Lateral size effects on cells in ferroelectric films

1995 ◽  
Vol 51 (23) ◽  
pp. 17235-17238 ◽  
Author(s):  
Y. G. Wang ◽  
W. L. Zhong ◽  
P. L. Zhang
Keyword(s):  
Size Effects ◽  
Lateral Size ◽  
Ferroelectric Films

scholarly journals Size effects of graphene nanoplatelets on the properties of high-density polyethylene nanocomposites: morphological, thermal, electrical, and mechanical characterization

2020 ◽  
Vol 11 ◽  
pp. 167-179 ◽  
Author(s):  
Tuba Evgin ◽  
Alpaslan Turgut ◽  
Georges Hamaoui ◽  
Zdenko Spitalsky ◽  
Nicolas Horny ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Percolation Threshold ◽  
Size Effects ◽  
High Density Polyethylene ◽  
Considerable Effect ◽  
Graphene Nanoplatelets ◽  
High Density ◽  
Filler Concentration ◽  
Lateral Size ◽  
Sem Images

High-density polyethylene (HDPE)-based nanocomposites incorporating three different types of graphene nanoplatelets (GnPs) were fabricated to investigate the size effects of GnPs in terms of both lateral size and thickness on the morphological, thermal, electrical, and mechanical properties. The results show that the inclusion of GnPs enhance the thermal, electrical, and mechanical properties of HDPE-based nanocomposites regardless of GnP size. Nevertheless, the most significant enhancement of the thermal and electrical conductivities and the lowest electrical percolation threshold were achieved with GnPs of a larger lateral size. This could have been attributed to the fact that the GnPs of larger lateral size exhibited a better dispersion in HDPE and formed conductive pathways easily observable in scanning electron microscope (SEM) images. Our results show that the lateral size of GnPs was a more regulating factor for the above-mentioned nanocomposite properties compared to their thickness. For a given lateral size, thinner GnPs showed significantly higher electrical conductivity and a lower percolation threshold than thicker ones. On the other hand, in terms of thermal conductivity, a remarkable amount of enhancement was observed only above a certain filler concentration. The results demonstrate that GnPs with smaller lateral size and larger thickness lead to lower enhancement of the samples’ mechanical properties due to poorer dispersion compared to the others. In addition, the size of the GnPs had no considerable effect on the melting and crystallization properties of the HDPE/GnP nanocomposites.

scholarly journals Lateral size effects on domain structure in epitaxial PbTiO3 thin films

2006 ◽  
Vol 100 (5) ◽  
pp. 051615 ◽  
Author(s):  
Kilho Lee ◽  
Hyunjung Yi ◽  
Wang-Hyun Park ◽  
Yong Kwan Kim ◽  
Sunggi Baik
Keyword(s):  
Thin Films ◽  
Domain Structure ◽  
Size Effects ◽  
Lateral Size

scholarly journals Photoluminescence and photoluminescence excitation studies of lateral size effects inZn1−xMnxSe/ZnSequantum disk samples of different radii

1998 ◽  
Vol 57 (12) ◽  
pp. 7114-7118 ◽  
Author(s):  
P. J. Klar ◽  
D. Wolverson ◽  
J. J. Davies ◽  
W. Heimbrodt ◽  
M. Happ ◽  
...  
Keyword(s):  
Size Effects ◽  
Lateral Size ◽  
Photoluminescence Excitation

scholarly journals Lateral Size Effects of Two-dimensional IrO2 Nanosheets towards the Oxygen Evolution Reaction Activity

2017 ◽  
Vol 85 (12) ◽  
pp. 779-783 ◽  
Author(s):  
Daisuke TAKIMOTO ◽  
Yusuke AYATO ◽  
Dai MOCHIZUKI ◽  
Wataru SUGIMOTO
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Size Effects ◽  
Lateral Size ◽  
Two Dimensional

Supression of size effects in ferroelectric films

2000 ◽  
Vol 28 (1-4) ◽  
pp. 175-192 ◽  
Author(s):  
Seshu B. Desu ◽  
Orest G. Vendik
Keyword(s):  
Size Effects ◽  
Ferroelectric Films

Surface and size effects on ferroelectric films with domain structures

1995 ◽  
Vol 51 (8) ◽  
pp. 5311-5314 ◽  
Author(s):  
Y. G. Wang ◽  
W. L. Zhong ◽  
P. L. Zhang
Keyword(s):  
Size Effects ◽  
Ferroelectric Films ◽  
Domain Structures

Size effects on phase transitions in ferroelectric films

1994 ◽  
Vol 189 (1-2) ◽  
pp. 121-126 ◽  
Author(s):  
W.L. Zhong ◽  
Y.G. Wang ◽  
P.L. Zhang
Keyword(s):  
Phase Transitions ◽  
Size Effects ◽  
Ferroelectric Films

Retention properties of fully integrated (Bi,La)4Ti3O12 capacitors and their lateral size effects

2005 ◽  
Vol 86 (2) ◽  
pp. 022903 ◽  
Author(s):  
D. J. Kim ◽  
J. Y. Jo ◽  
Y. W. So ◽  
B. S. Kang ◽  
T. W. Noh ◽  
...  
Keyword(s):  
Size Effects ◽  
Lateral Size ◽  
Fully Integrated

Size Effects on Polarization in Epitaxial Ferroelectric Films and the Concept of Ferroelectric Tunnel Junctions Including First Results

2001 ◽  
Vol 688 ◽  
Author(s):  
H. Kohlstedt ◽  
N. A. Pertsev ◽  
R. Waser
Keyword(s):  
Size Effect ◽  
Size Effects ◽  
Field Effect ◽  
Misfit Strain ◽  
Misfit Dislocations ◽  
Spatial Correlations ◽  
Static Properties ◽  
Ferroelectric Films ◽  
First Results ◽  
Film Substrate

AbstractExtrinsic and intrinsic size effects on the spontaneous polarization of epitaxial ferroelectric films are discussed. The extrinsic effect of electrostatic origin is attributed to the presence of nonferroelectric subsurface layers in the film. Theoretical studies of this depolarizing-field effect are reviewed. It is concluded that, for perovskite ferroelectrics sandwiched between electrodes with a perovskite structure, the depolarizing-field effect on the static properties should be negligible. The extrinsic size effect is also attributed to the thickness dependence of the film in-plane lattice strain Sm, which is due to the generation of misfit dislocations in the epitaxy. Variation of the film polarization with the misfit strain Sm is described by a nonlinear thermodynamic theory, which allows for the mechanical film/substrate interaction. The intrinsic effect of the film surfaces, which is associated with spatial correlations of the ferroelectric polarization, is simultaneously taken into account via the concept of extrapolation length δ. It is shown that, in films grown on compressive substrates (Sm < 0), the strain-induced increase of the mean polarization prevails over the negative intrinsic size effect (δ > 0). As a result, well below the transition temperature, ferroelectricity may be present even in nanometer-thick epitaxial layers. Motivated by this result, we propose the concept of ferroelectric tunnel junction. First results on tunnelling through ultrathin barriers of perovskite ferroelectrics are presented.

Size effects in nanostructured ferroelectric films

2007 ◽  
Vol 33 (3) ◽  
pp. 231-234 ◽  
Author(s):  
O. G. Vendik ◽  
N. Yu. Medvedeva ◽  
S. P. Zubko
Keyword(s):  
Size Effects ◽  
Ferroelectric Films
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