نتایج جستجو برای: silicon particles

تعداد نتایج: 233671  

Journal: :Journal of biomedical optics 2011
Alvaro Muñoz-Noval Vanessa Sánchez-Vaquero Vicente Torres-Costa Darío Gallach Vicente Ferro-Llanos José Javier Serrano Miguel Manso-Silván Josefa Predestinación García-Ruiz Francisco del Pozo Raúl J Martín-Palma

This work describes a novel process for the fabrication of hybrid nanostructured particles showing intense tunable photoluminescence and a simultaneous ferromagnetic behavior. The fabrication process involves the synthesis of nanostructured porous silicon (NPSi) by chemical anodization of crystalline silicon and subsequent in pore growth of Co nanoparticles by electrochemically-assisted infiltr...

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

طراحی و سنتز پلیمر های کئوردینانسیونی متخلخل یا چارچوب های فلز- آلی به علت ساختارهای جالب این ترکیبات و قابلیت های کاربردی آنها برای ذخیره و جداسازی گاز، کاتالیز، تشخیص و جداسازی انانتیومرها، خواص مغناطیسی، تنظیم لومینسانس و غیره توجه زیادی را به خود جلب کرده است. اخیرا مشخص شده است که برخی لیگاندهای آلی مسطح صلب مثل ایمیدازول-5،4-دی کربوکسیلیک اسید (h3idc) برای تشکیل چارچوب های فلز- آلی مناسب ...

2013
Jyoti Prakash Kar

In this project work Si nanowires were fabricated on the Si substrate by aqueous method. In this aquoues method Ag is used for electroless chemical etching. The precursors those were taken are AgNO3, HF and H2O2. Si nanowires are fabricated at 550C. The samples were characterized by X-ray diffraction and scanning electron microscope. Result shows morphology of the Si nanowires by scanning elect...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2010
Ciro Chiappini Ennio Tasciotti Jean R Fakhoury Daniel Fine Lee Pullan Young-Chung Wang Lianfeng Fu Xuewu Liu Mauro Ferrari

The use of mesoporous silicon particles for drug delivery has been widely explored thanks to their biodegradability and biocompatibility. The ability to tailor the physicochemical properties of porous silicon at the micro- and nanoscale confers versatility to this material. A method for the fabrication of highly reproducible, monodisperse, mesoporous silicon particles with controlled physical c...

سعید محمدی, ,

  Yrast states in mirror nuclei 55Co and 55Ni have been populated with a radioactive ion beam using the Isotope Separator On-Line method. A shielded array of 7 Compton suppressed germanium detectors recorded reaction gamma-rays. For channel selection, an array of 128 independent silicon detectors was used to differentiate exit channels with different number of proton and alpha particles emitted...

In this paper, we propose to optimize manufacturing methods of memory cells by produced silicon nanoparticles via electrical spark discharge of silicon electrodes in water to reduce the energy consumption for low power applications. The pulsed spark discharge with the peak current of 60 A and a duration of a single discharge pulse of 60 µs was used in our experiment. The structure, morphology, ...

2016
Huiyuan Hou Chengyun Wang Kaihui Nan William R. Freeman Michael J. Sailor Lingyun Cheng

PURPOSE The current study aims to evaluate a porous silicon-based drug delivery system meant for sustained delivery of dexamethasone (Dex) to the vitreous and retina. METHODS Dexamethasone was grafted covalently into the pore walls of fully oxidized porous silicon particles (pSiO2-COO-Dex), which then was evaluated for the pharmacological effect of the payload on cultured ARPE19 cells before ...

Journal: :journal of computer and robotics 0
mehdi mardanian department of physics, qazvin branch, islamic azad university, qazvin, iran

in this paper, we propose to optimize manufacturing methods of memory cells by produced silicon nanoparticles via electrical spark discharge of silicon electrodes in water to reduce the energy consumption for low power applications. the pulsed spark discharge with the peak current of 60 a and a duration of a single discharge pulse of 60 µs was used in our experiment. the structure, morphology, ...

2012
Manel Abouda-Lachiheb Nesma Nafie Mongi Bouaicha

It was reported that during silicon etching, silver was subjected to have a controversial role. Some researchers debate that silver protects silicon, and, at the same time, other ones confirm that silver catalyzes silicon underneath. In this paper, we give experimental results arguing the dual role that silver has during the formation of silicon nanostructures. We give a proof that the role of ...

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