MUHAMMAD NURULLAH WALIYULLAH MOHAMED NAZLI; IRNEZA ISMAIL; FATIN HAMIMI MUSTAFA. DESIGN CONCEPT: PORTABLE SPECTROSCOPY USING OPTICAL LIGHT PROPAGATION FOR RAPID LIQUID-BASED SENSING APPLICATION. INTERNATIONAL JOURNAL OF INNOVATION AND INDUSTRIAL REVOLUTION (IJIREV), [S. l.], v. 7, n. 20, 2025. DOI: 10.35631/IJIREV.720006. Disponível em: https://gaexcellence.com/ijirev/article/view/4801. Acesso em: 2 jul. 2025.