کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1678928 1009978 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electron microscopy localization and characterization of functionalized composite organic-inorganic SERS nanoparticles on leukemia cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Electron microscopy localization and characterization of functionalized composite organic-inorganic SERS nanoparticles on leukemia cells
چکیده انگلیسی
We demonstrate the use of electron microscopy as a powerful characterization tool to identify and locate antibody-conjugated composite organic-inorganic nanoparticle (COINs) surface enhanced Raman scattering (SERS) nanoparticles on cells. U937 leukemia cells labeled with antibody CD54-conjugated COINs were characterized in their native, hydrated state using wet scanning electron microscopy (SEM) and in their dehydrated state using high-resolution SEM. In both cases, the backscattered electron (BSE) detector was used to detect and identify the silver constituents in COINs due to its high sensitivity to atomic number variations within a specimen. The imaging and analytical capabilities in the SEM were further complemented by higher resolution transmission electron microscopy (TEM) images and scanning Auger electron spectroscopy (AES) data to give reliable and high-resolution information about nanoparticles and their binding to cell surface antigens.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 109, Issue 1, December 2008, Pages 111-121
نویسندگان
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