Direct observation of two-step crystallization in nanoparticle superlattice formation

Direct imaging of nanoparticle solutions by liquid phase transmission electron microscopy has enabled unique in-situ studies of nanoparticle motion and growth. In the present work, we report on real-time formation of two-dimensional nanoparticle arrays in the very low diffusive limit, where nanoparticles are mainly driven by capillary forces and solvent fluctuations. We find that superlattice formation appears to be segregated into multiple regimes. Initially, the solvent front drags the nanoparticles, condensing them into an amorphous agglomerate. Subsequently, the nanoparticle crystallization into an array is driven by local fluctuations. Following the crystallization event, superlattice growth can also occur via the addition of individual nanoparticles drawn from outlying regions by different solvent fronts. The dragging mechanism is consistent with simulations based on a coarse-grained lattice gas model at the same limit.

[1]  Andreas Stein,et al.  Colloidal assembly: the road from particles to colloidal molecules and crystals. , 2011, Angewandte Chemie.

[2]  C. Bertozzi,et al.  Self-catalyzed growth of S layers via an amorphous-to-crystalline transition limited by folding kinetics , 2010, Proceedings of the National Academy of Sciences.

[3]  J. Vermant,et al.  Directed self-assembly of nanoparticles. , 2010, ACS nano.

[4]  Yilong Han,et al.  Two-dimensional freezing criteria for crystallizing colloidal monolayers. , 2010, The Journal of chemical physics.

[5]  A Paul Alivisatos,et al.  Device-scale perpendicular alignment of colloidal nanorods. , 2010, Nano letters.

[6]  S. Narayanan,et al.  Capturing the crystalline phase of two-dimensional nanocrystal superlattices in action. , 2010, Nano letters.

[7]  T. Rajh,et al.  Comparison of structural behavior of nanocrystals in randomly packed films and long-range ordered superlattices by time-resolved small angle X-ray scattering. , 2009, Journal of the American Chemical Society.

[8]  Christopher E. Wilmer,et al.  Nanoscale forces and their uses in self-assembly. , 2009, Small.

[9]  A. Alivisatos,et al.  Observation of Single Colloidal Platinum Nanocrystal Growth Trajectories , 2009, Science.

[10]  J. Savage,et al.  Experimental evidence for two-step nucleation in colloidal crystallization. , 2009, Physical review letters.

[11]  A. Alivisatos,et al.  Nanocrystal diffusion in a liquid thin film observed by in situ transmission electron microscopy. , 2009, Nano letters.

[12]  Peidong Yang,et al.  Sub-10 nm platinum nanocrystals with size and shape control: catalytic study for ethylene and pyrrole hydrogenation. , 2009, Journal of the American Chemical Society.

[13]  D. Peckys,et al.  Electron microscopy of whole cells in liquid with nanometer resolution , 2009, Proceedings of the National Academy of Sciences.

[14]  K. Jaqaman,et al.  Robust single particle tracking in live cell time-lapse sequences , 2008, Nature Methods.

[15]  F. Testard,et al.  Gold nanoparticle superlattice crystallization probed in situ. , 2008, Physical review letters.

[16]  E. Rabani,et al.  Drying-Mediated Hierarchical Self-Assembly of Nanoparticles: A Dynamical Coarse-Grained Approach , 2008 .

[17]  A. Levine,et al.  Imaging the Sublimation Dynamics of Colloidal Crystallites , 2006, Science.

[18]  E. Rabani,et al.  Self-assembly of nanoparticles into rings: a lattice-gas model. , 2006, The journal of physical chemistry. B.

[19]  Bartosz A. Grzybowski,et al.  Electrostatic Self-Assembly of Binary Nanoparticle Crystals with a Diamond-Like Lattice , 2006, Science.

[20]  Eric I Corwin,et al.  Kinetically driven self assembly of highly ordered nanoparticle monolayers , 2006, Nature materials.

[21]  E. Rabani,et al.  Out‐of‐Equilibrium Self‐Assembly of Binary Mixtures of Nanoparticles , 2006 .

[22]  Christopher B. Murray,et al.  Structural diversity in binary nanoparticle superlattices , 2006, Nature.

[23]  E. Rabani,et al.  Self-assembly of nanoparticles in three-dimensions: formation of stalagmites. , 2005, The journal of physical chemistry. B.

[24]  M. Malac,et al.  Radiation damage in the TEM and SEM. , 2004, Micron.

[25]  Louis E. Brus,et al.  Drying-mediated self-assembly of nanoparticles , 2003, Nature.

[26]  F. Ross,et al.  Dynamic microscopy of nanoscale cluster growth at the solid–liquid interface , 2003, Nature materials.

[27]  K.-S. Cho,et al.  Three-dimensional binary superlattices of magnetic nanocrystals and semiconductor quantum dots , 2003, Nature.

[28]  R. Nagel,et al.  Liquid–liquid separation in solutions of normal and sickle cell hemoglobin , 2002, Proceedings of the National Academy of Sciences of the United States of America.

[29]  Guanglu Ge,et al.  Gas-Liquid-Solid Phase Transition Model for Two-Dimensional Nanocrystal Self-Assembly on Graphite , 2002 .

[30]  H. Lekkerkerker,et al.  Insights into phase transition kinetics from colloid science , 2002, Nature.

[31]  Horst Weller,et al.  Self-Organization of Cadmium Sulfide and Gold Nanoparticles by Electrostatic Interaction , 2002 .

[32]  P. Kralchevsky,et al.  Capillary forces and structuring in layers of colloid particles , 2001 .

[33]  L. Brus,et al.  Fast Surface Diffusion of Large Disk-Shaped Nanocrystal Aggregates , 2001 .

[34]  Andrew Schofield,et al.  Real-Space Imaging of Nucleation and Growth in Colloidal Crystallization , 2001, Science.

[35]  T. Lubensky,et al.  Surfactant-mediated two-dimensional crystallization of colloidal crystals , 1999, Science.

[36]  B. Korgel,et al.  Assembly and Self-Organization of Silver Nanocrystal Superlattices: Ordered “Soft Spheres” , 1998 .

[37]  D. Frenkel,et al.  Enhancement of protein crystal nucleation by critical density fluctuations. , 1997, Science.

[38]  David G. Grier,et al.  VIDEO MICROSCOPY OF MONODISPERSE COLLOIDAL SYSTEMS , 1996 .

[39]  Alfons van Blaaderen,et al.  Real-Space Structure of Colloidal Hard-Sphere Glasses , 1995, Science.

[40]  C. A. Murray,et al.  The microscopic dynamics of freezing in supercooled colloidal fluids , 1994 .

[41]  Elbaum,et al.  How does a thin wetted film dry up? , 1994, Physical review letters.

[42]  I. B. Ivanov,et al.  Mechanism of formation of two-dimensional crystals from latex particles on substrates , 1992 .

[43]  P. Steinhardt,et al.  Bond-orientational order in liquids and glasses , 1983 .