کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1679013 1009988 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the interpretation of the forbidden spots observed in the electron diffraction patterns of flat Au triangular nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
On the interpretation of the forbidden spots observed in the electron diffraction patterns of flat Au triangular nanoparticles
چکیده انگلیسی

In many cases nanostructures present forbidden spots in their electron diffraction patterns when they are observed by transmission electron microscopy (TEM). To interpretate their TEM and high resolution transmission electron microscopy (HRTEM) images properly, an understanding of the origin of these spots is necessary. In this work we comment on the origin of the forbidden spots observed in the [1 1 1] and [1 1 2] electron diffraction patterns of flat gold triangular nanoparticles. The forbidden spots were successfully indexed as corresponding to the first laue Zone (FOLZ) and the HRTEM images presented a contrast produced by the interference of the zero-order Laue zone (ZOLZ) and FOLZ spots. We discuss the use of the forbidden spots in the study of the structure of nanoparticles and show that they are related to the shape and incompleteness of layers in the very thin particles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 108, Issue 9, August 2008, Pages 929–936
نویسندگان
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