کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
607823 | 1454605 | 2013 | 6 صفحه PDF | دانلود رایگان |

Chemically pure mono-dispersed spherical bismuth (Bi) nanoparticles (NPs) having diameter in the range of 5–20 nm are prepared by liquid pulsed laser ablation technique. The effect of ablation time and the surfactant (C12H25NaO4S) on the size of nanoparticles are studied and both were found to play crucial role in controlling the size of the NPs and consequently, the optical properties. An absorption band observed around 980 nm is attributed to semimetal to semiconductor transition. Interestingly, prepared semiconductor Bi NPs are found to generate intense heat when 976 nm laser wavelength falls on them and thus generates a hope for potential biomedical applications viz. hypothermia treatment.
Figure optionsDownload high-quality image (132 K)Download as PowerPoint slideHighlights
► Spherical quantum dots.
► Effect of surfactant on morphology of nanoparticles.
► Conversion of semimetal to semiconductor.
► Heating effect in case of the quantum dot.
Journal: Journal of Colloid and Interface Science - Volume 390, Issue 1, 15 January 2013, Pages 11–16