Results 261 to 270 of about 3,573 (286)

Towards nanoscale electrical measurements in liquid by advanced KPFM techniques: a review

Reports on Progress in Physics, 2018
Abstract Fundamental mechanisms of energy storage, corrosion, sensing, and multiple biological functionalities are directly coupled to electrical processes and ionic dynamics at solid–liquid interfaces. In many cases, these processes are spatially inhomogeneous taking place at grain boundaries, step edges, point defects, ion channels,
Liam Collins, Jason I Kilpatrick, Sergei V Kalinin   +2 more
exaly   +4 more sources

Contact electrification and charge decay on polyester fibres: A KPFM study

Journal of Electrostatics, 2018
Abstract Surface contact electrification experiments have been performed on insulating polyester fibres in contact with a conductive fibre using biased atomic force microscopy tips. With positive tip bias, charge spots have been deposited in a reproducible manner.
Jun Yin, Bernard Nystén
exaly   +3 more sources

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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

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

Applied Surface Science, 2023
Jiuyan Wei, Sota Odani, Yasuhiro Sugawara   +2 more
exaly   +2 more sources

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

Applications of KPFM-Based Approaches for Surface Potential and Electrochemical Measurements in Liquid

Springer Series in Surface Sciences, 2018
Kelvin probe force microscopy (KPFM) has been widely used to map nanoscale surface potentials of materials in ambient and ultra-high vacuum environments. However, to study and ultimately understand charge-related processes, e.g., in biological systems or to further improve energy storage devices such as electrochemical batteries, nanoscale surface ...
Liam Collins, Stefan A L Weber, Brian J Rodríguez   +2 more
exaly   +2 more sources

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

In Situ KPFM Imaging of Local Photovoltaic Characteristics of Structured Organic Photovoltaic Devices

ACS Applied Materials & Interfaces, 2014
Here, we discuss the local photovoltaic characteristics of a structured bulk heterojunction, organic photovoltaic devices fabricated with a liquid carbazole, and a fullerene derivative based on analysis by scanning kelvin probe force microscopy (KPFM).
Satoshi, Watanabe, Yasumasa, Fukuchi, Masako, Fukasawa, Takafumi, Sassa, Atsushi, Kimoto, Yusuke, Tajima, Masanobu, Uchiyama, Takashi, Yamashita, Mutsuyoshi, Matsumoto, Tetsuya, Aoyama   +9 more
openaire   +2 more sources

Interpretation of KPFM Data with the Weight Function for Charges

2018
The KPFM signal for systems containing local charges can be expressed as a weighted sum over all local charges. The weight function for charges quantifies the contribution of each charge, depending on its position. In this chapter, we evaluate the KPFM weight function for charges by analyzing several application-relevant model systems. The intention of
Hagen Söngen, Philipp Rahe, Ralf Bechstein, Angelika Kühnle   +3 more
openaire   +1 more source