Поиск :
Личный кабинет :
Электронный каталог: Polezhaeva, O. A. - Track-Etched Membranes as Porous Substrates with a Preferential Direction of Capillary Flow
Polezhaeva, O. A. - Track-Etched Membranes as Porous Substrates with a Preferential Direction of Capillary Flow
Статья
Автор: Polezhaeva, O. A.
Surfaces and Interfaces: Track-Etched Membranes as Porous Substrates with a Preferential Direction of Capillary Flow
б.г.
ISBN отсутствует
Автор: Polezhaeva, O. A.
Surfaces and Interfaces: Track-Etched Membranes as Porous Substrates with a Preferential Direction of Capillary Flow
б.г.
ISBN отсутствует
На полку
Статья
Polezhaeva, O.A.
Track-Etched Membranes as Porous Substrates with a Preferential Direction of Capillary Flow / O.A.Polezhaeva, O.V.Kristavchuk, A.N.Nechaev, O.L.Orelovich, P.Y.Apel. – Text : electronic // Surfaces and Interfaces. – 2026. – Vol. 94. – P. 109573. – URL: https://doi.org/10.1016/j.surfin.2026.109573. – Bibliogr.: 68.
Control over capillary flow through porous media holds significant promise for practical applications in microfluidic devices. The track etching technique, which involves irradiation with energetic heavy ions and chemical treatment, offers a unique opportunity to produce pores with predetermined orientation, length, and radius. Thus, it was expected that anisotropic porous polymer films with controllable capillary flow could be fabricated using the track etching technique. Conditions that guaranteed the formation of a fully interconnected 3D network of straight cylindrical pores were formulated and fulfilled in an experiment. By irradiating polymer films with energetic heavy ions at various angles of incidence, we created intersecting arrays of tracks. Through chemical etching, these arrays were then transformed into three-dimensional porous structures with pore channels having diameters in the submicron range. The capillary imbibition of a non-evaporating liquid into the fabricated porous substrates was investigated. Our findings indicate that the imbibition can be highly anisotropic, influenced by the spatial arrangement of the track-etched pore channels. The method developed in this study paves the way for producing porous substrates with a preferential direction of capillary flow. By varying the morphological parameters of the 3D structure, precise control over the degree of anisotropy and capillary flow rate can be achieved. The developed 3D structures can be employed as model substrates to study the topological effects on fluid flow in porous media. Practical applications in microfluidics, specifically in point-of-care devices, are also feasible.
Спец.(статьи,препринты) = С 44 б - Разделение химических элементов экстракционными и ионообменными методами
ОИЯИ = ОИЯИ (JINR)2026
Polezhaeva, O.A.
Track-Etched Membranes as Porous Substrates with a Preferential Direction of Capillary Flow / O.A.Polezhaeva, O.V.Kristavchuk, A.N.Nechaev, O.L.Orelovich, P.Y.Apel. – Text : electronic // Surfaces and Interfaces. – 2026. – Vol. 94. – P. 109573. – URL: https://doi.org/10.1016/j.surfin.2026.109573. – Bibliogr.: 68.
Control over capillary flow through porous media holds significant promise for practical applications in microfluidic devices. The track etching technique, which involves irradiation with energetic heavy ions and chemical treatment, offers a unique opportunity to produce pores with predetermined orientation, length, and radius. Thus, it was expected that anisotropic porous polymer films with controllable capillary flow could be fabricated using the track etching technique. Conditions that guaranteed the formation of a fully interconnected 3D network of straight cylindrical pores were formulated and fulfilled in an experiment. By irradiating polymer films with energetic heavy ions at various angles of incidence, we created intersecting arrays of tracks. Through chemical etching, these arrays were then transformed into three-dimensional porous structures with pore channels having diameters in the submicron range. The capillary imbibition of a non-evaporating liquid into the fabricated porous substrates was investigated. Our findings indicate that the imbibition can be highly anisotropic, influenced by the spatial arrangement of the track-etched pore channels. The method developed in this study paves the way for producing porous substrates with a preferential direction of capillary flow. By varying the morphological parameters of the 3D structure, precise control over the degree of anisotropy and capillary flow rate can be achieved. The developed 3D structures can be employed as model substrates to study the topological effects on fluid flow in porous media. Practical applications in microfluidics, specifically in point-of-care devices, are also feasible.
Спец.(статьи,препринты) = С 44 б - Разделение химических элементов экстракционными и ионообменными методами
ОИЯИ = ОИЯИ (JINR)2026
