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مقالۀ پژوهشی: ساخت و مشخصه‌یابی نانوذرات نقره تثبیت شده روی اکسیدگرافین و بررسی اثر تابش فرابنفش بر رفتار غیرخطی آنها | ||
| فیزیک کاربردی ایران | ||
| دوره 14، شماره 2 - شماره پیاپی 37، تیر 1403، صفحه 115-127 اصل مقاله (2.82 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22051/ijap.2024.45558.1364 | ||
| نویسندگان | ||
| خدیجه اسماعیلی1؛ مسعود ترکمن2؛ حمید نجاری* 3؛ رضا رسولی4 | ||
| 1دانش‌آموختۀ کارشناسی ارشد، گروه فیزیک، دانشگاه زنجان، زنجان، ایران | ||
| 2دانشجوی دکترا، گروه فیزیک، دانشگاه زنجان، زنجان، ایران | ||
| 3استادیار، گروه فیزیک، دانشگاه زنجان، زنجان، ایران | ||
| 4استاد، گروه فیزیک، دانشگاه زنجان، زنجان، ایران | ||
| چکیده | ||
| در این پژوهش اکسیدگرافین به روش بهبود یافته‌ی هامرز تهیه شد. سپس با روش قوس الکتریکی نانوذرات نقره وارد محیط اکسیدگرافین رقیقشده با آب دو بار یونیده شد و در پایان، محلول کلوییدی هسته پوستهی نقره/ اکسید نقره بدست آمد. پس از تهیهی صفحات اکسیدگرافین شامل نانوذرات نقره تثبیت شده روی آن، نمونههایی با غلظت و حجم یکسان تهیه و به ترتیب به مدت 0 ، 30 ، 60 ، 120 و 240 دقیقه تحت تابش امواج فرابنفش قرار داده شدند. با بررسی طیفهای بدست آمده، رفتار خطی و غیرخطی آنها در دو آزمایش متفاوت روبش محوری و مدولاسیون فضایی فاز مورد مطالعه قرار گرفت. نتایج طیفسنجی مرئی- فرابنفش، تبدیل فوریه فروسرخ و پراش پرتو ایکس نشان داد که محلول بدست آمده شامل نانوصفحات اکسیدگرافین و نانوذرات نقره است. بررسی ویژگی‌های اپتیکی غیرخطی نمونهها نیز نشان داد ضریب شکست غیرخطی برای نمونهها از مرتبه 14- 10 5/0 – است. اگرچه در اثر تابش فرابنفش به آنها، ضریب شکست غیرخطی آنها تغییرات ناچیزی داشت. از طرف دیگر، در ساختار تشکیل شده الگوی پراش دو قلّهای مشاهده شد. | ||
| کلیدواژه‌ها | ||
| تابش فرا بنفش؛ قوس الکتریکی؛ اکسید گرافن؛ ضرایب غیر خطی شکست؛ الگوی پراش | ||
| عنوان مقاله [English] | ||
| Research Paper: Producing and Characterizing Silver Nanoparticles Stabilized on GO and Investigating the Effect of Ultraviolet Radiation on their Nonlinear Behavior | ||
| نویسندگان [English] | ||
| Khadijeh Esmaeeli1؛ Masoud Torkaman2؛ Hamid Nadjari3؛ Reza Rasuli4 | ||
| 1M. Sc. Graduated, Department of Physics, Zanjan University, Zanjan, Iran | ||
| 2PhD Student, Department of Physics, Zanjan University, Zanjan, Iran | ||
| 3Assistant Professor, Department of Physics, Zanjan University, Zanjan, Iran | ||
| 4Professor, Department of Physics, Zanjan University, Zanjan, Iran | ||
| چکیده [English] | ||
| In this research, graphene oxide was prepared by Hamers' improved method, then, with the electric arc method, silver nanoparticles enter the graphene oxide environment diluted with deionized water, and a colloid of core-shell,silver-silver oxide is prepared. After the samples were prepared, graphene oxide plates containing silver nanoparticles were fixed on them, and samples with the same concentration and volume were placed under ultraviolet radiation for 0, 30, 60, 120, and 240 minutes, respectively. Then, various spectra are prepared from the samples and their linear and non-linear behavior is studied in two experiments, Z-scan and phase spatial modulation. The results of ultraviolet-visible spectroscopy, infrared Fourier transform, and X-ray diffraction show that the resulting solution contains graphene oxide nanoplates and silver oxide nanoparticles. Investigating the nonlinear optical properties of the samples also shows that the nonlinear refractive index of the samples is of the order of , which by ultraviolet radiation to the samples, their nonlinear refractive index changes slightly, and on the other hand, the diffraction pattern with two peaks is observed in the formed structure. | ||
| کلیدواژه‌ها [English] | ||
| UV Illumination, Electric Arc, GO, Nonlinear Refractive Index, Diffraction Pattern | ||
| مراجع | ||
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