نتایج جستجو برای: silver alloy nanoparticles

تعداد نتایج: 191798  

2016
Jennifer Nguyen David Geiger Murad Kurwa

Sn3.0Ag0.5Cu (SAC305) is currently the most popular near eutectic lead-free alloy used in the manufacturing processes. Over the last several years, the price of silver has dramatically increased driving a desire for lower silver alloy alternatives. As a result, there is a significant increase in the number of alternative low/no silver lead-free solder alloys available in the industry recently. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم پایه 1390

محلول سیستئین به محلول حاوی نانوذرات نقره پایدارشده با پلی وینیل پیرولیدون و کاتیون باریم اضافه گردید. با اضافه کردن سیستئین انباشتگی نانوذرات نقره رخ داده و رنگ محلول کلوئیدی از زرد به صورتی تغییر پیدا می کند, و قله پیک پلاسمونیک نانوذرات نقره کلوئیدی در طول موج 397 نانومتر به سمت طول موج های بلندتر شیفت کرده و شاهد ظاهر شدن پیک جدیدی در طول موج 520 نانومتر خواهیم بود. در واقع کاتیون باریم نقش...

2016

Hollow PtAg alloy nanospheres were synthesized via galvanic replacement reaction between silver nanoparticles and K2PtCl4 at 60 C. Their morphology, composition and structure were characterized by UV-vis, XRD, TEM, HRTEM, SAED, EDX and XPS. It was found that the shell thickness and roughness could be controlled by varying the amount of Pt precursor solutions. Compared with commercially availabl...

2002

As the electronics industry begins to focus upon the tin-silver-copper family of alloys as a viable replacement for tin-lead solders, research needs to be done to determine if any particular alloy is best suited for the broadest range of applications. The tin-silver-copper family of alloys has earned a great deal of positive response from various industry consortia and organizations in recent y...

Journal: :international journal of nano dimension 0
kirandeep kaur department of biotechnology, guru nanak girls college, ludhiana, india ratika komal department of biotechnology, guru nanak girls college, ludhiana, india

in the present study, we have reported the biological synthesis of silver nanoparticles (agnps) using aqueous leaf extract prepared by hot percolation treatment of wheat varities (pbw343, triticum durum and aegilops tauschii )for the reduction of silver ions to silver nanoparticles. bioreduction of ag+ to ag0 was observed when aqueous extract augmented with silver nitrate (agno3) was incubated ...

Journal: :Faraday discussions 2016
En Ning Saw Viktoria Grasmik Christian Rurainsky Matthias Epple Kristina Tschulik

The increasing interest in producing bimetallic nanoparticles and utilizing them in modern technologies sets the demand for fast and affordable characterization of these materials. To date Scanning Transmission Electron Microscopy (STEM) coupled to energy dispersive X-ray spectroscopy is usually used to determine the size and composition of alloy nanoparticles, which is time-consuming and expen...

Journal: :Nanoscale 2014
Mariana Vignoni Hasitha de Alwis Weerasekera Madeline J Simpson Jaywant Phopase Thien-Fah Mah May Griffith Emilio I Alarcon Juan C Scaiano

Capping silver nanoparticles with LL37 peptide eradicates the antiproliferative effect of silver on primary skin cells, but retains the bactericidal properties of silver nanoparticles with activities comparable to silver nitrate or silver sulfadiazine. In addition, LL37 capped silver nanoparticles have anti-biofilm formation activity.

2012
Henrik Schneidewind Thomas Schüler Katharina K Strelau Karina Weber Dana Cialla Marco Diegel Roland Mattheis Andreas Berger Robert Möller Jürgen Popp

Silver nanoparticles were synthesized by an enzyme-induced growth process on solid substrates. In order to customize the enzymatically grown nanoparticles (EGNP) for analytical applications in biomolecular research, a detailed study was carried out concerning the time evolution of the formation of the silver nanoparticles, their morphology, and their chemical composition. Therefore, silver-nano...

2017
Mohamed Ibrahim Shaalan Magdy Mohamed El-Mahdy Sarah Theiner Mansour El-Matbouli Mona Saleh

BACKGROUND Antibiotic resistance is a global issue that threatens public health. The excessive use of antibiotics contributes to this problem as the genes of antibiotic resistance can be transferred between the bacteria in humans, animals and aquatic organisms. Metallic nanoparticles could serve as future substitutes for some conventional antibiotics because of their antimicrobial activity. The...

2017
Gopalu Karunakaran Matheswaran Jagathambal Nguyen Van Minh Evgeny Kolesnikov Denis Kuznetsov

extracellular extract for the synthesis of silver nanoparticles using AgNO3. The formation of nanoparticles was confirmed by different methods, such as UV-Vis absorption spectroscopy, XRD, FTIR, EDX, and TEM analysis. The formation of silver nanoparticles (AgNPs) was confirmed by the change in color from light yellow to dark brown. The absorbance peak obtained at 430 nm confirmed the presence o...

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