Both WS2 and SnS are 2-dimensional, van der Waals semiconductors, but with different crystal structures. Heteroepitaxy of these materials was investigated by growing 3 alternating layers each using atomic layer deposition on 5 cm × substrates. Initially, films were grown characterized separately. Back-gated transistors displayed n-type behavior an effective mobility 12 cm(2) V(-1) s(-1), whereas showed a p-type conductivity hole 818 s(-1). All measurements performed at room temperature. As...

Abstract Single crystals of REE, Al borates, new and known representatives huntite family are obtained by annealing REEBO 3 on 2 O surface at 1100°C. Phase identification for REE=Pr, Eu, Tb, Tm, Ho, Yb has been carried out using unit cell parameter determination single crystals. Crystal structures C 2/ c (PrAl (BO ) 4 (EuAl ‐ two polytypic modifications, previously determined other REE's have studied. Formation one or another polytype in similar thermodynamic conditions is probably dependent...

We have employed first-principles density-functional calculations to study the electronic characteristics of covalently functionalized graphene by metal-bis-arene chemistry. It is shown that functionalization with M-bis-arene (M = Ti, V, Cr, Mn, Fe) molecules leads an opening in bandgap (up 0.81 eV for Cr derivative), and as a result, transforms it from semimetal semiconductor. The induced attachment metal atom topped benzene ring attributed modification π-conjugation depends on...

As the concentration of greenhouse gases (GHGs) in atmosphere increases, concerns about carbon emissions are growing. Several net-zero initiatives taking place around globe to achieve a balance between GHGs put into and those taken out. While most efforts present sectorized approach, this paper describes importance integrating information across different sectors for effective modeling holistic reduction opportunity analysis. Using Idaho National Laboratory (INL) campus as test case, work...

We have employed first-principle calculations to study transformation of graphene's electronic structure under functionalization by covalent bonds with di erent atomic and molecular groups - epoxies, amines, PFPA. It is shown that this leads an opening in the band gap on order tens meV, but also reduction electrical conductivity. discuss influence charge exchange between functionalizing molecule conjugated electrons electron transport properties.

Low-voltage, aberration-corrected, High-Resolution Transmission Electron Microscopy (HRTEM) has proven to be an excellent tool for structure analysis of graphene films, which are typically one or a few atoms thick. Experimental observations films by HRTEM exhibit several challenges due low contrast and sensitivity intense electron beams. Hence the interpretation requires computer simulations reliable identification. based on multislice algorithms presented compared experimental results....

Abstract Physical properties of graphene depend on the number atomic layers in film, presence structural defects and impurities. Low‐voltage, aberration‐corrected, high‐resolution transmission electron microscopy (HRTEM) has proven to be an excellent tool for structure analysis films. However, experimental observations films by HRTEM exhibit several challenges due low contrast sensitivity intense beams. While a majority scattering effects are purely kinematic, interpretation still requires...

MoP is a topological semimetal which has drawn attention due to its unique electrical and optical properties resulting from massless electrons. In order utilize these for practical applications, it necessary develop technique produce high-quality, large-scale thin films of this 2D material. We report below our initial results growth using atomic layer deposition (ALD), where the film grows layer-by-layer. These were grown on 5 cm × silicon oxide coated Si wafers. Resistivity versus...

Abstract Single crystals of new Cu,Lu(Ho)–alumoborate and known Cu,Al–borate were synthesized through reaction between CuB 2 O 4 Ln BO 3 on the Al surface by annealing at 1100 °C. Structure commensurate modification AlCu B 9 23 , ( = Lu,Ho), sp. gr. $P{\bar 4}2_{1}m$ was solved room temperature. It found that a low–temperature (110 K) possesses incommensurate modulations with modulation vector q =(0, 0, 0.132). The nonaborate block – [B ] 19– 9[6T+3Δ] forms an isolated unique dense closed...

We have calculated thermal conductance of graphene nanoribbons (GNRs) and their dependence on the type ribbon edge termination (zigzag or armchair) width ribbon, which ranges from 50 Å to μm. Our model incorporates effect roughness includes correlation functions for both types termination. The ribbons relative contribution different scattering mechanisms are also analyzed by means Green’s function approach scattering. High temperature was found be 0.15 nW/K 0.18 (corresponding conductivity,...

Journal Article Evaluation of Phase Segregation in Ternary Pt-Rh-SnO2 Catalysts Prepared from the Vapor Get access Justin M Roller, Roller FEI Company, 5350 NE Dawson Creek Drive Hillsboro Oregon 97124 USA Search for other works by this author on: Oxford Academic Google Scholar Haoran Yu, Yu Department Chemical & Biomolecular Engineering, 191 Auditorium Road, University Connecticut Storrs 06269, CT, Liang Zhang, Zhang Paul Plachinda, Plachinda Miomir B Vukmirovic, Vukmirovic Chemistry...

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – 5, 2010.

Large language models demonstrated state-of-the-art results on various reasoning tasks when applying the chain-of-thought (CoT) prompting technique. CoT guides model into breaking a few intermediate steps and provides step-by-step demonstrations. However, solving complex remains challenge. In this paper, we propose novel strategy inspired by Dialectical Behavioral Therapy (DBT). DBT, form of cognitive-behavioral therapy, aims to help individuals cope with stress developing system reasoning....

A second-order phase transition with both displacive and disorder mechanisms was discovered in Lu4AlCu2B9O23 using single-crystal X-ray diffraction techniques by cooling down the sample to 110 K. Low-temperature structure modulations are mainly associated Cu atoms surrounded O atoms. The fivefold asymmetric environment leads a special copper position splitting into pair of general ones so that four coordinate each them. Each site is 50% occupied at room temperature, but lower temperature...

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – 5, 2010.

The defining features of a scanning probe microscope (SPM) are very fine "probe" that is scanned in two dimensions (2D), steps, close to the surface sample, and "probe sample interactions signal" recorded at each increment. This signal may then be digitized displayed as function magnified steps. A 2D-image probe-sample may, thus, obtained. Just like any other image, these images can subjected image processing routines order quantify information contained. For SPM 2D periodic objects,...

We have employed first-principles density functional calculations using Quantum ESPRESSO software to study the carrier conductance in few-layer thick 2D WSe2 semiconducting films. The results of this simulation are then compared experimental where films were grown via atomic layer deposition. contact resistances determined transfer line method. A comparison and simulated values shows a good agreement.