Self assembly of magnetic nanoparticles at silicon surfaces

Soft Matter ◽  
2015 ◽  
Vol 11 (23) ◽  
pp. 4695-4704 ◽  
Author(s):  
Katharina Theis-Bröhl ◽  
Philipp Gutfreund ◽  
Alexei Vorobiev ◽  
Max Wolff ◽  
Boris P. Toperverg ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Applied Magnetic Field ◽  
Self Assembly ◽  
Neutron Reflectometry ◽  
Silicon Surfaces

Neutron reflectometry was used to determine interfacial ordering of ferrofluid particles near a Si surface, under shear, with an applied magnetic field, and without these influences.

scholarly journals The influence of an applied magnetic field on the self-assembly of magnetic nanogels

2020 ◽  
Vol 307 ◽  
pp. 112902 ◽  
Author(s):  
Ivan S. Novikau ◽  
Pedro A. Sánchez ◽  
Sofia S. Kantorovich
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Self Assembly ◽  
The Self

Magnetic Assistance for Suppressing Cross-Reactions Between Biomolecules in Immunoassay

2010 ◽  
Author(s):  
Chin-Yih Hong ◽  
Shieh-Yueh Yang ◽  
Herng-Er Horng ◽  
Hong-Chang Yang
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Centrifugal Force ◽  
Applied Magnetic Field ◽  
Cross Reactions ◽  
Target Molecules ◽  
The Cross ◽  
Alternative Current ◽  
The Magnetic Field ◽  
Current Magnetic Field

A method involving the use of magnetic nanoparticles to suppress the cross-reactions in immunoassay is developed. Antibodies are coated onto magnetic nanoparticles. These antibodies bind with target and non-target molecules. Once an alternative-current magnetic field is applied, magnetic nanoparticles oscillate with the magnetic field. The target and non-target molecules attached onto magnetic nanoparticles via antibodies experience a centrifugal force, which is against the association between antibodies and target/non-target molecules. Theoretically, the centrifugal force is proportional to the square of the frequency of the applied magnetic field. Thus, the strength of the centrifugal force can be manipulated by changing the frequency of the applied magnetic field. By well controlling the frequency of applied magnetic field, the centrifugal force can be stronger than the binding between antibodies and non-target molecules, but still weaker than that of target molecules. Consequently, the binding between antibodies and non-target molecules is broken by the centrifugal force.

Response of self-assembly for magnetite nanocrystal in magnetic fluid under an applied magnetic field

2008 ◽  
Vol 6 (10) ◽  
pp. 767-769 ◽  
Author(s):  
邹芸 Yun Zou ◽  
聂义友 Yiyou Nie ◽  
狄子昀 Ziyun Di ◽  
张冬琛 Dongchen Zhang ◽  
桑明煌 Minghuang Sang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Applied Magnetic Field ◽  
Self Assembly

Magnetically tunable colloidal micromirrors

2016 ◽  
Vol 1 (1) ◽  
pp. 64-68 ◽  
Author(s):  
James Goebl ◽  
Yiding Liu ◽  
Sandy Wong ◽  
Serkan Zorba ◽  
Yadong Yin
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Applied Magnetic Field

Herein we demonstrate a method for decorating highly reflective 2D gold microplates with magnetic nanoparticles to produce an optical colloid that can be actuated using an applied magnetic field.

Magnetic field-directed self-assembly of magnetic nanoparticles

MRS Bulletin ◽  
2013 ◽  
Vol 38 (11) ◽  
pp. 915-920 ◽  
Author(s):  
Joseph B. Tracy ◽  
Thomas M. Crawford
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Self Assembly ◽  
Image Position

Abstract

The orientation of the neuronal growth process can be directed via magnetic nanoparticles under an applied magnetic field

2014 ◽  
Vol 10 (7) ◽  
pp. 1549-1558 ◽  
Author(s):  
Cristina Riggio ◽  
M. Pilar Calatayud ◽  
Martina Giannaccini ◽  
Beatriz Sanz ◽  
Teobaldo E. Torres ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Applied Magnetic Field ◽  
Growth Process ◽  
Neuronal Growth

scholarly journals Magnetic field-induced self-assembly of iron oxide nanocubes

2015 ◽  
Vol 181 ◽  
pp. 403-421 ◽  
Author(s):  
Gurvinder Singh ◽  
Henry Chan ◽  
T. Udayabhaskararao ◽  
Elijah Gelman ◽  
Davide Peddis ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Self Assembly ◽  
Inorganic Nanoparticles ◽  
The Self ◽  
One Dimensional ◽  
Experimental Parameters ◽  
First Time ◽  
The Magnetic Field

Self-assembly of inorganic nanoparticles has been studied extensively for particles having different sizes and compositions. However, relatively little attention has been devoted to how the shape and surface chemistry of magnetic nanoparticles affects their self-assembly properties. Here, we undertook a combined experiment–theory study aimed at better understanding of the self-assembly of cubic magnetite (Fe3O4) particles. We demonstrated that, depending on the experimental parameters, such as the direction of the magnetic field and nanoparticle density, a variety of superstructures can be obtained, including one-dimensional filaments and helices, as well as C-shaped assemblies described here for the first time. Furthermore, we functionalized the surfaces of the magnetic nanocubes with light-sensitive ligands. Using these modified nanoparticles, we were able to achieve orthogonal control of self-assembly using a magnetic field and light.

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