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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Computational Materials Discovery and Optimization: From 2D to Bulk Materials
Presentation Title H-2: First Principle Study of Nonlinear Elastic Mechanical Responses of Two-dimensional Stanene
Author(s) Zhe Shi, Chandra Veer Singh
On-Site Speaker (Planned) Zhe Shi
Abstract Scope Graphene, while exceptionally strong and conductive, has limited use for nanoelectronic devices due to the lack of a desirable intrinsic band gap. This has led researchers to look extensively into other elemental monolayered materials analogous to graphene but with intrinsic gaps to serve as semiconductors. The recent successful synthesis of graphene’s Group IV cousin, stanene, has made researchers wonder the possibility of it replacing graphene in various applications. However, in order for stanene to become this candidate and demonstrate many of its superior properties, its mechanical integrity during operations has to be assured at first. Here, we adopted Density Functional Theory simulations to investigate the nonlinear elastic mechanical response of stanene. It is found that stanene can sustain >15% strain without losing elasticity and >30% deformation without fracture for both uniaxial and biaxial tensile loading, a performance better than graphene. This mechanical behavior is further explained by studying the change of electron densities in response to external stresses through simulated STM imaging and charge density analysis.
Proceedings Inclusion? Planned: A print-only volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Differential-Exponential Hardening Model for Crystal Plasticity Modeling of Single Crystals
A Fast Algorithm for the Discovery of Optimal Nickel-based Superalloys
A General-Purpose Toolkit for Predicting the Properties of Materials using Machine Learning
A Machine Learning Approach to Bulk Property Prediction for the Laser Assisted Cold Spray Process
Applying Graph Kernels to the Transgranular Network for Microstructure Data Mining
Atomistic Modeling of Structure-Property Relationships in Grain Boundaries
Combined DFT, MD and Hybrid MD/FEM Simulations to Investigate Realistic Mechanical Deformations during Nanoindentation
Computational Discovery of New 2D and 3D Topological Materials
Computational Discovery of Novel Magnetic 2D Materials
Computational Discovery of Novel Single-Layer Group-IV Oxides with an Evolutionary Algorithm
Computational Exploration of Rare-earth Zirconate Pyrochlores for Thermal Barrier Coatings: Accurate Prediction of Thermal Conductivities and Thermal Expansion Coefficients from First-principles Calculations
Developing Physically-based Three Dimensional Microstructures: Bridging Phase Field and Crystal Plasticity Models
Effect of Charge on Point Defect Size Misfits from Ab Initio: Aliovalently Doped SrTiO3
Electronic Structures of Ferromagnetic Fe1-xTMxPt Alloys (TM = Mn, Fe, Co, Ni, Cu)
Exploring the Structure-composition Design Space in Multi-component Alloy Systems Using Nature Inspired Optimization Algorithms
Fatigue Crack Growth Modeling and Microstructural Mechanisms in Engine Materials under Hot Compressive Dwell Conditions
First Principles Investigation On TiAl3 Alloys Substitutively Doped With Si
H-1: A Theoretical Study on the Origin of Mg-based LPSO Structures
H-2: First Principle Study of Nonlinear Elastic Mechanical Responses of Two-dimensional Stanene
High-Throughput Screening of Substrates for Synthesis and Functionalization of Two-Dimensional Materials
Hydrogen-induced Core Structures Change of Screw and Edge Dislocations in Tungsten
Lithiation Kinetics of Crystalline Silicon Nanowires Regulated by Native Oxide Layer: A Molecular Dynamics Simulation Using ReaxFF.
Machine Learning in Chemical Space
Microstructural Evolution of High Temperature Ni-Cr ODS Alloy: Genetic Algorithm Approach
Modeling the Hydroforming of a Large Grain Niobium Tube
Monte Carlo Simulation of Two-phase Film Growth on a Patterned Substrate
Multi Scale Modeling of Deformation Behavior in Near Beta Ti-5553 Alloy
Prediction of Entropy Stabilized Incommensurate Phases in the System MoS_2-MoTe_2
Proving the Exact Ground State of a Generalized Ising Model by Convex Optimization and MAX-SAT
ReaxFF Force Field Development and Simulations of Two Classes of 2-Dimensional Structures: MoS2 and MXenes
Stability of Combined Depositions of Graphene and Gallium Nitride on Silicon Carbide: Interfacial Energies and Phonons
Three-Dimensional Simulation of Intercalation-Induced Stress in LiCoO2 Cathode Reconstructed by Focused Ion Beam Tomography
Turbostratically Disordered Compounds as a Template for Computational Materials Discovery

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