Mokhtar NR, Mustafa MKM. The Investigation of QCM-Based VOCS Gas Sensor Sensitivity Using Impedance Analysis. EKST [Internet]. 2025 Dec. 17 [cited 2026 Apr. 8];5(2):293-9. Available from: https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/18621