کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1250515 1495998 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectroscopic characterization of dragonfly wings common in Japan
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Spectroscopic characterization of dragonfly wings common in Japan
چکیده انگلیسی

A series of Fourier Transform infrared (FT-IR) absorption, X-ray diffraction (XRD), and Brillouin light scattering (BLS) studies on the wings of six species of dragonfly common in Japan, including the largest Anotogaster sieboldii and much smaller Lestes temporalis, was performed at room temperature. XRD and FT-IR results indicate that dragonfly wing is comprised of a randomly oriented microcrystalline or an amorphous-like α-chitin. We observed a pair of longitudinal acoustic (LA) phonon peaks and a broad quasi-elastic scattering peak in backscattering BLS spectra. LA phonon frequencies and full widths at half maximum were found to be 19.5 ± 0.4 GHz and 1.0 ± 0.2 GHz for the 488 nm excitation and independent of their sizes and species.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vibrational Spectroscopy - Volume 61, July 2012, Pages 85–93
نویسندگان
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