Brittle Fracture of 2D MoSe2.
نویسندگان
چکیده
An in situ quantitative tensile testing platform is developed to enable the uniform in-plane loading of a freestanding membrane of 2D materials inside a scanning electron microscope. The in situ tensile testing reveals the brittle fracture of large-area MoSe2 crystals and measures their fracture strength for the first time.
منابع مشابه
3D Cohesive Investigation on Branching for Brittle Materials
The experiments on dynamic crack propagation in PMMA (polymethyl methacrylate) and in soda lime glass conducted by Fineberg and Sharon (see [1-2] and quoted references) during the last decade pointed out some characteristic features of the microbranching instability in brittle materials. They observed the existence of a critical velocity for the onset of the microbranching; described the relati...
متن کاملFinite Element Model for Brittle Fracture and Fragmentation
A new computational model for brittle fracture and fragmentation has been developed based on finite element analysis of non-linear elasticity equations. The proposed model propagates the cracks by splitting the mesh nodes alongside the most over-strained edges based on the principal direction of strain tensor. To prevent elements from overlapping and folding under large deformations, robust geo...
متن کاملLarge Area Synthesis of 1D-MoSe2 Using Molecular Beam Epitaxy.
Large area synthesis of 1D-MoSe2 nanoribbons on both insulating and conducting substrates via molecular beam epitaxy is presented. Dimensional controlled growth of 2D, 1D-MoSe2 , and 1D-2D-MoSe2 hybrid heterostructure is achieved by tuning the growth temperature or Mo:Se precursor ratio.
متن کاملTwo-dimensional GaSe/MoSe2 misfit bilayer heterojunctions by van der Waals epitaxy.
Two-dimensional (2D) heterostructures hold the promise for future atomically thin electronics and optoelectronics because of their diverse functionalities. Although heterostructures consisting of different 2D materials with well-matched lattices and novel physical properties have been successfully fabricated via van der Waals (vdW) epitaxy, constructing heterostructures from layered semiconduct...
متن کاملDynamic and Quasi-Static Tensile Properties of Structural S400 Steel
The study of mechanical behavior of the structural steel S400 under quasi- static and dynamic loading has been the subject of this investigation. In oder to obtain different stress - triaxiality conditions the specimens were notched with 1, 1.5, 2 and 3.5 mm notch radius. The results of fractography show as the velocity of tension increases, ductility reduces and a ductile-brittle transition oc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Advanced materials
دوره 29 2 شماره
صفحات -
تاریخ انتشار 2017