Understanding the oriented-attachment growth of nanocrystals from an energy point of view: a review

Abstract

Since Penn et al. first discovered the oriented attachment growth of crystals, the oriented attachment mechanism has now become a major research focus in the crystal field, and extensive efforts have been carried out over the past decade to systematically investigate the growth mechanism and the statistical kinetic models. However, most of the work mainly focuses on the experimental results on the oriented attachment growth. In contrast to the previous reviews, our review provides an overview of the recent theoretical advances in oriented attachment kinetics combined with experimental evidences. After a brief introduction to the van der Waals interaction and Coulombic interaction in a colloidal system, the correlation between the kinetic models of oriented attachment growth and the interactions is then our focus. The impact of in situ experimental observation techniques on the study of oriented attachment growth is examined with insightful examples. In addition, the advances in theoretical simulations mainly investigating the thermodynamic origin of these interactions at the atomic level are reviewed. This review seeks to understand the oriented attachment crystal growth from a kinetic point of view and provide a quantitative methodology to rationally design an oriented attachment system with pre-evaluated crystal growth parameters.

Understanding the Role of Solvation Forces on the Preferential Attachment of Nanoparticles in Liquid

“…"oriented attachment"). 11 Through preferred attachment, preferred coalescence reactions between particle surfaces (i.e. at certain particle positions and orientations) result in specific particle structures.…”

“…11,39 MD, on the other hand, attempts to give a complete description provided the model includes all relevant interactions.…”

A transferable force field for CdS-CdSe-PbS-PbSe solid systems

“…[16][17][18][19] Recently, oriented attachment (OA) 20 and ion exchange (IE) 21,22 have been shown to be very powerful tools in the synthesis and design of nanostructures. In OA, NCs are used as building blocks and are assembled in different a) Electronic mail: t.j.h.vlugt@tudelft.nl patterns depending on the preferred attachments of particular facets.…”

“…In OA, NCs are used as building blocks and are assembled in different a) Electronic mail: t.j.h.vlugt@tudelft.nl patterns depending on the preferred attachments of particular facets. 20,23 In the IE process, either the cations or anions in a nanostructure are partially or completely replaced by a substitutional ion from a solution or vapor. 21,22 OA and IE can be independently used [24][25][26][27][28][29][30][31] or combined 32 to synthesize nanostructures such as nanowires, nanorod couples, dimers, thin films, and 2-D superlattices.…”

Vortex induced flower-like Ni-Co coating by a hydrothermal approach

“…From vortex generator to chirality-specific lift forces, the interesting vortex flows are becoming newly hot topics in scientific research [1][2][3][4]. Compared with some exterior forces (electric and magnetic types) [15,16] and interior forces (Van De Waals) [17], the vortex flows will give some new ideas to drive the assembly of micro/nano-structures with desired dimension and morphology. …”