Spin Coating

Larson, Ronald G.; Rehg, Timothy J.

doi:10.1007/978-94-011-5342-3_20

Cited by 50 publications

(37 citation statements)

References 49 publications

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“…Spin coating is a well-established technology which in the past has been used in the manufacture of photoresists and oxide coatings for screens (Emslie et al, 1958;Hall et al, 1998). There is a substantial scientific literature on the spin-coating process and useful reviews on the subject are given by Scriven (1988) and Larson and Rehg (1997). Of particular relevance to this paper is the work of Emslie et al (1958) who established how a Newtonian fluid thins under the action of a centrifugal rotation on a flat disc.…”

Section: Introductionmentioning

confidence: 97%

Spin and dip coating of light-emitting polymer solutions: Matching experiment with modelling

Yimsiri

Mackley

2006

Chemical Engineering Science

146

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Section: Introductionmentioning

confidence: 97%

Spin and dip coating of light-emitting polymer solutions: Matching experiment with modelling

Yimsiri

Mackley

2006

Chemical Engineering Science

146

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“…In such techniques, a substrate is coated with a layer of liquid containing suspended or solvated particles, and the carrier fluid is evaporated leaving behind a solid residue. Both dip and spin coating are well-established industrial techniques for doing this, generating uniform films with thicknesses varying from nanometers to microns [29]. The difference between these two processes is that in spin coating the substrate is rotated quickly as the liquid with suspended/solvated particles is placed onto the substrate.…”

Section: Introductionmentioning

confidence: 99%

Physiochemical Characterization of Iodine (V) Oxide Part II: Morphology and Crystal Structure of Particulate Films

2015

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Abstract:In this study, the production of particulate films of iodine (V) oxides is investigated. The influence that sonication and solvation of suspended particles in various alcohol/ketone/ester solvents have on the physical structure of spin or drop cast films is examined in detail with electron microscopy, powder x-ray diffraction, and UV-visible absorption spectroscopy. Results indicate that sonicating iodine oxides in alcohol mixtures containing trace amounts of water decreases deposited particle sizes and produces a more uniform film morphology. UV-visible spectra of the pre-cast suspensions reveal that for some solvents, the iodine oxide oxidizes the solvent, producing I2 and lowering the pH of the suspension. Characterizing the crystals within the cast films reveal their composition to be primarily HI3O8, their orientations to exhibit a preferential orientation, and their growth to be primarily along the ac-plane of the crystal, enhanced at higher spin rates. Spin-coating at lower spin rates produces laminate-like particulate films versus higher density, one-piece films of stacked particles produced by drop casting. The particle morphology in these films consists of a combination of rods, plates, cubes, and rhombohedra structure.

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“…The evolution of partially wetting thin liquid films on solid substrates and the subsequent pattern formation are a subject of growing importance. This type of flow is of widespread relevance in a variety of technological applications, ranging from various types of coatings [1][2][3] to new applications in micro-and nanofluidics. 4,5 These films are often unstable and could break up, leading to the formation of dry spots that are often undesirable.…”

Section: Introductionmentioning

confidence: 99%

On the breakup of fluid films of finite and infinite extent

2007

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We study the dewetting process of thin fluid films that partially wet a solid surface. Using a long-wave ͑lubrication͒ approximation, we formulate a nonlinear partial differential equation governing the evolution of the film thickness, h. This equation includes the effects of capillarity, gravity, and an additional conjoining/disjoining pressure term to account for intermolecular forces. We perform standard linear stability analysis of an infinite flat film, and identify the corresponding stable, unstable, and metastable regions. Within this framework, we analyze the evolution of a semi-infinite film of length L in one direction. The numerical simulations show that for long and thin films, the dewetting fronts of the film generate a pearling process involving successive formation of ridges at the film ends and consecutive pinch-off behind these ridges. On the other hand, for shorter and thicker films, the evolution ends up by forming a single drop. The time evolution as well as the final drops pattern show a competition between the dewetting mechanisms caused by nucleation and by free surface instability. We find that precise computations, requiring quadrupole precision of computer arithmetic, are often needed to avoid spurious results.

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Spin Coating

Cited by 50 publications

References 49 publications

Spin and dip coating of light-emitting polymer solutions: Matching experiment with modelling

Spin and dip coating of light-emitting polymer solutions: Matching experiment with modelling

Physiochemical Characterization of Iodine (V) Oxide Part II: Morphology and Crystal Structure of Particulate Films

On the breakup of fluid films of finite and infinite extent

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