Speaker
Ms
Preeyabol Suwannakrua
(Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand)
Description
We present numerical simulations on a release of spiral waves pinned to an unexcitable circular obstacle in a two-dimensional excitable medium using the Oregonator model. For a given obstacle, a constant electric field with amplitude stronger than a critical value Eunpin causes a pinned spiral wave to drift away from the obstacle. Our results show that the energy applied to unpin the spiral wave can be reduced by using a time varying electric field. For an on-off formed electric field with Eunpin and an appropriate on-off period, the applied energy is decreased to 35% of constant electric field.
Author
Ms
Preeyabol Suwannakrua
(Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand)
Co-authors
Dr
Chaiya Luengviriya
(Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand)
Dr
Jarin Kanchanawarin
(Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand)
Mrs
Malee Sutthiopad
(Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand)
Mr
Nakorn Kumchaiseemak
(Department of Physics, Kasetsart University, 50 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand)
