Thẻ: SDG9-Công nghệ – sáng tạo và phát triển hạ tầng

Abstract An efficient and innovative method is presented for the stress-related structural topology optimization (TO) in coupled mechanical-pressure systems by leveraging flexible polygonal meshes. With a polytopal composite finite element approach, the volumetric locking in nearly incompressible materials is reduced. A fluid-flow-based model is built, in which a design-dependent pressure variable is introduced to capture...

Abstract In recent years, the development of low-cost and flexible optoelectronic devices with minimal chemical usage has attracted increasing attention for sustainable development. This study introduces our development of a flexible visible photodetector based on a nanohybrid of copper oxide nanoflakes (2D-CuO) and reduced graphene oxide thin film (rGO), using just five initial materials. Particularly,...

Abstract While biomass burning (BB) significantly affects air quality in Southeast Asia, its contribution to PM2.5 in Ho Chi Minh City (HCMC), Vietnam’s most populous city, remains poorly understood. This study aimed to identify the major BB sources contributing to PM2.5 in urban HCMC, with particular attention to the potential underestimation caused by chemical degradation...

Abstract The dark photon is a well motivated candidate for the dark matter that comprises most of the mass of our visible Universe, leading to worldwide experimental and observational efforts toward its discovery. A primary tool in this search is the cavity haloscope, which facilitates resonantly enhanced conversion to photons from both dark photons and...