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Nanostructured metal oxide-based materials as advanced anodes for lithium-ion batteries

Quasi-dynamic mode of nanomembranes for time-of-flight mass spectrometry of proteins

Critical aspects in the production of periodically ordered mesoporous titania thin films

Superatomic orbitals in sixteen-coordinate M@Li₁₆ bonded by metallic bonds

High performance bipolar resistive switching memory devices based on Zn₂SnO₄ nanowires

Microfluidic fabrication of cationic curcumin nanoparticles as an anti-cancer agent

Energetics and dynamics of a new type of extended line defects in graphene

Edge effects control helical wrapping of carbon nanotubes by polysaccharides

Microstructure evolution and advanced performance of Mn₃O₄ nanomorphologies

A facile synthesis of PLGA encapsulated cerium oxide nanoparticles: release kinetics and biological activity

Morphology-controlled synthesis of ZnO replicas with photonic structures from butterfly (Papilio paris) wing scales for tunable optical properties

Synthesis of CuO nanowalnuts and nanoribbons from aqueous solution and their catalytic and electrochemical properties

Water flow enhancement in hydrophilic nanochannels

Chemiresistive response of silicon nanowires to trace vapor of nitro explosives

Solvothermal synthesis of Pt–Pd alloys with selective shapes and their enhanced electrocatalytic activities

Facetted patchy particles through entropy-driven patterning of mixed ligand SAMS

Nanoscale charge distribution and energy band modification in defect-patterned graphene

Dense and vertically-aligned centimetre-long ZnS nanowire arrays: ionic liquid assisted synthesis and their field emission properties

Controlled fabrication of silver nanoneedles array for SERS and their application in rapid detection of narcotics

Noble-metal-free carbon nanotube-Cd_0.1Zn_0.9S composites for high visible-light photocatalytic H₂-production performance

A flexible UV nanosensor based on reduced graphene oxide decorated ZnO nanostructures

Regulating DNA translocation through functionalized soft nanopores

Synthesis and characterization of novel dual-responsive nanogels and their application as drug delivery systems

Nanoscale investigation of the electrical properties in semiconductor polymer–carbon nanotube hybrid materials

Simplifying the growth of hybrid single-crystals by using nanoparticle precursors: the case of AgI

In vivo studies on angiogenic activity of two designer self-assembling peptide scaffold hydrogels in the chicken embryo chorioallantoic membrane

Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets

The as-prepared gold cluster-based fluorescent sensor for the selective detection of As^III ions in aqueous solution

Fabrication of “strong” columnar Cu_2−xSe superstructures assisted by inorganic ligands

A comprehensive understanding of melting temperature of nanowire, nanotube and bulk counterpart

Nanoscale characterization and magnetic reversal mechanism investigation of electrospun NiFe₂O₄ multi-particle-chain nanofibres

Template synthesis of SnO₂/α-Fe₂O₃ nanotube array for 3D lithium ion battery anode with large areal capacity

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Nanoscale Vol - 4 Issue - 7

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A comprehensive understanding of melting temperature of nanowire, nanotube and bulk counterpart

Content Provider	Royal Society of Chemistry (RSC)
Author	Yang, Guowei Zhou, Guanghui Ouyang, Gang
Copyright Year	2012
Abstract	Surface energies of nanostructures are of considerable interest, and thermodynamic methods have provided valuable insight into the physics and chemistry of these systems. Although the effect of surface energy on melting behaviors of nanostructures has been widely investigated in theoretical calculations and simulations, from the thermodynamics at the nanometer scale point of view, the comprehensive understanding of the fundamental physical and chemical issues involved in nanostructures' melting is still lacking. For instance, nanostructures with negative curvature, such as nanotubes, show different melting behaviors compared with the nanostructures with positive curvature such as nanowires, and both nanotubes and nanowires exhibit abnormal melting temperature compared with that of the bulk counterparts. Herein, we put forward a general model to elucidate the melting temperature of the nanostructures with positive and negative curvatures based on the surface energy at the nanometer. Further, the surface mean square relative atomic displacement (MSRD) of these nanostructures has been studied from the perspective of the size-dependent cohesive energy consideration, which can provide the atomic understanding of the nanostructures' melting. Theoretical analyses indicate that both melting temperatures of the nanostructures with the positive and negative curvatures decrease with decreasing dimensionality, and the surface MSRDs show different size effects in the systems with the positive and negative curvatures, respectively. The melting temperature of the surface with the negative curvature is higher than that of the surface with the positive curvature, and both melting temperatures are smaller than that of the bulk counterpart when the size of nanostructures is less than a threshold value. The unique melting behaviors of nanostructures are attributed to the size- and curvature-dependent surface energy of nanostructures. These results provide new insight into the fundamental understanding of the melting temperature of nanostructures.
Starting Page	2748
Ending Page	2753
Page Count	6
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	4
Issue Number	8
Journal	Nanoscale
DOI	10.1039/c2nr30095h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Computational chemistry Nanometre Curvature Physics Surface energy
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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Obvious Temperature Difference Along a Pb Cluster-Decorated Carbon Nanowire

Transformation of a SiC nanowire into a carbon nanotube

Obvious Temperature Difference Along a Pb Cluster-Decorated Carbon Nanowire

Direction-resolved radiation from polarization-controlled surface plasmon modes on silver nanowire antennas

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Hybrid transparent electrodes of silver nanowires and carbon nanotubes: a low-temperature solution process

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From Si nanowire to SiC nanotube

A comprehensive understanding of melting temperature of nanowire, nanotube and bulk counterpart

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