scholarly journals A hydrogen-bonding structure in self-formed nanodroplets of water adsorbed on amorphous silica revealed via surface-selective vibrational spectroscopy

2020 ◽  
Vol 22 (46) ◽  
pp. 27031-27036
Author(s):  
Shu-hei Urashima ◽  
Taku Uchida ◽  
Hiroharu Yui
Keyword(s):  
Hydrogen Bonding ◽  
Friction Coefficient ◽  
Surface Properties ◽  
Vibrational Spectroscopy ◽  
Amorphous Silica ◽  
Water Adsorption ◽  
Material Surface ◽  
Bonding Structure

Water adsorption onto a material surface is known to change macroscopic surface properties such as wettability and friction coefficient.

scholarly journals Effect of Water Adsorption on Cation-Surface Interaction Energy in the Na-Mordenite of 5.5 : 1 Si/Al Ratio

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Sekou Diaby
Keyword(s):  
Activation Energy ◽  
Surface Properties ◽  
Surface Potential ◽  
Water Adsorption ◽  
Adsorbed Water ◽  
Material Surface ◽  
Water Molecules ◽  
Zeolite Surface ◽  
Inner Surface ◽  
Insight Into

The mobility of the Na+cations localized at the inner surface of the studied mordenite zeolite depends on the material surface properties. In this work, we show that the activation energy,ΔEhop, relating to the Na+cation hopping displacement is associated to the surface potential and therefore can be used to get a better insight into the zeolite surface properties. Indeed, when molecules as water are adsorbed at the surface, they modify the surface potential energy and hence influence the value ofΔEhop. If the adsorbed molecules are polar they directly interact with the cations which become more mobile. The more theΔEhopvalue is, the less the amount of adsorbed water molecules is. Alterations of theΔEhopvalue with respect to the amount of adsorbed water molecules are interpreted using the Dubinin model which is based on simple adsorption principle.

scholarly journals Decoding the molecular water structure at complex interfaces through surface-specific spectroscopy of the water bending mode

2020 ◽  
Vol 22 (19) ◽  
pp. 10934-10940 ◽  
Author(s):  
Takakazu Seki ◽  
Chun-Chieh Yu ◽  
Xiaoqing Yu ◽  
Tatsuhiko Ohto ◽  
Shumei Sun ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Vibrational Spectroscopy ◽  
Water Structure ◽  
Molecular Water ◽  
Interfacial Water ◽  
Aqueous Interfaces ◽  
Bonding Structure ◽  
Bending Mode ◽  
Solid Water

The water bending mode vibrational spectroscopy provides a new avenue for unveiling the hydrogen bonding structure of interfacial water at complex aqueous interfaces such as solid–water and bio–water interfaces.

scholarly journals Special Issue: Biointerface Coatings for Biomaterials and Biomedical Applications

Coatings ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 423
Author(s):  
Hsien-Yeh Chen ◽  
Peng-Yuan Wang
Keyword(s):  
Surface Properties ◽  
Material Science ◽  
Biomedical Applications ◽  
Material Surface ◽  
Special Issue

The success of recent material science and applications in biotechnologies should be credited to developments of malleable surface properties, as well as the adaptation of conjugation reactions to the material surface [...]

scholarly journals Antibacterial Properties of Plasma-Activated Perfluorinated Substrates with Silver Nanoclusters Deposition

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 182
Author(s):  
Petr Slepička ◽  
Silvie Rimpelová ◽  
Nikola Slepičková Kasálková ◽  
Dominik Fajstavr ◽  
Petr Sajdl ◽  
...  
Keyword(s):  
Surface Properties ◽  
Antibacterial Properties ◽  
Argon Plasma ◽  
Antimicrobial Effect ◽  
Silver Nanoclusters ◽  
Plasma Modification ◽  
Material Surface ◽  
Silver Deposition ◽  
Force Microscopy ◽  
Atomic Force

This article is focused on the evaluation of surface properties of polytetrafluoroethylene (PTFE) nanotextile and a tetrafluoroethylene-perfluoro(alkoxy vinyl ether) (PFA) film and their surface activation with argon plasma treatment followed with silver nanoclusters deposition. Samples were subjected to plasma modification for a different time exposure, silver deposition for different time periods, or their combination. As an alternative approach, the foils were coated with poly-L-lactic acid (PLLA) and silver. The following methods were used to study the surface properties of the polymers: goniometry, atomic force microscopy, and X-ray photoelectron microscopy. By combining the aforementioned methods for material surface modification, substrates with antibacterial properties eliminating the growth of Gram-positive and Gram-negative bacteria were prepared. Studies of antimicrobial activity showed that PTFE plasma-modified samples coated with PLLA and deposited with a thin layer of Ag had a strong antimicrobial effect, which was also observed for the PFA material against the bacterial strain of S. aureus. Significant antibacterial effect against S. aureus, Proteus sp. and E. coli has been demonstrated on PTFE nanotextile plasma-treated for 240 s, coated with PLLA, and subsequently sputtered with thin Ag layer.

scholarly journals Titanium oral implants: surface characteristics, interface biology and clinical outcome

2010 ◽  
Vol 7 (suppl_5) ◽  
Author(s):  
Anders Palmquist ◽  
Omar M. Omar ◽  
Marco Esposito ◽  
Jukka Lausmaa ◽  
Peter Thomsen
Keyword(s):  
Surface Properties ◽  
Cellular Response ◽  
Randomized Clinical Trials ◽  
Three Dimensional ◽  
Cell Communication ◽  
Surface Characteristics ◽  
Titanium Implants ◽  
Material Surface ◽  
Oral Implants

Bone-anchored titanium implants have revolutionized oral healthcare. Surface properties of oral titanium implants play decisive roles for molecular interactions, cellular response and bone regeneration. Nevertheless, the role of specific surface properties, such as chemical and phase composition and nanoscale features, for the biological in vivo performance remains to be established. Partly, this is due to limited transfer of state-of-the-art preparation techniques to complex three-dimensional geometries, analytical tools and access to minute, intact interfacial layers. As judged by the available results of a few randomized clinical trials, there is no evidence that any particular type of oral implant has superior long-term success. Important insights into the recruitment of mesenchymal stem cells, cell–cell communication at the interface and high-resolution imaging of the interface between the surface oxide and the biological host are prerequisites for the understanding of the mechanisms of osseointegration. Strategies for development of the next generation of material surface modifications for compromised tissue are likely to include time and functionally programmed properties, pharmacological modulation and incorporation of cellular components.

Lithium-Mediated Organofluorine Hydrogen Bonding: Structure of Lithium Tetrakis(3,5-bis(trifluoromethyl)phenyl)borate Tetrahydrate

1994 ◽  
Vol 33 (24) ◽  
pp. 5374-5375 ◽  
Author(s):  
Josh H. Golden ◽  
Paul F. Mutolo ◽  
Emil B. Lobkovsky ◽  
Francis J. DiSalvo
Keyword(s):  
Hydrogen Bonding ◽  
Bonding Structure
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