For Layerbylayer Assembly

Spin coating, a technique used for casting chemical layers onto a rotating substrate, has been used extensively to prepare thin films for diverse industrial applications such as photolithography [100], light emission [101, 102], nuclear track detection [103], and gas sensing [104, 105]. Since the 1950s, monolayer film formation dynamics by spin-coating has been studied both experimentally and theoretically. Recently, ultra-thin multiplayer films have attracted much interest because of their wide applications as sensors, integrated optics, friction-reducing coatings, biological surfaces, light emitting devices (LEDs), or surface-orientation layers [106-110]. Most of these applications require preparation of stable and well-organized films with fast fabrication. The simplicity, time-efficiency, and cost-effectiveness of spin-coating have made it a practical method for the deposition of polymer thin films. Spin-assembly is a specialized application of spin-coating, in which a polyelectrolyte multilayered thin film is self-assembled onto a spinning substrate. The spin self-assembly method as an alternative for making well-organized multiplayer films in a very short process time has been described [111-113].

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