Self-assembly of amorphous calcium carbonate microlens arrays

Lee, Kyubock; Wagermaier, Wolfgang; Mašić, Admir; Kommareddy, Krishna P.; Bennet, Mathieu; Manjubala, I.; Lee, Seung-Woo; Park, Seung B.; Cölfen, Helmut; Fratzl, Peter

doi:10.1038/ncomms1720

Cited by 161 publications

(156 citation statements)

References 45 publications

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“…The particles prepared via the initial heterogeneous nucleation step, for example, can be designed to incorporate virtually any type of organic and inorganic seed into the oil, thus resulting into composite particles with active cores or protrusions 27,28 . The contact lens-like particles that we prepared via deformation of spherical PS colloids are expected to exhibit a novel phase behaviour 29 and because of their tunable size and convexity are also of potential interest as a source of building blocks for the assembly of microlens arrays 30,31 . The shape-complementary particle pairs obtained via the separation step feature tunable complex geometries that are excellent tools to explore self-assembly mechanisms via lock-and-key interactions 32 .…”

Section: Discussionmentioning

confidence: 99%

Shaping colloids for self-assembly

et al. 2013

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The creation of a new material often starts from the design of its constituent building blocks at a smaller scale. From macromolecules to colloidal architectures, to granular systems, the interactions between basic units of matter can dictate the macroscopic behaviour of the resulting engineered material and even regulate its genesis. Information can be imparted to the building units by altering their physical and chemical properties. In particular, the shape of building blocks has a fundamental role at the colloidal scale, as it can govern the self-organization of particles into hierarchical structures and ultimately into the desired material. Herein we report a simple and general approach to generate an entire zoo of new anisotropic colloids. Our method is based on a controlled deformation of multiphase colloidal particles that can be selectively liquified, polymerized, dissolved and functionalized in bulk. We further demonstrate control over the particle functionalization and coating by realizing patchy and Janus colloids.

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Section: Discussionmentioning

confidence: 99%

Shaping colloids for self-assembly

et al. 2013

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“…Some pioneering methods have been demonstrated that can be used to construct arrays based on amorphous nanomaterials, such as pulsed laser deposition (PLD) [70], electrochemical oxidation [71,72], reactive ion etching (RIE) [73], solution-based self-assembly [74] and CVD [75].…”

Section: Nanosheetsmentioning

confidence: 99%

Tailoring the shape of amorphous nanomaterials: recent developments and applications

2015

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Nanoscale amorphous materials are very important member of the non-crystalline solids family and have emerged as a new category of advanced materials. However, morphological control of amorphous nanomaterials is very difficult because of the atomic isotropy of their internal structures. In this review, we introduce some emerging innovative methods to fabricate well-defined, regular-shaped amorphous nanomaterials. We then highlight some examples to evaluate the use of these amorphous materials in electrodes, and their optical response. There is still plenty of room to explore the amorphous world. As researchers continue to advance the scientific tools that underpin the concepts related to "amorphous", additional applications of these materials will emerge. Their controlled synthesis will undoubtedly attain new heights in the discipline of nanomaterials, and allow nanoscale amorphous materials to become more sophisticated, diverse, and mainstream.

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“…These processes have inspired new synthetic methods including the replication of the sea urchin skeletal plate using solid substrates 17 or the fabrication of micro-lens arrays by self-assembly from amorphous calcium carbonate (ACC) mediated by organic molecules 18 . However, before being able to use such approaches effectively, the mechanisms of morphological control and polymorph selection must be fully understood.…”

Section: Introductionmentioning

confidence: 99%

Using simulation to understand the structure and properties of hydrated amorphous calcium carbonate

et al. 2016

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We report results from studies using four different protocols to prepare hydrated amorphous calcium carbonate, ranging from random initial structures to melting hydrated mineral structures.All protocols give good agreement with experimental X-ray structure factors. However, the thermodynamic properties, ion coordination environments, and distribution of water for the structures produced by the protocols show statistically significant variation depending on the protocols used. We discuss the diffusivity of water through the various structures and its relation to experiments. We show that one protocol (based on melting ikaite) gives a structure where the water is mobile, due to the presence of porosity in the amorphous structure. We conclude that our models of hydrated amorphous calcium carbonate do give a range of behaviour that resembles that observed experimentally, although the variation is less marked in the simulations than in experiments.3

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Self-assembly of amorphous calcium carbonate microlens arrays

Cited by 161 publications

References 45 publications

Shaping colloids for self-assembly

Shaping colloids for self-assembly

Tailoring the shape of amorphous nanomaterials: recent developments and applications

Using simulation to understand the structure and properties of hydrated amorphous calcium carbonate

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