Spin casting of dilute solutions: Vertical composition profile during hydrodynamic-evaporative film thinning

Karpitschka, Stefan; Weber, Constans M.; Riegler, Hans

doi:10.1016/j.ces.2015.01.028

Cited by 27 publications

(58 citation statements)

References 28 publications

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“…A spin‐coating (spin‐casting) device is a versatile and easy‐to‐use setup to create thin and homogeneous films on planar supports . In our case, a donor slide consists of a glass slide, covered with polyimide tape, which is spin‐coated with a polymer matrix material, embedding the building blocks.…”

Section: Resultsmentioning

confidence: 99%

A Low‐Cost Laser‐Based Nano‐3D Polymer Printer for Rapid Surface Patterning and Chemical Synthesis of Peptide and Glycan Microarrays

Eickelmann

Tsouka

Heidepriem

et al. 2019

Adv Materials Technologies

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A low‐cost laser‐based printing setup is presented, which allows for the spot‐wise patterning of surfaces with defined polymer nanolayers. These nanolayer spots serve as a “solid solvent,” embedding different chemicals, chemical building blocks, materials, or precursors and can be stacked on top of each other. By melting the spot pattern, the polymer‐embedded molecules are released for chemical reaction. This enables researchers to quickly pattern a surface with different molecules and materials, mixing them directly on the surface for high‐throughput chemical synthesis to generate and screen diverse microarray libraries. In contrast to expensive ink‐jet or contact printing, this approach does not require premixing of inks, which enables in situ combinatorial mixing. Easy access and versatility of this patterning approach are shown by generating microarrays of various biomolecules, such as glycans for the first time, to screen interactions of antibodies and lectins. In addition, a layer‐by‐layer solid‐phase synthesis of peptides directly on the microarray is presented. Amino acid–containing nanolayers are repeatedly laser‐transferred and reacted with the functionalized acceptor surface in defined patterns. This simple system enables a reproducible array production, down to spot‐to‐spot distances of 100 µm, and offers a flexible and cheap alternative to expensive spotting robot technology.

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Section: Resultsmentioning

confidence: 99%

A Low‐Cost Laser‐Based Nano‐3D Polymer Printer for Rapid Surface Patterning and Chemical Synthesis of Peptide and Glycan Microarrays

Eickelmann

Tsouka

Heidepriem

et al. 2019

Adv Materials Technologies

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“…Film formation by spin casting.-Liquid films were formed on the planar silicon substrates by evaporative spin casting, a well-characterized method to form thin planar films from volatile liquids. 43 With this method also permanent planar films or permanent coverages of NPs can be prepared in a well-controlled way by deposition of liquid mixtures of volatile and nonvolatile components. 44 Reflection optical microscopy setup.- Figure 1 shows the experimental setup to optically de-termine on-line and locally (within lateral optical resolution) the (time-dependent) thickness of the liquid film during the spin cast process.…”

Section: Methodsmentioning

confidence: 99%

Meniscus Shape around Nanoparticles Embedded in Molecularly Thin Liquid Films

et al. 2018

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Individual nanoparticles embedded in molecularly thin films at planar substrates and the resulting film surface distortion (meniscus) adjacent to the nanoparticles are investigated by conventional optical reflection microscopy. Even for nanoparticles much smaller than the Rayleigh diffraction limit, the meniscus creates such a pronounced optical footprint that the location of the nanoparticles can be identified. This is because the decay length (lateral extension) of the meniscus exceeds the size of the nanoparticle by orders of magnitude. Therefore, for the first time, the exact shape of the meniscus of the liquid adjacent to a nanosize object could be measured and analyzed. The meniscus has a zero curvature shape (cosine hyperbolic). The liquid in the meniscus is in pressure equilibrium with the far-field planar film. The decay length decreases with the decreasing nanoparticle size. However, it is independent of the far-field film thickness. Supposedly, the decay length is determined by van der Waals interactions although it is unknown what determines its (unexpectedly large) absolute value. The presented technical approach may be used to investigate biological systems (for instance, surface distortions in supported membranes caused by proteins or protein aggregates).

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“…The drop volume was substantially more than the volume of a planar film on the substrates at the "transition" height of the solution. The transition height is the film thickness where evaporation starts to dominate the film thinning [23]. Therefore most of the originally deposited solution is spun off in the course of the formation of a planar film due to spin cast hydrodynamics.…”

Section: Spin Castingmentioning

confidence: 99%

“…A c c e p t e d M a n u s c r i p t 5 quantitatively quite well [23]. Spin casting was performed under ambient conditions (under a hood as the TFA is a corrosive solvent) with SCI and SCE spincoaters (Novocontrol Technologies GmbH, Germany).…”

Section: Page 5 Of 22mentioning

confidence: 99%

See 1 more Smart Citation

Nucleation and growth of copper phthalocyanine aggregates deposited from solution on planar surfaces

Ghani

Gojżewski

Riegler

2015

Applied Surface Science

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Spin casting of dilute solutions: Vertical composition profile during hydrodynamic-evaporative film thinning

Cited by 27 publications

References 28 publications

A Low‐Cost Laser‐Based Nano‐3D Polymer Printer for Rapid Surface Patterning and Chemical Synthesis of Peptide and Glycan Microarrays

A Low‐Cost Laser‐Based Nano‐3D Polymer Printer for Rapid Surface Patterning and Chemical Synthesis of Peptide and Glycan Microarrays

Meniscus Shape around Nanoparticles Embedded in Molecularly Thin Liquid Films

Nucleation and growth of copper phthalocyanine aggregates deposited from solution on planar surfaces

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