Role of surface energy on the morphology and optical properties of GaP micro & nano structures grown on polar and non-polar substrates

2017 ◽  
Vol 419 ◽  
pp. 957-967 ◽  
Author(s):  
R. Roychowdhury ◽  
Shailendra Kumar ◽  
A. Wadikar ◽  
C. Mukherjee ◽  
K. Rajiv ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Energy ◽  
Nano Structures

The role of polarity and surface energy in the growth mechanism of ZnO from nanorods to nanotubes

CrystEngComm ◽  
2016 ◽  
Vol 18 (5) ◽  
pp. 779-786 ◽  
Author(s):  
Kwong-Lung Ching ◽  
Guijun Li ◽  
Yeuk-Lung Ho ◽  
Hoi-Sing Kwok
Keyword(s):  
Zinc Oxide ◽  
Optical Properties ◽  
Surface Energy ◽  
Growth Mechanism ◽  
Electronic Devices ◽  
Zinc Oxide Nanostructures ◽  
Electrical And Optical Properties ◽  
Oxide Nanostructures

The polarity of zinc oxide nanostructures is crucial to modern electronic devices in terms of electrical and optical properties.

scholarly journals Role of the Anilinium Ion on the Selective Polymerization of Anilinium 2-Acrylamide-2-methyl-1-propanesulfonate

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2349
Author(s):  
Alain Salvador Conejo-Dávila ◽  
Marco Armando Moya-Quevedo ◽  
David Chávez-Flores ◽  
Alejandro Vega-Rios ◽  
Erasto Armando Zaragoza-Contreras
Keyword(s):  
Cyclic Voltammetry ◽  
Optical Properties ◽  
Thermal Properties ◽  
Free Radical ◽  
1H Nmr ◽  
Molecular Interactions ◽  
13C Nmr ◽  
Oxidative Polymerization ◽  
Cyclic Voltammetry Analysis

The development of anilinium 2-acrylamide-2-methyl-1-propanesulfonate (Ani-AMPS) monomer, confirmed by 1H NMR, 13C NMR, and FTIR, is systematically studied. Ani-AMPS contains two polymerizable functional groups, so it was submitted to selective polymerization either by free-radical or oxidative polymerization. Therefore, poly(anilinium 2-acrylamide-2-methyl-1-propanesulfonic) [Poly(Ani-AMPS)] and polyaniline doped with 2-acrylamide-2-methyl-1-propanesulfonic acid [PAni-AMPS] can be obtained. First, the acrylamide polymer, poly(Ani-AMPS), favored the π-stacking of the anilinium group produced by the inter- and intra-molecular interactions and was studied utilizing 1H NMR, 13C NMR, FTIR, and UV-Vis-NIR. Furthermore, poly(Ani-AMPS) fluorescence shows quenching in the presence of Fe2+ and Fe3+ in the emission spectrum at 347 nm. In contrast, the typical behavior of polyaniline is observed in the cyclic voltammetry analysis for PAni-AMPS. The optical properties also show a significant change at pH 4.4. The PAni-AMPS structure was corroborated through FTIR, while the thermal properties and morphology were analyzed utilizing TGA, DSC (except PAni-AMPS), and FESEM.

scholarly journals Dynamics of Monolayer Growth in Vapor–Liquid–Solid GaAs Nanowires Based on Surface Energy Minimization

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1681
Author(s):  
Hadi Hijazi ◽  
Vladimir G. Dubrovskii
Keyword(s):  
Surface Energy ◽  
Continuous Process ◽  
Vapor Liquid Solid ◽  
Gaas Nanowires ◽  
Monolayer Growth ◽  
Surface Energetics ◽  
Monolayer Expansion ◽  
Vapor Liquid Solid Growth ◽  
Vapor Liquid

The vapor–liquid–solid growth of III-V nanowires proceeds via the mononuclear regime, where only one island nucleates in each nanowire monolayer. The expansion of the monolayer is governed by the surface energetics depending on the monolayer size. Here, we study theoretically the role of surface energy in determining the monolayer morphology at a given coverage. The optimal monolayer configuration is obtained by minimizing the surface energy at different coverages for a set of energetic constants relevant for GaAs nanowires. In contrast to what has been assumed so far in the growth modeling of III-V nanowires, we find that the monolayer expansion may not be a continuous process. Rather, some portions of the already formed monolayer may dissolve on one of its sides, with simultaneous growth proceeding on the other side. These results are important for fundamental understanding of vapor–liquid–solid growth at the atomic level and have potential impacts on the statistics within the nanowire ensembles, crystal phase, and doping properties of III-V nanowires.

scholarly journals Effect of dopant concentration and the role of ZnS shell on optical properties of Sm3+ doped CdS quantum dots

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 7961-7971
Author(s):  
N. D. Vinh ◽  
P. M. Tan ◽  
P. V. Do ◽  
S. Bharti ◽  
V. X. Hoa ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Dopant Concentration ◽  
Core Shell ◽  
Cds Quantum Dots ◽  
Cds Qds

The role of samarium (Sm) dopant on the structural, morphological, and optical properties of CdS QDs and CdS/ZnS core/shell QDs was methodically reported.

Role of non-magnetic dopants on the room temperature ferromagnetism and optical properties of BaSnO3 perovskite

2020 ◽  
Vol 281 ◽  
pp. 121028 ◽  
Author(s):  
Saad Mabrouk Yakout ◽  
Hanan A. Mousa ◽  
Hala T. Handal ◽  
Walid Sharmoukh
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism

Optical properties of GaSb(001)-c(2 × 6): The role of surface antisite defects

2010 ◽  
Vol 247 (8) ◽  
pp. 1960-1964 ◽  
Author(s):  
Conor Hogan ◽  
Rita Magri ◽  
Rodolfo Del Sole
Keyword(s):  
Optical Properties ◽  
Antisite Defects
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