This paper presents an efficient and compact Matlab code for 2D and 3D topology optimization of multi-materials. We extend a classical 88-line-based educational code to the multi-material problem using the mapping-based interpolation function. with which each material is modeled equally and can obtain a clear 0. 1 result for each material of the optimized structures that can be manufa... https://yeswellneses.shop/product-category/mens-sexual-health/