GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Preparation of Fine Porous Ultrafiltration Membranes from Polyacrylonitrile
    Trans Tech Publications, Ltd. ; 2020
    In:  Key Engineering Materials Vol. 869 ( 2020-10), p. 437-442
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 869 ( 2020-10), p. 437-442
    Abstract: PAN membranes were prepared from mixture of good and weak solvents by two different methods. Immersion precipitation method with and without volatile component evaporation used for membrane preparation. From analysis of Hansen solubility parameters DMSO chosen as good solvent and acetone chosen as weak solvent. The effect of volatile weak solvent investigated on pore size and filtration performance. By evaporation of acetone, it was possible to increase polymer concentration on casting solution and obtain smaller pore size in comparison to membrane prepared from DMSO. Membranes prepared from DMSO/acetone without solvent evaporation had even lower pore size and higher filtration performances. It was shown, that presence of acetone creates more pronounced effect on pore size than increase of polymer concentration. As a result membranes with pore size 3.7 nm obtained from Acetone/DMSO mixture with composition 50:50 and polymer concentration 50 % by immersion precipitation Resulted membranes have permeance 23 kg/m 2 ·h·bar and retention of Lysozime 99 %.
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.869
    DOI: 10.4028/www.scientific.net/KEM.869.437
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2020
    detail.hit.zdb_id: 2073306-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Electrostatic Aerosol Deposition Method for the Formation of an Ensemble of Monodisperse Particles on a Substrate
    Trans Tech Publications, Ltd. ; 2016
    In:  Journal of Nano Research Vol. 41 ( 2016-5), p. 53-62
    Details
    In: Journal of Nano Research, Trans Tech Publications, Ltd., Vol. 41 ( 2016-5), p. 53-62
    Abstract: We have developed an aerosol-based technique for deposition of monodisperse ensembles of spherical SiO 2 nanoparticles on the surface of single-crystal silicon substrate (1 cm 2 ) with an average surface particle density of about 2.1±0.4 particles per μm 2 . The obtained samples of monodisperse ensembles SiO 2 nanoparticles was characterized by scanning and transmission electron microscopy. The ensemble of deposited nanoparticles is characterized by a narrow size distribution with a modal size of 26.6 nm and a full width at half maximum of 3.5 nm according to the atomic force microscopy data. We have demonstrated the use of the obtained test structure to determine the effective radius of the tip of an atomic force microscope.
    Type of Medium: Online Resource
    ISSN: 1661-9897
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/JNanoR.41
    DOI: 10.4028/www.scientific.net/JNanoR.41.53
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2016
    detail.hit.zdb_id: 2410713-X
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Comparison of Thermal and Electrical Sintering of Aerosol Silver Nanoparticles in Process of Aerosol Jet Printing
    Trans Tech Publications, Ltd. ; 2020
    In:  Key Engineering Materials Vol. 834 ( 2020-3), p. 10-15
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 834 ( 2020-3), p. 10-15
    Abstract: This article presents a study and comparison of two sintering processes of aerosol nanoparticles in process of aerosol jet printing. Silver lines were deposited on glass and plastic substrates. Then obtained lines were sintered in two ways, specifically, thermal and electric methods. As a result of experiments, it was found that during the deposition process, the width of printed lines, with the same printing parameters, is in the range from 92.3 to 110.4 μm and the height from 1.1 to 1.4 μm. The resistivity of lines on the glass substrate, sintered in two ways, is approximately 12 μΩ·cm. While the resistivity of the lines on the plastic substrate, sintered by electric and thermal methods, is 11.1 and 17.2 μΩ·cm, respectively. Thus, electrical sintering allows one to achieve a smaller (by a factor of 1.5) electrical resistivity of lines on a plastic substrate than thermal sintering, which makes it possible to obtain conductive flexible structures with better characteristics.
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.834
    DOI: 10.4028/www.scientific.net/KEM.834.10
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2020
    detail.hit.zdb_id: 2073306-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    Preparation of Polyacrylonitrile Membranes by Vapor Induced Phase Separation
    Trans Tech Publications, Ltd. ; 2019
    In:  Key Engineering Materials Vol. 816 ( 2019-8), p. 174-179
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 816 ( 2019-8), p. 174-179
    Abstract: The porous membranes made of polyacrylonitrile (PAN) were developed by vapor induced phase separation (VIPS) technique. The effect of vapor exposure time on membrane permeability and a porous structure was investigated. All membranes exposed in water vapors have a sponge-like structure in contrast to the finger-like structure of PAN membrane obtained by non-solvent induced phase separation (NIPS) method. The obtained membranes demonstrated water permeance up to 405 kg/m 2 •h•bar and the retention of Blue Dextran (MW 70 kDa) on the level of 52-83%.
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.816
    DOI: 10.4028/www.scientific.net/KEM.816.174
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2019
    detail.hit.zdb_id: 2073306-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Comparison of Laser Sintering of Silver Nanoparticles in Form of Microdroplets of Nanoink and Dry Nanoparticles Obtained in a Gas Discharge
    Trans Tech Publications, Ltd. ; 2020
    In:  Key Engineering Materials Vol. 834 ( 2020-3), p. 37-41
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 834 ( 2020-3), p. 37-41
    Abstract: This article presents a comparison of laser sintering of deposited nanoparticles obtained by two methods of aerosol jet printing. The first printing method was based on the use of silver nanoparticles in the form of microdroplets contained in nanoink. In the second method, dry nanoparticles were obtained as a result of gas-discharge synthesis without the use of solvents. The nanoparticles in both experiments were deposited on a glass substrate in the form of a line with a width of about 50 ± 5 μm and a height of about 1.0 ± 0.2 μm. Then, the obtained lines were sintered using laser radiation with a wavelength of 1064 nm. As a result of experiments on the deposition and sintering, it was found that the electrical resistivity of the lines of sintered nanoparticles in the form of nanoink and dry nanoparticles obtained in a gas discharge was 8.1 and 4.9 μΩ·cm, respectively. Thus, it has been demonstrated that laser sintering of nanoparticles obtained in a gas discharge makes it possible to achieve a lower specific resistance of lines than the method of aerosol printing using nanoink. In addition, the electrical resistivity of the lines of sintered nanoparticles obtained in a gas discharge is 3 times greater than the electrical resistivity of bulk silver, which is a sufficient result for the creation of conductive elements of printed electronics.
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.834
    DOI: 10.4028/www.scientific.net/KEM.834.37
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2020
    detail.hit.zdb_id: 2073306-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Effect of Methods of Changing in Focusing Ratio on Line Geometry in Aerosol Jet Printing
    Trans Tech Publications, Ltd. ; 2018
    In:  Key Engineering Materials Vol. 779 ( 2018-9), p. 159-164
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 779 ( 2018-9), p. 159-164
    Abstract: In this article, a study is presented of the effect of the focusing ratio (FR) on the line geometry in aerosol printing process. The FR was defined as the ratio of sheath flow to aerosol flow. The FR was varied from 1 to 20. In the experiment, different nozzles were used, with outlet diameter of 100, 150 and 300 μm. It was established that in increasing FR from 1 to 20 by reducing the aerosol flow with constant sheath flow rate, line width and thickness are reduced in more than 40 and 10 times respectively. It is also found that by increasing the FR from 2 to 8 by changing only sheath flow with constant aerosol flow rate, line width is reduced from 125 to 75 μm, while line thickness is increased from 7.1 to 10.3 μm. It is shown that this feature is related to the quantity of the matter deposited on the substrate, which is directly related to aerosol flow. The achieved result is important for designing current-carrying lines of electronic circuits which require a specific aspect ratio and high circuit element density
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.779
    DOI: 10.4028/www.scientific.net/KEM.779.159
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2018
    detail.hit.zdb_id: 2073306-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...