The cover photo describes the ring topological structure of carbon nucleus (using vortex-fractal-ring theory), which consists from two globules with 3 protons globule substructures. As discussed by, this vortex-fractal-ring theory is a new and original view of elementary particles and the structure of atomic nuclei, atoms, and molecules. Its basics are simple for understanding through the comprehensive topological structure that does not need description by complicated mathematical formulas. This theory together with grammatical evolution can design new models of nanostructures and allows us to understand the fundamental physical and chemical reasons for the stability and reactivity of atoms and molecules.
Modulation of optical properties with multilayer thickness in antimonene and indiene
Matko Mužević1, Maja Varga Pajtler1, Sanjeev Kumar Gupta2, Igor Lukačević1*
1Department of Physics, Josip Juraj Strossmayer University of Osijek, Trg Ljudevita Gaja 6, Osijek 31000, Croatia
2Department of Physics and Electronics, St. Xavier’s College, Ahmedabad 380009, India
Adv. Mater. Lett., 2019, 10 (4), pp 270-274
Publication Date (Web): Jan 10, 2019
Copyright © 2018 VBRI Press
Optical properties of 2D materials can be effectively modulated by employing multilayer structures with different number of layers. Using the theoretical approach based on density functional theory we simulated relevant optical spectra of antimony and indium mono- and multilayers. We showed that the electronic band structures of antimonene and indiene possess numerous tracking bands enhancing the transition probability. Therefore, high absorption coefficients are found. Modelled multilayer nanostructures of antimonene and indiene experience a red-shift of absorption bands. Antimonene exhibits an optical directional anisotropy regarding the absorbance coefficient and reflectance spectrum for different nanolayer thicknesses. Indiene possesses very high reflectance and refractive index in the visible and IR spectrum which can be effectively modulated by the number of layers. Our work shows that antimonene and indiene multilayers harbour untapped potential for the optical applications at the nanoscale.
2D materials, antimony, indium, optical properties, density functional theory.