Miao Song

Miao Song
Central South University | CSU · State Key Laboratory of Powder Metallurgy

PhD

About

81
Publications
6,513
Reads
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1,042
Citations
Additional affiliations
March 2022 - present
Central South University
Position
  • Professor
April 2020 - November 2021
Pacific Northwest National Laboratory
Position
  • Researcher
July 2016 - March 2020
Pacific Northwest National Laboratory
Position
  • PostDoc Position

Publications

Publications (81)
Article
Using in situ transmission electron microscopy and electron tomography, we have studied the healing process of submicron-scale voids embedded in a cold-rolled Al–Mg–Er alloy. The results show that voids are healed successfully within 50 min at a relatively low temperature of 453 K. Quantitative analysis of the in situ micrographs reveals that the v...
Article
Dissolution and growth of Al3(Er, Zr) precipitates during tensile fatigue experiments are investigated by quasi-in situ and post-mortem scanning transmission electron microscopy with Z contrast imaging and X-ray energy dispersive spectroscopy. Al3(Er, Zr) particles are observed with both non-core-shell and core-shell structures, which were formed d...
Article
The healing kinetics of nanometer-scale voids in Al-Mg-Er and Al-Mg-Zn-Er alloy systems were investigated with a combination of in situ transmission electron microscopy and electron tomography at different temperatures. Mg was observed completely healing the voids, which were then rejuvenated to the alloy composition with further aging, in the Al-M...
Article
Full-text available
The effect of severe plastic deformation applied through friction extrusion (FE) method on an Al-Ti composite billet is summarized. Formation of layered amorphous regions and specific atomic ratios (R) of Ti/Al, in addition to some crystalline Al-Ti intermetallic compounds (IMC), e.g., TiAl3 and TiAl forming et al./Ti interfaces, are noted after th...
Article
A uranium-10 wt% molybdenum (U10Mo) alloy is one of the primary candidates for metallic fuels that would use low-enriched uranium in place of highly enriched uranium, to support nuclear nonproliferation efforts. Optimal performance of a U-based metallic nuclear fuel can be achieved by retaining the high-temperature, body-centered cubic (bcc) allotr...
Article
Forced mixing to a single-phase or supersaturated solid solution (SSS) and its prerequisite microstructure evolution in immiscible systems has been a focus of research for fundamental science and practical applications. Controlling the formation of SSS by shear deformation could enable a material design beyond conventional equilibrium microstructur...
Presentation
Full-text available
Lepidocrocite (γ-FeOOH) is a key metastable Iron (III)-oxy/hydroxide that is commonly encountered in natural environments such as reductomorphic and hydromorphic soils. Its presence in anthropogenic environments such as those found in mining industries of resource minerals, coal liquefaction, and oxidized alloy steel radioactive waste containers is...
Article
Full-text available
Significance Understanding how protein scaffolds direct mineral morphogenesis is crucial for engineering bone and tooth and would open new vistas in materials design. In the case of tooth enamel, which is the hardest tissue in the body and consists of organized bundles of coaligned apatite crystals, amyloid-like amelogenin nanoribbons are hypothesi...
Article
Disentangling the intragranular and interfacial plasticity contribution to the overall strain accommodation is crucial to understanding the microstructural evolution and mass transport upon deformation in materials with the nanoscale feature size. Here, we devise a new approach to tackle the issue by introducing shear strain gradients into Cu/Nb na...
Article
The effects of hot isostatic pressing (HIP) processing parameters on microstructure and bond strength of Al6061/Al6061 plate interfaces were systemically investigated at the micro- and nanoscale. The HIP bonding of the two aluminum plates was performed at four temperatures: 350°C, 400°C, 450°C, and 560°C. The results reveal the formation of micron...
Article
This work employs friction stir processing (FSP), a well-known severe plastic deformation technique, to selectively modify the microstructure of thin-walled, high-pressure die-cast (HPDC) aluminum alloy A380, a major HPDC alloy fabricated in the die casting sector. FSP effectively breaks down Al dendrites and acicular Si particles, creating a homog...
Article
Full-text available
Deformation processing of immiscible systems is observed to disrupt thermodynamic equilibrium, often resulting in nonequilibrium microstructures. The microstructural changes including nanostructuring, hierarchical distribution of phases, localized solute supersaturation, and oxygen ingress result from high-strain extended deformation, causing a sig...
Article
Dispersed nano-precipitates strengthen high-strength aluminum (Al) alloys but reduce ductility and formability. Joining these alloys with conventional impact (or driven) riveting has long been a challenge because the rivets may crack in ambient conditions. Rotating hammer riveting (RHR) was developed to rivet fully hardened high-strength Al alloys...
Article
The microstructural evolution under the extreme environments imposed during cold spray deposition and the microstructural recovery during post-processing annealing treatments is rather complex and not well understood. Here, Nickel-Yttria (Ni-Y2O3) cermet coatings on a 304 stainless steel (SS304) substrate were produced using cold spray technique, r...
Article
High temperature (800 °C) pre-calcination of CeO 2 support decreases the surface defects and improves the mobility of surface lattice oxygen. As a result, the supported Pt clusters have higher oxygen coverage and superior HC oxidation activity.
Article
Full-text available
Utilizing both cationic and anionic oxygen redox reactions is regarded as an important approach to exploit high‐capacity layered cathode materials with earth abundant elements. It has been popular strategies to effectively elevate the oxygen redox activities by Li‐doping to introduce unhybridized O 2p orbitals in NaxMnO2‐based chemistries or enabli...
Article
Extrusion of unhomogenized castings of the 7075 aluminum (Al) alloy has been accomplished using shear assisted processing and extrusion (ShAPE). The simultaneous plastic deformation and heat generation during ShAPE rapidly fracture and dissolve interdendritic and intragranular secondary phases of Al-Zn-Mg-Cu, accomplishing homogenization in seconds...
Preprint
Full-text available
Injecting fluids into deep underground geologic structures is a critical component to development of long-term strategies for managing greenhouse gas emissions and facilitating energy extraction operations. Recently, we reported that metal-organic frameworks are low-frequency absorptive acoustic metamaterial that may be injected into the subsurface...
Article
High-performance and low-cost transition metal (TM) layered oxides using earth abundant elements are promising cathodes for Na-ion batteries. However, it is challenging to obtain desired materials because the large Na size, different Na occupations and various layer stacking sequences multiply the complication in determining the structure of a give...
Article
Full-text available
The solid–electrolyte interphase (SEI), a layer formed on the electrode surface, is essential for electrochemical reactions in batteries and critically governs the battery stability. Active materials, especially those with extremely high energy density, such as silicon (Si), often inevitably undergo a large volume swing upon ion insertion and extra...
Article
The selective dehydration of 2,3-butanediol (2,3-BDO) to 3-buten-2-ol (3B2oL) was investigated over indium oxide (In2O3) catalysts. The effect of different process parameters such as reaction temperature, weight hourly space velocity (WSHV), and carrier gas on the product distribution during the dehydration of 2,3-BDO was demonstrated. Highest sele...
Poster
Full-text available
The adsorption of solvated ions onto solid substrates is a phenomenon that controls many natural processes in nature and we have taken advantage of this to create, manipulate and manufacture materials in many areas of daily life. Unfortunately, we have only been able to observe equilibrium snap-shots of adsorption events through the various analyti...
Article
Interfaces and their misfit defects determine the material properties of a wide range of applications, such as electronic devices, photocatalysts, and structural materials. However, current atomic-level understanding of interfacial structures is limited. Here we reveal that a special interfacial structure, a mismatched but oriented interface formed...
Article
Shear deformation at the nanoscale has practical applications due to the ability of shear strains to significantly change the microstructures and textures of the deforming materials, and for material removal processes at this scale. Here we demonstrate nanomechanical scratching with atomic force microscopy (AFM) as a tool to impose large shear stra...
Article
In article number 2003548, Peter V. Sushko, Dongsheng Li and co‐workers report an atomic defect‐free gradient structure that extends across the bulk of anatase crystals, creating a 3D internal electric field that enables an up to 100% fraction of photo‐active volume, and leads to anomalously efficient electron‐hole separation across the bulk materi...
Article
Nature is abundant with multi-functional and efficient catalysts such as redox enzymes which scientists wish to emulate with synthetic catalysts. One approach is to tune molecular catalysts through metal-organic ligands but there are grand challenges of molecular catalysts for real applications in energy field. Here we demonstrate a robust inorgani...
Article
Full-text available
This study investigates the elemental composition and surface morphology of solid tribochemical films formed on steel surfaces. The reversible addition-fragmentation chain transfer (RAFT) method was used to synthesize nine different metal-free polymers, which were blended into commercial base oils. The polymers were either homopolymers of dodecyl m...
Preprint
Full-text available
Protein scaffolds direct the organization of amorphous precursors that transform into mineralized tissues, but the templating mechanism remains elusive. Inspired by a model of tooth enamel, wherein amyloid-like amelogenin nanoribbons guide apatite mineralization, we investigated the impact of nanoribbon structure and chemistry on amorphous calcium...
Article
Full-text available
Crystallization by particle attachment (CPA) is a frequently occurring mechanism of colloidal crystallization that results in hierarchical morphologies1–4. CPA has been exploited to create nanomaterials with unusual properties4–6 and is implicated in the development of complex mineral textures1,7. Oriented attachment7,8—a form of CPA in which parti...
Article
Manganese‐rich layered oxide materials hold great potential as low‐cost and high‐capacity cathodes for Na‐ion batteries. However, they usually form P2 phase and suffer from fast capacity fade. In this work, an O3 phase sodium cathode has been developed out of a Li and Mn‐rich layered material by leveraging the creation of transition metal (TM) and...
Article
Manganese‐rich layered oxide materials hold great potential as low‐cost and high‐capacity cathodes for Na‐ion batteries. However, they usually form P2 phase and suffer from fast capacity fade. In this work, an O3 phase sodium cathode has been developed out of a Li and Mn‐rich layered material by leveraging the creation of transition metal (TM) and...
Article
Full-text available
The development of catalysts free of platinum-group metals and with both a high activity and durability for the oxygen reduction reaction in proton exchange membrane fuel cells is a grand challenge. Here we report an atomically dispersed Co and N co-doped carbon (Co–N–C) catalyst with a high catalytic oxygen reduction reaction activity comparable t...
Article
Polymorphs widely exist in nature and synthetic systems and are well known to determine material properties. Understanding phase transformation mechanisms among polymorphs enables the design of structures and tuning of phases to tailor material properties. However, current understanding is limited due to the lack of direct observations of the struc...
Article
Full-text available
The biotic or abiotic reduction of nano-crystalline 2-line ferrihydrite (2-line FH) into more thermodynamically stable phases such as lepidocrocite-LP, goethite-GT, magnetite-MG, and hematite-HT plays an important role in the geochemical cycling of elements and nutrients in aqueous systems. In our study, we employed the use of in situ liquid cell (...
Article
Full-text available
Novel magnetic topological materials pave the way for studying the interplay between band topology and magnetism. However, an intrinsically ferromagnetic topological material with only topological bands at the charge neutrality energy has so far remained elusive. Using rational design, we synthesized MnBi8Te13, a natural heterostructure with [MnBi...
Article
Integrating dual-modal imaging and photothermal effect within a single nanosystem is an enormous challenge for current nanomedicine application. Herein, non-toxic amorphous Ag2-xCuxS quantum dots (QDs) possessing near-infrared fluorescence (NIRF), enhanced photothermal and photoacoustic (PA) performance, as “one-in-all” nanomedicines, are designed...
Article
PbSe materials are widely researched and utilized in visible-infrared photodetectors, displays, transistors, thermoelectric devices, and photovoltaics. However, the instability of PbSe limits practical utilization. Understanding the decomposition mechanisms of PbSe enables the guiding of targeted design to improve its stability. Here, we studied th...
Article
Vapor-liquid-solid (VLS) method is vastly employed to grow hierarchical structures with unique properties. However, key questions remain, such as what controls the branched structures and what the roles of catalyst droplet size are during the growth. Here, an in-depth understanding of the kinetics of the nucleation, growth, and subsequent coalescen...
Article
Electrocatalytic hydrogenation is a particularly attractive approach for converting the most unstable compounds in biogenic feedstocks at ambient conditions without external hydrogen. Here, we synthesized a variety of carbon-supported transition metal catalysts and characterized their activity for the electrocatalytic hydrogenation of a series of m...
Article
The artificial photosynthesis by semiconductor oxide photocatalysis is presently challenging due to low CO2 conversion rates and poor product selectivity. To promote CO2 reduction, Pt/TiO2 has been deemed as a classical photocatalyst. In this work, we restudy Pt/TiO2 in a case of thermally-assisted photocatalytic reduction of CO2 and reveal a diffe...
Article
Natural and synthetic nanoparticles composed of five-fold twinned crystals domains have unique properties. The formation mechanism of these five-fold twinned nanoparticles is poorly understood. We used in situ high-resolution transmission electron microscopy combined with molecular dynamics simulations to demonstrate that five-fold twinning occurs...
Article
We demonstrate a Humidity Modulated Solvent Evaporation (HMSE) approach to promote the nucleation and growth of CC3 crystals. This approach relies on the gradual evaporation of dichloromethane (solvent) from a diluted concentration of CC3 precursors deposited on aluminum foil. The slow solvent evaporation allowed enough time for the organization an...
Article
Full-text available
Acid‐functionalization of carbon support allows enhancing the electrocatalytic activity of Pd to hydrogenate benzaldehyde to benzyl alcohol in proportion to the concentration of Brønsted acid sites. In contrast, the hydrogenation rate is not affected when H 2 is used as reduction equivalent. The different response to catalyst properties is shown to...
Article
Full-text available
Mit vereinten Kräften: Eine Reihe von Pd/C‐Katalysatoren mit modifizierten Kohlenstoff‐Trägermaterialien wurde für die elektrochemische Hydrierung von Benzaldehyd eingesetzt. Die Anwesenheit von Säuregruppen an der Metall/Träger‐Grenzfläche erhöht die katalytische Aktivität von Pd aufgrund der Mitwirkung von Brønsted‐sauren Zentren im Hydrierungsme...
Article
Full-text available
Titanium oxide is the most widely used material for photocatalytic applications due to its low cost and environmental friendliness. One of the grand challenges to improve its energy conversion efficiency is to utilize more visible light while inhibiting the recombination of photogenerated electrons and holes. A one‐step hydrosolvothermal method is...
Article
Electrolysis in neutral pH solutions (e.g., wastewater and seawater) presents a transformative way for environmentally friendly, cost-effective hydrogen production. However, one of the biggest challenges is the lack of active, robust hydro-gen evolution reaction (HER) catalysts. Herein we present a novel catalyst with dual active sites of MoP2 and...
Article
TiO2 Phase Transformation Mechanisms at Atomic Scale under Heating and Electron Beam Irradiation - Volume 25 Supplement - Miao Song, Dongsheng Li
Article
Using In situ Gas Heating TEM to Investigate Compound Nanowire Growth Mechanisms - Volume 25 Supplement - Miao Song, Jaewon Lee, Dongsheng Li
Article
During the self‐assembly process, the dynamic behavior of nanoparticles is correlated with the van der Waals force over both short (≈2–3 nm) and relatively long particle separations (<≈13 nm in this work). In article number 1901966, Jaehun Chun, Dongsheng Li, and co‐workers investigate how Ag nanoparticles self‐assemble into superlattices with shor...
Article
Dislocation behaviors, which determine mechanical properties of materials, are generally believed to be controlled by long-range lattice translational order. For intermetallic compounds, however, their structures are often closely related to atomic environments, with the short-range configurations possibly deviating from the long-range translationa...
Article
Nanoparticle (NP) superlattices have attracted increasing attention due to their unique physicochemical properties. However, key questions persist regarding the correlation between short‐ and long‐range driving forces for nanoparticle assembly and resultant capability to predict the transient and final superlattice structure. Here the self‐assembly...
Article
The physical and chemical properties of metal nanomaterials are closely tied to their size and shape. A well-controlled synthesis protocol is needed to control over particle morphologies. Although the shape and size of metal nanostructures have been controlled by various pathways, such as soft templates and seed-mediated protocol method, most of th...
Article
Solar photocatalytic production of fuels from CO2 and H2O remains a challenging goal. Herein we report a strategy to co-modify TiO2 with oxygen vacancies and CoOx nanoclusters for enhanced photothermocatalytic reduction of CO2. The TiO2-x/CoOx material exhibits prominently enhanced activity for the yield of CH4 and CO under ultraviolet irradiation...
Article
Understanding the growth mechanism of noble metal nanocrystals during solution synthesis is of significant importance for shape and property control. However, much remains unknown about the growth pathways of metal nanoparticles due to the lack of direct observation. Using an in situ transmission electron microscopy technique, we directly observed...
Article
Superlattice structures formed by nanoparticle (NP) self-assembly have attracted increasing attention due to their potential as a class of nanomaterials with enhanced physicochemical properties tailored by the assembly structure. However, many key questions remain regarding the correlation between the dynamics of individual NPs and emerging superla...
Article
In this study, a novel shape memory polymer (SMP), eggshell membrane (ESM), with macroscopic mesh structures and microscopic crosslinked protein fibers, has shown water-stimulated shape recovery characteristics. Our results show that the collagen triple-helical molecular chains and disulfide-rich motifs in the ESM function as net-points retaining e...
Article
Modifying the structure of photocatalyst to tune its electronic and physicochemical properties is an effective approach for efficient photocatalysis. Herein, we modify the structure of g-C3N4 by partially replacing the corner site C atom with P heteroatom via a simple thermal phosphorization method. Comparing with the pristine g- C3N4, the g-C3N4 a...
Article
We grew binary PbSe nanowires in an in situ gas-heating cell in a transmission electron microscope and elucidated species dependent mass transport pathways and correlations among supersaturation, nucleation, and growth kinetics, enabling structure control.
Article
The twinned structure of nanoscale metal particles is considered to be an important factor in the formation of novel mor-phologies. Nevertheless, most studies are focused on the growth of nanoparticles with stable twinned structures, and little is known about the intrinsic relationship between the morphological evolution and the strain relaxation i...
Article
the yield of CH 4 and CO under ultraviolet irradiation at elevated temperature of 393 K, which is 111.3-and 13.2-times greater yield of CH 4 and CO, respectively than the conventional photocatalytic process at 298 K, and 175.1-and 2.9-times greater yield of CH 4 and CO, respectively than the pristine TiO 2 under the same photothermocatalytic condit...
Article
Superlattice structures formed by nanoparticle (NP) self-assembly have attracted increasing attention due to their potential as a class of nanomaterials with enhanced physicochemical properties tailored by the assembly structure. However, many key questions remain regarding the correlation between the dynamics of individual NPs and emerging superla...
Article
Modifying the structure of photocatalyst to tune its electronic and physicochemical properties is an effective approach for efficient photocatalysis. Herein, we modify the structure of g-C3N4 by partially replacing the corner site C atom with P heteroatom via a simple thermal phosphorization method. Comparing with the pristine g-C3N4, the g-C3N4 af...
Article
In this study, a novel shape memory polymer (SMP), eggshell membrane (ESM), with macroscopic mesh structures and microscopic crosslinked protein fibers, has shown water-stimulated shape recovery characteristics. Our results show that the collagen triple-helical molecular chains and disulfide-rich motifs in the ESM function as net-points retaining e...
Article
Understanding the growth mechanism of noble metal nanocrystals during solution synthesis is of significant importance for shape and property control. However, much remains unknown about the growth pathways of metal nanoparticles due to lack of direct observation. Using an in-situ transmission electron microscopy technique, we directly observed Ag n...
Article
Oriented attachment (OA) of nanocrystals is a widely recognized non-classical crystallization mechanism. A fundamental understanding of the forces that govern the dynamics of particle movement, co-alignment, and attachment is needed to control crystal growth by OA, but is currently lacking. Using atomic force microscopy-based dynamic force spectros...
Article
Precipitates and their associated strain fields significantly influence mechanical properties and, conse-quently, the industrial performance of aluminum alloys. In this work, we present a direct measurement of strains induced by η' and η precipitates in an Al-Zn-Mg-Cu alloy using aberration-corrected high-resolution transmission electron microscopy...