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The usage of thin films for decorative coatings probably represents their oldest application. This encompasses ca. 100 nm thin gold leaves that were already used in ancient India more than 5000 years ago. It may also be understood as any form of painting, although this kind of work is generally considered as an arts craft rather than an ...
A simple cross-section schematic of the slot-die coating process. Slot-die coating is a coating technique for the application of solution, slurry, hot-melt, or extruded thin films onto typically flat substrates such as glass, metal, paper, fabric, plastic, or metal foils.
The challenge of characterizing thin films involves extracting t, n(λ) and k(λ) of the film from the measurement of R(λ) and/or T(λ). This can be achieved by combining the Forouhi–Bloomer dispersion equations for n ( λ ) and k ( λ ) with the Fresnel equations for the reflection and transmission of light at an interface [ 21 ] to obtain ...
Thin film interference caused by ITO defrosting coating on an Airbus cockpit window. The film thickness is intentionally non-uniform to provide even heating at different distances from the electrodes. A pattern of coloured light formed by interference between white light being reflected from the surface of a thin film of diesel fuel on the ...
Another type is the high-reflector coating, which can be used to produce mirrors that reflect greater than 99.99% of the light that falls on them. More complex optical coatings exhibit high reflection over some range of wavelengths, and anti-reflection over another range, allowing the production of dichroic thin-film filters.
Thin-film effects arise when the thickness of the coating is approximately the same as a quarter or a half a wavelength of light. In this case, the reflections of a steady source of light can be made to add destructively and hence reduce reflections by a separate mechanism. In addition to depending very much on the thickness of the film and the ...
Carbon films are thin film coatings which consist predominantly of the chemical element carbon. They include plasma polymer films , amorphous carbon films ( diamond-like carbon , DLC), CVD diamond films as well as graphite films.
A film coating is a thin polymer-based coat that is typically sprayed onto solid pharmaceutical dosage forms, such as tablets, capsules, pellets or granules.Film coating can impact both its appearance and its pharmacokinetics making it an essential process in making the final drug product.
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