Morphological evolution of strained isotropic thin solid film on rigid substrate /

Download
2014
Haddadian, Sanam
we demonstrate the effects of strain relaxation on morphological evolution of QDs and occurrence of wetting layer. Our study based on continuum level dynamical simulations will be presented for the spontaneous evolution of an isotropic isolated thin solid droplet on a rigid substrate under various stress fields.

Suggestions

Characterization of flow regime in concentric annuli and pipes for yield-pseudoplastic fluids
Gucuyener, IH; Mehmetoglu, T (1996-09-01)
This paper presents an analysis of the laminar-turbulent transition for flow of yield-pseudoplastic fluids in pipes and concentric annuli. The yield-pseudoplastic rheology is represented by the three-parameter Robertson-Stiff model, A modified Reynolds number is developed based on an equivalent diameter including characteristic parameters of the flow situations under consideration. Using the literature data, Hanks' theory of laminar flow stability is reanalyzed in comparison with other correlations. On acco...
Structural and optical properties of thermally evaporated Ga-In-Se thin films
IŞIK, MEHMET; Güllü, Hasan Hüseyin (2014-05-30)
In this paper, structural and optical properties of Ga-In-Se (GIS) thin films deposited by thermal evaporation technique have been investigated. The effect of annealing was also studied for samples annealed at temperatures between 300 degrees C and 500 degrees C. X-ray diffraction, energy dispersive X-ray analysis and scanning electron microscopy have been used for structural characterization. It was reported that increase of annealing temperature results with better crystallization and chemical composition...
Optical and structural characterization of mixed halide perovskite thin films by thermal co-evaporation
Yılmaz, Onur; Turan, Raşit; Yerci, Selçuk; Department of Physics (2016)
Cost-effective, easy-to-produce, optically and electrically configurable properties of perovskite allow researchers to perform a profound investigation to better understand its physical and chemical nature. Additionally, band gap tunability by introducing bromide (Br) to replace iodine (I) also makes perovskite a suitable material for tandem solar cells. However, to fully benefit from perovskite cells, hysteresis in current-voltage curve, poor stability and relatively low fill factor in large area devices n...
Investigation of parameters affecting morphology of microfiltration and ultrafiltration membranes fabricated via phase separation microfabrication
Bolat, Cankut Kaan; Çulfaz Emecen, Pınar Zeynep; Bat, Erhan; Department of Chemical Engineering (2017)
This study examines the factors affecting the morphology of polyethersulfone membranes produced via phase separation microfabrication technique. Flat and corrugated membranes were prepared using a combination of vapor induced and liquid induced phase separation, and characterized using scanning electron microscopy, pure water permeance tests and Baker’s yeast (Saccharomyces Cerevisiae) fouling tests. An inverse asymmetric morphology was tried to be achieved for corrugated membranes, in order to increase the...
Living radical polymerization of hydroxyethyl methacrylate and its block copolymerization with poly(dimethyl siloxane) macroazoinitiator
Vargün, Elif; Usanmaz, Ali; Department of Polymer Science and Technology (2009)
Hydrophilic poly(2-hydroxyethyl methacrylate), PHEMA, and hydrophobic poly(dimethyl siloxane), PDMS, segments containing copolymers have been widely used as a biomaterial. These amphiphilic copolymers also used as an emulsifying agent in polymer solutions and compatibilizer in polymer blends. In this case, solution polymerizations of HEMA by radiation, ATRP and RAFT methods were studied. The thermal degradation mechanism of PHEMA, which was prepared in aqueous solution by gamma radiation technique, was stud...
Citation Formats
S. Haddadian, “Morphological evolution of strained isotropic thin solid film on rigid substrate /,” M.S. - Master of Science, Middle East Technical University, 2014.