Autor: Wojciechowski, W - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Auxetics as entropy filters - possible application
Autorzy:: Wojciechowski, K. W.
Kempinski, W.
Powiązania:: https://bibliotekanauki.pl/articles/1938609.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Gdańska
Tematy:: superfluidity
entropy filters
auxetics
3He isotope
Opis:: In this note a sketch of the idea of applying auxetics to separation of 3He from a mixture of 4He and 3He by using auxetic entropy filters is presented.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2016, 20, 3; 271-272
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Negative Poissons ratio and percolating structures
Autorzy:: Wojciechowski, K. W.
Novikov, V. V.
Powiązania:: https://bibliotekanauki.pl/articles/1964096.pdf
Data publikacji:: 2001
Wydawca:: Politechnika Gdańska
Tematy:: auxetics
polymers
elastic properties
percolation
percolating structures
Poisson ratio
renormalization group
Opis:: Elastic properties of non-uniform, two-component systems are studied in frames of a model of percolation on a simple cubic lattice. It is shown that as the ratio of the bulk moduli of the components tends to zero, kappa =K/sub s//K/sub h/ to 0 (where s,h denote the softer and harder phase, respectively), the Poisson's ratio of the system tends to 0.2 at the percolation threshold of the harder phase, no matter what the values are of the Poisson's ratios of the components. A qualitatively new, collective mechanism leading to negative Poisson's ratio is suggested.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2001, 5, 1; 5-11
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Elastic properties of the rectangular crystalline phase of planar hard cyclic pentamers
Autorzy:: Tretiakov, K. V.
Wojciechowski, K. W.
Powiązania:: https://bibliotekanauki.pl/articles/1965832.pdf
Data publikacji:: 2001
Wydawca:: Politechnika Gdańska
Tematy:: elastic constants
Poisson ratio
hard molecule
anisotropic body
Monte Carlo simulations
computer simulation
close packing
orientational phase transition
Opis:: Structural and elastic properties of the densest known solid phase of two-dimensional (2D) system of hard cyclic pentamers (each pentamer is composed of five discs which centres are placed at vertices of a perfect pentagon of sides equal to the disc diameter, delta) are studied by Monte Carlo simulations. The present study confirms that at high densities the pentamers form a 2D solid structure of rectangular lattice with two pentamers (which librate, without rotation, around their mean orientations) in the unit cell. Elastic constants calculated for this structure show that, in contrast to densely packed 2D hard cyclic heptamers (composed of seven discs of centres forming a perfect heptagon of sides equal to the disc diameter delta), the pentamers do not exhibit anomalous Poisson's ratios.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2001, 5, 3; 331-340
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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