Cellular effects of magnetic nanoparticles explored by atomic force microscopy

2015 ◽  
Vol 3 (9) ◽  
pp. 1284-1290 ◽  
Author(s):  
Hongli Mao ◽  
Jingchao Li ◽  
Ida Dulińska-Molak ◽  
Naoki Kawazoe ◽  
Yoshihiko Takeda ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Magnetic Nanoparticles ◽  
Force Microscopy ◽  
Cellular Effects ◽  
Atomic Force

Atomic force microscopy (AFM) was used to explore the cellular effects caused by magnetic nanoparticles.

scholarly journals Magnetic Imaging of Encapsulated Superparamagnetic Nanoparticles by Data Fusion of Magnetic Force Microscopy and Atomic Force Microscopy Signals for Correction of Topographic Crosstalk

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2486
Author(s):  
Marc Fuhrmann ◽  
Anna Musyanovych ◽  
Ronald Thoelen ◽  
Sibylle von Bomhard ◽  
Hildegard Möbius
Keyword(s):  
Atomic Force Microscopy ◽  
Magnetic Properties ◽  
Magnetic Nanoparticles ◽  
Data Fusion ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Capacitive Coupling ◽  
Phase Image ◽  
Force Microscopy ◽  
Atomic Force

Encapsulated magnetic nanoparticles are of increasing interest for biomedical applications. However, up to now, it is still not possible to characterize their localized magnetic properties within the capsules. Magnetic Force Microscopy (MFM) has proved to be a suitable technique to image magnetic nanoparticles at ambient conditions revealing information about the spatial distribution and the magnetic properties of the nanoparticles simultaneously. However, MFM measurements on magnetic nanoparticles lead to falsifications of the magnetic MFM signal due to the topographic crosstalk. The origin of the topographic crosstalk in MFM has been proven to be capacitive coupling effects due to distance change between the substrate and tip measuring above the nanoparticle. In this paper, we present data fusion of the topography measurements of Atomic Force Microscopy (AFM) and the phase image of MFM measurements in combination with the theory of capacitive coupling in order to eliminate the topographic crosstalk in the phase image. This method offers a novel approach for the magnetic visualization of encapsulated magnetic nanoparticles.

Electrostatic Forces on the Surface of Metals as Measured by Atomic Force Microscopy

2000 ◽  
Vol 10 (1-2) ◽  
pp. 15
Author(s):  
Eugene Sprague ◽  
Julio C. Palmaz ◽  
Cristina Simon ◽  
Aaron Watson
Keyword(s):  
Atomic Force Microscopy ◽  
Electrostatic Forces ◽  
Force Microscopy ◽  
Atomic Force
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