准晶声子熔化This paper is devoted to the study of phonon and melting property of two-demensional Per.rose latrice with five-fold rotational symmetric axis. We intrtoduce a similarity transformation which transforms the dynamical matrix into a block-diagonal matrix, which helps to determine ...
Two-dimensional hybrid organic–inorganic perovskites (2D HOIPs) have emerged as one of the most promising functional materials, with the benefits of enhanced environmental stability22, superior optical properties23,24,25, diverse electronic properties26,27,28, and accessible and cost-effective fabricati...
In nature, protein subunits on the capsids of many icosahedral viruses form rotational patterns, and mathematicians also incorporate asymmetric patterns into faces of polyhedra. Chemists have constructed molecular polyhedra with vacant or highly symmetric faces, but very little is known about constructing ...
Rotational Rotational cleavage involves a normal first division along the meridional axis, giving rise to two daughter cells. Za rotacijsko brazdanje karakteristična je normalna prva dioba stanice koja se događa na meridijalnoj osi i kojom nastaju dvije stanice kćeri. WikiMatrix ...
This chapter discusses a sensory-motor coordination control scheme that realises stable grasping (precision prehension) of rigid objects with parallel or non-parallel flat surfaces movable in a two-dimensional vertical plane by a pair of multi-joint robot fingers with hemispherical ends. The proposed...
2. Structure, properties and defects of two-dimensional (2D) materials 2.1. Structure and properties of 2D materials Many layered materials have strong in-plane chemical bonds and weak interlayer couplings. These layered structures can be exfoliated into 2D materials with single or only few layers ...
iQαβibecomesatraceless3×3matrixwitheigen-valuesQ=[−(Q1+Q2),Q1,Q2].Suchphasesareoftwotypes:uniaxialnematicwhereQ1=Q2andbiaxialne-maticforwhichQ1 =Q21.Inboththesephases,thesys-tembreaksrotationalsymmetrieswhilepreservingtransla-tionalinvariance.Uniaxialnematicphasesoccursmorefre-quentlywhereasthefirst...
Yet a further object of the invention is to provide a method for computing eigenvalues of an extradimensional product matrix associated with intersecting quadric surfaces of objects for determining when the object share common volume. Still another object of the invention is to provide a method for...
which is valid for spin-rotational invariant low-dimensional systems with exchange interactions. However, both magnetic anisotropy and dipolar interactions are well capable of lifting the Mermin–Wagner restriction. Certainly, there is no lack of attempts to endow two-dimensional (2D) materials with ma...
Here we show, based on the Floquet-Bloch theory, that the on-resonant linearly and circularly polarized infrared light brings in the exotic Floquet quantum spin Hall state and half-metal in two-dimensional Metal-organic frameworks (2D MOFs) because of the unbroken and broken time-reversal ...