Clockwise from above, far left, San Marco 1496 - 01
in Nacre, by Manuel Canovas at Colefax and Fowler, is a painterly white print; Kemsley in Natural, by Ramm, Son & Crocker; and Ashbrook J437F - 01 in Natural, by Jane Churchill at Colefax and Fowler, are both pretty florals in white.
In nacre, layer lattices of inorganic calcium carbonate alternate with layers of organic material.
This involved measuring the ratio of radioactive carbon (14C) to normal carbon (12C)
in the nacre.
Not exact matches
Examples include
nacre (mother - of - pearl), tooth enamel, bamboo and the dactyl clubs of mantis shrimp, all of which are nanoscale arrangements of hard platelets connected by soft matrix materials and arranged
in overlapping brick - and - mortar, bouligand or other architectures.
Artificial
nacre - like materials are usually painstakingly built up layer by layer, but Luyi Sun at the University of Connecticut
in Storrs and his colleagues found a way to do it all
in one go.
The Aachen - based research group also refined the underlying preparation procedure: «Mussels grow
nacre in a lengthy process.
A good example
in nature is
nacre, which is 95 percent inorganic aragonite and 5 percent crystalline polymer (chitin); its hierarchical nanoparticle ordering — a mixture of intercalated brittle platelets and thin layers of elastic biopolymers — strongly improves its mechanical properties.
We would like to use
nacre and similar materials as a protective coating
in many situations.
Scientists have long been interested
in this lightweight, yet strong material for a range of applications, manufacturing substances that imitate
nacre for use as fire retardants, gas barriers and conductors.
Nicole Gehrke, a former Ph.D. student
in the lab, had recently managed to fill a biological matrix with mineral to reproduce
nacre, a composite, iridescent, calcium carbonate — rich material formed
in the inner shell of some mollusks and commonly known as mother of pearl.
Luyi Sun at the University of Connecticut
in Storrs and his colleagues made an artificial
nacre that is 60 per cent stronger than stainless steel.
Just as the the
nacre's «weak» protein - rich boundaries dissipated energy and kept the chalky structure from shattering, these curving cracks
in the glass would divert and channel cracks
in the brittle glass so it could not fracture any further.
To create a cultured pearl, a tiny bead is implanted into an oyster and gradually over time the oyster coats the bead
in many layers of natural minerals and proteins known as
nacre.
The Roland Garros edition is only available
in white (Perle
Nacre) or black (Perla Nera).
Much like irritants caught
in an oyster's flesh, words once hurtful and degrading lose their power to wound us as associations accumulate like so many layers of radiant
nacre, such that what once caused pain becomes bound
in possibility.
HELEN FRANKENTHALER (1928 - 2011) Untitled lithograph
in colors, circa 1965, on Japon
nacre paper, signed
in felt - tip pen, numbered 11/100, the colors slighlty attenuated, otherwise generally
in good condition, framed Sheet: 22 x 16 5/8
in.
Via Ars Technica via Science More on Science Behind Plastic Biomimicry:
Nacre Inspires Transparent Strong As Steel Plastic Teen Finds Way to Decompose Plastic Bags
in Just 3 Months!