Sentences with word «nacre»

In nacre, layer lattices of inorganic calcium carbonate alternate with layers of organic material.
One of the world's most distinguished Italian manufacturer of nacre buttons is Gritti.
The clam creates layer after layer of a coating known as nacre that, over time, turns the invader into a beautiful pearl.
The natural version, also called nacre, is found on the inner shell of some molluscs, where it is built up of layers of the mineral aragonite separated by organic polymers such as chitin.
«Transparent artificial nacre: A brick wall at the nanoscale.»
Also, it was not possible to synthesize transparent nacre - mimetic films and foils.
Antoni P. Tomsia of Lawrence Berkeley National Laboratory and his colleagues found they could mimic nacre just by freezing a watery suspension loaded with hydroxyapatite, bone's mineral component (left).
According to lead author Professor Yves Reznik from the University of Caen Côte de Nacre Regional Hospital Center, Caen, France, «Pumps enhance effective insulin absorption and increase insulin sensitivity thanks to the continuous daily subcutaneous insulin delivery.
Nacre buttons are a timelessly fashionable sewing accessory, renowned both for its physical properties and stylish look.
Rufino Tamayo Untitled, 1969 From portfolio Mujeres, 1969 Color lithograph on Japon nacre paper 22 1/4 x 30 1/4 16 from an edition of 25 Printed by Atelier Desjobert, Paris Published by Tombstone Publishers, New York 1969 Collection Neuberger Museum of Art Purchase College, State University of New York Gift of Fritz Landshoff, 1974.27.01.16
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.
Previous approaches to synthesize nacre - mimetics were not feasible on the large scale due to energy - intensive and laborious multistep procedures.
We would like to use nacre and similar materials as a protective coating in many situations.
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.
However, if we use large clays with an aspect ratio of 3500, the resulting nacre - mimetics are both extremely stiff and strong.
The Aachen - based research group also refined the underlying preparation procedure: «Mussels grow nacre in a lengthy process.
The structure of nacre resembles a brick wall at the microscopic scale: Calcium carbonate platelets («bricks») alternate with soft biopolymer layers («mortar»).
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.
The romantic and elegant Garnier - Thiebaut Mille Datcha Nacre Tablecloth will add a touch of magic to any occasion.
Striking Carambola Café Nacre Star Fruit Necklace, comprising of nine shell / mother of pearl beads, each measuring approx. 55 mm x 40 mm; held together by a fabulous coordinating sterling...
The pearls display a lovely nacre, lustre, and iridescence.
The pearls display an attractive nacre, lustre, and iridescence.
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.
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!
Let's just say it «bumped into» my Sea Salt - colored frame, some leftover Nacre - colored paint, a can a chalkboard spray paint and a piece of sandpaper, and they all lived happily ever after.
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.
Clockwise from above, far left, San Marco 1496 - 01 in Nacre, by
An airtight new material mimics mother - of - pearl, also called nacre: it is remarkably tough without being brittle or dense.
Using this technique, investigators have crystallized small molecules (predominantly water) to organize colloid particles, but, due to the intrinsic kinetics of these processes, the particles are normally expelled into the microscale grain boundaries, and so researchers have not been able to order nanoparticles across the multiple scales necessary to mimic nacre.
The design of guest rooms within Jumeirah Royal Saray pays homage to the Bahraini pearl diving industry with the colours of nacres (mother of pearl), silvers, and shimmering ocean blue tones.
An illustration shows a model platelet - matrix composite in the foreground and nacre, one of nature's toughest materials, in the background.
This outstanding combination of features makes the nacre - mimetic material a promising candidate for future applications, not only as a structural material, but also for gas storage applications and food packaging.
Applications in electronics generally require barriers against air and moisture that are stronger than what Sun and his colleagues were able to achieve, but in principle their nacre - mimicking coating could be used on cellphone parts to stop them from being ruined or combusting.
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.
The Walther group at DWI now prepared a nacre - inspired nanocomposite that combines exceptional mechanical properties with glass - like transparency and a high gas - and fire - barrier.
Researchers at Columbia Engineering have demonstrated for the first time a new technique that takes its inspiration from the nacre of oyster shells, a composite material that has extraordinary mechanical properties, including great strength and resilience.
«The nacre - mimetics based on small clays are very tough.
Andreas Walther and his team decided to use synthetic nanoclays for their nacre - mimetic materials.
Then, they transferred silver nanowires from a filter membrane to the nacre mimetic sheet by hot pressing the pearly substrate against the membrane.
Nacre, otherwise known as mother of pearl, makes up the opalescent exterior coating of a pearl and the inner coating of mollusk shells.
So, Hongwei Duan and colleagues wanted to explore a nacre mimetic as the substrate for silver nanowires to develop a flexible resistive heater.
The researchers prepared the nacre mimetic from a synthetic nanoclay coated with a polyvinyl alcohol polymer that self - assembled upon water removal, generating a flexible transparent sheet.
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