Prof. Ir. Ts. Dr. Sheikh Ahmad Zaki Sheikh Salim leads the Tropical Indoor Environmental Research (TIER) group. His research focuses on indoor environmental quality, thermal comfort, building performance, and energy-efficient cooling strategies in tropical climates. He has published 186 Scopus-indexed documents and has a Scopus h-index of 31 (2026). He was recognised as a Top Research Scientist Malaysia (TRSM) in 2023 and is listed among the World’s Top 2% Scientists for Single-Year Impact (2024–2026).