Abstract:
The present invention provides a semiconductor crystal comprising a semiconductor material having a tuned band gap energy, and methods for preparation thereof. More particularly, the invention provides a semiconductor crystal comprising a semiconductor material and amino acid molecules, peptides, or a combination thereof, incorporated within the crystal lattice, wherein the amino acid molecules, peptides, or combination thereof tune the band gap energy of the semiconductor material.
Abstract:
The present invention relates to a paste comprising amorphous calcium carbonate (ACC) doped with divalent alkaline-earth metal ions, e.g., magnesium ions, or transition metal ions: a dry three-dimensional model made of such a paste, e.g., by 3D-printing process such as robocasting 3D-printing process; and a process for the preparation of said paste.
Abstract:
The present invention provides vicinal surfaces of polycrystalline materials and a method for their preparation. The method includes the deposition of a polycrystalline material on a substrate followed by removing the material from the substrate so as to expose a vicinal surface having stepped terraces. The step of removing the material from the substrate may be preceded by annealing. The vicinal surfaces are useful for a variety of applications.