Structurally Controlled Cellular Architectures for High-Performance Ultra-Lightweight Materials
- Structurally Controlled Cellular Architectures for High-Performance Ultra-Lightweight Materials
- 여선주; 오민준; 유필진
- Ashby plots; closed-cellular structures; lightweight materials; mechanical properties; open-cellular structures
- Issue Date
- Advanced materials
- VOL 31, NO 34-1803670-26
- The design and synthesis of cellular structured materials are of both scientific and technological importance since they can impart remarkably improved material properties such as low density, high mechanical strength, and adjustable surface functionality compared to their bulk counterparts. Although reducing the density of porous structures would generally result in reductions in mechanical properties, this challenge can be addressed by introducing a structural hierarchy and using mechanically reinforced constituent materials. Thus, precise control over several design factors in structuring, including the type of constituent, symmetry of architectures, and dimension of the unit cells, is extremely important for maximizing the targeted performance. The feasibility of lightweight materials for advanced applications is broadly explored due to recent advances in synthetic approaches for different types of cellular architectures. Here, an overview of the development of lightweight cellular materials according to the structural interconnectivity and randomness of the internal pores is provided. Starting from a fundamental study on how material density is associated with mechanical performance, the resulting structural and mechanical properties of cellular materials are investigated for potential applications such as energy/mass absorption and electrical and thermal management. Finally, current challenges and perspectives on high‐ performance ultra‐ lightweight materials potentially implementable by well‐ controlled cellular architectures are discussed.
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