Zobrazeno 1 - 10
of 162
pro vyhledávání: '"Sergei Magonov"'
Autor:
Sergei Magonov, John Alexander
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 2, Iss 1, Pp 15-27 (2011)
We demonstrate that single-pass Kelvin force microscopy (KFM) and capacitance gradient (dC/dZ) measurements with force gradient detection of tip–sample electrostatic interactions can be performed in the intermittent contact regime in different envi
Externí odkaz:
https://doaj.org/article/2aaa025b543b4d1f9bd269cc257fbdff
Autor:
Shijie Wu, Sergei Magonov
Publikováno v:
MRS Advances. 3:2705-2712
Fast imaging in Atomic Force Microscopy enhances the capability of studying phase transitions and surface properties of materials at variable temperatures. This is demonstrated by measurements of several polymers [poly(diethylsiloxane), low-density p
Publikováno v:
MRS Advances. 3:595-601
The main functions of the dynamic cantilever calibrator (DCC), which are related to characterization of AFM probes and instruments, are demonstrated on a variety of probes. The resonant frequency, Q-factor and spring constant of the rectangular and V
Autor:
Shijie Wu, Sergei Magonov
Publikováno v:
MRS Advances. 3:587-593
Environmental atomic force microscopy (AFM) study of brush macromolecules, polymer blends and bitumen was performed with regular and Quick Scan imaging. Condensation of different vapors on sample surface has induced swelling of hydrophilic domains th
Publikováno v:
IFAC-PapersOnLine. 50:10882-10888
We present a new digital design of Q-control, i.e. controllable change of cantilever quality factor, targeted for digital implementation at an FPGA. The designed Q-controller changes the amplitude and phase of cantilever excitation based on amplitude
Autor:
Sergei Magonov, Sergey Belikov
Publikováno v:
IFAC-PapersOnLine. 50:8654-8661
Dynamic modes of an Atomic Force Microscope (AFM) can be modeled as a cantilever beam excited near one or more resonant frequencies described by the Euler-Bernoulli PDE with additional damping and controlled excitation. The PDE is equivalent to a ser
Autor:
Sergey Belikov, Sergei Magonov
Publikováno v:
ACC
Asymptotic AFM amplitude-phase dynamics is a powerful modeling tool for the development of AFM control systems and applications. We explain the model and demonstrate simple practical examples that can be easily programmed and analyzed using simulatio
Publikováno v:
MRS Advances. 1:2763-2768
Recent advances in studies of local mechanical properties of polymers with different atomic force microscopy techniques (contact, Hybrid and amplitude modulation modes) are described in interplay between experiment and theory. Analysis of force curve
Publikováno v:
MRS Advances. 1:1859-1864
Compositional imaging of several immiscible polymer blends was examined with the combination of AFM-based mechanical and electric modes with chemically-specific Raman mapping. Results showed that these methods substantially complement each other in c
Publikováno v:
MRS Advances. 1:1853-1858
The set of oscillatory resonance AFM modes is expanded with frequency modulation mode and frequency imaging in amplitude modulation mode. The backgrounds of these modes are discussed and their capabilities are compared on the practical examples. The