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Functional surfaces with attractive properties, such as superhydrophobicity and omniphobicity often rely on the synergy between intrinsic material properties and dual scale micro- and nano-hierarchical structures for achieving desired wettability. Historically, engineered liquid repellent surfaces have attracted a great deal of interest from academia and industry due to their broad application prospects. Hence, for several years, there have been significant scientific efforts by researchers exploring state of the art manufacturing technologies that are efficient and yet cost effective to produce functional liquid repellent surfaces at an industrial scale. This technical review summarizes the various advanced and state of the art polymer processing technologies employed to fabricate the micro- and nanostructured polymer surfaces, with a special focus given to superhydrophobic and omniphobic applications. Here, we discuss the merits and limitations of each fabrication methods available for micro- and nanostructuring of polymer-based surfaces. In addition, an attempt has been made to provide insight into the relationship between geometry of micro/nanostructures (size and shape) and intrinsic wettability on liquid repellency. A special section has been devoted to feature and document all commercialization efforts, including various commercially available products that were developed in the past decade. Finally, outlook and the development trend in the polymer micro- and nanostructured surfaces are highlighted to lead future research. KEYWORDS advanced polymer processing technologies, nanostructured surfaces, superhydrophobicity, orcid.org/00000001-8315-4395 orcid.org/0000-00016785-2150 orcid.org/0000-0002-2735-3426 1 | INTRODUCTION Micro- and nanostructuring of material surfaces can provide an extensive application prospect. The fundamental investigation of the leaves of Nelumbo nucifera (lotus) and Colocasia [...]

Conventional charge storage devices made of ceramic materials have limited deformability and configurability due to their extreme stiffness. The high demand for compliant dielectrics has led researchers to look beyond conventional ceramics, despite their very high dielectric properties. In this work, a mechanically robust, highly‐flexible and ultra‐stretchable thermoplastic elastomeric material with dielectric characteristics has been fabricated by introducing calcium copper titanate [CaCu3Ti4O12] (CCTO) dielectric material onto macromolecular chains of styrene–isoprene–styrene (SIS) triblock copolymer via a solution‐based polymer processing technique. CCTO powders have been synthesized using sol–gel technique. The resulting composite is ultra‐stretchable with strain at break of ~3200% and has high dielectric permittivity of ~10. High dielectric property is attributed to the well‐dispersed dielectric CCTO fillers within the SIS matrix, which provide sites for interfacial polarization and space charge accumulation. The influence of CCTO on dielectric properties has also been validated using the modified Cole–Cole model. [ABSTRACT FROM AUTHOR]