Results 51 to 60 of about 770,384 (397)

Atomic Force Microscopy of height fluctuations of fibroblast cells [PDF]

open access: yes, 2002
We investigated the nanometer scale height fluctuations of 3T3 fibroblast cells with the atomic force microscope (AFM) under physiological conditions. Correlation between these fluctuations and lateral cellular motility can be observed.
A. Czirók   +31 more
core   +2 more sources

CO Tip Functionalization Inverts Atomic Force Microscopy Contrast via Short-Range Electrostatic Forces [PDF]

open access: yes, 2014
We investigated insulating Cu$_2$N islands grown on Cu(100) by means of combined scanning tunneling microscopy and atomic force microscopy with two vastly different tips: a bare metal tip and a CO-terminated tip. We use scanning tunneling microscopy data as proposed by Choi et al. [T.
arxiv   +1 more source

Phase imaging with intermodulation atomic force microscopy

open access: yes, 2009
Intermodulation atomic force microscopy (IMAFM) is a dynamic mode of atomic force microscopy (AFM) with two-tone excitation. The oscillating AFM cantilever in close proximity to a surface experiences the nonlinear tip-sample force which mixes the drive ...
Arndt C. von Bieren   +22 more
core   +1 more source

Models for quantitative charge imaging by atomic force microscopy [PDF]

open access: yes, 2001
Two models are presented for quantitative charge imaging with an atomic-force microscope. The first is appropriate for noncontact mode and the second for intermittent contact (tapping) mode imaging.
Atwater, Harry A.   +3 more
core   +1 more source

Real-space and real-time dynamics of CRISPR-Cas9 visualized by high-speed atomic force microscopy

open access: yesNature Communications, 2017
The CRISPR-associated endonuclease Cas9 binds to a guide RNA and cleaves double-stranded DNA with a sequence complementary to the RNA guide. The Cas9–RNA system has been harnessed for numerous applications, such as genome editing.
Mikihiro Shibata   +6 more
semanticscholar   +1 more source

Charging of single Si nanocrystals by atomic force microscopy [PDF]

open access: yes, 2001
Conducting-tip atomic force microscopy (AFM) has been used to electronically probe silicon nanocrystals on an insulating substrate. The nanocrystal samples were produced by aerosol techniques and size classified; nanocrystal size can be controlled in the
Atwater, H. A.   +5 more
core   +1 more source

Atomic Force Microscopy of Phytosterol Based Edible Oleogels

open access: yesGels, 2023
This work reviews the use of atomic force microscopy (AFM) as a tool to investigate oleogels of edible triglyceride oils. Specific attention is given to those oleogels based on phytosterols and their esters, a class of material the authors have studied ...
Andrew B. Matheson   +3 more
doaj   +1 more source

Gamble mode: Resonance contact mode in atomic force microscopy [PDF]

open access: yes, 1996
Active noise reduction has been accomplished in atomic force microscopy by applying a high frequency, low amplitude vibration to the cantilever while it is in contact with a surface.
Baldeschwieler, J. D.   +3 more
core   +1 more source

Advances in atomic force microscopy for single-cell analysis

open access: yesNano Reseach, 2018
Single-cell analysis has been considered as a promising way to uncover the underlying mechanisms guiding the mysteries of life activities, which considerably complements traditional ensemble assays and yields novel insights into cell biology.
Mi Li, N. Xi, Yuechao Wang, Lianqing Liu
semanticscholar   +1 more source

Force-gradient sensitive Kelvin probe force microscopy by dissipative electrostatic force modulation [PDF]

open access: yesAppl.Phys.Lett. 110, 163103 (2017), 2017
We report a Kelvin probe force microscopy (KPFM) implementation using the dissipation signal of a frequency modulation atomic force microscopy that is capable of detecting the gradient of electrostatic force rather than electrostatic force. It features a simple implementation and faster scanning as it requires no low frequency modulation.
arxiv   +1 more source

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