Results 241 to 250 of about 5,616 (276)

Greener Synthesis of CZTS: Structural, KPFM studies

Materials Today: Proceedings, 2018
Abstract Copper Zinc Tin sulfide (CZTS) has shown promising performance as an absorber semiconductor for solar cell devices. Due to its multicomponent nature, low cost synthesis method results in presence of secondary phases, which is nagging issue it affects optoelectronic properties.
N. Kumari, D. Varandani, B.R. Mehta
openaire   +1 more source

Artifacts in KPFM in FM, AM and Heterodyne AM Modes

Key Engineering Materials, 2014
In this paper, the crosstalk in potential measurements caused by the topographic feedback and the resonance frequency in Kelvin probe force microscopy (KPFM) was investigated in frequency modulation (FM), amplitude modulation (AM) and heterodyne amplitude modulation (heterodyne AM) modes.
Zong Min Ma, Ji Liang Mu, Jun Tang, Hui Xue, Huan Zhang, Chen Yang Xue, Jun Liu, Yan Jun Li   +7 more
openaire   +1 more source

Capacitive Crosstalk in AM-Mode KPFM

2011
In Kelvin probe force microscopes based on electrostatic tip excitation, a nonnegligible capacitive crosstalk occurs between the electrostatic probe excitation signal and the probe deflection output signal. In atomic force microscopy setups where a self-oscillation force feedback loop is used, the parasitic coupling may also superpose onto the ...
Diesinger, H., Deresmes, D., Melin, Thierry   +2 more
openaire   +2 more sources

KPFM of Nanostructured Electrochemical Sensors

2018
Integrating sensor arrays with microelectronic devices enables applications such as disease diagnostics and environmental monitoring. The most advanced chemical sensor concepts, compatible with integrated circuits, comprise a semiconductor with a nanostructured sensing area that can be modified to be more selective and sensitive to specific analytes ...
Alex Henning, Yossi Rosenwaks
openaire   +1 more source

Nanoscale mapping using AFM and KPFM in Er/Yb:BaTiO3 films to photonics applications

Latin America Optics and Photonics (LAOP) Conference 2022, 2022
The functionalization of advanced materials for photonics devices is dependent on nanoscale mapping. Technique AFM and KPFM were used to investigate the surface evolution and quantitative information is discussed.
J. L. Clabel H., E. Marega
openaire   +1 more source

KPFM and PFM of Biological Systems

2011
Surface potentials and electrostatic interactions in biological systems are key elements of cellular regulation and interaction. Examples include cardiac and muscular activity, voltage-gated ion channels, protein folding and assembly, and electroactive cells and electrotransduction.
B. J. Rodriguez, S. V. Kalinin
openaire   +1 more source

Charge state of steps on anatase TiO2(1 0 1) at 78 K by AFM/KPFM

Applied Surface Science, 2023
Sota Odani
exaly   +2 more sources

High resolution subsurface imaging using resonance-enhanced detection in 2nd-harmonic KPFM

Nanotechnology, 2018
Second harmonic Kelvin probe force microscopy is a robust mechanism for subsurface imaging at the nanoscale. Here we exploit resonance-enhanced detection as a way to boost the subsurface contrast with higher force sensitivity using lower bias voltages, in comparison to the traditional off-resonance case.
Maria J Cadena, Ronald G Reifenberger, Arvind Raman   +2 more
openaire   +2 more sources

Probing Local Surface Potential of Quasi‐One‐Dimensional Systems: A KPFM Study of P3HT Nanofibers

Advanced Functional Materials, 2008
AbstractA new model for the quantitative analysis of Kelvin Probe Force Microscopy (KPFM) measurements of quasi‐one‐dimensional systems is presented. It is applied to precisely determine the local surface potential (SP) of semiconducting nanofibers of poly(3‐hexylthiophene) (P3HT) self‐assembled on various flat substrates.
Andrea Liscio, Vincenzo Palermo
exaly   +3 more sources

Imaging Static Charge Distributions: A Comprehensive KPFM Theory

2018
We analyze Kelvin probe force microscopy (KPFM) for tip-sample systems that contain static charges by presenting a rigorous derivation for the respective KPFM signal in all common KPFM modes, namely amplitude modulation, frequency modulation, or heterodyne detection in the static, open-loop or closed-loop variant.
Philipp Rahe, Hagen Söngen
openaire   +1 more source