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HomeNano HybridsNano Hybrids Vol. 4Imaging of Colloidal Gold Nanoparticle Using...

Imaging of Colloidal Gold Nanoparticle Using Atomic Force Microscope

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Abstract:

Colloidal gold or also known as gold nanoparticle (AuNP) is a suspension of sub-nanometer-sized particle of gold in a fluid usually water. The synthesized AuNP have particle sizes ranging from, e.g. 10 nm to 100 nm with color changing from an intense red color (for particle less than 100 nm) to a dirty yellowish color (for larger particle). The size of AuNP determines their unique optic, electronic and magnetic properties. AuNP nowadays has widely used in material science [ and biomedical [2,. For many of this application, the AuNP need to be monodispersed and have a specific size. Generally, colloidal AuNP can be synthesis as monodispersed nanoparticles with core sizes ranging from 1nm to 250nm. The synthesis of AuNP can be controlled in different size and shapes due to their ability to react and agglomerate with other nanoparticles in their ambient condition [. Furthermore, AuNP can also becomes more prone to flocculation and aggregation [. As the size of colloidal AuNP increase so do their sensitivity to salt and environment. AuNP have increasingly gain interest due to their unique properties ofcontrolable morphology [ and size dispersion [6,, less toxicity and ease in synthesis and detection.

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Nano Hybrids Vol. 4

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Periodical:

Nano Hybrids (Volume 4)

Pages:

47-60

DOI:

https://doi.org/10.4028/www.scientific.net/NH.4.47

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Online since:

May 2013

Authors:

Nurul Sabihah Zakaria, Rabizah Makhsin Siti, Azlan Abdul Aziz, Khairunisak Abdul Razak

Keywords:

Atomic Force Microscopy (AFM), Gold Nanoparticles (GNP), Imaging, Nanotechnology

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