Atomic Force Microscopic Observation of Random Molecular Arrangement in Dialkyl Guanidinium Monolayer

1996 ◽  
Vol 25 (10) ◽  
pp. 857-858 ◽  
Author(s):  
Yushi Oishi ◽  
Takayuki Kato ◽  
Miyuki Kuramori ◽  
Kazuaki Suehiro ◽  
Katsuhiko Ariga ◽  
...  
Keyword(s):  
Microscopic Observation ◽  
Molecular Arrangement ◽  
Atomic Force

Analysis on the Micro Surface Morphology of Aged Oil-Paper Used in Power Transformer

2013 ◽  
Vol 860-863 ◽  
pp. 894-898
Author(s):  
Chao Tang ◽  
Sheng Li Dai ◽  
Jiao Li
Keyword(s):  
Surface Roughness ◽  
Surface Morphology ◽  
Power Transformer ◽  
Roughness Parameter ◽  
Fiber Surface ◽  
Thermal Ageing ◽  
Molecular Arrangement ◽  
Atomic Force ◽  
Roughness Analysis ◽  
Mesh Structures

In order to analyze the ageing mechanism of oil-paper, the Atomic Force Microscope (AFM), which is one of the important instruments in nanometer area, was used in this paper for the analysis of the micro surface morphology, and a 3-D surface roughness analysis on the AFM image was presented. The AFM figures indicates that the molecular arrangement of the initial cellulose paper is close and ordered, some of the hexagonal mesh structures of the D-glucopyranose units were broken down after 100 days accelerated thermal ageing. The roughness analysis indicates that he fiber surface roughness parameter Sa increases with the deepening of ageing degree. Special attention should be paid on the increase in the surface roughness of insulation paper, as it will aggravate the oil streaming electrification when the paper is applied to the power transformers.

scholarly journals High-Speed Atomic Force Microscopic Observation of ATP-Dependent Rotation of the AAA+ Chaperone p97

Structure ◽  
2013 ◽  
Vol 21 (11) ◽  
pp. 1992-2002 ◽  
Author(s):  
Kentaro Noi ◽  
Daisuke Yamamoto ◽  
Shingo Nishikori ◽  
Ken-ichi Arita-Morioka ◽  
Takayuki Kato ◽  
...  
Keyword(s):  
Microscopic Observation ◽  
High Speed ◽  
Atomic Force

Self-organization of phthalocyanines on Al2O3 (1120) in aligned and ordered films

2004 ◽  
Vol 19 (7) ◽  
pp. 2061-2067 ◽  
Author(s):  
E. Barrena ◽  
J.O. Ossó ◽  
F. Schreiber ◽  
M. Garriga ◽  
M.I. Alonso ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Self Organization ◽  
X Ray Diffraction ◽  
Direction Parallel ◽  
Force Microscopy ◽  
Molecular Arrangement ◽  
Atomic Force ◽  
Organization Process ◽  
Microscopy Images ◽  
Molecular Stacking

We studied the self-organization process of F16CuPc films (20–30 ML) on stepped Al2O3 (1120) substrates. X-ray diffraction measurements revealed a highly ordered layered structure with the molecules in a nearly upright configuration. The morphology, investigated by atomic force microscopy, consisted of long (several microns) and narrow (20–100 nm) needlelike terraces unidirectionally aligned along one of the main crystallographic directions of the Al2O3 (1120) surface. High resolution atomic force microscopy images revealed in-plane molecular order with the molecular stacking direction parallel to the needlelike terraces. Such anisotropic morphology is the result of a self-organization process of F16CuPc in elongated crystallites driven to a preferential orientation by the interaction with the substrate. Spectroscopic ellipsometry showed that these films exhibit anisotropic optical properties correlated with the molecular arrangement.

Molecular Arrangement at Cleaved Single-Crystal Surface of Steraric Acid Observed by Atomic Force Microscope

1994 ◽  
Vol 33 (Part 1, No. 6B) ◽  
pp. 3768-3770 ◽  
Author(s):  
Masatoshi Fujii ◽  
Yasuhiro Fujihara ◽  
Satoshi Sugisawa ◽  
Kazuhiro Fukada ◽  
Tadashi Kato ◽  
...  
Keyword(s):  
Single Crystal ◽  
Atomic Force Microscope ◽  
Crystal Surface ◽  
Single Crystal Surface ◽  
Molecular Arrangement ◽  
Atomic Force

Microscopic observation of unworn siloxane-hydrogel soft contact lenses by atomic force microscopy

2006 ◽  
Vol 76B (2) ◽  
pp. 412-418 ◽  
Author(s):  
José M. González-Méijome ◽  
Antonio López-Alemany ◽  
José B. Almeida ◽  
Manuel A. Parafita ◽  
Miguel F. Refojo
Keyword(s):  
Atomic Force Microscopy ◽  
Microscopic Observation ◽  
Contact Lenses ◽  
Soft Contact ◽  
Force Microscopy ◽  
Soft Contact Lenses ◽  
Atomic Force

Characterization of Hydrophobic Forces for in Liquid Self-Assembly of Micron-Sized Functional Building Blocks

2011 ◽  
Vol 1299 ◽  
Author(s):  
M. R. Gullo ◽  
L. Jacot-Descombes ◽  
L. Aeschimann ◽  
J. Brugger
Keyword(s):  
Atomic Force Microscopy ◽  
Self Assembly ◽  
Hydrophobic Interactions ◽  
Numerical Study ◽  
Building Blocks ◽  
Dynamic Simulations ◽  
Hydrophobic Force ◽  
Force Microscopy ◽  
Molecular Arrangement ◽  
Atomic Force

ABSTRACTThis paper presents the experimental and numerical study of hydrophobic interaction forces at nanometer scale in the scope of engineering micron-sized building blocks for self-assembly in liquid. The hydrophobic force distance relation of carbon, Teflon and dodeca-thiols immersed in degassed and deionized water has been measured by atomic force microscopy. Carbon and dodeca-thiols showed comparable attractive and binding forces in the rage of pN/nm2. Teflon showed the weakest binding and no attractive force. Molecular dynamic simulations were performed to correlate the molecular arrangement of water molecules and the hydrophobic interactions measured by atomic force microscopy. The simulations showed a depletion zone of 2Å followed by a layered region of 8Å in the axis perpendicular to the hydrophobic surface.

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