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Biomimetics

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Biomimetics is the scientific practice of emulating natural models, systems, and elements to solve complex human problems.

Loligo forbesii
Loligo forbesii

The field draws its name from the Greek words "bios," meaning life, and "mimesis," meaning imitation. It is a discipline where engineers, material scientists, and biologists work together to study how nature functions. By understanding these biological processes, humans can create new technologies that are efficient and sustainable. This field is not just a theoretical pursuit; it has a massive global economic impact. Experts estimate the value of bioinspired materials and surfaces reaches several hundred billion dollars per year worldwide.

The core mechanism of biomimetics involves studying the hierarchical organization of biological materials. Nature builds things from the molecular and nano-scales up to the macro-scale.

Bruchfläche eines Perlmuttstücks
Bruchfläche eines Perlmuttstücks

These intricate structures, or nanoarchitectures, allow biological materials to be highly functional. A surface's properties result from a complex interplay between its physical structure and its chemical properties. For example, nature has already mastered engineering challenges like self-healing, hydrophobicity, and harnessing solar energy.

TobaccoMosaicVirus
TobaccoMosaicVirus

Scientists observe these specific cause-and-effect relationships to replicate them in human-made objects.

There are several distinct terms used to describe these scientific approaches. Biomimetics and biomimicry are closely related, with the latter being popularized by Janine Benyus in her 1997 book. Benyus suggests that nature should serve as a "Model, Measure, and Mentor" for human innovation. Another related term is bionics, which Jack E. Steele defined in 1960 as the science of copying functions from nature. While "bionic" became a popular term in media, it was often associated with supernatural strength in science fiction. Because of this connotation, the scientific community largely moved toward the term biomimetics instead.

The history of looking to nature for inspiration is quite long. In the 15th century, Leonardo da Vinci studied the anatomy of birds and mammals.

Leonardo Design for a Flying Machine, c. 1488
Leonardo Design for a Flying Machine, c. 1488

He produced many sketches of "flying machines" based on these biological observations. Later, in 1903, the Wright Brothers successfully flew the first heavier-than-air aircraft, allegedly using observations of pigeons. In the 1950s, biophysicist Otto Schmitt developed the formal concept of biomimetics. He studied the giant axons, or nerve fibers, of the longfin inshore squid to develop the Schmitt trigger. This device was an attempt to replicate the biological system of nerve propagation.

Today, biomimetic technologies are applied across many different fields. In the realm of locomotion, engineers design aircraft wings inspired by the flight techniques of birds and bats.

Skybird
Skybird

Some robots are designed to mimic specific animals to improve efficiency. The BionicKangaroo moves like a real kangaroo to transfer energy between jumps. The Kamigami Robots are children's toys that mimic the locomotion of cockroaches to move quickly. Even high-speed transportation uses these ideas, such as the Japanese Shinkansen 500 Series train. Its streamlined design was modeled after the beak of a kingfisher bird to improve aerodynamics.

Flying robots, or BFRs, provide a detailed look at how different species inspire design. BFRs inspired by mammals or birds often use flapping wings to generate lift and thrust.

Insectothopter
Insectothopter

These robots can be designed to be impact resistant, which is useful in cluttered environments. For instance, some mammal-inspired robots use shock absorbers to reduce the impact of landing. Insect-inspired BFRs, like those modeled after dragonflies or beetles, operate at much higher flapping frequencies.

Insectothopter
Insectothopter

These smaller robots are especially useful for navigating dense or tight spaces.

Architecture is another field undergoing a biomimetic revolution. Biomimetic architecture seeks to use natural principles to solve problems regarding building sustainability and energy use. This differs from "biomorphic" architecture, which only uses natural shapes for decoration or aesthetics.

Co op Building dual facade
Co op Building dual facade

Biomimetic architects use nature as a "measure" by using ecological standards to judge how efficient a building is. They also use nature as a "mentor" to learn how organisms survive in changing environments. By applying these biological strategies, architects aim to create buildings that function more like living systems.

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🖼️ Images & Media (10)
File:Loligo forbesii.jpg
Loligo forbesii.jpg
File:Leonardo Design for a Flying Machine, c. 1488.jpg
Leonardo Design for a Flying Machine, c. 1488.jpg
File:Skybird.gif
Skybird.gif
File:Insectothopter.png
Insectothopter.png
File:Co op Building dual facade.jpg
Co op Building dual facade.jpg
File:Sepiolite-469730.jpg
Sepiolite-469730.jpg
File:Bruchfläche eines Perlmuttstücks.JPG
Bruchfläche eines Perlmuttstücks.JPG
File:Macroscopic picture of a film of cellulose nanocrystal suspension cast on a Petri dish (diameter 3.5cm)..jpg
Macroscopic picture of a film of...
File:Morpho didius Male Dos MHNT.jpg
Morpho didius Male Dos MHNT.jpg
File:TobaccoMosaicVirus.jpg
TobaccoMosaicVirus.jpg
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