HIGH-VOLTAGE SWITCHING SYSTEM DESIGN FOR BIOLOGICAL SAMPLE TRANSPORTATION USING DIGITAL MICROFLUIDICS

• Main Author: Clement Teja, K.
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/66577
• Institution: Institut Teknologi Bandung

Microfluidics has become a very active area of research in both academia and business over the last few decades as a rapidly rising interdisciplinary discipline combining soft matter physics, biochemistry, and microsystems engineering. Microfluidics enables the examination and use of smaller volumes of samples, chemicals, and reagents. Digital microfluidics, a type of microfluidics, takes advantage of the electrowetting-on-dielectric (EWOD) phenomenon to manipulate liquid droplets. To regulate the electrodes, we devised a high-voltage switching mechanism. The high-voltage switching system in this work is made up of 56 NMOS common-source switching circuits that are controlled by an Arduino NANO with seven 8-bit shift registers. Functional tests have been done up to 320 V operating voltage which gives an output of 240 V on the electrodes. The electrode voltage output frequency is 5 Hz.