کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1783908 1524108 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Terahertz time domain spectroscopy of hydrothermally synthesized boehmite and ammonium dawsonite nanostructures
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک اتمی و مولکولی و اپتیک
پیش نمایش صفحه اول مقاله
Terahertz time domain spectroscopy of hydrothermally synthesized boehmite and ammonium dawsonite nanostructures
چکیده انگلیسی


• Boehmite and ammonium dawsonite nanostructures were hydrothermally synthesized.
• Effect of different phases on development of morphology is studied.
• Optical and dielectric properties were investigated in THz frequency range.

The frequency dependent optical and dielectric properties of boehmite (AlOOH) and ammonium aluminum carbonate hydroxide (AACH) nanostructures, prepared at different temperatures via hydrothermal synthesis, were studied by using terahertz time domain spectroscopy (THz-TDS). The complex refractive indices, absorption coefficients and complex dielectric constants were determined and compared for different synthesis temperatures. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) were also performed to confirm the formation of boehmite and AACH. Scanning electron microscopy (SEM) was performed to study the morphology of nanostructures. The study reveals the formation of AACH at higher temperatures and decrease in refractive index with increasing synthesis temperature. The higher absorption coefficient and lower refractive index and dielectric constant were observed for AACH than for boehmite.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Infrared Physics & Technology - Volume 78, September 2016, Pages 200–208
نویسندگان
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