Relevant bibliographies by topics / Capillary condensation

Academic literature on the topic 'Capillary condensation'

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Published: 4 June 2021
Last updated: 10 March 2023

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Journal articles on the topic "Capillary condensation"

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Guyer, R. A. "Capillary condensation refrigerator." Physical Review B 47, no. 17 (May 1, 1993): 11591–94. http://dx.doi.org/10.1103/physrevb.47.11591.

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Sing, Kenneth S. W., and Ruth T. Williams. "Historical aspects of capillarity and capillary condensation." Microporous and Mesoporous Materials 154 (May 2012): 16–18. http://dx.doi.org/10.1016/j.micromeso.2011.09.022.

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Evans, R., and U. Marini Bettolo Marconi. "Capillary condensation versus prewetting." Physical Review A 32, no. 6 (December 1, 1985): 3817–20. http://dx.doi.org/10.1103/physreva.32.3817.

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Dobbs, H. T., G. A. Darbellay, and J. M. Yeomans. "Capillary Condensation Between Spheres." Europhysics Letters (EPL) 18, no. 5 (March 1, 1992): 439–44. http://dx.doi.org/10.1209/0295-5075/18/5/011.

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Bojan, M. J., E. Cheng, M. W. Cole, and W. A. Steele. "Topologies of capillary condensation." Adsorption 2, no. 1 (1996): 51–58. http://dx.doi.org/10.1007/bf00127098.

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He, Yun Li, Hai Peng Liu, Shi Qiao Gao, and Cai Feng Wang. "Capillary Condensation Adhesion Phenomena and Analysis of the Micromechanical Gyroscope." Key Engineering Materials 562-565 (July 2013): 251–54. http://dx.doi.org/10.4028/www.scientific.net/kem.562-565.251.

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In MEMS, the size of micro-structure is usually in the micron and even nanoscale. It's easier to form capillary phenomenon than the macroscopic system. In view of this phenomenon, this article is based on the micro-mechanical gyroscope as the research object, to analyze the occurrence of capillary condensation of adhesion phenomenon. Firstly, we derive the Kelvin equation for capillary condensation, and then combination of the Kelvin equation introduce the capillary condensation of the adhesion phenomenon; Secondly, it analyzes the dynamics characteristics of its structure existing the liquid bridge, and analyzes the causes of the liquid bridge; Finally, it analyzes the capillary adhesion phenomena on the performance of the micro-mechanical gyroscope,as well as how to avoid the generation of capillary condensation adhesion.
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Röcken, Petra, and Pedro Tarazona. "Capillary condensation in structured pores." Journal of Chemical Physics 105, no. 5 (August 1996): 2034–43. http://dx.doi.org/10.1063/1.472072.

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Calbi, M. Mercedes, Flavio Toigo, Silvina M. Gatica, and Milton W. Cole. "Capillary condensation for quantum fluids." Physical Review B 60, no. 21 (December 1, 1999): 14935–42. http://dx.doi.org/10.1103/physrevb.60.14935.

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Lazarowich, R. J., and P. Taborek. "Superfluid Onset and Capillary Condensation." Journal of Low Temperature Physics 149, no. 3-4 (August 22, 2007): 151–55. http://dx.doi.org/10.1007/s10909-007-9506-7.

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Saam, W. F. "Wetting, Capillary Condensation and More." Journal of Low Temperature Physics 157, no. 3-4 (July 18, 2009): 77–100. http://dx.doi.org/10.1007/s10909-009-9904-0.

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Dissertations / Theses on the topic "Capillary condensation"

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Pozzato, Alessandro. "Capillary condensation in nanostructured surfaces." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3426628.

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The subject of this thesis is the study of the capillary condensation phenomenon in nanostructured surfaces. The main motivation behind this work was to test recent scaling theories about the capillary filling in capped capillaries. Adsorption isotherms of Argon were measured at a temperature slightly above its triple-point with a torsional microbalance. A key element for this kind of experiments was the availability of surfaces patterned with an array of very regular structures (e.g. rectangular wells or cylindrical holes). To fabricate these substrates was fundamental to develop a new fabrication methodology based on advanced lithographic techniques. The optimized methodology relied on nanoimprint lithography (NIL), wet etching (Buffered Oxide Etch solution) and plasma etching in an Inductively Coupled Plasma (ICP). With our process we were able to pattern extended surface areas of about 1 cm2 with a regular array of rectangular channels or hemispherical holes of nanometric size. In particular, we realized channels of two different widths (90 and 200 nm) and characteristic depths varying from 0.5 to 2 µm. Adsorption isotherms taken with these samples showed sharp and reversible jumps related to the capillary condensation of liquid argon in the channels. Their location was found to vary with the channel width, wider channels displaying the transition closer to bulk liquid-vapor condensation. A quantitative analysis of these positions in terms of the classical Kelvin equations yielded results which were in good agreement with the sample morphology deduced by electron microscopy. The precise shape of the capillary rise is currently under investigation to check whether it confirms the scaling predictions. The fabrication of the samples has been realized in the TASC-INFM Laboratory in Trieste under the supervising of Dr. Massimo Tormen, whereas the measurement runs of adsorption isotherms were carried out in the laboratory of Prof. Giampaolo Mistura in Padova.
Il tema di questa tesi è lo studio dello studio dei fenomeni di condensazione capillare in superfici nano strutturate. La motivazione principale a sostegno di questo lavoro è la verifica di recenti teorie che descrivono il riempimento di capillari chiusi ad una estremità. Le isoterme di assorbimento dell’argon sono state misurate a temperature leggermente superiori al suo punto triplo con l’uso di una micro bilancia torsionale. Un elemento chiave per questo tipo di esperimenti è la disponibilità di superfici strutturate con una distribuzione periodica di elementi regolari (ad esempio canali rettangolari o cavità cilindriche). Per costruire substrati di questo genere, è stato necessario sviluppare una metodologia fabbricativa innovativa, basata su tecniche di litografia avanzata. La metodologia ottimizzata si basa sulla cosiddetta nanoimprint lithography (NIL), su etching in ambiente liquido (uso di soluzioni BOE per l’etching di ossido di silicio) ed etching con uso di plasma gassosi in macchine di tipo ICP (Inductively Coupled Plasma). Con il nostro processo siamo in grado di strutturare superfici con area di estensione fino a 1 cm2 con distribuzione regolare di canali a sezione rettangolare o cavità di forma emisferica, entrambi con dimensioni caratteristiche nel range dei nanometri. In particolare abbiamo realizzato canali di due differenti larghezze (90 e 200 nm) e profondità caratteristica variabile tra 0:5 e 2 µm. Isoterme di adsorbimento misurate con questo tipo di campioni mostrano transizioni nette e reversibili correlabili con la condensazione capillare di argon liquido. La posizione di queste transizioni varia col variare della larghezza dei canali: canali più larghi evidenziano una transizione più vicina alla condensazione liquido-vapore in fase bulk. L’analisi quantitativa di questi risultati, in termini della classica equazione di Kelvin, mostra previsioni in buon accordo con la caratterizzazione diretta dei campioni tramite immagini al SEM. La definizione precisa del profilo della parete del canale è ancora sotto analisi per la conferma delle previsioni teoriche. La fabbricazione dei campioni è stata condotta presso il laboratorio nazionale TASC-INFM in Trieste sotto la supervisione del Dr. Massimo Tormen, mentre la misurazione delle isoterme di adsorbimento è stata condotta nel laboratorio del Prof. Giampaolo Mistura all’Università di Padova
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Hiratsuka, Tatsumasa. "Kinetic Nature of Capillary Condensation in Nanopores." 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225638.

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ZAMORA, ROBERT RONALD MAGUINA. "INFLUENCE OF CAPILLARY CONDENSATION IN NANOSCALE FRICTION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=6648@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Nesta tese, apresentamos um procedimento utilizado para a calibração do fotodetector e dos cantileveres utilizados em nosso AFM para a medida de força lateral. Desenvolvemos um código em Matlab para o controle do microscópio que permitiu a realização do estudo da influência da força normal na fricção. Também foi desenvolvido um segundo código em Matlab para a medida automatizada da adesão. Apresentamos e discutimos a influência da energia livre superficial na fricção e adesão de várias superfícies. Neste trabalho um estudo da influência da condensação capilar na forca lateral foi estudado para superfícies hidrofílicas, e hidrofóbicas. Encontramos que as nano asperezas podem realizar contatos singulares descritos pelo modelo de Hertz ou múltiplos contatos de acordo com o modelo de Greenwood. O tipo de contato entre as nano asperezas pode ser controlado através da hidrofobicidade e da umidade relativa no ambiente de medida. É verificado que os meniscos formados entre ponta e superfície influenciam a força lateral, através do aumento da força normal e também através da energia gasta pela ponta para arrastar ou deformar o capilar durante seu deslocamento sobre a superfície. O efeito da cinética de condensação capilar da água sobre a fricção foi também estudado. É mostrado que a molhabilidade é determinante para a definição dos mecanismos da dissipação de energia entre as nanoasperezas. Apresentamos também a influência da hidrofobicidade superficial no coeficiente de atrito. A correlação observada entre o ângulo de contato e o coeficiente de atrito reforça a importância da cinética da condensação capilar nos processos de fricção que ocorre na escala de nanômetros.
In this work, the procedures developed to the calibration of the AFM photodetector and cantilevers for lateral force measurements in our AFM is presented. A Matlab code that controls the microscope allows the study of the influence of the normal force on the lateral one. A second Matlab code was developed in order to study the adhesion forces in an automated way. We present and discuss the influence of the surface free energy on the friction and adhesion forces. In this work, the lateral forces were measured at hydrophilic and hydrophobic surfaces. It was observed that the nano asperities may form single asperity contacts described by the Hertz model as well as multi-asperity type of contacts described by the Greenwood model. The nanoasperity contact may be controlled by the wettability and ambient relative humidity. It is seen that the capillar formed between the tip and the surface influences the tip-surface normal force and the friction forces due to the dissipation of energy caused by the drag or brake of the capillar meniscous. The effect of capillary condensation kinetics was studied as well. It is shown that the surface wettability is determinant to the energy dissipation mechanism in nanoscale. The influence of the surface wettability on the friction coefficient is presented. The observed correlation between the friction coefficient and contact angle enhances the influence of the surface wettability and its kinetics in the friction forces at nanoscale.
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Darbellay, Georges Alexis. "Wetting and capillary condensation transitions in novel geometries." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303592.

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Soylemez, Emrecan. "Capillary Kinetics Between Multi Asperity Surfaces." Research Showcase @ CMU, 2014. http://repository.cmu.edu/dissertations/505.

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Capillary bridge formation between adjacent surfaces in humid environments is a ubiquitous phenomenon. Capillary forces are important in nature (granular materials, insect locomotion) and in technology (disk drives, adhesion). Although well studied in the equilibrium state, the dynamics of capillary formation merit further investigation. Here, we show that microcantilever crack healing experiments are a viable experimental technique for investigating the influence of capillary nucleation on crack healing between rough surfaces. To demonstrate the effects, a custom micromachine characterization system is built that allows for full environmental control (pressure, humidity, and gas composition) while retaining full micromachine characterization techniques (long working distance interferometry, electrical probe connectivity, actuation scripting capability). The system also includes an effective in situ surface plasma cleaning mechanism. The average spontaneous crack healing velocity, ̅, between plasma-cleaned hydrophilic polycrystalline silicon surfaces of nanoscale roughness is measured. A plot of ̅v versus energy release rate, G, reveals log-linear behavior, while the slope |d[log(v)]/dG| decreases with increasing relative humidity. An interface model that accounts for the nucleation time of water bridges by an activated process is developed to gain insight into the crack healing trends. This methodology enables us to gain insight into capillary bridge dynamics, with a goal of attaining a predictive capability for this important microelectromechanical systems (MEMS) reliability failure mechanism. A variety of alcohol vapors significantly reduce or perhaps eliminate wear in sliding micro-machined contacts. However, these vapors may increase adhesion due to the capillary forces. Equilibrium adhesion energies at various partial pressures are found for n-pentanol (long chain molecule) and ethanol (short chain molecule). For low partial pressures (p/ps=0.3), adhesion energy of n-pentanol is even larger than water.
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Gemici, Zekeriyya. "Effects and applications of capillary condensation in ultrathin nanoparticle assemblies." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59875.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 176-182).
The electrostatic layer-by-layer (LbL) assembly technique can be used to make uniform, conformal multi-stack nanoparticle thin films from aqueous solution, with precise thickness and roughness control over each stack. Much of the effort in this area has focused on the assembly and characterization of novel nanostructures. However, there is a scarcity of studies addressing critical barriers to commercialization of LbL technology, such as the lack of mechanical durability and the difficulty of incorporating a diverse set of functional organic molecules into aqueous solution-based nanoparticle assemblies. The versatility of existing chemical functionalization methods are limited by requirements for particular substrate surface chemistries, compatible solvents, and concerns over uncontrolled nanoparticle deposition. Here we describe the advantageous use of capillary condensation, a well-known natural phenomenon in nanoporous materials, as a more universal functionalization strategy. Capillary condensation of solvent molecules into nanoporous LbL films was shown to bridge neighboring nanoparticles via a dissolution-redeposition mechanism to impart mechanical durability to otherwise delicate films. In situ crosslinking ability of photosensitive capillary-condensates was demonstrated. Particle size-dependence of the capillary condensation process was studied theoretically and utilized experimentally to modulate refractive index over coating thickness to achieve broadband antireflection (AR) functionality. Multi-stack AR coatings with alternating high- and low-index stacks were also made, and the influence of inter-stack and surface roughness on film transparency were studied quantitatively. The equivalent-stack approximation was utilized and presented as an enabling design tool for fabricating sophisticated solution-based optical coatings. Surface wettability could also be modified using capillary condensation - either by condensation of adventitious vapors during an aging process leading to a loss of optimized film properties, or by advantageous condensation of carefully chosen hydrophobic or hydrophilic molecules to tune wettability. Finally, preliminary Young's moduli measurements of all-nanoparticle and polymer-nanoparticle composite films were made using strain induced elastic buckling instabilities for mechanical measurements (SIEBIMM).
by Gemici Zekeriyya.
Ph.D.
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Sundararajan, Mayur. "X-ray Scattering Study Of Capillary Condensation In Mesoporous Silica." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1355943408.

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Nasrallah, Hussein. "Capillary adhesion and friction : an approach with the AFM Circular Mode." Phd thesis, Université du Maine, 2011. http://tel.archives-ouvertes.fr/tel-00651818.

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The aim of this thesis is concerned with the influence of sliding velocity on capillary adhesion at the nanometer scale. In ambient conditions, capillary condensation which is a thermally activated process, allows the formation of a capillary meniscus at the interface between an atomic force microscope (AFM) probe and a substrate. This capillary meniscus leads to a capillary force that acts as an additional normal load on the tip, and affects the adhesion and friction forces. The Atomic Force Microscopy (AFM) offers interesting opportunities for the measurement of surface properties at the nanometer scale. Nevertheless, in the classical imaging mode, limitations are encountered that lead to a non stationary state. These limitations are overcome by implementing a new AFM mode (called Circular AFM mode). By employing the Circular AFM mode, the evolution of the adhesion force vs. the sliding velocity was investigated in ambient conditions on model hydrophilic and hydrophobic surfaces with different physical-chemical surface properties such as hydrophilicity. For hydrophobic surfaces, the adhesion forces or mainly van der Waals forces showed no velocity dependence, whereas, in the case of hydrophilic surfaces, adhesion forces, mainly due to capillary forces follow three regimes. From a threshold value of the sliding velocity, the adhesion forces start decreasing linearly with the logarithm increase of the sliding velocity and vanish at high sliding velocities. This decrease is also observed on a monoasperity contact between a atomically flat mica surface and a smooth probe, thus eliminating the possibility of the kinetics of the capillary condensation being related to a thermally activated nucleation process as usually assumed. Therefore, we propose a model based on a thermally activated growth process of a capillary meniscus, which perfectly explains the experimental results. Based on these results, we focused on directly investigating with the Circular mode the role of capillary adhesion in friction mechanisms. We investigated the influence of the sliding velocity on the friction coefficient, and a decrease following three regimes, similar to the sliding velocity dependence of the capillary adhesion, was observed for hydrophilic surfaces that possess a roughness higher than 0.1 nm. Whereas, an increase of the friction coefficient was observed on hydrophilic (Mica) or hydrophobic (HOPG) atomically flat surfaces that posses a roughness lower than 0.1 nm. However, in this latter case, the three regimes are not established. Finally, on a rough hydrophobic surface, the friction coefficient was sliding velocity independent. A direct comparison with capillary adhesion behavior with the sliding velocity is expected to give new insights to explain this interplay.
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Hung, Francisco Rodolfo. "Capillary Condensation and Freezing of Simple Fluids Confined in Cylindrical Nanopores." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-08092005-232433/.

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We present a molecular simulation study aimed at understanding the phase behavior of pure simple fluids, when they are confined inside nanopores of cylindrical geometry. In this situation, new surface-driven phases can appear, and phase transitions typical of bulk systems (gas-liquid, freezing) can be shifted to different conditions. A fundamental understanding of these phenomena is necessary for applications in separations, catalysis and nanotechnology. Studies of these phenomena can also provide important insights on the effect of surface forces, confinement and reduced dimensionality on the phase behavior of host molecules. We have performed two independent, but directly related studies: (1) freezing of carbon tetrachloride within multi-walled carbon nanotubes (MWCNT) of different diameters, and (2) capillary condensation and freezing of krypton within templated mesoporous silica materials (MCM-41). MWCNT and MCM-41 are representative of materials with strongly and weakly attractive walls, respectively. In the first part of this project, the structure and thermodynamic stability of the confined phases, as well as the temperatures and the order of the phase transitions were determined using dielectric relaxation spectroscopy measurements and Monte Carlo simulations in the grand canonical ensemble. A rich phase behavior with multiple transition temperatures was observed for such systems. In the second part of this project we developed realistic, atomistic models of MCM-41 type materials that include pore surface roughness and morphological defects in agreement with experimental results. Grand Canonical Monte Carlo simulations show that these variables have a profound influence on gas-liquid and freezing transitions in confinement.
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Kim, Seonmin. "Surface modification of metal oxide nanoparticles by capillary condensation and its application." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3852.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2006.
Thesis research directed by: Chemical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Books on the topic "Capillary condensation"

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Shekarriz, Alireza. Enhancement of filmwise condensation using capillary porous fins. 1988.

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Thermocapillary flow with evaporation and condensation at low gravit. [Washington, DC: National Aeronautics and Space Administration, 1995.

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Mate, C. Mathew, and Robert W. Carpick. Tribology on the Small Scale. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199609802.001.0001.

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Friction, lubrication, adhesion, and wear are prevalent physical phenomena in everyday life and in many key technologies. The goal of this book is to incorporate a bottom up approach to friction, lubrication, and wear into a versatile textbook on tribology. This is done by focusing on how these tribological phenomena occur on the small scale—the atomic to the micrometer scale—a field often called nanotribology. The book covers the microscopic origins of the common tribological concepts: roughness, elasticity, plasticity, friction coefficients, and wear coefficients. Some macroscale concepts (like elasticity) scale down well to the micro- and atomic scale, while other macroscale concepts (like hydrodynamic lubrication) do not. In addition, this book also has chapters on topics not typically found in tribology texts: surface energy, surface forces, lubrication in confined spaces, and the atomistic origins of friction and wear. These chapters covered tribological concepts that become increasingly important at the small scale: capillary condensation, disjoining pressure, contact electrification, molecular slippage at interfaces, atomic scale stick-slip, and bond breaking. Numerous examples are provided throughout the book on how a nanoscale understanding of tribological phenomena is essential to the proper engineering of important new technologies such as MEMS, disk drives, and nanoimprinting. For the second edition, all the chapters have been revised and updated, with many new sections added to incorporate the most recent advancements in nanoscale tribology. Another important enhancement to the second edition is the addition of problem sets at the end of each chapter.
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Book chapters on the topic "Capillary condensation"

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Capozza, Rosario, Itay Barel, and Michael Urbakh. "Effect of Capillary Condensation on Nanoscale Friction." In Fundamentals of Friction and Wear on the Nanoscale, 313–30. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10560-4_15.

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Lin, S. "A comparison of metastable flows of condensation in Laval nozzles and vaporization in capillary tubes." In Fluid- and Gasdynamics, 359–65. Vienna: Springer Vienna, 1994. http://dx.doi.org/10.1007/978-3-7091-9310-5_39.

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DeBusk, Melanie Moses, Brian Bischoff, James Hunter, James Klett, Eric Nafziger, and Stuart Daw. "Understanding the Effect of Dynamic Feed Conditions on Water Recovery from IC Engine Exhaust by Capillary Condensation with Inorganic Membranes." In Ceramic Transactions Series, 141–52. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118771327.ch16.

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"capillary condensation." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 189. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_30387.

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"Capillary Condensation in Confined Media." In Handbook of Nanophysics, 219–36. CRC Press, 2010. http://dx.doi.org/10.1201/9781420075410-19.

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Okazaki, Morio. "Roles of Capillary Condensation in Adsorption." In Studies in Surface Science and Catalysis, 11–26. Elsevier, 1993. http://dx.doi.org/10.1016/s0167-2991(08)63493-x.

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Morishige, K. "Capillary condensation in templated nanoporous materials." In Molecular Sieves: From Basic Research to Industrial Applications, Proceedings of the 3rd International Zeolite Symposium (3rd FEZA), 695–702. Elsevier, 2005. http://dx.doi.org/10.1016/s0167-2991(05)80402-1.

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Burg, Stanley P. "Capillary Condensation in Non-Waxed Cardboard Boxes." In Hypobaric Storage in Food Industry, 85–94. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-419962-0.00010-3.

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Körber, Peter. "Investigation on Building Materials with the SEM in the ESEM mode to Demonstrate Their Capillarity Using the Contact Angle Method." In Electron Microscopy [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104292.

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The chapter describes the use of the Scanning Electron Microscope (SEM) in the Environmental Scanning Electron Microscope (ESEM) mode on building materials, whose capillarity is to be examined. The abbreviation SEM means Scanning Electron Microscope. The abbreviation ESEM means Environmental Scanning Electron Microscope. On the basis of condensation in the ESEM, the hydrophobicity of capillary building materials is demonstrated with the help of the contact angle method. In the chapter, the investigation in the ESEM is shown using capillary building materials that have been given subsequent injections. Due to the problem of rising masonry moisture on capillary masonry in the absence of a cross-section sealing, injection agents, which have a hydrophobic and pore-filling effect, subsequently are used in the borehole method. Such a subsequent masonry sealing must be checked for effectiveness. In addition to already existing macroscopic methods, a new microscopic detection method is presented. This detection method uses ESEM technology in the SEM to generate and detect in situ dew processes at samples taken from the injection level of the examined masonry. The output of the results is done by image or film. By means of the condensation with the medium of water, the contact angle measurement method on the dew drops can be used to make accurate statements about the water-repellent capabilities of the examined sample and thus about the sealing success. There are detectable correlations to the macroscopic detection methods. The contact angles measured in the ESEM during condensation are connected to the conventional macroscopic measurement methods. The method presented in this chapter offers the advantage to have very small samples and to be investigated in a short time with very precise results. The new detection method is suitable for practical use.
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Körber, Peter. "Investigation on Building Materials with the SEM in the ESEM mode to Demonstrate Their Capillarity Using the Contact Angle Method." In Electron Microscopy [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104292.

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The chapter describes the use of the Scanning Electron Microscope (SEM) in the Environmental Scanning Electron Microscope (ESEM) mode on building materials, whose capillarity is to be examined. The abbreviation SEM means Scanning Electron Microscope. The abbreviation ESEM means Environmental Scanning Electron Microscope. On the basis of condensation in the ESEM, the hydrophobicity of capillary building materials is demonstrated with the help of the contact angle method. In the chapter, the investigation in the ESEM is shown using capillary building materials that have been given subsequent injections. Due to the problem of rising masonry moisture on capillary masonry in the absence of a cross-section sealing, injection agents, which have a hydrophobic and pore-filling effect, subsequently are used in the borehole method. Such a subsequent masonry sealing must be checked for effectiveness. In addition to already existing macroscopic methods, a new microscopic detection method is presented. This detection method uses ESEM technology in the SEM to generate and detect in situ dew processes at samples taken from the injection level of the examined masonry. The output of the results is done by image or film. By means of the condensation with the medium of water, the contact angle measurement method on the dew drops can be used to make accurate statements about the water-repellent capabilities of the examined sample and thus about the sealing success. There are detectable correlations to the macroscopic detection methods. The contact angles measured in the ESEM during condensation are connected to the conventional macroscopic measurement methods. The method presented in this chapter offers the advantage to have very small samples and to be investigated in a short time with very precise results. The new detection method is suitable for practical use.
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Conference papers on the topic "Capillary condensation"

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Li, Chen. "Capillary Condensation on Micro-grooved Surfaces." In 42nd AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-162.

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JAKUBOV, TIM S., and DAVID E. MAINWARING. "CAPILLARY CONDENSATION AND THE GENERALIZED KELVIN EQUATION." In Proceedings of the Second Pacific Basin Conference. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812793331_0059.

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Karuppuswami, Saranraj, Nophadon Wiwatcharagoses, Amanpreet Kaur, and Premjeet Chahal. "Capillary Condensation Based Wireless Volatile Molecular Sensor." In 2017 IEEE 67th Electronic Components and Technology Conference (ECTC). IEEE, 2017. http://dx.doi.org/10.1109/ectc.2017.179.

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Barsotti, Elizabeth. "Capillary Condensation in Shale: A Narrative Review." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/199768-stu.

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Tappyrova, Nadejda I., Olga N. Kravtsova, Nadejda A. Protodyakonova, Anatoly M. Timofeev, and Alexandr S. Andreev. "Capillary condensation hysteresis model in porous bodies." In “TOPICAL ISSUES OF THERMOPHYSICS, ENERGETICS AND HYDROGASDYNAMICS IN THE ARCTIC CONDITIONS”: Dedicated to the 85th Birthday Anniversary of Professor E. A. Bondarev. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0106255.

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Avanessian, Tadeh, and Gisuk Hwang. "Adsorption and Capillary Condensation in Nanogap With Nanoposts." In ASME 2017 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/ht2017-4782.

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Abstract:
Adsorption isotherm and adsorption-capillary transition theories have been developed based on homogeneous micro-/nanoporous materials and structures. However, material and structures are often heterogeneous including local surface roughness and defects, where no predictive tool is available so far. In this study, the adsorption isotherm and the adsorption-capillary transition is examined for Ar-filled Pt nanogap (Lz = 5 nm) with nanoposts (one surface only) using Grand Canonical Monte Carlo (GCMC) simulations. Results show that the presence of the nanoposts causes a bimodal capillary transition and reduces the capillary transition pressure compared to the nanogap with both bare surfaces. The pressure difference between the bimodal transitions is pronounced with decreasing the nanopost pitch size. The larger nanopost height also leads to the early capillary transition, but the bimodal transition is pronounced for moderate heights of the nanoposts. A stronger solid-fluid interaction reduces the adsorption-capillary transition pressure at given temperature and increases the transition pressure difference between the nanogaps with or without nanoposts. The obtained results provide new insights of the role of surface nanostructure (nanoposts) into adsorption isotherm and capillary transition.
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Endrenyi, S. "EVAPORATION AND CONDENSATION PHENOMENA OF CAPILLARY-POROUS BODIES." In International Heat Transfer Conference 8. Connecticut: Begellhouse, 1986. http://dx.doi.org/10.1615/ihtc8.1050.

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Ma, Yixin, Jin-Hong Chen, and Ahmad Jamili. "Adsorption and Capillary Condensation in Heterogeneous Nanoporous Shales." In Unconventional Resources Technology Conference. Tulsa, OK, USA: American Association of Petroleum Geologists, 2016. http://dx.doi.org/10.15530/urtec-2016-2432657.

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Yeow, J. T. W., and J. P. M. She. "Capacitive Humidity Sensing using Carbon Nanotube Enabled Capillary Condensation." In 2006 5th IEEE Conference on Sensors. IEEE, 2006. http://dx.doi.org/10.1109/icsens.2007.355500.

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Kim, D. I., J. Grobelny, N. Pradeep, and R. F. Cook. "Quantitative Measurement of Capillary Condensation Effects at Nanoscale Contacts." In STLE/ASME 2006 International Joint Tribology Conference. ASME, 2006. http://dx.doi.org/10.1115/ijtc2006-12289.

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Reports on the topic "Capillary condensation"

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Wang, Evelyn, Yajing Zhao, and Samuel Cruz. Capillary-driven Condensation for Heat Transfer Enhancement in Steam Power Plants. Office of Scientific and Technical Information (OSTI), December 2021. http://dx.doi.org/10.2172/1837751.

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