Biological Thermal Detection in Infrared Imaging Snakes. 1. Ultramicrostructure of Pit Receptor Organs
The receptor organs of snakes with “thermal vision” were studied with ultra-high-resolution scanning probe microscopy (SPM) at close to in vivo conditions to elucidate their surface morphology and materials properties critical for prospective biomimetic design of “soft matter”-based infrared (IR) se...
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| Veröffentlicht in: | Biomacromolecules 2001, Vol.2 (3), p.757-764 |
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| container_title | Biomacromolecules |
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| creator | Fuchigami, N Hazel, J Gorbunov, V. V Stone, M Grace, M Tsukruk, V. V |
| description | The receptor organs of snakes with “thermal vision” were studied with ultra-high-resolution scanning probe microscopy (SPM) at close to in vivo conditions to elucidate their surface morphology and materials properties critical for prospective biomimetic design of “soft matter”-based infrared (IR) sensors. The surfaces of living tissues were scanned under wet ambient conditions in physiological solution, and the resulting parameters were compared with SPM data obtained for chemically treated (formaldehyde-fixed) tissue in ambient air and TEM studies in high vacuum. We found that the microstructural parameters for the living tissue are similar to ones observed for the formaldehyde-fixed snake tissues. However, previous data obtained from TEM analysis in high vacuum underestimated actual dimensions of surface microstructures. The average spacing of the nanopit array observed within receptor surface areas, which was suggested to play a critical role in selective IR adsorption, was determined to be 520 nm. This value is close to the grating spacing required for efficient reflection of electromagnetic radiation characteristic for sunlight without affecting IR adsorbance. |
| doi_str_mv | 10.1021/bm015537z |
| format | Article |
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We found that the microstructural parameters for the living tissue are similar to ones observed for the formaldehyde-fixed snake tissues. However, previous data obtained from TEM analysis in high vacuum underestimated actual dimensions of surface microstructures. The average spacing of the nanopit array observed within receptor surface areas, which was suggested to play a critical role in selective IR adsorption, was determined to be 520 nm. 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V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Biological Thermal Detection in Infrared Imaging Snakes. 1. Ultramicrostructure of Pit Receptor Organs</atitle><jtitle>Biomacromolecules</jtitle><addtitle>Biomacromolecules</addtitle><date>2001</date><risdate>2001</risdate><volume>2</volume><issue>3</issue><spage>757</spage><epage>764</epage><pages>757-764</pages><issn>1525-7797</issn><eissn>1526-4602</eissn><abstract>The receptor organs of snakes with “thermal vision” were studied with ultra-high-resolution scanning probe microscopy (SPM) at close to in vivo conditions to elucidate their surface morphology and materials properties critical for prospective biomimetic design of “soft matter”-based infrared (IR) sensors. The surfaces of living tissues were scanned under wet ambient conditions in physiological solution, and the resulting parameters were compared with SPM data obtained for chemically treated (formaldehyde-fixed) tissue in ambient air and TEM studies in high vacuum. We found that the microstructural parameters for the living tissue are similar to ones observed for the formaldehyde-fixed snake tissues. However, previous data obtained from TEM analysis in high vacuum underestimated actual dimensions of surface microstructures. The average spacing of the nanopit array observed within receptor surface areas, which was suggested to play a critical role in selective IR adsorption, was determined to be 520 nm. This value is close to the grating spacing required for efficient reflection of electromagnetic radiation characteristic for sunlight without affecting IR adsorbance.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>11710029</pmid><doi>10.1021/bm015537z</doi><tpages>8</tpages></addata></record> |
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| subjects | Animals Boidae - anatomy & histology Boidae - physiology Fixatives Formaldehyde Infrared Rays Macromolecular Substances Microscopy, Electron Microscopy, Scanning Probe Sense Organs - physiology Sense Organs - ultrastructure Skin - ultrastructure |
| title | Biological Thermal Detection in Infrared Imaging Snakes. 1. Ultramicrostructure of Pit Receptor Organs |
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