Electromagnetic response of the protective pellicle of Euglenoids: Influence of the surface profile
In a recent paper we have investigated, from an electromagnetic point of view, the role played by the pellicle of Euglenoids -unicellular aquatic organisms- in the protection of the cell against UV radiation.14 By modelling the pellicle as a diffraction grating, we computed the electromagnetic respo...
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2015
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v9429_nJanuary_p_Inchaussandague http://hdl.handle.net/20.500.12110/paper_0277786X_v9429_nJanuary_p_Inchaussandague |
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paper:paper_0277786X_v9429_nJanuary_p_Inchaussandague2023-06-08T15:26:37Z Electromagnetic response of the protective pellicle of Euglenoids: Influence of the surface profile Inchaussandague, Marina Elizabeth Gigli, Miriam Laura Skigin, Diana Carina Conforti, Visitación Teresa Dora Microalgae Natural photonic crystals UV protection Algae Aquatic organisms Biomimetics Diffraction Protozoa Radiation protection Reflection Ultraviolet radiation Arbitrary profile Diffraction problem Electromagnetic response Micro-algae Natural photonic crystals Sinusoidal grating Surface profiles UV protection Diffraction gratings In a recent paper we have investigated, from an electromagnetic point of view, the role played by the pellicle of Euglenoids -unicellular aquatic organisms- in the protection of the cell against UV radiation.14 By modelling the pellicle as a diffraction grating, we computed the electromagnetic response of different species that exhibit different behaviors against UV radiation. In this previous study, the pellicle profile was approximated by a sinusoidal grating. However, it has been observed in the transversal cut images that the profiles are not exactly sinusoidal, and also vary from sample to sample. Since the electromagnetic response depends on the geometry of the grating, reflectance calculations that take into account a more accurate representation of the actual profile could provide more insight into this problem. In this paper we investigate the electromagnetic response of the pellicle of Euglenoids for different grating profiles. The diffraction problem is solved by using the Chandezon method, which has demonstrated a successful performance for deep gratings of arbitrary profiles. We analyze the influence of the shape, depth and period of the grating on the UV reflectance. We show that the pellicle characteristics are critical parameters to increase the reflectance, thus reducing the penetration of the UV radiation within the cell and therefore, minimizing the damage and increasing the survival of these organisms. © 2015 SPIE. Fil:Inchaussandague, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gigli, M.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Skigin, D.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Conforti, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v9429_nJanuary_p_Inchaussandague http://hdl.handle.net/20.500.12110/paper_0277786X_v9429_nJanuary_p_Inchaussandague |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Microalgae Natural photonic crystals UV protection Algae Aquatic organisms Biomimetics Diffraction Protozoa Radiation protection Reflection Ultraviolet radiation Arbitrary profile Diffraction problem Electromagnetic response Micro-algae Natural photonic crystals Sinusoidal grating Surface profiles UV protection Diffraction gratings |
| spellingShingle |
Microalgae Natural photonic crystals UV protection Algae Aquatic organisms Biomimetics Diffraction Protozoa Radiation protection Reflection Ultraviolet radiation Arbitrary profile Diffraction problem Electromagnetic response Micro-algae Natural photonic crystals Sinusoidal grating Surface profiles UV protection Diffraction gratings Inchaussandague, Marina Elizabeth Gigli, Miriam Laura Skigin, Diana Carina Conforti, Visitación Teresa Dora Electromagnetic response of the protective pellicle of Euglenoids: Influence of the surface profile |
| topic_facet |
Microalgae Natural photonic crystals UV protection Algae Aquatic organisms Biomimetics Diffraction Protozoa Radiation protection Reflection Ultraviolet radiation Arbitrary profile Diffraction problem Electromagnetic response Micro-algae Natural photonic crystals Sinusoidal grating Surface profiles UV protection Diffraction gratings |
| description |
In a recent paper we have investigated, from an electromagnetic point of view, the role played by the pellicle of Euglenoids -unicellular aquatic organisms- in the protection of the cell against UV radiation.14 By modelling the pellicle as a diffraction grating, we computed the electromagnetic response of different species that exhibit different behaviors against UV radiation. In this previous study, the pellicle profile was approximated by a sinusoidal grating. However, it has been observed in the transversal cut images that the profiles are not exactly sinusoidal, and also vary from sample to sample. Since the electromagnetic response depends on the geometry of the grating, reflectance calculations that take into account a more accurate representation of the actual profile could provide more insight into this problem. In this paper we investigate the electromagnetic response of the pellicle of Euglenoids for different grating profiles. The diffraction problem is solved by using the Chandezon method, which has demonstrated a successful performance for deep gratings of arbitrary profiles. We analyze the influence of the shape, depth and period of the grating on the UV reflectance. We show that the pellicle characteristics are critical parameters to increase the reflectance, thus reducing the penetration of the UV radiation within the cell and therefore, minimizing the damage and increasing the survival of these organisms. © 2015 SPIE. |
| author |
Inchaussandague, Marina Elizabeth Gigli, Miriam Laura Skigin, Diana Carina Conforti, Visitación Teresa Dora |
| author_facet |
Inchaussandague, Marina Elizabeth Gigli, Miriam Laura Skigin, Diana Carina Conforti, Visitación Teresa Dora |
| author_sort |
Inchaussandague, Marina Elizabeth |
| title |
Electromagnetic response of the protective pellicle of Euglenoids: Influence of the surface profile |
| title_short |
Electromagnetic response of the protective pellicle of Euglenoids: Influence of the surface profile |
| title_full |
Electromagnetic response of the protective pellicle of Euglenoids: Influence of the surface profile |
| title_fullStr |
Electromagnetic response of the protective pellicle of Euglenoids: Influence of the surface profile |
| title_full_unstemmed |
Electromagnetic response of the protective pellicle of Euglenoids: Influence of the surface profile |
| title_sort |
electromagnetic response of the protective pellicle of euglenoids: influence of the surface profile |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v9429_nJanuary_p_Inchaussandague http://hdl.handle.net/20.500.12110/paper_0277786X_v9429_nJanuary_p_Inchaussandague |
| work_keys_str_mv |
AT inchaussandaguemarinaelizabeth electromagneticresponseoftheprotectivepellicleofeuglenoidsinfluenceofthesurfaceprofile AT giglimiriamlaura electromagneticresponseoftheprotectivepellicleofeuglenoidsinfluenceofthesurfaceprofile AT skigindianacarina electromagneticresponseoftheprotectivepellicleofeuglenoidsinfluenceofthesurfaceprofile AT confortivisitacionteresadora electromagneticresponseoftheprotectivepellicleofeuglenoidsinfluenceofthesurfaceprofile |
| _version_ |
1768544685210468352 |