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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47225

Title: Firefly Light Flashing: Oxygen Supply Mechanism
Authors: Y. Hwu
Yueh-Lin Tsai
Chia-Wei Li
Tzay-Ming Hong
Jen-Zon Ho
En-Cheng Yang
Wen-Yen Wu
G. Margaritondo
Su-Ting Hsu
Edwin B. L. Ong
Contributors: 國立臺灣海洋大學:光電科學研究所
Date: 2014-12
Issue Date: 2018-07-05T07:24:44Z
Publisher: PHYSICAL REVIEW LETTERS
Abstract: Abstract: Firefly luminescence is an intriguing phenomenon with potential technological applications, whose biochemistry background was only recently established. The physics side of this phenomenon, however, was still unclear, specifically as far as the oxygen supply mechanism for light flashing is concerned. This uncertainty is due to the complex microscopic structure of the tracheal system: without fully knowing its geometry, one cannot reliably test the proposed mechanisms. We solved this problem using synchrotron phase contrast microtomography and transmission x-ray microscopy, finding that the oxygen consumption corresponding to mitochondria functions exceeds the maximum rate of oxygen diffusion from the tracheal system to the photocytes. Furthermore, the flashing mechanism uses a large portion of this maximum rate. Thus, the flashing control requires passivation of the mitochondria functions, e.g., by nitric oxide, and switching of the oxygen supply from them to photoluminescence.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/47225
Appears in Collections:[光電科學研究所] 期刊論文

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