8-10 June 2016
Asia/Bangkok timezone

Control of Stimulated Wave Trains in the Belousov-Zhabotinsky

Not scheduled
15m
Poster presentation Atomic Physics, Quantum Physics, Molecular and Chemical Physics

Speaker

Ms Srithamma Srithamma (Panatda)

Description

Spiral waves are an origin of the most dangerous cardiac arrhythmia leading to fibrillation and sudden death. It is shown that a high-frequency wave train can induce a drift of free spiral waves until they annihilate at the boundary. Elimination of spiral waves by using wave train is also demonstrated in the Belousov-Zhabotinsky (BZ) reaction but lack of the control of the wave period. We present a method to generate and control a train of excitation waves in the BZ reaction. A droplet of 2.5M sulfuric acid (10µl) was used as the wave source while the wave period can be controlled by setting the local temperature at the source location. When the local temperature is increased from 22 to 37oC, the wave period decreases from 4.9 to 2.75 minutes when the bulk temperature is 22oC.

Primary author

Co-authors

Dr Chaiya Luengviriya (Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand.) Dr Jiraporn Luengviriya (Lasers and Optics Research Group, King Mongkut’s University of Technology North Bangkok, 1518 Pibulsongkram Road, Bangkok 10800, Thailand.) Mr Nakorn Kumchaiseemak (Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand.) Mr Piyachat Wungmool (Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand.)

Presentation materials

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