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Ambient coating technologies have gained momentum as sustainable, efficient, and non-invasive surface engineering solutions. Operating under mild conditions, they are ideal for heat-sensitive substrates and have transformed industries such as pharmaceuticals, biomedical devices, and electronics. Recent advancements include novel methods like supercritical fluid-assisted coating, electrostatic deposition, and electro-spray ultra-thin film application, enabling uniform and targeted deposition on complex geometries and delicate surfaces. Ambient coatings support the development of enteric-coated dosage forms, colon-targeted systems, and orally disintegrating films in pharmaceuticals and enhance durability in electronics and optics. The integration of 3D printing with ambient coating processes enables the fabrication of multilayered, functional structures. Ambient coating technologies address critical limitations of traditional coating processes, including environmental impact and material waste. Future prospects include integrating machine learning, digital twin modeling, and automated quality control systems to optimize performance and reproducibility. Research is expected to focus on biopolymer-based ambient coatings, self-healing films, and multifunctional nanocomposites. The synergy between green chemistry and ambient technologies could lead to zero-waste coating systems and biodegradable functional films, enabling next-generation materials and devices with unprecedented control over performance, structure, and environmental compatibility.
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