Silk and Nacre: Two Biomimetic Design Principles
A C1 Spanish article on how the structures of spider silk and nacre inform material design.
Seda y nácar: dos lecciones de biomimética para diseñar materiales
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About this article
What you'll learn
Scientific vocabulary for strength and fracture, contrastive links, concessive clauses, and the subjunctive.
The text compares the hierarchical structure of spider silk with the layered structure of nacre and explains why reproducing a natural principle is harder than copying a composition.
After reading
Article learning block
Phrases, words, grammar, and quick practice from this text.
Phrases for training
Add useful phrases to SRS or mark them as already known.
A simple vista
newat first glance
The phrase introduces an initial impression that the text may later refine or challenge.
Useful for moving from observation to analysis.
conviene distinguir
newit is useful to distinguish
The impersonal construction «conviene» gives advice without a direct command.
It helps introduce an important distinction precisely.
no basta con obtener la molécula adecuada
newobtaining the right molecule is not enough
«No basta con» states that one condition is not sufficient on its own.
Useful for explaining a problem with several factors.
Queda por resolver
newit remains to be solved
«Queda por» followed by an infinitive names a task that is not yet complete.
It helps state an open problem cautiously.
Key words
Vocabulary that carries the school-day topic.
Biomimetics
biomimética
biomimetics
Biomimetics studies natural principles so they can inform human technological problems.
This is the central term of the article.
Toughness
tenacidad
ability to absorb energy before fracture
Here «tenacidad» means a material's ability to absorb energy before breaking.
It prevents confusion with strength alone.
Spidroins
espidroínas
spidroins, spider-silk proteins
Spidroins are structural proteins from which spider-silk fibers form.
It helps with the molecular level of the text.
Structural network
entramado
structural network
«Entramado» names a system of connected elements that work together.
Useful for describing a material's complex structure.
Platelets
plaquetas
thin plates
In nacre, «plaquetas» are thin mineral plates, not blood platelets.
It resolves an ambiguity in the scientific term.
Crack
grieta
crack
A «grieta» is a break in a material that can propagate under load.
A key word for understanding fracture mechanics.
Grammar in context
Patterns from the text worth noticing after reading.
Concession with aunque
Aunque compartan poca semejanza exterior
although they share little outward resemblance
The subjunctive «compartan» follows «aunque» because the outward resemblance is presented as irrelevant to the main conclusion.
It helps build a nuanced argument with a concession.
Not this, but that
No se trata de copiar un organismo, sino de entender un principio útil
it is not about copying, but about understanding
The pattern «no se trata de..., sino de...» rejects one interpretation and replaces it with a more precise one.
Useful for correcting a misconception.
The cuanto más proportional pattern
Cuanto más coordinada está esa arquitectura, más difícil resulta
the more coordinated the architecture, the harder it becomes
«Cuanto más..., más...» shows that a change in one property accompanies a change in another.
It helps describe a relationship without exact numbers.
Possibility with puede que
Puede que una grieta se inicie
a crack may start
The subjunctive «se inicie» follows «puede que» because the event is presented as possible.
It helps state a scientific possibility cautiously.
Consequence with de ahí que
De ahí que la palabra «inspirado» sea más precisa
hence the word is more precise
«De ahí que» introduces a logical consequence and requires the subjunctive «sea».
It helps link evidence to a conclusion.
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