Kinetic pathways of crystallization at the nanoscale

Ou, Zihao; Wang, Ziwei; Luo, Binbin; Luijten, Erik; Chen, Qian

doi:10.1038/s41563-019-0514-1

Cited by 175 publications

(182 citation statements)

References 38 publications

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“…Although OM has been routinely used to observe dynamics of micron-scale particles, it is not the case for the nanoparticles because of the diffraction limit of visible light disable single particle-level resolution at nanoscale. In order to circumvent such obstacle in terms of the imaging tool, recent progresses in liquid-phase transmission electron microscopy (LPTEM) have been gaining increasing attention, as it provides self-assembly pathways of nanoparticles in real time and space [88,89,174]. In order to push the limit of current status of LPTEM to fully resolve nanoparticle interactions within the time scale of assembly events, K3 cameras with a frame rate up to 1500 frames per second and machine learning algorithms to automatically extract out meaningful physical information from overwhelming amount of data have also been developed [175].…”

Section: Discussionmentioning

confidence: 99%

“…Nonetheless, due to two to three orders of magnitude difference in scale, nanoscopic self-assembly compared to that at micron-scale has intrinsic differences worth our attention. To list some, interaction between nanoparticles is long-range relative to their size, allowing recognition and specific alignment of nanoparticles even when they are physically apart [88,89]. Moreover, unlike those of micron-scale particles, nanoparticle interactions are more drastically controlled by particles' local morphology details (e.g., truncation at the nanoprism tip), possibly due to the long-range effect and facet-dependent density of capping ligands.…”

Section: Self-assembly Of Patchy Nanoparticles 31 Experimental Studimentioning

confidence: 99%

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Patchy Nanoparticle Synthesis and Self-Assembly

Kim¹,

Yao²,

Kalutantirige³

et al. 2020

Self-Assembly of Nanostructures and Patchy Nanoparticles

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Biological building blocks (i.e., proteins) are encoded with the information of target structure into the chemical and morphological patches, guiding their assembly into the levels of functional structures that are crucial for living organisms. Learning from nature, researchers have been attracted to the artificial analogues, “patchy particles,” which have controlled geometries of patches that serve as directional bonding sites. However, unlike the abundant studies of micron-scale patchy particles, which demonstrated complex assembly structures and unique behaviors attributed to the patches, research on patchy nanoparticles (NPs) has remained challenging. In the present chapter, we discuss the recent understandings on patchy NP design and synthesis strategies, and physical principles of their assembly behaviors, which are the main factors to program patchy NP self-assembly into target structures that cannot be achieved by conventional non-patched NPs. We further summarize the self-assembly of patchy NPs under external fields, in simulation, and in kinetically controlled assembly pathways, to show the structural richness patchy NPs bring. The patchy NP assembly is novel by their structures as well as the multicomponent features, and thus exhibits unique optical, chemical, and mechanical properties, potentially aiding applications in catalysts, photonic crystals, and metamaterials as well as fundamental nanoscience.

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Section: Discussionmentioning

confidence: 99%

Section: Self-assembly Of Patchy Nanoparticles 31 Experimental Studimentioning

confidence: 99%

Patchy Nanoparticle Synthesis and Self-Assembly

Kim¹,

Yao²,

Kalutantirige³

et al. 2020

Self-Assembly of Nanostructures and Patchy Nanoparticles

Self Cite

View full text Add to dashboard Cite

show abstract

“…44,[68][69][70][71][72][73][74] Finally, because there is a qualitative similarity between how nanoparticles and how atoms interact in a solution, insights from the nanoparticle self-organization, which are easier to track due to their sizes being larger than the size of individual atoms, can help to better understand how atoms crystallize into matter. 5…”

Section: In Situ Tem For Nucleation Growth and Self-assembly Of Nanmentioning

confidence: 99%

“…[1][2][3] How do nanomaterials transform or assemble to form two-dimensional (2D) or three-dimensional (3D) macroscopic structures with unique properties? [4][5][6] How do large macromolecular biological complexes form from the individual subunits 7 and modify their structure to achieve specific functions? 8 Liquid cell TEM is a powerful emergent platform to explore these and other physical, chemical, and biological processes in liquids through direct time-resolved nanoscale imaging.…”

Section: Introductionmentioning

confidence: 99%

Liquid phase transmission electron microscopy for imaging of nanoscale processes in solution

Mirsaidov¹,

Patterson²,

Zheng³

2020

MRS Bull.

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“…Directed self‐assembly of anisotropic nanoscale building blocks is an efficient strategy for producing diverse superstructures with unique optical properties for technologies applications, [ 1–8 ] especially for plasmonic nanocrystals, as the multiple optical properties are determined by their geometrical arrangement. [ 9–16 ] The key influencing factor in the successful formation of directed diverse assemblies is the anisotropy of nanoscale building blocks originating from the shape and unequal distribution of ligands on the surface of nanocrystals.…”

Section: Introductionmentioning

confidence: 99%

Directing Arrowhead Nanorod Dimers for MicroRNA In Situ Raman Detection in Living Cells

et al. 2020

Adv Funct Materials

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Directed self-assembled nanomaterials with biological applications have attracted great interest. Here, arrowhead gold nanorod (NR) dimers with side-by-side and end-to-end motifs (known as AHSBS and AHETE dimers, respectively) presented based on selective modification of arrowhead NRs with DNA and polyethylene glycol, possessing intense surface enhanced Raman scattering (SERS) signals, are assembled for in situ intracellular microRNA detection. The arrowhead NR dimers are capable of recognizing target microRNA in a sequence-specific manner as Raman signals significantly enhanced within dimers with both motifs. Following recognition, the dimers gradually disassemble, resulting in decreased SERS signals to achieve effective in situ Raman imaging and quantify the detection of target microRNA. The SERS intensity shows a linear relationship with intracellular target microRNA and a limit of detection of 0.011 amol ng RNA −1 for the AHETE dimer and 0.023 amol ng RNA −1 for the AHSBS dimer, respectively. The sensitivity for AHETE dimers is ≈2.1 times higher than that for AHSBS dimers, which is attributed to the small quantity of recognized molecules and stronger electrical enhancement, which causes greater SERS signals in the AHETE dimers. This approach opens up a new avenue for directed nanomaterials assembly and biological detection in living cells.

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Kinetic pathways of crystallization at the nanoscale

Cited by 175 publications

References 38 publications

Patchy Nanoparticle Synthesis and Self-Assembly

Patchy Nanoparticle Synthesis and Self-Assembly

Liquid phase transmission electron microscopy for imaging of nanoscale processes in solution

Directing Arrowhead Nanorod Dimers for MicroRNA In Situ Raman Detection in Living Cells

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