Density Fluctuations and Phase Transitions of Ferroelectric Polymer Nanowires

Small ◽  
2010 ◽  
Vol 6 (16) ◽  
pp. 1822-1826 ◽  
Author(s):  
Anatoli Serghei ◽  
Jodie L. Lutkenhaus ◽  
Daniel F. Miranda ◽  
Kathleen McEnnis ◽  
Friedrich Kremer ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Density Fluctuations ◽  
Ferroelectric Polymer ◽  
Polymer Nanowires

Confinement Induced Preferential Orientation of Crystals and Enhancement of Properties in Ferroelectric Polymer Nanowires

2013 ◽  
Vol 2 (6) ◽  
pp. 535-538 ◽  
Author(s):  
Yangjiang Wu ◽  
Qingzhao Gu ◽  
Guangzhu Ding ◽  
Fuqiang Tong ◽  
Zhijun Hu ◽  
...  
Keyword(s):  
Preferential Orientation ◽  
Ferroelectric Polymer ◽  
Polymer Nanowires

Phase transitions in ferroelectric polymer films

2012 ◽  
Vol 76 (7) ◽  
pp. 747-748
Author(s):  
A. A. Plakseev ◽  
E. P. Kharitonova ◽  
K. A. Verkhovskaya
Keyword(s):  
Phase Transitions ◽  
Polymer Films ◽  
Ferroelectric Polymer

scholarly journals Observation of Confinement‐Induced Self‐Poling Effects in Ferroelectric Polymer Nanowires Grown by Template Wetting

2016 ◽  
Vol 301 (9) ◽  
pp. 1016-1025 ◽  
Author(s):  
Richard A. Whiter ◽  
Yonatan Calahorra ◽  
Canlin Ou ◽  
Sohini Kar‐Narayan
Keyword(s):  
Ferroelectric Polymer ◽  
Template Wetting ◽  
Polymer Nanowires

scholarly journals Assembly of Close‐Packed Ferroelectric Polymer Nanowires via Interface‐Epitaxy with ReS 2

2021 ◽  
pp. 2100214
Author(s):  
Dawei Li ◽  
Shuo Sun ◽  
Kun Wang ◽  
Zahra Ahmadi ◽  
Jeffrey E. Shield ◽  
...  
Keyword(s):  
Ferroelectric Polymer ◽  
Polymer Nanowires

scholarly journals Effect of density fluctuations on gravitational wave production in first-order phase transitions

2021 ◽  
Vol 2021 (12) ◽  
pp. 019
Author(s):  
Ryusuke Jinno ◽  
Thomas Konstandin ◽  
Henrique Rubira ◽  
Jorinde van de Vis
Keyword(s):  
Phase Transitions ◽  
Gravitational Wave ◽  
Gravitational Waves ◽  
Early Universe ◽  
Bubble Size ◽  
Large Scale ◽  
Density Fluctuations ◽  
First Order ◽  
Density Perturbations ◽  
First Order Phase

Abstract We study the effect of density perturbations on the process of first-order phase transitions and gravitational wave production in the early Universe. We are mainly interested in how the distribution of nucleated bubbles is affected by fluctuations in the local temperature. We find that large-scale density fluctuations (H * < k * < β) result in a larger effective bubble size at the time of collision, enhancing the produced amplitude of gravitational waves. The amplitude of the density fluctuations necessary for this enhancement is 𝒫ζ (k *) ≳ (β/H *)-2, and therefore the gravitational wave signal from first-order phase transitions with relatively large β/H * can be significantly enhanced by this mechanism even for fluctuations with moderate amplitudes.

scholarly journals Mechanical Energy Harvesting Performance of Ferroelectric Polymer Nanowires Grown via Template-Wetting

2018 ◽  
Vol 6 (5) ◽  
pp. 928-934 ◽  
Author(s):  
Richard A. Whiter ◽  
Chess Boughey ◽  
Michael Smith ◽  
Sohini Kar-Narayan
Keyword(s):  
Energy Harvesting ◽  
Mechanical Energy ◽  
Ferroelectric Polymer ◽  
Template Wetting ◽  
Polymer Nanowires

Phase transitions in ultrathin ferroelectric polymer films and nanocrystals

2010 ◽  
Vol 74 (5) ◽  
pp. 634-636
Author(s):  
K. A. Verkhovskaya ◽  
A. A. Plakseev ◽  
A. M. Lotonov
Keyword(s):  
Phase Transitions ◽  
Polymer Films ◽  
Ferroelectric Polymer

Electron Microscopy of Graphite Intercalation Compounds

1982 ◽  
Vol 40 ◽  
pp. 544-545
Author(s):  
G. Timp ◽  
L. Salamanca-Riba ◽  
L.W. Hobbs ◽  
G. Dresselhaus ◽  
M.S. Dresselhaus
Keyword(s):  
Electron Microscopy ◽  
Phase Transitions ◽  
Domain Wall ◽  
Intercalation Compounds ◽  
Lattice Plane ◽  
Wall Model ◽  
Graphite Intercalation Compounds ◽  
Fundamental Symmetry ◽  
Graphite Intercalation

Electron microscopy can be used to study structures and phase transitions occurring in graphite intercalations compounds. The fundamental symmetry in graphite intercalation compounds is the staging periodicity whereby each intercalate layer is separated by n graphite layers, n denoting the stage index. The currently accepted model for intercalation proposed by Herold and Daumas assumes that the sample contains equal amounts of intercalant between any two graphite layers and staged regions are confined to domains. Specifically, in a stage 2 compound, the Herold-Daumas domain wall model predicts a pleated lattice plane structure.

Multiple phase transitions investigated by high-speed TEM

1990 ◽  
Vol 48 (4) ◽  
pp. 550-551
Author(s):  
Oleg Bostanjoglo ◽  
Peter Thomsen-Schmidt
Keyword(s):  
Phase Transitions ◽  
High Speed ◽  
Short Exposure ◽  
Semiconductor Film ◽  
Time Resolved ◽  
Short Exposure Time ◽  
Multiple Phase ◽  
Model Substance ◽  
History Of ◽  
Electron Image

Thin GexTe1-x (x = 0.15-0.8) were studied as a model substance of a composite semiconductor film, in addition being of interest for optical storage material. Two complementary modes of time-resolved TEM were used to trace the phase transitions, induced by an attached Q-switched (50 ns FWHM) and frequency doubled (532 nm) Nd:YAG laser. The laser radiation was focused onto the specimen within the TEM to a 20 μm spot (FWHM). Discrete intermediate states were visualized by short-exposure time doubleframe imaging /1,2/. The full history of a transformation was gained by tracking the electron image intensity with photomultiplier and storage oscilloscopes (space/time resolution 100 nm/3 ns) /3/. In order to avoid radiation damage by the probing electron beam to detector and specimen, the beam is pulsed in this continuous mode of time-resolved TEM,too.Short events ( <2 μs) are followed by illuminating with an extended single electron pulse (fig. 1c)

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