کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7846076 | 1508605 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Far-infrared elastic scattering proposal for the Avogadro Project's silicon spheres
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کلمات کلیدی
Lorenz–Mie theoryAvogadro constantSilicon sphereMorphology-dependent resonancesOptical interferometry - تداخل سنجی نوریWhispering gallery modes - حالت های خیره کننده گالریterahertz spectroscopy - طیف سنجی terahertzFar-infrared spectroscopy - طیف سنجی دور مادون قرمزNear-infrared spectroscopy - طیف شناسی فروسرخ نزدیکElastic scattering - پراکندگی الاستیک
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
طیف سنجی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Far-infrared elastic scattering proposal for the Avogadro Project's silicon spheres Far-infrared elastic scattering proposal for the Avogadro Project's silicon spheres](/preview/png/7846076.png)
چکیده انگلیسی
Avogadro constant determines the number of particles in one mole of a substance, thus relating the molar mass of the substance to the mass of this substance. Avogadro constant is related to Système Internationale base units by defining the very concept of chemical quantity. Revisions of the base units created a need to redefine the Avogadro constant, where a collaborative work called the Avogadro Project is established to employ optical interferometry to measure the diameter of high quality 100â¯mm silicon spheres. We propose far-infrared spectroscopy for determining the Avogadro constant by using elastic scattering from the 100â¯mm Avogadro Project silicon spheres. Similar spectroscopic methods are already in use in the near-infrared, relating whispering gallery modes of the 1â¯mm silicon spheres to the diameter of the spheres. We present numerical simulations in the far-infrared and the near-infrared, as well as spatially scaled down elastic scattering measurements in the near-infrared. These numerical and experimental results show that, the diameter measurements of 100â¯mm single crystal silicon spheres with elastic scattering in the far-infrared can be considered as an alternative to optical interferometry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 210, May 2018, Pages 173-179
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 210, May 2018, Pages 173-179
نویسندگان
Muhammad Hamza Humayun, Imran Khan, Farhan Azeem, Muhammad Rehan Chaudhry, UlaÅ Sabahattin Gökay, Mohammed Sharif Murib, Ali Serpengüzel,