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Shuting Chen - One of the best experts on this subject based on the ideXlab platform.
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self polarized ferroelectric pvdf homopolymer ultra thin films derived from langmuir blodgett deposition
2012Co-Authors: Shuting Chen, Xue Li, Amit Kumar, Kaiyang ZengAbstract:It was found that LangmuireBlodgett (LB) deposition process led to the direct formation of ferroelectric b phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the Molecular Chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the b phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient (dzz )o f� 49.4 pm/V was observed in the self-polarized PVDF LB film.
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self polarized ferroelectric pvdf homopolymer ultra thin films derived from langmuir blodgett deposition
2012Co-Authors: Shuting Chen, Xue Li, Amit Kumar, Kui Yao, Francis E H Tay, Kaiyang ZengAbstract:Abstract It was found that Langmuir–Blodgett (LB) deposition process led to the direct formation of ferroelectric β phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the Molecular Chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the β phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient ( d zz ) of −49.4 pm/V was observed in the self-polarized PVDF LB film.
Kaiyang Zeng - One of the best experts on this subject based on the ideXlab platform.
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self polarized ferroelectric pvdf homopolymer ultra thin films derived from langmuir blodgett deposition
2012Co-Authors: Shuting Chen, Xue Li, Amit Kumar, Kaiyang ZengAbstract:It was found that LangmuireBlodgett (LB) deposition process led to the direct formation of ferroelectric b phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the Molecular Chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the b phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient (dzz )o f� 49.4 pm/V was observed in the self-polarized PVDF LB film.
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self polarized ferroelectric pvdf homopolymer ultra thin films derived from langmuir blodgett deposition
2012Co-Authors: Shuting Chen, Xue Li, Amit Kumar, Kui Yao, Francis E H Tay, Kaiyang ZengAbstract:Abstract It was found that Langmuir–Blodgett (LB) deposition process led to the direct formation of ferroelectric β phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the Molecular Chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the β phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient ( d zz ) of −49.4 pm/V was observed in the self-polarized PVDF LB film.
Xue Li - One of the best experts on this subject based on the ideXlab platform.
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self polarized ferroelectric pvdf homopolymer ultra thin films derived from langmuir blodgett deposition
2012Co-Authors: Shuting Chen, Xue Li, Amit Kumar, Kaiyang ZengAbstract:It was found that LangmuireBlodgett (LB) deposition process led to the direct formation of ferroelectric b phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the Molecular Chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the b phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient (dzz )o f� 49.4 pm/V was observed in the self-polarized PVDF LB film.
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self polarized ferroelectric pvdf homopolymer ultra thin films derived from langmuir blodgett deposition
2012Co-Authors: Shuting Chen, Xue Li, Amit Kumar, Kui Yao, Francis E H Tay, Kaiyang ZengAbstract:Abstract It was found that Langmuir–Blodgett (LB) deposition process led to the direct formation of ferroelectric β phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the Molecular Chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the β phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient ( d zz ) of −49.4 pm/V was observed in the self-polarized PVDF LB film.
Amit Kumar - One of the best experts on this subject based on the ideXlab platform.
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self polarized ferroelectric pvdf homopolymer ultra thin films derived from langmuir blodgett deposition
2012Co-Authors: Shuting Chen, Xue Li, Amit Kumar, Kaiyang ZengAbstract:It was found that LangmuireBlodgett (LB) deposition process led to the direct formation of ferroelectric b phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the Molecular Chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the b phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient (dzz )o f� 49.4 pm/V was observed in the self-polarized PVDF LB film.
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self polarized ferroelectric pvdf homopolymer ultra thin films derived from langmuir blodgett deposition
2012Co-Authors: Shuting Chen, Xue Li, Amit Kumar, Kui Yao, Francis E H Tay, Kaiyang ZengAbstract:Abstract It was found that Langmuir–Blodgett (LB) deposition process led to the direct formation of ferroelectric β phase in poly(vinylidene fluoride) (PVDF) homopolymer ultra-thin films, in which the Molecular Chains were parallel to the substrates and the dipoles were aligned perpendicular to the substrates. Theoretical analysis and experimental results further showed that the mechanism of forming the β phase and the dipole orientation were attributed to the hydrogen bonds formed between the PVDF molecules and water through the LB deposition. A large local effective piezoelectric coefficient ( d zz ) of −49.4 pm/V was observed in the self-polarized PVDF LB film.
Bernard Kirtman - One of the best experts on this subject based on the ideXlab platform.
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electric field dependence of the exchange correlation potential in Molecular Chains
1999Co-Authors: S J A Van Gisbergen, P R T Schipper, O V Gritsenko, Evert Jan Baerends, J G Snijders, Benoit Champagne, Bernard KirtmanAbstract:S. J. A. van Gisbergen,1 P. R. T. Schipper,1 O. V. Gritsenko,1 E. J. Baerends,1 J. G. Snijders,2 B. Champagne,3 and B. Kirtman4 1Section Theoretical Chemistry, Vrije Universiteit, De Boelelaan 1083, 1081 HV, Amsterdam, The Netherlands 2Theoretical Chemistry, Materials Science Centre, Rijksuniversiteit Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands 3Laboratoire de Chimie Theorique Appliquee, Facultes Universitaires Notre-Dame de la Paix, rue de Bruxelles, 61, B-5000 Namur, Belgium 4Department of Chemistry, University of California, Santa Barbara, California 93106 (Received 15 January 1999)
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electric field dependence of the exchange correlation potential in Molecular Chains
1999Co-Authors: S J A Van Gisbergen, P R T Schipper, O V Gritsenko, Evert Jan Baerends, J G Snijders, Benoit Champagne, Bernard KirtmanAbstract:Density functional calculations on the (non)linear optical properties of conjugated Molecular Chains using currently popular exchange-correlation (xc) potentials give overestimations of several orders of magnitude. By analyzing ``exact'' and Krieger-Li-Iafrate xc potentials, the error is traced back to an incorrect electric field dependence of the ``response part'' of the xc potential in local and gradient-corrected density approximations, which lack a linear term counteracting the applied electric field.
