نتایج جستجو برای: atomic spectroscopy
تعداد نتایج: 252977 فیلتر نتایج به سال:
This year’s Atomic Spectroscopy Award recipient is Andreas Riedo. For the past decade, Riedo’s research has focused on development of fundamental measurement methodologies using miniaturized laser ablation–desorption ionization mass spectrometry (LIMS or LMS) for chemical (elements, isotopes, and molecules) analysis complex mineral surfaces, including semiconductor crystalline solids materials ...
In recent years, the characterization of radiation falling within so-called “terahertz (THz) gap” has become an ever more prominent issue due to increasing use THz systems in applications such as nondestructive testing, security screening, telecommunications, and medical diagnostics. detection technologies have advanced rapidly, yet traceable calibration remains challenging. this paper, we demo...
Introduction The development of laser diodes has increased the variety of practical applications for lasers as light sources in analytical spectroscopy. Lasers are excellent radiation sources due to their monochromaticity, good beam focusing capabilities, and small line-widths but have traditionally been expensive and difficult to operate, limiting their applications to specialized fields. Beca...
Many technologies based on cells containing alkali-metal atomic vapor benefit from the use of antirelaxation surface coatings in order to preserve atomic spin polarization. In particular, paraffin has been used for this purpose for several decades and has been demonstrated to allow an atom to experience up to 10 000 collisions with the walls of its container without depolarizing, but the detail...
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در کار اول، از روش میکرو استخراج مایع – مایع پخشی بر پایه مایع یونی برای جداسازی و پیش تغلیظ مقادیر ناچیز یون سرب در نمونه آب های طبیعی و اندازه گیری آن بوسیله اسپکترومتر جذب اتمی شعله ای استفاده شد. از مایع یونی به عنوان حلال استخراجی و از متانول به عنوان حلال پخش کننده استفاده گردید.جهت تبدیل یون سرب به گونه آبگریز از لیگاند سدیم دی اتیل دی تیو کاربامات تری هیدرات استفاده شد .پارامترهای موثر ...
It has long been accepted that the formation of superlattices in hexagonal-based potassium tungsten bronzes is attributed to K vacancies only, together with small displacements of W cations. Here, the superlattices within potassium tungsten bronze nanosheets both structurally and spectroscopically at atomic resolution using comprehensive transmission electron microscopy techniques are studied. ...
understand complex systems and better engineer their functions has been driving scanning probe microscopies since their inception (see figure 1). Both atomic force microscopy (AFM) and Raman spectroscopy are techniques used to gather information about the surface properties and chemical information of a sample. There are many reasons to combine these two technologies, and this application note ...
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