Theoretical and experimental investigation of aqueous liquids contained in carbon nanotubes

Date

2005-06-01

Author

Yarin, AL
Güvenç Yazıcıoğlu, Almıla
Megaridis, CM
Rossi, MP
Gogotsi, Y

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

174
views

0
downloads

The dynamic response-as caused by different means of thermal stimulation or pressurization-of aqueous liquid attoliter volumes contained inside carbon nanotubes is investigated theoretically and experimentally. The experiments indicate an energetically driven mechanism responsible for the dynamic multiphase fluid behavior visualized in real time with high spatial resolution using electron microscopy. The theoretical model is formulated using a continuum approach, which combines temperature-dependent mass diffusion with intermolecular interactions in the fluid bulk, as well as in the vicinity of the carbon walls. Intermolecular forces are modeled by Lennard-Jones potentials. Several one-dimensional and axisymmetric cases are considered. These include situations which physically represent liquid volume pinchoff, jetting, or fluid relocation due to thermal stimulation by a steady or modulated electron beam, as well as liquid precipitation (condensation) from vapor due to overcooling or pressurization. Comparisons between theoretical predictions and experimental data demonstrate the ability of the model to describe the characteristic trends observed in the experiments. (c) 2005 American Institute of Physics.

URI

https://hdl.handle.net/11511/93561

Journal

JOURNAL OF APPLIED PHYSICS

DOI

https://doi.org/10.1063/1.1944214

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Thermal stimulation of aqueous volumes contained in carbon nanotubes: Experiment and modeling Yarin, AL; Güvenç Yazıcıoğlu, Almıla; Megaridis, CM (2005-01-01) The dynamic response, as caused by thermal stimulation, of aqueous liquid attoliter volumes contained inside multiwall carbon nanotubes is investigated theoretically and experimentally. The experiments indicate an energetically driven mechanism responsible for the dynamic multiphase fluid behavior visualized under high resolution in the transmission electron microscope. The theoretical model is formulated using a continuum approach, which combines temperature-dependent diffusion with intermolecular interact...
EXPERIMENTAL INVESTIGATION OF THE AXIAL IMPREGNATION OF ORIENTED FIBER-BUNDLES BY CAPILLARY FORCES BAYRAMLI, E; POWELL, RL (1991-05-01) Capillary impregnation of a viscous liquid into carbon fiber bundles is investigated experimentally. Axial impregnation is examined in which flow occurs primarily parallel to the fibers' axes. For silicone oils, as well as for a curing epoxy system, the kinetics of axial impregnation follow closely h-alpha-t1/2, where h is the average displacement of the advancing front and t is the time of impregnation. The impregnation rates are higher than those predicted by theoretical models based upon simple geomet...
Modelling of Diffusion in Random Packings of Core-Shell Particles Hatipoğlu, Emre; Koku, Harun (Hacettepe University, 2017-04-01) Core-Shell particles are commonly used materials in chromatography. In this study, a mathematical model that mimics diffusion around Core-Shell particles was developed. A random-walk based algorithm was implemented to simulate diffusion and a Core-Shell particle geometry was computationally formed, based on simple geometric constructs and relations. Diffusion simulations were carried out on a randomly packed geometry formed from these particles. The behavior of time-dependent diffusivity data obtained from ...
Theoretical investigations of the equol molecule: semi-empirical and density functional theory calculations Erkoc, F; Yilmazer, M; Erkoç, Şakir (Elsevier BV, 2005-01-14) The structural and electronic properties of the equol molecule, an estrogenic isoflavone. have been investigated theoretically by performing semi-empirical self-consistent field molecular orbital and density functional theory calculations. The geometry of the system has been optimized at the level of AMI method and the electronic properties have been calculated at the level of B3LYP functional.
Theoretical and experimental investigation of water-gas shift reaction over supported copper/iron oxide catalysts Yalçın, Özgen; Önal, Işık; Department of Chemical Engineering (2017) Density functional theory calculations were carried out to investigate the role of the chromium and copper, which were demonstrated to act as textural and catalytic promoters, respectively, for the Fe3O4-Cr2O3-CuO catalyst system by in situ experimental studies at the atomic scale. There is a minor effect of Cr on the dissociative adsorption of H2O, but no effect on CO adsorption on the Feoct2 termination of Fe3O4 (111) surface indicating that Cr does not act as a chemical promoter. Copper promotion of the ...

Citation Formats

A. Yarin, A. Güvenç Yazıcıoğlu, C. Megaridis, M. Rossi, and Y. Gogotsi, “Theoretical and experimental investigation of aqueous liquids contained in carbon nanotubes,” JOURNAL OF APPLIED PHYSICS, vol. 97, no. 12, pp. 0–0, 2005, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/93561.