نتایج جستجو برای: magnetic silica nano particles

تعداد نتایج: 558779  

Journal: :international journal of research in materials science 0
kaveh arzani department of materials engineering, science and research branch, islamic azad university, tehran, iran seyyed vahid ahmadi farmand department of materials engineering, science and research branch, islamic azad university, tehran, iran

abstract self compacting concrete (scc) is a new construction material in the world. the aim of this research is to construct self compacting concrete with high compressive strength using combination of nano silica and micro silica. for this purpose, nano silica, micro silica, portland cement type 2, superplasticizer (sp), and gravel and sand have been used. three different groups of samples wi...

پایان نامه :0 1391

یکی از پلیمر های مورد توجه در زمینه مهندسی بافت پلی لاکتیک گلایکولیک اسید (plga) است. plga دارای خواص مطلوب زیست سازگاری و زیست تخریب پذیری می باشد ولی دارای خواص سطحی مطلوب برای چسبیدن، تکثیر وگسترش سلول ها نمی باشد. به همین دلیل پلیمرهای طبیعی و مواد معدنی طبیعی را به منظور بهبود برهم کنش بین سلول و داربست و همچنین بهبود خواص مکانیکی به داربست اضافه می کنند. در این تحقیق، ابتدا نانوالیافی از ...

2009
A. Teleki M. Suter P. R. Kidambi O. Ergeneman F. Krumeich B. J. Nelson S. E. Pratsinis

Magnetic nanoparticles are frequently coated with SiO2 to improve their functionality and bio-compatibility in a range of biomedical and polymer nanocomposite applications. In this paper, a scalable flame aerosol technology is used to produce highly dispersible, superparamagnetic iron oxide nanoparticles hermetically coated with silica to retain full magnetization performance. Iron oxide partic...

Journal: :Composites Science and Technology 2022

The use of thermosetting polymer composites and adhesives in structural applications such as electric cars is limited by the poor toughness due to its highly crosslinked structure. addition a small weight fraction silica nano-particles thermoset polymers effective means improving mechanical properties polymer, but not seen with micro-sized particles. This effect has been investigated using expe...

2016
Toshitaka Ishizaki Hideyuki Nakano Shin Tajima Naoko Takahashi

A thin, insulating layer with high electrical resistivity is vital to achieving high performance of powder magnetic cores. Using layer-by-layer deposition of silica nanosheets or colloidal silica over insulating layers composed of strontium phosphate and boron oxide, we succeeded in fabricating insulating layers with high electrical resistivity on iron powder particles, which were subsequently ...

2014
Ou Chen Lars Riedemann Fred Etoc Hendrik Herrmann Mathieu Coppey Mariya Barch Christian T. Farrar Jing Zhao Oliver T. Bruns He Wei Peng Guo Jian Cui Russ Jensen Yue Chen Daniel K. Harris Jose M. Cordero Zhongwu Wang Alan Jasanoff Dai Fukumura Rudolph Reimer Maxime Dahan Rakesh K. Jain Moungi G. Bawendi

Magneto-fluorescent particles have been recognized as an emerging class of materials that exhibit great potential in advanced applications. However, synthesizing such magneto-fluorescent nanomaterials that simultaneously exhibit uniform and tunable sizes, high magnetic content loading, maximized fluorophore coverage at the surface and a versatile surface functionality has proven challenging. He...

2015
Ulrike Bernauer Qasim Chaudhry Pieter Coenraads Gisela Degen Maria Dusinska Werner Lilienblum Elsa Nielsen Thomas Platzek Christophe Rousselle Jan van Benthem P. H. M. Hoet

Revision of the opinion on Silica, Hydrated Silica, and Silica Surface Modified with Alkyl Silylates (nano form)

2013
Viola Tokárová Anna Pittermannová Vlastimil Král Pavlína Řezáčová František Štěpánek

This work is concerned with the surface modification of fluorescent silica nanoparticles by a monoclonal antibody (M75) and the specific bioadhesion of such particles to surfaces containing the PG domain of carbonic anhydrase IX (CA IX), which is a trans-membrane protein specifically expressed on the surfaces of several tumor cell lines. The adhesion strength of antibody-bearing silica nanopart...

Passive method is a new procedure in stabilizing loose soils. This methodology is a type of interlocking soil particles structures. In order to optimum improve in this method, it is necessary to achieve proper penetration length and increase the shear strength of parameters. Researches have shown an increased resistance to liquefaction and decreased permeability due to colloidal Nano silica inj...

Journal: :Journal of physics 2023

Abstract Substances with superparamagnetism, a special magnetic effect, are magnetized under external field. When the applied field disappears, superparamagnetic substances have almost zero magnetization intensity, quite small coercivity. The performance of powder or suspension used in particle detection greatly affects sensitivity. This paper studies new method for preparing nano-superparamagn...

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