To evaluate the interactions between hydrogen and the mechanical behavior of additively manufactured (AM) 17-4PH martensitic stainless steel (MSS), stress-relaxation tests were performed for both non-charged and hydrogen-charged samples. Similar tests were performed for the conventional 17-4PH MSS counterpart (CM). The results clearly indicated sig...
Published in Russian Journal of Physical Chemistry A
AbstractA theoretical study is performed of the generation of electron-hole pairs in semiconductors under the action of the recombination of hydrogen atoms on their surfaces. The theoretically possible efficiency of converting chemical energy into electrical energy using semiconductor heterostructures is determined.
Published in Russian Journal of Physical Chemistry A
AbstractStages in the development in studies of surface forces and thin liquid films are briefly summarized. The main achievements of the Laboratory of Surface Forces in the physical chemistry of surface phenomena are reviewed, including entirely new results obtained by its researchers.
The objective of this study was to optimize and to model the membrane fouling process. The modeling was based on two approaches, dynamical and phenomenological with the combination of surface phenomena. The established model was a transitional pore blockage model towards cake fouling through new characteristic parameters and a modified fouling inde...
We theoretically study the electrokinetic problem of a pressure-induced liquid flow through a narrow long channel with charged walls, going beyond the classical Helmholtz-Schmolukowski picture by considering the surprisingly strong combined effect of (i) Stern-layer conductance and (ii) dynamic chargeregulating rather than fixed surface charges. We...
PurposeThe purpose of this study was to determine the influence of mucin expression in an immortalized human corneal epithelial cell line (hTCEpi) on the surface properties of cells, such as wettability, contact angle, and surface heterogeneity.MethodshTCEpi cells were cultured to confluence in serum-free medium. The medium was then replaced by str...
Published in Journal of Friction and Wear
The results of experimental investigations of the tribological properties of iodine, which has been used as a microadditive in cutting-fluid components (CFCs) at various operations of mechanical treatment of metals and alloys. A mechanism of formation of separating lubricating films due to the initiation of chemical reactions between iodine radical...
This thesis deals with the adhesion and friction properties of densely grafted and covalently bound fluoropolymer brushes on silicon surfaces with varying thickness and fluorine content. A novel surface-functionalizing method is described using the thiol-yne click (TYC) reaction. The TYC reaction is highly useful for the attachment of functional (...
This thesis deals with spherical microparticles trapped at liquid interfaces. It focuses on two aspects of their behavior: firstly, the effect of the curvature of a liquid interface on interparticle interactions and their organization; secondly, the mobility of particles at visco-elastic interfaces. In Chapter 2of this thesis we showed that it is p...
Carbonaceous fluorine free nanoparticles synthesized in a low temperature acetylene discharge are used in a first step for the production of (super)hydrophobic coatings. In a second step, the influence of different plasma and UV induced functionalizations on the wetting characteristics of these materials is investigated. The experiments show that t...
