The Experts below are selected from a list of 330597 Experts worldwide ranked by ideXlab platform
Leonard M Sander - One of the best experts on this subject based on the ideXlab platform.
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effect of strain on Surface Morphology in highly strained ingaas films
Physical Review Letters, 1991Co-Authors: C W Snyder, Bradford G Orr, David A Kessler, Leonard M SanderAbstract:The early stages of growth of highly strained In{sub {ital x}}Ga{sub 1{minus}{ital x}}As on GaAs(100) have been investigated as a function of composition. The evolution of the film microstructure as determined by {ital in} {ital situ} STM and RHEED is from a two-dimensional rippled Surface in the beginning stages of growth to a three-dimensional island Morphology. A growth mode is proposed whereby strain relaxation is initially achieved through the kinetically limited evolution of Surface Morphology. In contrast to traditional critical-thickness theories, significant strain relief is accommodated by a coherent island Morphology. This study represents a new view for both the growth mode and initial strain relaxation in thin films.
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effect of strain on Surface Morphology in highly strained ingaas films
Physical Review Letters, 1991Co-Authors: C W Snyder, Bradford G Orr, David A Kessler, Leonard M SanderAbstract:The early stages of growth of highly strained ${\mathrm{In}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As on GaAs(100) have been investigated as a function of composition. The evolution of the film microstructure as determined by in situ STM and RHEED is from a two-dimensional rippled Surface in the beginning stages of growth to a three-dimensional island Morphology. A growth mode is proposed whereby strain relaxation is initially achieved through the kinetically limited evolution of Surface Morphology. In contrast to traditional critical-thickness theories, significant strain relief is accommodated by a coherent island Morphology. This study represents a new view for both the growth mode and initial strain relaxation in thin films.
John F Rabolt - One of the best experts on this subject based on the ideXlab platform.
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micro and nanostructured Surface Morphology on electrospun polymer fibers
Macromolecules, 2002Co-Authors: Silke Megelski, Jean S Stephens, Bruce D Chase, John F RaboltAbstract:Electrospun fibers were produced using a variety of solvents to investigate the influence of polymer/solvent properties on the fiber Surface Morphology. Electrospinning is a novel processing technique for the production of fibers with diameters in the range of a few nanometers to tens of micrometers. We have been able to produce polymeric fibers with a high Surface area through the introduction of a micro- and nanostructured Surface structure, which we refer to as a “porous” Morphology. These features could be introduced in several different polymeric fibers increasing their range of application significantly. The pores vary from densely packed, well-formed nanopores with diameters in the range 20−350 nm to larger flat pores of about 1 μm. The increased Surface area of polymeric fibers was correlated with high volatility solvents used in the electrospinning process. The effect of processing parameters on the fiber Surface Morphology was also investigated using optical microscopy, field emission scanning e...
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micro and nanostructured Surface Morphology on electrospun polymer fibers
Macromolecules, 2002Co-Authors: Silke Megelski, Jean S Stephens, Bruce D Chase, John F RaboltAbstract:Electrospun fibers were produced using a variety of solvents to investigate the influence of polymer/solvent properties on the fiber Surface Morphology. Electrospinning is a novel processing techni...
C W Snyder - One of the best experts on this subject based on the ideXlab platform.
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effect of strain on Surface Morphology in highly strained ingaas films
Physical Review Letters, 1991Co-Authors: C W Snyder, Bradford G Orr, David A Kessler, Leonard M SanderAbstract:The early stages of growth of highly strained In{sub {ital x}}Ga{sub 1{minus}{ital x}}As on GaAs(100) have been investigated as a function of composition. The evolution of the film microstructure as determined by {ital in} {ital situ} STM and RHEED is from a two-dimensional rippled Surface in the beginning stages of growth to a three-dimensional island Morphology. A growth mode is proposed whereby strain relaxation is initially achieved through the kinetically limited evolution of Surface Morphology. In contrast to traditional critical-thickness theories, significant strain relief is accommodated by a coherent island Morphology. This study represents a new view for both the growth mode and initial strain relaxation in thin films.
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effect of strain on Surface Morphology in highly strained ingaas films
Physical Review Letters, 1991Co-Authors: C W Snyder, Bradford G Orr, David A Kessler, Leonard M SanderAbstract:The early stages of growth of highly strained ${\mathrm{In}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As on GaAs(100) have been investigated as a function of composition. The evolution of the film microstructure as determined by in situ STM and RHEED is from a two-dimensional rippled Surface in the beginning stages of growth to a three-dimensional island Morphology. A growth mode is proposed whereby strain relaxation is initially achieved through the kinetically limited evolution of Surface Morphology. In contrast to traditional critical-thickness theories, significant strain relief is accommodated by a coherent island Morphology. This study represents a new view for both the growth mode and initial strain relaxation in thin films.
Sri Venkata Surya Siva Rama Krishna Garimella - One of the best experts on this subject based on the ideXlab platform.
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effect of superhydrophobic Surface Morphology on evaporative deposition patterns
Applied Physics Letters, 2014Co-Authors: Mercy Dicuangco, Susmita Dash, Justin A Weibel, Sri Venkata Surya Siva Rama Krishna GarimellaAbstract:Prediction and active control of the spatial distribution of particulate deposits obtained from sessile droplet evaporation are vital in printing, nanostructure assembly, biotechnology, and other applications that require localized deposits. This Letter presents Surface wettability-based localization of evaporation-driven particulate deposition and the effect of superhydrophobic Surface Morphology on the distribution of deposits. Sessile water droplets containing suspended latex particles are evaporated on non-wetting textured Surfaces with varying microstructure geometry at ambient conditions. The droplets are visualized throughout the evaporation process to track the temporal evolution of contact radius and apparent contact angle. The resulting particle deposits on the substrates are quantitatively characterized. The experimental results show that superhydrophobic Surfaces suppress contact-line deposition during droplet evaporation, thereby providing an effective means of localizing the deposition of su...
Silke Megelski - One of the best experts on this subject based on the ideXlab platform.
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micro and nanostructured Surface Morphology on electrospun polymer fibers
Macromolecules, 2002Co-Authors: Silke Megelski, Jean S Stephens, Bruce D Chase, John F RaboltAbstract:Electrospun fibers were produced using a variety of solvents to investigate the influence of polymer/solvent properties on the fiber Surface Morphology. Electrospinning is a novel processing technique for the production of fibers with diameters in the range of a few nanometers to tens of micrometers. We have been able to produce polymeric fibers with a high Surface area through the introduction of a micro- and nanostructured Surface structure, which we refer to as a “porous” Morphology. These features could be introduced in several different polymeric fibers increasing their range of application significantly. The pores vary from densely packed, well-formed nanopores with diameters in the range 20−350 nm to larger flat pores of about 1 μm. The increased Surface area of polymeric fibers was correlated with high volatility solvents used in the electrospinning process. The effect of processing parameters on the fiber Surface Morphology was also investigated using optical microscopy, field emission scanning e...
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micro and nanostructured Surface Morphology on electrospun polymer fibers
Macromolecules, 2002Co-Authors: Silke Megelski, Jean S Stephens, Bruce D Chase, John F RaboltAbstract:Electrospun fibers were produced using a variety of solvents to investigate the influence of polymer/solvent properties on the fiber Surface Morphology. Electrospinning is a novel processing techni...