Abstract Two-dimensional (2D) van der Waals (vdW) materials provide the versatile playground to stack two or more vdW layers for creation of superior with desired properties. Here we theoretically adopt a twisted stack-engineering LaBr 2 monolayers break space inversion symmetry ferroelectricity and ultimately multiferroism. The enhancement reversal electric polarization are accompanied transit...

Fast and accurate 3D object reconstruction and partial 3D component retrieval from 2D image slices represent a difficult and challenging problem. To group related objects on different layers in an image stack, image segmentation and sequential matching of adjacent 2D objects have to be preformed. Object matching involves heavy computing and is time consuming. In this paper, we propose a new app...

True amplitude migration is a di raction stack with a properly chosen weight function in its migration kernel. Many papers claim that with a carefully chosen weight function, di raction stack migration will yield an image with its amplitudes proportional to the angular-dependent re ection coe cients at the re ector positions. Bleistein used the stationary phase method to give a proof of this cl...

Model checking of open pushdown systems (OPD) w.r.t. standard branching temporal logics (pushdown module checking or PMC) has been recently investigated in the literature, both in the context of environments with perfect and imperfect information about the system (in the last case, the environment has only a partial view of the system’s control states and stack content). For standard CTL, PMC w...

GG ar91] D. GG artner. {Red + : ein interaktives codeausf uhrendes Reduktionssystem zur vollstt andigen Realisierung eines angewandten {Kalk uls. PhD thesis, Institut f ur In-14 Top{level abstractions returned after a pass through the processing phase are merely special cases of partial applications: they are not applied to any arguments at all. {extension applies them to the complete set of ab...

Man, Mengren. Ph.D., Purdue University, August 2016. Nanophotonics for Dark Materials, Filters, and Optical Magnetism. Major Professor: Kevin J. Webb. Research on nanophotonic structures for three application areas is described, a near perfect optical absorber based on a graphene/dielectric stack, an ultraviolet bandpass filter formed with an aluminum/dielectric stack, and structures exhibiting...

The complete mol-ecule of the title compound, C(28)H(28)B(2)Br(4)O(4), is generated by the application of a centre of inversion. In the mol-ecule, the BO(2) plane is perpendicular to that through the pyrene ring [dihedral angle = 86.27 (13)°]. In the crystal, mol-ecules stack into columns along the b axis, the closest contact between these being of the type C-Br⋯π.

In the title compound, C(16)H(12)FNO(3), the dihedral angle between the benzene ring and the plane of the indole ring system is 71.60 (6)°. In the crystal, mol-ecules stack along the b axis through π-π inter-actions between the adjacent indole-2,3-dione units with a centroid-centroid distance of 3.649 (3) Å. Inter-molecular C-H⋯O=C and C-H⋯π inter-actions further stabilize the structure, formin...