X-ray Imaging of Various Biodynamic Phenomena in Nature
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이상준 포항공대 Biodynamic phenomena are vital for the conservation of life and indispensable commodity of living organisms. Morphological structures of living organisms and biodynamic behaviors in nature have been evolved through a long history. However, it is nearly impossible for conventional experimental techniques to observe these biodynamic phenomena, especially biofluid flows which are opaque and of biodiversity. To experimentally challenge the basic biophysics of biodynamic phenomena and hidden secrets of nature, I developed an X-ray dynamic imaging technique by combining the merits of both the X-ray radiography and high-speed imaging method. The newly developed X-ray dynamic analysis technique has a great potential in the diagnoses of various dynamic biological flows under in vivo condition. The biodynamic phenomena handled in this talk include blood flows circulating in rats, liquid-feeding phenomena of insects (mosquito and butterfly), and sap flows in xylem vessels of vascular plants (bamboo, maize, Arabidopsis and mangrove). In addition, selective recovery of lithium and salt ions using alginate MOF composites. Moreover, special gold nano-particles and CO2 micro-bubbles were newly developed as tracer particles of flows to measure their instantaneous whole velocity fields. Most of these studies were carried out through interdisciplinary cooperative research works between fluid mechanics, material science, physiology, life science and biomedical research teams. Based on the detailed understanding on these biodynamic phenomena visualized by X-ray imaging techniques, several nature-inspired creative biomimetic technologies were developed for practical applications in biomedical science, microfluidics, sustainable energy and environment to improve the quality of human life. |