Numerical simulation of thermal properties in two-dimensional Yukawa systems

New results obtained for thermal conduction in 2D Yukawa systems. The results of numerical study of heat transfer processes for quasi equilibrium systems with parameters close to conditions in laboratory experiments with dusty plasma are presented. The Green-Kubo relations are used to calculate thermal conductivity and diffusivity coefficients. For the first time the influence of dissipation (friction) on the heat transfer in non-ideal systems is studied. New approximation is suggested for thermal diffusivity. The comparison with the existing experimental and numerical results is shown.Comment: 18 pages, 9 figure

Enhancements of nucleate boiling under microgravity conditions

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76852/1/AIAA-2000-853-986.pd

Гетерометаллические биядерные карбоксилаты металлов на основе палладия – новый путь к смешанно-металлическим наноматериалам

New synthetic approach to the preparation of palladium(II)-based heterobimetallic complexes was proposed. The complexes were prepared in high yields (85-95%) in single-crystalline form and structurally characterized by physicochemical methods, including X-ray structural analysis. All the complexes are built based on the structural motif [Pd(-OOCR)4M] (R = Me, tBu; M = Cu(II), Zn(II), Ni(II), Co(II), Mn(II), Ce(IV), Nd(III), Sm(III), Eu(III), Tm(III), Yb(III)). Reduction of the heterobimetallic complexes can produce new mixed-metal nanomaterialsРазработаны оригинальные синтетические подходы к получению биядерных гетерометаллических комплексов палладия, содержащих структурный мотив [Pd(-OOCR)4M] (R = Me, t-Bu; M = Cu(II), Zn(II), Ni(II), Co(II), Mn(II), Ce(IV), Nd(III), Sm(III), Eu(III), Tm(III), Yb(III)). Комплексы выделены с количественным выходом в монокристаллическом виде и охарактеризованы физико-химическими методами, в том числе данными рентгеноструктурного анализа. Смешанно-металлические наноматериалы могут быть получены восстановлением синтезированных комплексов

Master singular behavior for the Sugden factor of the one-component fluids near their gas-liquid critical point

We present the master (i.e. unique) behavior of the squared capillary length - so called the Sudgen factor-, as a function of the temperature-like field along the critical isochore, asymptotically close to the gas-liquid critical point of twenty (one component) fluids. This master behavior is obtained using the scale dilatation of the relevant physical fields of the one-component fluids. The scale dilatation introduces the fluid-dependent scale factors in a manner analog with the linear relations between physical fields and scaling fields needed by the renormalization theory applied to the Ising-like universality class. The master behavior for the Sudgen factor satisfies hyperscaling and can be asymptotically fitted by the leading terms of the theoretical crossover functions for the correlation length and the susceptibility in the homogeneous domain recently obtained from massive renormalization in field theory. In the absence of corresponding estimation of the theoretical crossover functions for the interfacial tension, we define the range of the temperature-like field where the master leading power law can be practically used to predict the singular behavior of the Sudgen factor in conformity with the theoretical description provided by the massive renormalization scheme within the extended asymptotic domain of the one-component fluid "subclass"

Probing polydopamine adhesion to protein and polymer films: microscopic and spectroscopic evaluation

Polydopamine has been found to be a biocompatible polymer capable of supporting cell growth and attachment, and to have antibacterial and antifouling properties. Together with its ease of manufacture and application, it ought to make an ideal biomaterial and function well as a coating for implants. In this paper, atomic force microscopy was used to measure the adhesive forces between polymer-, protein- or polydopamine-coated surfaces and a silicon nitride or polydopamine-functionalised probes. Surfaces were further characterised by contact angle goniometry, and solutions by circular dichroism. Polydopamine was further characterised with infrared spectroscopy and Raman spectroscopy. It was found that polydopamine functionalisation of the atomic force microscope probe significantly reduced adhesion to all tested surfaces. For example, adhesion to mica fell from 0.27 ± 0.7 nN nm-1 to 0.05 ± 0.01 nN nm-1. The results suggest that polydopamine coatings are suitable to be used for a variety of biomedical applications