Universiti Teknologi Malaysia Institutional Repository

Joule heating effect reduction of an electromagnet system utilizing on-chip magnetic core

Abidin, U. and Yunas, J. and Majlis, B. Y. (2016) Joule heating effect reduction of an electromagnet system utilizing on-chip magnetic core. Jurnal Teknologi, 78 (8-4). pp. 105-112. ISSN 0127-9696

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Abstract

Joule heating effect is substantial in an electromagnet system due to high density current from current-carrying conductor for high magnetic field generation. In Lab-on-chip (LoC) Magnetically Activated Cell Sorting (MACS) device, Joule heating effect generating high temperature and affecting the biological cells viability is investigated. The temperature rise of the integrated system was measured using resistance temperature detector, RTD Pt100. Three temperature rise conditions which are from the bare spiral-shaped magnet wire, the combination of magnet wire and on-chip magnetic core and combination of magnet wire, on-chip magnetic core and 150 µm polydimethylsiloxane (PDMS) layer have been investigated. The combination of electromagnet of spiral-shaped magnet wire coil and on-chip magnetic core has reduced the temperature significantly which are, ~ 38 % and ~ 26 % with magnet wire winding, N = 10 (IDC = 3.0 A, t = 210 s) and N = 20 (IDC = 2.5 A, t = 210 s) respectively. The reduced Joule heating effect is expected due to silicon chip of high thermal conductivity material enable fast heat dissipation to the surrounding. Therefore, the integration of electromagnet system and on-chip magnetic core has the potential to be used as part of LoC MACS system provided the optimum operating conditions are determined.

Item Type:Article
Uncontrolled Keywords:Biological cells, Electromagnet, Joule heating, Lab-on-Chip (LoC), Magnetically Activated Cell Sorting (MACS)
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:74293
Deposited By: Widya Wahid
Deposited On:28 Nov 2017 06:50
Last Modified:28 Nov 2017 06:50

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