bone, silk, nacre, and gecko setae are all organised at nano, micro, and macro scales, with each level contributing a different mechanism.
• Manufacturing at ambient conditions. Spiders spin silk stronger than steel in water at room temperature — a standing rebuke to furnace-and-solvent processing, and the reason bio-inspired materials often carry a sustainability argument.
• Multifunctionality is free. Shark skin reduces drag and resists bacteria from one geometry. Nature rarely optimises for a single property in isolation.

Frequently asked questions

What is biomimicry in materials science?

Biomimicry in materials science means identifying how a biological material achieves a property — toughness, adhesion, water repellency, colour — and reproducing that structural strategy in an engineered material. The emphasis is usually on copying architecture rather than chemistry.

What are biomimetic materials?

Biomimetic materials are engineered materials whose structure is modelled on a biological one. Examples include nacre-inspired ceramic composites, synthetic spider silk, gecko-inspired dry adhesives, and SLIPS liquid-infused coatings.

Which nature-inspired materials can you actually buy?

Several are fully commercial: Lotusan self-cleaning paint, Velcro, Hexcel honeycomb panels, Sharklet antimicrobial surfaces, Speedo Fastskin fabric, Mitsubishi’s moth-eye anti-reflective film, and AMSilk’s biosilk. Others — nacre-inspired armour, synthetic spider silk at scale — are still moving from lab to production.

Why is abalone nacre so much tougher than chalk?

Both are calcium carbonate. Nacre arranges it as microscopic platelets in a staggered brick-and-mortar pattern glued by a compliant organic layer, so cracks must deflect at every interface instead of running straight through. The architecture, not the chemistry, produces roughly a 3,000-fold toughness increase.

The full list at a glance