High-resolution Transmission Electron Micrographs Research Articles

Rubbing-induced site-selective deposition of 2D material patterns on nanomembranes

2D-layered materials (e.g., graphene and transition metal dichalcogenides) have attracted huge attention due to their unique mechanical and electrical properties. Emerging research efforts, which seek to combine device characterization and high-resolution electron micrography analysis for 2D-layered device features, demand nano/microlithographic techniques capable of producing ordered 2D material patterns on ultrathin membranes with nanoscale thicknesses. However, such membranes are so fragile that most conventional lithographic techniques can be hardly performed on them to generate 2D material patterns. Our previous works have demonstrated that the rubbing-induced site-selective (RISS) deposition method can produce arbitrary 2D semiconductor (e.g., MoS2 and Bi2Se3) patterns on regular device substrates. This fabrication route prevents the vulnerable 2D-layered structures from the detrimental damage introduced by plasma etching and resist-based lithography processes. In this work, we explore the applicability of RISS for directly producing 2D material patterns on nanomembranes. Specifically, this work shows that a polymeric interfacing layer on the rubbing template features, which can effectively prevent stress concentration during the rubbing process, is crucial to successful implementation of RISS processes on nanomembranes. Furthermore, we carried out the mechanics simulation of the Von Mises stress and pressure distribution on the RISS-processed membrane to identify the optimal rubbing load, which can generate sufficient triboelectric charge for material deposition but no damage to the membrane. Using this approach, we have successfully demonstrated the deposition of Bi2Se3 patterns on 25 nm SiOx nanomembranes and high-resolution transmission electron micrography characterization of the crystallographic structures.

Atomistic simulations of structure and motion of twin interfaces reveal the origin of twinning in NiTi shape memory alloys

Shape memory alloys (SMAs) are functional materials featuring unique shape recovery properties that make them suitable for key industrial applications. The essential process controlling this fascinating performance is microstructural twinning. Some twin systems are much more frequently observed than others, yet a fundamental mechanistic understanding of this evidence is missing, which hampers SMA design. Here, we consider the prototypical NiTi SMA to show that the emergence of twinning can be strongly affected by twin interface mobility. In this work, we adopt an integrated approach combining crystallographic theory, state-of-the-art atomistic modelling, topological model, and validation with high-resolution transmission-electron micrographs. Atomistic simulations confirm that the occurrence of twins is dictated by the driving force for twin boundary motion rather than interfacial energy. Moreover, our findings settle long-standing questions by elucidating the propagation mechanisms of twin interfaces, which the established martensite crystallography and kinetic theories could not address conclusively. The newly discovered understanding of the role of interface mobility in twin formation can be used to predict variant selection and guide the design of SMAs with improved functional performance.

Effect of Carrier Gas on the Gas Sensing Performance of Co1−2xNixMnxFe2−yCeyO4 Double-Substitution Spinel in Flammable Gases and Volatile Organic Compounds

The presence of high concentrations of flammable gases and volatile organic compounds in the atmosphere has been widely reported to be detrimental to human survival. A lot of research effort has been put toward finding an efficient means of quick detection of these gases below their ‘immediately dangerous to life or health’ concentrations. Detecting these gases in an oxygen-deficient environment is a crucial task to consider and has been overlooked. In this research, double-substitution spinel with the chemical formula Co1−2xNixMnxFe2−yCeyO4, where 0 ≤ x = y ≤ 0.3, was prepared via the glycol-thermal technique. The final products, following appropriate substitution, were CoFe2O4 (dried naturally), CoFe2O4 (dried with infrared lamp), Co0.8Ni0.1Mn0.1Fe1.9Ce0.1O4, Co0.6Ni0.2Mn0.2Fe1.8Ce0.2O4 and Co0.4Ni0.3Mn0.3Fe1.7Ce0.3O4 spinel ferrites. The X-ray diffractometry (XRD), high-resolution transmission electron micrographs (HRTEM) and X-ray photoelectron spectroscopy (XPS) of the samples confirmed the formation of the spinel. The gas sensing performance of these samples was tested at the operating temperature of 225 °C toward liquefied petroleum gas (LPG), ammonia, ethanol and propanol. The Co0.8Ni0.1Mn0.1Fe1.9Ce0.1O4-based sensor was selective to LPG, with a high response of 116.43 toward 6000 ppm of LPG when helium was used as the carrier gas, 3.35 when dry air was the carrier gas, 4.4 when nitrogen was the carrier gas, but it was not sensitive when argon was used as the carrier gas.

Polycrystalline phases grown in-situ engendering unique mechanism of charge storage in polyaniline-graphite composite

We report on a simple surfactant/template free chemical route for the synthesis of semi-polycrystalline polyaniline-graphite (SPani-graphite) composite and its application as an electroactive material in electrochemical charge storage. The synthesized material exhibits well-defined poly-crystallographic lattices in high resolution transmission electron micrographs and sharp peaks in x-ray diffraction spectra suggesting crystalline nature of the material. The specific capacitance computed from the galvanostatic charge-discharge (GCD) data obtained from 3-electrode cell configuration using 1 M aq. Na2SO4 as an electrolyte was 111.4 F g−1 at a current density of 0.1 A g−1 which rises to 269 F g−1 at an elevated current density of 1.0 A g−1. A similar pattern of increase in the specific capacitance values with an increase in the current density was observed in the results obtained from 2-electrode symmetric device configuration using polymer gel electrolyte (xanthan gum in 1 M aq. Na2SO4). The specific capacitance computed from the GCD data obtained from the device configuration was 20 F g−1 at the current density of 1.0 A g−1. The device delivers an energy density of 1.7 Wh kg−1 and a power density of 2.48 kWh kg−1 at an applied current density of 0.5 A g−1 suggesting an excellent rate capability and power management. In addition, the device exhibits ⁓92 % specific capacitance retention up to 8000 continuous GCD cycles and ⁓80 % coulombic efficiency up to 10,000 continuous GCD cycles indicating excellent cycling stability. The unique feature of increasing specific capacitance with respect to applied current density is attributed to the presence of semi-polycrystalline phases in the SPani-graphite matrix. The material behaves as a surface redox supercapacitor and its unique mechanism of charge storage is discussed in detail in the article.

Solution combustion synthesis of Dy-doped ZnO nanoparticles: An investigation of their structural, optical and photoluminescence characteristics

Undoped and Dy-doped ZnO nanoparticles were synthesized by solution combustion technique using urea as fuel. The synthesized nanoparticles were examined by various characterization tools for their structural, optical and photoluminescence properties. All the nanoparticles are found to possess the hexagonal wurtzite structure of ZnO with crystallite sizes in the range of 16–23 nm. The structural parameters viz. lattice constants, bond lengths, bond angles, and lattice strain of the nanoparticles have been evaluated. The high-resolution transmission electron micrographs and selected area electron diffraction patterns confirm the high crystallinity of the nanoparticles. The optical bandgap estimated from the diffuse reflectance spectra using the Kubelka-Munk method is found to be 2.90 eV for the undoped ZnO. A sharp narrow UV emission peak at ∼396 nm originating from the excitonic recombination is observed in the PL spectra of all the nanoparticles. The visible emission peaks in the PL spectra of undoped ZnO are attributed to different native defects, whereas in Dy-doped ZnO nanoparticles, the visible emissions (blue, yellow and red) are assigned to the 4f intrashell transitions in Dy3+ ions. It has been concluded that the solution combustion synthesized 5 mol% Dy-doped ZnO can be a promising material for white luminescence applications.

Correlative microscopy and monitoring of segregation processes in optoelectronic semiconductor materials and devices

The present work comprises a practical tutorial on the topic of correlative microscopy and its application to optoelectronic semiconductor materials and devices. For the assessment of microscopic structure–property relationships, correlative electron microscopy, combined also with scanning-probe and light microscopy, exhibits a collection of indispensable tools to analyze various material and device properties. This Tutorial describes not only the various microscopy methods but also the specimen preparation in detail. Moreover, it is shown that electron microscopy can serve to monitor phase segregation processes on various length scales in semiconductor nanoparticles and thin films. Algorithms used to extract phase information from high-resolution transmission electron micrographs are explained.

Interface engineering in epitaxial growth of sputtered β-Ga2O3 films on Si substrates via TiN (111) buffer layer for Schottky barrier diodes

The native amorphous silicon oxide (SiO2) layer formed on the Si substrate leads to the (100) preferred orientation for β-phase gallium oxide (β-Ga2O3), which encounters various defects in β-Ga2O3, such as twin boundaries and stacking faults etc. The (111) preferred orientation of titanium nitride (TiN) hetero-buffer layer can be used in the interface between β-Ga2O3 and Si substrates to reduce the lattice mismatch between them and increase the (˗201) preferred orientation for β-Ga2O3. The lattice mismatch between TiN (111) and β-Ga2O3 (˗201) is 0.76%, which is less than the β-Ga2O3 (˗201)/Si (111) about ˗6.3%. The β-Ga2O3 and TiN films were grown using radio-frequency magnetron sputtering on Si substrates, which possess polycrystalline nature as revealed using X-ray diffraction patterns and high-resolution transmission electron micrographs. The optimal parameters are found as, process atmosphere: Ar = 10 sccm, RTA: 800 °C for β-Ga2O3/TiN (300 nm)/Si. This work highlights the effect of the TiN hetero-buffer layer, the process atmosphere, and annealing temperatures on the microstructural and surface morphology of β-Ga2O3 films. The lateral Schottky barrier diode (SBD) were fabricated using the optimized β-Ga2O3/TiN (300 nm)/Si film. The Baliga's Figure of Merit (BFOM) of the lateral SBD is 7.60 × 10−2 kW/cm2, which exhibits 4 order of BFOM higher than that of β-Ga2O3/Si SBD due to interface engineering. The β-Ga2O3/TiN (300 nm)/Si hetero-structure demonstrates a promising material to be employed in the next generation β-Ga2O3 based power devices.

Effect of (Ce, Dy) co-doping on the microstructural, optical and photoluminescence characteristics of solution combustion synthesized ZnO nanoparticles.

Solution combustion synthesized ZnO nanoparticles with Ce, Dy doped and co-doped with varying dopant concentrations were characterized for their microstructural, optical and photoluminescence characteristics. The synthesized nanoparticles have been found to match the standard hexagonal wurtzite structure of ZnO. The lattice fringes in the high-resolution transmission electron micrographs and the bright spotty rings in the selected area electron diffraction pattern authenticate the high crystallinity of the nanoparticles. The diffuse reflectance spectroscopy provides the energy bandgap for the undoped ZnO to be 3.18 eV, decreasing upon doping and co-doping. A sharp narrow UV emission peak at ~ 398 nm originating from the excitonic recombination is found in the PL spectra of the nanoparticles. The visible emission peaks in the PL spectra are assigned to f-d and f-f electron transitions of Ce3+ and Dy3+ ions, respectively, in addition to different native defects in ZnO. The visible emissions (blue, yellow and red) have been found to improve upon (Ce, Dy) co-doping, and therefore (Ce, Dy) co-doped ZnO nanoparticles can be considered as a promising luminescent material for the development of energy-saving light sources.

An investigation into the hybrid architecture of Mn-Co nanoferrites incorporated into a polyaniline matrix for photoresponse studies.

In this study, an enhanced photoresponse was observed in the Mn-Co Nanoferrites (MCFs)-Polyaniline (PANI) nanohybrid architecture due to the formation of interface between PANI and MCFs, which provided a conduction pathway for the movement of charge carriers, and these interfaces were observed in a high-resolution transmission electron micrograph (HR-TEM). X-ray photoelectron spectroscopy (XPS) suggests that the carbon (C 1s) of the MCF-PANI nanohybrid shows peaks at 287.80 eV for CO, 286.17 eV for C-O, 285.24 eV for C-N, 284.50 eV for the sp3 hybridized carbon (C-C/C-H) and 283.84 eV for the sp2 hybridized carbon (CC). Current-voltage (I-V) curves reveal an ohmic nature of the MCF-PANI nanohybrid photodetector device. The photoresponse measurements were analyzed using the trap depth concept, demonstrating that the conductive polymer increases the photoconduction mechanism efficiency of MCFs. The constructed photodetector device exhibits a high photoresponsivity of 22.69 A W-1, a remarkable detectivity of 1.36 × 1012 cm Hz1/2 W-1 and a fast rise/decay time of 0.7/0.8 s. The excellent performance of the as-fabricated photodetector device could be explained by the intimate interaction between MCFs and PANI at their interface.

The Stacking Faulted Nature of the Narrow Gap Semiconductor Sc2Si2Te6

AbstractCrystals of Sc2Si2Te6 have been grown and its crystal, micro‐ and electronic structures were investigated. The layered character of the title compound exhibits stacking faults that impede a full structural characterization by single crystal X‐ray diffraction due to diffuse scattering. Based on high resolution transmission electron micrographs and diffraction patterns, the stacking faulted nature of the real structure of Sc2Si2Te6 has been revealed. Different stacking models were derived from the idealized, faultless structure and the stacking disorder was quantitatively analyzed by Rietveld refinement of powder X‐ray diffraction patterns. An energetic comparison of the stacking models by density functional theory is in line with the experimental observations. Further, the bonding situation was investigated by electronic structure calculations. Sc2Si2Te6 is a narrow gap semiconductor with an indirect band gap of 0.65 eV.

Understanding the role of exhaust gas recirculation in gasoline/diesel dual-fuel combustion soot features

Exhaust gas recirculation (EGR) can not only mitigate the pressure rise rate but also reduce the NO x emissions in dual-fuel combustion, especially at high loads. With the introduction of EGR, the thermal, chemical, and dilution effects may alter the soot oxidation reactivity and related features. However, little research has been conducted on the effect of EGR on dual-fuel combustion soot features. The paper targets this gap by assessing the oxidation reactivity, morphology and nanostructure, and oxygenated surface functional groups of particulates from dual-fuel combustion with various EGR ratios. The results from thermogravimetric analysis showed that increasing EGR ratios decreased the mass distribution of volatile organic fraction and soot oxidation reactivity under the operating point. This indicated that introducing EGR in dual-fuel combustion would increase the regeneration temperature of diesel particulate filters. Owing to the dilution and thermal effects, mean primary particle diameter gradually increased with the increasing EGR ratio. Soot particulates produced by higher EGR ratios tended to a more graphitic structure, characterized by longer fringe length but smaller tortuosity from high resolution transmission electron micrograph (HRTEM) images. The Raman results also verified the observations from HRTEM. In addition, the concentration of C-OH slightly reduced with increasing EGR ratio, while that of C=O showed no clear trend.

Structural analysis and magnetic-microwave absorption properties of natural mineral-derived silica-coated magnetite nanocomposites

Herein, a green synthesis method to prepare silica-coated magnetite nanocomposites by employing ironstone (an Indonesian natural resource) and an industrial by-product of zircon sand purification is reported. The X-ray diffraction pattern confirmed the formation of the magnetite phase, with an increased lattice constant after the coating process. The absorbance peaks of Fourier transform infrared spectra and the clear boundary in high-resolution transmission electron micrographs suggested that no chemical reaction was involved between Fe3O4 and SiO2. Silica coating caused a decrease in magnetic saturation and initial susceptibility and an increase in the coercivity, remanence, and domain magnetic size of composites. The microwave absorption peaks for SiO2 and Fe3O4 nanoparticles were observed at approximately 10.00 and 11.00 GHz, respectively. Fe3O4/SiO2 nanocomposites exhibited both absorption peaks with improved absorption and a tunable frequency. Furthermore, the combination of Fe3O4 as a magnetic and SiO2 as a dielectric material provided an advantage in adjusting the direction of the magnetic dipole moment and electric dipole polarization for specific applications.

Atomic Layer Deposition of Nanolayered Carbon Films

In this paper, carbon thin films were grown using the plasma-enhanced atomic layer deposition (PE-ALD). Methane (CH4) was used as the carbon precursor to grow the carbon thin film. The grown film was analyzed by the high-resolution transmission electron micrograph (TEM), X-ray photoelectron spectroscopy (XPS) analysis, and Raman spectrum analysis. The analyses show that the PE-ALD-grown carbon film has an amorphous structure. It was found that the existence of defective sites (nanoscale holes or cracks) on the substrate of copper foil could facilitate the formation of nanolayered carbon films. The mechanism for the formation of nanolayered carbon film in the nanoscale holes was discussed. This finding could be used for the controlled growth of nanolayered carbon films or other two-dimensional nanomaterials while combining with modern nanopatterning techniques.

Oxidation and nanostructural characterization of exhaust particulates from gasoline/diesel dual-fuel combustion

It is commonly accepted that gasoline/diesel dual-fuel combustion is an effective path to simultaneously reduce particulate matter and nitrogen oxides. However, how such a combustion mode affects soot oxidation reactivity and related features is not well known. This work focused on physicochemical characteristics of carbonaceous particulates emitted by a gasoline/diesel dual-fuel engine with 20% and 40% gasoline premixed substitutions (G20 and G40, respectively), under different engine speeds. Thermogravimetric (TG) results showed that under both engine speeds, particles from dual-fuel combustion were easier to be oxidized and had higher volatile organic fraction (VOF) than diesel particles, following the order G40 > G20 > diesel. Also, particles at lower engine speed exhibited higher oxidation reactivity and VOF. Samples from dual-fuel combustion exhibited a disordered nanostructure, characterized by shorter fringe length but larger tortuosity from high-resolution transmission electron micrograph images and higher ID1/IG and AD1/AG values from Raman spectroscopy. The structure–property relationship showed that more amorphous nature in the nanostructure of dual-fuel soot brought about the increase in oxidative reactivity. However, surface oxygen content obtained by X-ray photoelectron spectroscopy was not a significant indicator affecting soot oxidation reactivity in this work.

Layer and spontaneous polarizations in perovskite oxides and their interplay in multiferroic bismuth ferrite.

We review the concept of surface charge, first, in the context of the polarization in ferroelectric materials and, second, in the context of layers of charged ions in ionic insulators. While the former is traditionally discussed in the ferroelectrics community and the latter in the surface science community, we remind the reader that the two descriptions are conveniently unified within the modern theory of polarization. In both cases, the surface charge leads to electrostatic instability-the so-called "polar catastrophe"-if it is not compensated, and we review the range of phenomena that arise as a result of different compensation mechanisms. We illustrate these concepts using the example of the prototypical multiferroic bismuth ferrite, BiFeO3, which is unusual in that its spontaneous ferroelectric polarization and the polarization arising from its layer charges can be of the same magnitude. As a result, for certain combinations of polarization orientation and surface termination, its surface charge is self-compensating. We use density functional calculations of BiFeO3 slabs and superlattices, analysis of high-resolution transmission electron micrographs, and examples from the literature to explore the consequences of this peculiarity.

A large-scale molecular model of Fenghuangshan anthracite coal

A large-scale (C115925H42127O892N764S919) atomistic representation of Fenghuangshan anthracite was constructed using an image-guided approach informed by high-resolution transmission electron (HRTEM) micrographs. Additional structural information was obtained from solid state 13C NMR, XRD, laser desorption ionization mass spectra (LDIMS), XPS, and gas adsorption. The structure captures the crystalline characteristics, aromaticity, organization (stacking and degree of orientation), molecule curvature, heteroatom functionality, and much of the micropore size distribution. Construction used Fringe3D and Vol3D scripts to generate slice and volumetric representations with others added heteroatoms. Curvature in the aromatic components was generated manually by adjusting 5- and 7-membered rings frequency and placement. The micropore size distribution was included by incorporating additional pores to supplement the inherent porosity created between structural components. The use of flattened pores also demonstrated a measure of control over pore shapes and captured the coalification induced pore orientation within anthracite coal. Cross-linking is currently omitted however as the frequency and placement are unknown and an automated appropriate cross-linking approach while retaining orientation and stacking is not yet available.

A novel approach for the treatment of oral ulcerative lesion using mucoadhesive proniosome gel

A mucoadhesive proniosome gel containing a potent corticosteroid drug (fluticasone propionate) was formulated for the local treatment of oral ulcerative lesions. The formula was made-up in an attempt to avoid the drug's severe systemic adverse effects, moreover, ensuring both efficacy and safety. Full factorial design was employed to prove the significant effect of surfactant type and cholesterol concentration on entrapment efficiency and vesicle size of the formulated proniosome gels. The optimum formula with an entrapment efficiency of 85.5 ± 2.4% was incorporated into mucoadhesive gels using different mucoadhesive polymers, namely, xanthan gum or sodium alginate. The effects of the polymer type and its concentration on the quantity of fluticasone propionate release as well as on the mucoadhesion force were studied. The optimum formula was found to possess a mucoadhesion force of 14425 ± 5.4 dyne/cm2 and maximum quantity of drug release of 89 ± 0.09% which showed to follow Higuchi diffusion model of release. High-resolution transmission electron micrographs revealed that the chosen formula was smooth, homogenous and in nano size range. Cytotoxicity assay test was conducted to ensure the safety of the optimum formula. Curing of oral ulcerative lesions using an animal model was assessed and emphasized by the histopathological findings.

Facile sonochemical synthesis of silver nanoparticle and graphene oxide deposition on bismuth doped manganese oxide nanotube composites for electro-catalytic sensor and oxygen reduction reaction (ORR) applications

Pristine silver nanoparticles and silver-graphene oxide nanoparticles have incorporated in Bismuth doped manganese oxide (Bi-MnOx) nanotubes by an ultra-sonication deposition method. Pristine Bismuth doped porous MnO2 has prepared by a non-ionic surfactant (Triton-X-100) assisted co-precipitation and heat treatment process. In the second stage, the biogenic method prepared very fine Ag nanoparticles with a quantum dot size of particles (below 10 nm). They have further deposited on the dried powder of Bi-MnOx by ultra-sonication fabricate the composite material for electrode application. The pure nanotube formation obtained for silver nanoparticle deposited Bi-MnOx (Ag-BiMnOx) and silver/GO nanoparticle(Ag-BiMnOx/GO) nanocomposites have clearly confirmed by high resolution transmission electron micrographs (HR-TEM). The nanotube diameter obtained in the range of 10–25 nm and length of nanotube obtained in the rage of 40–50 nm. Enhanced thermal stability has achieved for Ag-BiMnOx and Ag-BiMnOx/GO composite compared to pristine manganese oxide. Band gap values of prepared compoiste is calculated from Diffuse reflectance spectral data provide the bandgap values of Ag–Bi-MnOx/GO (1.93 eV) and Bi-MnOx (2.47 eV). As prepared graphene oxide modified Bi-MnOx composite modified electrode have further analyzed for hydrogen peroxide sensor and Oxygen reduction reactions (ORR). Silver nanoparticle-graphene oxide modified Bi-MnOx composite shows an enhanced electrochemical capacitance activity of 2.61 mF and improved electrochemical surface area of 65.25 cm2 towards clean energy technology application.

Core–shell nanomaterials based on La2Fe2O6 particles coated with polyvinylpyrrolidone for biomedical applications

This study focused on a facile and low-cost approach to synthesize La2Fe2O6/PVP core/shell nanoparticles in which the La2Fe2O6 can be incorporated into the polyvinylpyrrolidone (PVP). La2Fe2O6 (core) was prepared as the precursor by a modified citrate technique, then the PVP (shell) was seeded to form core/shell structure at various pH conditions. The variation of pH plays an important role in controlling the morphology of the investigated samples. The structural and morphological characterization of samples were carried out using X-ray analysis and High-resolution transmission electron micrographs (HRTEM), respectively. All samples exhibit orthorhombic crystal structure with Pbnm space group. Moreover, the particles in La2Fe2O6 are not stable enough and have a high tendency to aggregate and undergo rapid biodegradation in biological systems. However, La2Fe2O6/PVP Core/shell has antibacterial activity against Staphylococcus aureus (S. aureus), Escherichia coli (E. coli), and Pseudomonas aeruginosa (P. aeruginosa) by 13.0, 11.0, and 12.0 mm inhibition zone diameter (IZD), respectively. Furthermore, coating La2Fe2O6 with a PVP shell optimizes nanoparticles size distribution and agglomeration. The unique magnetic properties prompt the use of the investigated samples in diverse fields.

Structure characterization of novel alluminides in the Nd-Re-Al system by electron crystallography methods

In the Al-rich A-Re-Al alloys (where A = lanthanide or actinide), several unique structure types of ternary alluminides crystalize. In the course of the Nd-Re-Al phase diagram investigation, the new Nd2Re3Al15 phase was revealed. Despite the prolonged heat treatment, the studied alloy did not attain equilibrium state, and contained multiple intermetallic phases, resulting in severe peak overlapping in the powder X-ray diffractogram. Thus, structure analysis was performed using combination of several electron crystallography approaches. First part of this work includes an investigation of the major phase constituting the studied alloy. Using electron diffraction tomography (EDT), atomic model of a pseudo binary (Nd,Re)Al12 phase was determined and found to be in perfect agreement with the reported earlier binary structure, solved from neutron data. Following the successful structure solution of the pseudo-binary phase, the new Nd2Re3Al15 structure was analyzed using the same methodology. The unit cell geometry was determined as orthorhombic with a = 12.801 Å, b = 22.545 Å and c = 9.103 Å. The space group was evaluated as Cc2m and partial model was obtained. It was revealed that the new Nd2Re3Al15 structure is related to A7+xRe12Al61+y. Typical topological features, observed in many Al-rich intermetallic phases, were also revealed in the atomic model of the new phase. Moreover, these features were clearly observed on the high resolution transmission electron micrographs, providing indirect confirmation of the proposed partial model.