Materials from binary tetrahedral main group element units

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Main group element nets to a T.

T-shaped nets (three-coordinated nets with an angular metric, bond angles near 90 degrees, 90 degrees, 180 degrees) are found in a number of extended structures. We explore in this paper the geometrical and electronic consequences of a stricter T-shape metric, where the distances between the vertices of the net are approximately equal and in the range of a chemical bond. Every atom in such a ne...

متن کامل

From Racemic Units to Polar Materials

A new route is described that enables the design of polar materials using racemic basic building units (BBUs). Λand Δ-[Cu(H2O)(bpy)2] complexes in noncentrosymmetric [Cu(H2O)(bpy)2]2[HfF6]2·3H2O and centrosymmetric [Cu(H2O)(bpy)2][BF4]2 reveal that racemic BBUs in the solid state can lead directly to noncentrosymmetry. The structure is polar if only mirror or glide planes relate the leftand rig...

متن کامل

Improved Linear Tetrahedral Element for Surgical Simulation

Automatic hexahedral mesh generation for complex geometries is still a challenging problem, and therefore tetrahedral or mixed meshes are preferred. Unfortunately the standard formulation of the linear tetrahedral element exhibits volumetric locking in case of almost incompressible materials. In this paper we propose a new linear tetrahedral element based on the average nodal Jacobian. This ele...

متن کامل

Adaptive tetrahedral subdivision for finite element analysis

Realistic behavior of deformable objects is essential for many applications in computer graphics, engineering, or medicine. Typical techniques are either based on mass-springdamper models, boundary element methods, finite difference methods, or finite element methods. These methods either lack accuracy or are computationally very expensive. If accuracy is required FEM computations use adaptive ...

متن کامل

Global Units modulo Circular Units : descent without Iwasawa’s Main Conjecture

Iwasawa’s classical asymptotical formula relates the orders of the p-parts Xn of the ideal class groups along a Zp-extension F∞/F of a number field F , to Iwasawa structural invariants λ and μ attached to the inverse limit X∞ = lim ← Xn. It relies on ”good” descent properties satisfied by Xn. If F is abelian and F∞ is cyclotomic it is known that the p-parts of the orders of the global units mod...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Comptes Rendus Chimie

سال: 2018

ISSN: 1631-0748

DOI: 10.1016/j.crci.2018.04.010