DOI: 10.1063/1.2199874. Evaporation induced self assembly and rheology change during sol-gel coating

Evaporation induced self assembly and rheology change during sol-gel coating

10.1063/1.2199874

Crossref journal-article

AIP Publishing

Physics of Fluids (317)

Abstract

Thin films with self-assembled nanostructures are important in applications such as catalysis and biosensor technology. A major technique used to prepare such films is sol-gel processing. This technique involves depositing a complex fluid on a substrate by dip, spin, or spray coating, followed by allowing the film to evaporate and form self-assembled nanostructures. Since the composition of the film during coating is central to understanding how changing chemical and physical conditions affect the properties and microstructures of the films, we investigate the rheological properties of the entrained fluid film and its subsequent impact on the steady state film thickness during the evaporation-induced self-assembly process. We perform systematic experiments to measure the meniscus shape and film thickness during sol-gel dip coating. We observe that the experimental data of film thickness lie way below the Landau-Levich-Derjaguin prediction from the classic film-coating results. To explain this discrepancy, we present a thin film model based on the lubrication approximation with an evaporation effect. Our results show that evaporation-induced self-assembly leads to rheological variations in the entrained film and, consequently, alters the film thickness. The predicted film thickness based on the evaporation-induced rheology variation model compares well with the experiments.

Bibliography

Lee, C. H., Lu, Y., & Shen, A. Q. (2006). Evaporation induced self assembly and rheology change during sol-gel coating. Physics of Fluids, 18(5).

Authors 3

Chang H. Lee (first)
Yunfeng Lu (additional)
Amy Q. Shen (additional)

References 36 Referenced 28

{'key': '2023080100370239900_c1', 'first-page': '424', 'article-title': 'Review of sol-gel thin film formation', 'volume': '147–148', 'year': '1992', 'journal-title': 'J. Non-Cryst. Solids'} / J. Non-Cryst. Solids / Review of sol-gel thin film formation (1992)
10.1038/38699 / Nature / Continuous formation of supported cubic and hexagonal mesoporous films by sol-gel dip-coating (1997)
10.1016/S1359-0294(98)80012-5 / Curr. Opin. Colloid Interface Sci. / Mesochemistry (1998)
10.1002/(SICI)1521-4095(199811)10:16<1380::AID-ADMA1380>3.3.CO;2-# / Adv. Mater. (Weinheim, Ger.) / Continuous mesoporous silica films with highly ordered large pore structures (1998)
10.1021/la9906774 / Langmuir / Microemulsion templates for mesoporous silica (2000)
10.1021/ja004310t / J. Am. Chem. Soc. / Molecularly ordered inorganic frameworks in layered silicate surfactant mesophases (2001)
{'key': '2023080100370239900_c7', 'first-page': '12095', 'article-title': 'Patterned hexagonal arrays of living cells in sol-gel silica films', 'volume': '122', 'year': '2000', 'journal-title': 'J. Am. Chem. Soc.'} / J. Am. Chem. Soc. / Patterned hexagonal arrays of living cells in sol-gel silica films (2000)
10.1111/j.1151-2916.1995.tb08863.x / J. Am. Ceram. Soc. / In situ fluorescence probing of the chemical changes furing sol-gel thin film formation (1995)
10.1021/ja993882e / J. Am. Chem. Soc. / In situ Luminescence probing of the chemical and structural changes during formation of dip-coated lamellar phase sodium dodecyl sulfate sol-gel thin films (2000)
10.1021/cm011255u / Chem. Mater. / An in situ study of mesostructured CTAB-silica film formation during dip coating using time-resolved SAXS and interferometry measurements (2002)
10.1021/jp027214i / J. Phys. Chem. B / In-situ x-ray scattering study of continuous silica-surfactant self-assembly during steady-state dip coating (2003)
{'key': '2023080100370239900_c12', 'first-page': '1154', 'article-title': 'Dip-coated films of volatile liquids', 'volume': '14', 'year': '2002', 'journal-title': 'J. Appl. Phys.'} / J. Appl. Phys. / Dip-coated films of volatile liquids (2002)
10.1006/jcis.1993.1194 / J. Colloid Interface Sci. / Use of the augmented Young-Laplace equation to model equilibrium and evaporating extended menisci (1993)
10.1021/la00025a056 / Langmuir / Spreading of a liquid film with a finite contact angle by the evaporation/condensation process (1993)
10.1016/0021-9797(80)90138-1 / J. Colloid Interface Sci. / Evaporating menisci of wetting fluids (1980)
10.1063/1.1843871 / Phys. Fluids / The atomic detail of an evaporating meniscus (2005)
10.1007/s100350000060 / Granular Matter / The physics of evaporation-induced assembly of sol-gel (2001)
10.1073/pnas.97.3.984 / Proc. Natl. Acad. Sci. U.S.A. / Using lateral capillary forces to compute by self-assembly (2000)
10.1021/ma000132c / Macromolecules / Dynamic Monte Carlo simulation of gelation with extensive cyclization (2000)
10.1021/la981584+ / Langmuir / Stress isotherms of porous thin materials: Theoretical predictions from a nonlocal density functional theory (1999)
10.1038/38699 / Nature / Continuous formation of supported cubic and hexagonal mesoporous films by sol-gel dip-coating (1997)
10.1063/1.1446241 / J. Appl. Phys. / Hydrogenated amorphous and microcrystalline GaAs films prepared by radio-frequency magnetron sputtering (2002)
{'volume-title': 'Liquid Film Coating—Scientific Principles and Their Technological Implications', 'year': '1997', 'key': '2023080100370239900_c23'} / Liquid Film Coating—Scientific Principles and Their Technological Implications (1997)
10.1017/S0022112090001306 / J. Fluid Mech. / Marangoni effects of trace impurities on the motion of long gas bubbles in capillaries (1990)
10.1146/annurev.fluid.17.1.65 / Annu. Rev. Fluid Mech. / Coating flows (1985)
10.1016/0009-2509(60)87003-0 / Chem. Eng. Sci. / Dynamics of a fluid interface (1960)
{'volume-title': 'Physicochemical Hydrodynamics', 'year': '1962', 'key': '2023080100370239900_c27'} / Physicochemical Hydrodynamics (1962)
{'key': '2023080100370239900_c28', 'first-page': '42', 'article-title': 'Dragging of a liquid by a moving plate', 'volume': '17', 'year': '1942', 'journal-title': 'Acta Physicochim. URSS'} / Acta Physicochim. URSS / Dragging of a liquid by a moving plate (1942)
{'key': '2023080100370239900_c29', 'first-page': '349', 'article-title': 'On the thickness of the liquid film adhering to the walls of a vessel after emptying', 'volume': '20', 'year': '1943', 'journal-title': 'Acta Physicochim. URSS'} / Acta Physicochim. URSS / On the thickness of the liquid film adhering to the walls of a vessel after emptying (1943)
10.1017/S0022112061000160 / J. Fluid Mech. / The motion of long bubbles in tubes (1961)
10.1002/aic.690120531 / AIChE J. / A withdrawal theory for Ellis model fluids (1966)
10.1146/annurev.fluid.19.1.403 / Annu. Rev. Fluid Mech. / Thermocapillary instabilities (1987)
10.1016/S0021-9797(03)00640-4 / J. Colloid Interface Sci. / Surface patterning via evaporation of ultrathin films containing nanoparticles (2003)
10.1063/1.869555 / Phys. Fluids / The stability of evaporating thin liquid films in the presence of surfactant. I. Lubrication approximation and linear analysis (1998)
10.1063/1.1317238 / J. Appl. Phys. / Selective dip-coating of chemically micropatterned surfaces (2000)
10.1006/jcis.2002.8631 / J. Colloid Interface Sci. / Dynamic response of geometrically constrained vapor bubbles (2002)

Dates

Type	When
Created	19 years ago (Aug. 7, 2006, 6:09 p.m.)
Deposited	2 years, 1 month ago (July 31, 2023, 8:37 p.m.)
Indexed	1 month ago (July 30, 2025, 6:47 a.m.)
Issued	19 years, 4 months ago (May 1, 2006)
Published	19 years, 4 months ago (May 1, 2006)
Published Online	19 years, 3 months ago (May 18, 2006)
Published Print	19 years, 4 months ago (May 1, 2006)

Funders 0

None

BibTeX

@article{Lee_2006, title={Evaporation induced self assembly and rheology change during sol-gel coating}, volume={18}, ISSN={1089-7666}, url={http://dx.doi.org/10.1063/1.2199874}, DOI={10.1063/1.2199874}, number={5}, journal={Physics of Fluids}, publisher={AIP Publishing}, author={Lee, Chang H. and Lu, Yunfeng and Shen, Amy Q.}, year={2006}, month=may }

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