RT Journal Article
T1 Electron microscopy approach to the wetting dynamics of single organosilanized mesopores
A1 Rodriguez, C.
A1 Torres-Costa, V.
A1 Bittner, A. M.
A1 Morin, S.
A1 Cascajo Castresana, M.
A1 Chiriaev, S.
A1 Modin, E.
A1 Chuvilin, A.
A1 Manso Silván, M.
AB Columnar mesoporous silicon (PSi) with hydrophobic vs. hydrophilic chemistries was chosen as a model for the local (pore-by-pore) study of water-pore interactions. Tomographic reconstructions provided a 3D view of the ramified pore structure. An in situ study of PSi wetting was conducted for categorized pore diameters by environmental scanning TEM. An appropriate setting of the contrast allows for the normalization of the gray scale in the images as a function of relative humidity (RH). This allows constructing an isotherm for each single pore and a subsequent averaging provides an isotherm for each pore size range. The isotherms systematically point to an initial adsorption through the formation of water adlayers, followed by a capillary filling process at higher RH. The local isotherms correlate with (global) gravimetric determination of wetting. Our results point at the validation of a technique for the study of aging and stability of single-pore nanoscale devices.
SN 2589-0042
YR 2023
FD 2023-10-20
LK https://hdl.handle.net/11556/3168
UL https://hdl.handle.net/11556/3168
LA eng
NO Rodriguez , C , Torres-Costa , V , Bittner , A M , Morin , S , Cascajo Castresana , M , Chiriaev , S , Modin , E , Chuvilin , A & Manso Silván , M 2023 , ' Electron microscopy approach to the wetting dynamics of single organosilanized mesopores ' , iScience , vol. 26 , no. 10 , 107981 . https://doi.org/10.1016/j.isci.2023.107981
NO Publisher Copyright: © 2023 The Author(s)
NO The current research was funded at UAM through grant PID2020-112770RB-C22 by MCIN/AEI/10.13039/501100011033. The work at CIC nanoGUNE was supported with grants PID2019-104650GB-C22 and MDM-2016-0618, both by MCIN, and with Elkartek project “ng20” by the Government of the Basque Country. SM acknowledges York University and CIC nanoGUNE for their support during her sabbatical and subsequent visits. C. Rodriguez participated in PSi synthesis and characterization, including wetting experiments, performed most of wetSTEM image analysis and produced a first draft version. V. Torres-Costa participated in PSi synthesis and reviewed all drafts. A.M. Bittner raised funds, conceived the wetting experiments, participated in the same and reviewed all drafts. S. Morin conceived the wetting experiments, participated in the same and reviewed all drafts. M. Cascajo Castresana participated in wetting experiments and reviewed all drafts. S. Chiriaev participated in He ion microscope characterization and reviewed all drafts. E. Modin and A. Chuvilin participated in tomographic and wetting characterization and reviewed all drafts. M Manso Silvan raised funds, conceived the characterization, participated in the same and reviewed all drafts. The authors declare no competing interests. We worked to ensure gender balance in the recruitment of human subjects. We worked to ensure ethnic or other types of diversity in the recruitment of human subjects. The current research was funded at UAM through grant PID2020-112770RB-C22 by MCIN / AEI /10.13039/501100011033. The work at CIC nanoGUNE was supported with grants PID2019-104650GB-C22 and MDM-2016-0618 , both by MCIN, and with Elkartek project “ng20” by the Government of the Basque Country. SM acknowledges York University and CIC nanoGUNE for their support during her sabbatical and subsequent visits.
DS TECNALIA Publications
RD 30 jul 2024