Probing Nanoscale Interactions on Biocompatible Cluster-Assembled Titanium Oxide Surfaces by Atomic Force Microscopy

2011 ◽  
Vol 11 (6) ◽  
pp. 4739-4748 ◽  
Author(s):  
Varun Vyas ◽  
Alessandro Podestà ◽  
Paolo Milani
Keyword(s):  
Atomic Force Microscopy ◽  
Titanium Oxide ◽  
Oxide Surfaces ◽  
Force Microscopy ◽  
Atomic Force ◽  
Nanoscale Interactions

Human Plasma Fibrinogen Adsorption on Ultraflat Titanium Oxide Surfaces Studied with Atomic Force Microscopy

Langmuir ◽  
2000 ◽  
Vol 16 (21) ◽  
pp. 8167-8175 ◽  
Author(s):  
Paola Cacciafesta ◽  
Andrew D. L. Humphris ◽  
Klaus D. Jandt ◽  
Mervyn J. Miles
Keyword(s):  
Atomic Force Microscopy ◽  
Human Plasma ◽  
Titanium Oxide ◽  
Plasma Fibrinogen ◽  
Oxide Surfaces ◽  
Force Microscopy ◽  
Atomic Force ◽  
Fibrinogen Adsorption

A non-contact atomic force microscopy and  force spectroscopy  study of charging on oxide surfaces

2004 ◽  
Vol 15 (7) ◽  
pp. 862-866 ◽  
Author(s):  
C L Pang ◽  
T V Ashworth ◽  
H Raza ◽  
S A Haycock ◽  
G Thornton
Keyword(s):  
Atomic Force Microscopy ◽  
Force Spectroscopy ◽  
Oxide Surfaces ◽  
Spectroscopy Study ◽  
Force Microscopy ◽  
Atomic Force

scholarly journals Manipulation of gold colloidal nanoparticles with atomic force microscopy in dynamic mode: influence of particle–substrate chemistry and morphology, and of operating conditions

2011 ◽  
Vol 2 ◽  
pp. 85-98 ◽  
Author(s):  
Samer Darwich ◽  
Karine Mougin ◽  
Akshata Rao ◽  
Enrico Gnecco ◽  
Shrisudersan Jayaraman ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Operating Conditions ◽  
Critical Parameters ◽  
Dynamic Mode ◽  
Ambient Conditions ◽  
Force Microscopy ◽  
Substrate Structure ◽  
Atomic Force ◽  
Nanoscale Interactions ◽  
Lower Mobility

One key component in the assembly of nanoparticles is their precise positioning to enable the creation of new complex nano-objects. Controlling the nanoscale interactions is crucial for the prediction and understanding of the behaviour of nanoparticles (NPs) during their assembly. In the present work, we have manipulated bare and functionalized gold nanoparticles on flat and patterned silicon and silicon coated substrates with dynamic atomic force microscopy (AFM). Under ambient conditions, the particles adhere to silicon until a critical drive amplitude is reached by oscillations of the probing tip. Beyond that threshold, the particles start to follow different directions, depending on their geometry, size and adhesion to the substrate. Higher and respectively, lower mobility was observed when the gold particles were coated with methyl (–CH3) and hydroxyl (–OH) terminated thiol groups. This major result suggests that the adhesion of the particles to the substrate is strongly reduced by the presence of hydrophobic interfaces. The influence of critical parameters on the manipulation was investigated and discussed viz. the shape, size and grafting of the NPs, as well as the surface chemistry and the patterning of the substrate, and finally the operating conditions (temperature, humidity and scan velocity). Whereas the operating conditions and substrate structure are shown to have a strong effect on the mobility of the particles, we did not find any differences when manipulating ordered vs random distributed particles.

Research on the atomic force microscopy-based fabrication of nanochannels on silicon oxide surfaces

2010 ◽  
Vol 55 (30) ◽  
pp. 3466-3471 ◽  
Author(s):  
ZhiQian Wang ◽  
NianDong Jiao ◽  
Steve Tung ◽  
ZaiLi Dong
Keyword(s):  
Atomic Force Microscopy ◽  
Silicon Oxide ◽  
Oxide Surfaces ◽  
Force Microscopy ◽  
Atomic Force

Simulated and experimental force spectroscopy of lysozyme on silica

2018 ◽  
Vol 20 (29) ◽  
pp. 19595-19605 ◽  
Author(s):  
Nils Hildebrand ◽  
Gang Wei ◽  
Susan Köppen ◽  
Lucio Colombi Ciacchi
Keyword(s):  
Hydrogen Bond ◽  
Atomic Force Microscopy ◽  
Protein Stability ◽  
Force Spectroscopy ◽  
Atomic Scale ◽  
Oxide Surfaces ◽  
Force Microscopy ◽  
Atomic Force ◽  
Scale Models ◽  
Hydrogen Bond Patterns

Force-distance curves of proteins detaching from oxide surfaces measured by atomic force microscopy are interpreted with atomic-scale models which reveal the significance of disulfide and hydrogen bond patterns on the protein stability.

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