Quantum computer-assisted global optimization in geophysics illustrated with stack-power maximization for refraction residual statics estimation

Much of recent progress in geophysics can be attributed to the adaptation of heterogeneous high-performance computing architectures. It is projected that the next major leap in many areas of science, and hence hopefully in geophysics too, will be due to the emergence of quantum computers. Finding a right combination of hardware, algorithms, and...

Residual statics estimation with quantum annealing

Quantum computing could be a potential game-changer in industry sectors relying on the efficient solutions of large-scale global optimization problems. Exploration geoscience, is full of optimization problems and hence is a good candidate for application of quantum computing. It was recently suggested that quantum annealing, a form of adiabatic...

Protecting patches in colloidal synthesis of Au semishells

Protecting groups are commonly applied in multi-step molecular syntheses to protect one or multiple functional groups from reacting. After the reaction, they are removed from the molecule. In full analogy to this concept, we report the practical and scalable colloidal synthesis of Au semishells using polyphenylsiloxane protecting patches to...

Synthesis of polystyrene-polyphenylsiloxane Janus particles through colloidal assembly with unexpected high selectivity: Mechanistic insights and their application in the design of polystyrene particles with multiple polyphenylsiloxane patches

Janus particles are of great research interest because of their reduced symmetry, which provides them with unique physical and chemical properties. Such particles can be prepared from spherical structures through colloidal assembly. Whilst colloidal assembly has the potential to be a low cost and scalable process, it typically lacks selectivity....

Synthesis and Characterization of Hybrid Particles Obtained in a One-Pot Process through Simultaneous Sol-Gel Reaction of (3-Mercaptopropyl) trimethoxysilane and Emulsion Polymerization of Styrene

Hybrid particles consisting of an organic polymer and silica or polyorganosiloxanes are interesting building blocks for nanocomposites. The synthesis of such particles typically requires multiple reaction steps involving the formation of polymer colloids and the subsequent deposition of silicon-containing material either inside or on the surface...

Synthesis of sub-micron sized hollow, And nanoporous phenylsiloxane spheres through use of phenyltrimethoxysilane as surfmer: Insights into the surfactant and factors influencing the particle architecture

Recently, our group reported synthesis routes for sub-micron sized hollow, and nanoporous phenylsiloxane spheres, in which phenyltrimethoxysilane is applied as surfmer. Here, we present insights into the surfactant formed through hydrolytic conversion of phenyltrimethoxysilane, and factors influencing the particle architecture. cop. 2016...

The Influence of Particle Size Distribution and Shell Imperfections on the Plasmon Resonance of Au and Ag Nanoshells

Au and Ag nanoshells are of interest for a wide range of applications. The plasmon resonance of such nanoshells is the property of interest and can be tuned in a broad spectral regime, ranging from the ultraviolet to the mid-infrared. To date, a large number of manuscripts have been publishedontheopticsofsuchnanoshells.Fewofthese,however,...

Facile and Versatile Platform Approach for the Synthesis of Submicrometer-Sized Hybrid Particles with Programmable Size, Composition, and Architecture Comprising Organosiloxanes and/or Organosilsesquioxanes

We present a facile and versatile platform approach for the synthesis of submicrometer-sized hybrid particles based on an oil-in-water emulsion. These particles comprise organosiloxanes and/or organosilsesquioxanes formed via hydrolysis and polycondensation of alkyl- or aryltrimethoxysilane, and polystyrene or poly(methyl methacrylate) formed...

Glucose-functionalized polystyrene particles designed for selective deposition of silver on the surface

We present the synthesis of glucose-functionalized polystyrene particles through emulsion polymerisation using glucose acrylate as reactive surfactant. Additionally, we present the selective deposition of silver on the surface of these particles yielding well-defined polystyrene-silver composites.

A facile route for the synthesis of sub-micron sized hollow and multiporous organosilica spheres

We present a facile route for the synthesis of sub-micron sized hollow and multiporous organosilica spheres, which is based on an oil-in-water emulsion and merely uses one organosilica precursor-phenyl trimethoxysilane-that serves as monomer, precursor for a surface active species and oil phase. This journal is © the Partner Organisations 2014.

Investigation on ageing of KS32

We studied the ageing of KS32 at various relative humidity and temperature environments, as well as the influence of the nature of the purging gas (nitrogen and air) on their decomposition. The samples were run by a linear heating program and the kinetics of their decomposition was evaluated using the iso - conversional Friedman’s method.