A new method of biosensing with 1μl of Escherichia coli suspension using atomic force microscopy

2005 ◽  
Vol 345 (1) ◽  
pp. 116-121 ◽  
Author(s):  
Satoshi Tanaka ◽  
Hiroaki Sugasawa ◽  
Takashi Morii ◽  
Takao Okada ◽  
Masanori Abe ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Atomic Force Microscopy ◽  
New Method ◽  
Force Microscopy ◽  
Atomic Force

Membranolytic Effects of KT2 on Gram-Negative Escherichia coli Evaluated by Atomic Force Microscopy

2019 ◽  
Vol 55 (5) ◽  
pp. 495-505
Author(s):  
T. Theansungnoen ◽  
N. Jangpromma ◽  
P. Anwised ◽  
S. Daduang ◽  
Y. Fukumori ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Atomic Force Microscopy ◽  
Gram Negative ◽  
Force Microscopy ◽  
Atomic Force

Native Escherichia coli OmpF porin surfaces probed by atomic force microscopy

Science ◽  
1995 ◽  
Vol 268 (5207) ◽  
pp. 92-94 ◽  
Author(s):  
F. Schabert ◽  
C Henn ◽  
A Engel
Keyword(s):  
Escherichia Coli ◽  
Atomic Force Microscopy ◽  
Ompf Porin ◽  
Force Microscopy ◽  
Atomic Force

Atomic Force Microscopy of Escherichia coli FoF1-ATPase in Reconstituted Membranes

1997 ◽  
Vol 834 (1 Na/K-ATPase a) ◽  
pp. 149-152 ◽  
Author(s):  
KUNIO TAKEYASU ◽  
HIROSHI OMOTE ◽  
SAJU NETTIKADAN ◽  
FUYUKI TOKUMASU ◽  
ATSUKO IWAMOTO-KIHARA ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force ◽  
Reconstituted Membranes ◽  
Fof1 Atpase

AFM Interaction Forces of Lubricity Materials Surface

2012 ◽  
Vol 528 ◽  
pp. 95-98
Author(s):  
Xue Feng Li ◽  
Chu Wu ◽  
Shao Xian Peng ◽  
Jian Li
Keyword(s):  
Atomic Force Microscopy ◽  
Friction Force ◽  
Sliding Friction ◽  
Static Friction ◽  
Adhesive Force ◽  
New Method ◽  
Interaction Forces ◽  
Scanning Angle ◽  
Force Microscopy ◽  
Atomic Force

Micro interaction forces of lubricity surface of silicon and mica were studied using atomic force microscopy (AFM). From different scanning angle and bisection distance of the AFM, a new method of measuring micro static friction of lubricity surface materials was investigated. Results show that the micro coefficients of static and sliding friction of mica are less than the silicon, but the adhesive force is bigger. The mechanism of friction force of the two lubricity materials was discussed.

scholarly journals Atomic Force Microscopy Study of the Effect of Antimicrobial Peptides on the Cell Envelope of Escherichia coli

2005 ◽  
Vol 49 (10) ◽  
pp. 4085-4092 ◽  
Author(s):  
M. Meincken ◽  
D. L. Holroyd ◽  
M. Rautenbach
Keyword(s):  
Escherichia Coli ◽  
Atomic Force Microscopy ◽  
Morphological Changes ◽  
Cell Envelope ◽  
Microscopy Study ◽  
Target Cells ◽  
Force Microscopy ◽  
E Coli ◽  
Atomic Force ◽  
Before And After

ABSTRACT The influences of the antibacterial magainin 2 and PGLa from the African clawed frog (Xenopus laevis) and the hemolytic bee venom melittin on Escherichia coli as the target cell were studied by atomic force microscopy (AFM). Nanometer-scale images of the effects of the peptides on this gram-negative bacterium's cell envelope were obtained in situ without the use of fixing agents. These high-resolution AFM images of the surviving and intact target cells before and after peptide treatment showed distinct changes in cell envelope morphology as a consequence of peptide action. Although all three peptides are lytic to E. coli, it is clear from this AFM study that each peptide causes distinct morphological changes in the outer membrane and in some cases the inner membrane, probably as a consequence of different mechanisms of action.

scholarly journals A New Method for Obtaining Model-Free Viscoelastic Material Properties from Atomic Force Microscopy Experiments Using Discrete Integral Transform Techniques

2021 ◽  
Author(s):  
Berkin Uluutku ◽  
Enrique A López-Guerra ◽  
Santiago D Solares
Keyword(s):  
Atomic Force Microscopy ◽  
Integral Transform ◽  
Material Behavior ◽  
New Method ◽  
General Strategy ◽  
Force Microscopy ◽  
Viscoelastic Models ◽  
Model Free ◽  
Atomic Force ◽  
Z Domain

Viscoelastic characterization of materials at the micro- and nanoscales is commonly performed with the aid of force-distance relationships acquired using atomic force microscopy (AFM). The general strategy for existing methods is to fit the observed material behavior to specific viscoelastic models, such as generalized viscoelastic models or power-law rheology models, among others.  Here we propose a new method to invert and obtain the viscoelastic properties of a material through the use of the Z-transform, without using a model.  We present the rheological viscoelastic relations in their classical derivation and their Z-domain correspondence.  We illustrate the proposed technique on a model experiment involving a traditional ramp-shaped force-distance AFM curve, demonstrating good agreement between the viscoelastic characteristics extracted from the simulated experiment and the theoretical expectations. We also provide a path for calculating standard viscoelastic responses from the extracted material characteristics.  The new technique based on the Z-transform is complementary to previous model-based viscoelastic analyses and can be advantageous with respect to Fourier techniques due to its generality.  Additionally, it can handle the unbounded inputs traditionally used to acquire force-distance relationships in AFM, such as “ramp” functions, in which the cantilever position is displaced linearly with time for a finite period of time.

scholarly journals A new method to deal with biomacromolecularimage observed by atomic force microscopy

2011 ◽  
Vol 60 (9) ◽  
pp. 098703
Author(s):  
Ji Chao ◽  
Zhang Ling-Yun ◽  
Dou Shuo-Xing ◽  
Wang Peng-Ye
Keyword(s):  
Atomic Force Microscopy ◽  
New Method ◽  
Force Microscopy ◽  
Atomic Force
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