Results 51 to 60 of about 4,697 (147)

Trapped charge driven degradation of perovskite solar cells

, 2016
Perovskite solar cells have shown fast deterioration during actual operation even with encapsulation, but its mechanism has been elusive. We found the fundamental mechanism for irreversible degradation of perovskite materials in which trapped charges ...
Ahn, Namyoung, Byun, Junseop, Choi, Mansoo, Jang, Min Seok, Kwak, Kwisung, Lee, Byung Yang, Lee, Jong-Kwon, Pikhitsa, Peter V., Yoon, Heetae   +8 more
core   +2 more sources

Probing the surface electrical properties of clay minerals with electrostatic force microscopy and kelvin probe force microscopy

Materials Research Express
Many surface processes of clay minerals require in-depth understanding of their surface electrical properties, such as surface charge density, surface potential distribution, etc In this paper, electrostatic force microscopy (EFM) and Kelvin probe force ...
Zonghua Qin, Xin Nie, Wenbin Yu, Shuguang Yang, Zongke Zhou, Shuqin Yang, Quan Wan   +6 more
doaj   +1 more source

Kelvin probe force microscopy of the nanoscale electrical surface potential barrier of metal/semiconductor interfaces in ambient atmosphere

Beilstein Journal of Nanotechnology, 2019
This study deals with the preparation and characterization of metallic nanoinclusions on the surface of semiconducting Bi2Se3 that could be used for an enhancement of the efficiency of thermoelectric materials.
Petr Knotek, Tomáš Plecháček, Jan Smolík, Petr Kutálek, Filip Dvořák, Milan Vlček, Jiří Navrátil, Čestmír Drašar   +7 more
doaj   +1 more source

Measurement of polarization effects in dual-phase ceria-based oxygen permeation membranes using Kelvin probe force microscopy

Beilstein Journal of Nanotechnology, 2021
In this study, a dual phase composite (CSO-FC2O) consisting of 60 vol % Ce0.8Sm0.2O1.9 as oxygen-conductive phase and 40 vol % FeCo2O4 as electron-conductive phase was synthesized.
Kerstin Neuhaus, Christina Schmidt, Liudmila Fischer, Wilhelm Albert Meulenberg, Ke Ran, Joachim Mayer, Stefan Baumann   +6 more
doaj   +1 more source

Electrical Response of Different Crystalline Microregions in Poly(vinylidene fluoride)

Nanomaterials
The crystal structure has a great influence on the dielectric and piezoelectric performance of poly(vinylidene fluoride) (PVDF). In this work, we prepared PVDF films with two typical crystalline phases (α and β).
Mengyue Su, Jun Zhou, Yuqing Chen, Yilong Wang, Gan Jin, Haiyang Wang, Jiacheng Zhou, Xiaoyue Pang, Zepeng Lv, Kai Wu   +9 more
doaj   +1 more source

Defects in oxide surfaces studied by atomic force and scanning tunneling microscopy

Beilstein Journal of Nanotechnology, 2011
Surfaces of thin oxide films were investigated by means of a dual mode NC-AFM/STM. Apart from imaging the surface termination by NC-AFM with atomic resolution, point defects in magnesium oxide on Ag(001) and line defects in aluminum oxide on NiAl(110 ...
Thomas König, Georg H. Simon, Lars Heinke, Leonid Lichtenstein, Markus Heyde   +4 more
doaj   +1 more source

Changes in lipid membranes may trigger amyloid toxicity in Alzheimer's disease. [PDF]

PLoS ONE, 2017
Amyloid-beta peptides (Aβ), implicated in Alzheimer's disease (AD), interact with the cellular membrane and induce amyloid toxicity. The composition of cellular membranes changes in aging and AD.
Elizabeth Drolle, Alexander Negoda, Keely Hammond, Evgeny Pavlov, Zoya Leonenko   +4 more
doaj   +1 more source

Surface-enhanced Raman scattering of graphene caused by self-induced nanogating by GaN nanowire array

, 2017
A constant height of gallium nitride (GaN) nanowires with graphene deposited on them is shown to have a strong enhancement of Raman scattering, whilst variable height nanowires fail to give such an enhancement.
Bożek, Rafał, Drabińska, Aneta, Grzonka, Justyna, Kamińska, Maria, Kaźmierczak, Piotr, Kierdaszuk, Jakub, Klosek, Kamil, Krajewska, Aleksandra, Sobanska, Marta, Wołoś, Agnieszka, Wysmołek, Andrzej, Zytkiewicz, Zbigniew R.   +11 more
core   +1 more source

Changes in plasma membrane surface potential of PC12 cells as measured by Kelvin probe force microscopy. [PDF]

PLoS ONE, 2012
The plasma membrane of a cell not only works as a physical barrier but also mediates the signal relay between the extracellular milieu and the cell interior.
Chia-Chang Tsai, Hui-Hsing Hung, Chien-Pang Liu, Yit-Tsong Chen, Chien-Yuan Pan   +4 more
doaj   +1 more source

The Theory of Scanning Quantum Dot Microscopy

, 2019
Electrostatic forces are among the most common interactions in nature and omnipresent at the nanoscale. Scanning probe methods represent a formidable approach to study these interactions locally.
Tautz, F. Stefan, Wagner, Christian
core   +1 more source