Fabrication of gold nanoparticles in water by laser ablation technique and their characterization

A. F.M.Y. Haider*, S. Sengupta, K. M. Abedin, Aminul I. Talukder

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

23 اقتباسات (Scopus)


A colloidal solution of gold nanoparticles in deionized nanopure water was produced by laser ablation technique without the use of any chemical/surfactant. Spectral characterization and morphological studies of these nanoparticles were carried out by UV-Vis Spectroscopy and Scanning Electron Microscopy, respectively. A number of variables of the ablating laser pulse have been used to control the size of the fabricated nanoparticles. Excellent correlation between ablating laser pulse parameter and optical and morphological parameters of the gold colloids were obtained. The peak of the extinction spectra shows a monotonic blue shift for laser fluence of 410 J/cm 2 and above. Below this the extinction peak remains fairly constant in wavelength. Blue shifts of the extinction spectra were also observed with increasing re-ablation time of previously ablated gold colloids. Possible explanations of all these observations are discussed.

اللغة الأصليةEnglish
الصفحات (من إلى)487-495
عدد الصفحات9
دوريةApplied Physics A: Materials Science and Processing
مستوى الصوت105
رقم الإصدار2
المعرِّفات الرقمية للأشياء
حالة النشرPublished - نوفمبر 2011
منشور خارجيًانعم

ASJC Scopus subject areas

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