Results 191 to 200 of about 940,617 (259)

Engineering interfacial polarization switching in van der Waals multilayers

Nature Nanotechnology
In conventional ferroelectric materials, polarization is an intrinsic property limited by bulk crystallographic structure and symmetry. Recently, it has been demonstrated that polar order can also be accessed using inherently non-polar van der Waals materials through layer-by-layer assembly into heterostructures, wherein interfacial interactions can ...
Madeline Van Winkle, Nikita Dowlatshahi, Nikta Khaloo, Mrinalni Iyer, Isaac M. Craig, Rohan Dhall, Takashi Taniguchi, Kenji Watanabe, D. Kwabena Bediako   +8 more
openaire   +3 more sources

Cumulative polarization in conductive interfacial ferroelectrics

Nature, 2022
Ferroelectricity in atomically thin bilayer structures has been recently predicted1 and measured2-4 in two-dimensional materials with hexagonal non-centrosymmetric unit-cells. The crystal symmetry translates lateral shifts between parallel two-dimensional layers to sign changes in their out-of-plane electric polarization, a mechanism termed 'slide ...
Swarup Deb, Wei Cao, Noam Raab, Kenji Watanabe, Takashi Taniguchi, Moshe Goldstein, Leeor Kronik, Michael Urbakh, Oded Hod, Moshe Ben Shalom   +9 more
openaire   +2 more sources

Interfacial interactions and interfacial polarization in polyazomethine/MWCNTs nanocomposites

Composites Science and Technology, 2020
Abstract We prepared the polyazomethine/MWCNTs nanocomposites varying in the nanofiller loading (from 0 to 1.5 wt%). Taking into account an upshift of the characteristic D and G bands of MWCNTs in the Raman spectrum of the nanocomposite, we confirmed the interfacial interactions between MWCNTs and polymer chains.
Sergei Bronnikov, Sergei Kostromin, Mihai Asandulesa, Dmitrii Pankin, Aleksandr Podshivalov   +4 more
openaire   +1 more source

Insight into Interfacial Polarization for Enhancing Piezoelectricity in Ferroelectric Nanocomposites.

Small, 2023
The interfacial effect is widely used to optimize the properties of ferroelectric nanocomposites, however, there is still a lack of direct evidence to understand its underlying mechanisms limited by the nano size and complex structures.
Guo Tian, W. Deng, Tao Yang, Da Xiong, Hongrui Zhang, Boling Lan, Lin Deng, Binbin Zhang, Long Jin, Haichao Huang, Yue Sun, Shenglong Wang, Weiqing Yang   +12 more
semanticscholar   +1 more source

Ultrahigh Energy-Storage Density of BaTiO3-Based Ceramics via the Interfacial Polarization Strategy.

ACS Applied Materials and Interfaces, 2023
Lead-free dielectric capacitors are excellent candidates for pulsed power devices. However, their low breakdown strength (Eb) strongly limits their energy-storage performance. In this study, Sr0.7Bi0.2TiO3 (SBT) and Bi(Mg0.5Hf0.5)O3 (BMH) were introduced
C. Wang, W. Cao, C. Liang, Hanyu Zhao, Chao Cheng, Shouguo Huang, Yi Yu, Chunchang Wang   +7 more
semanticscholar   +1 more source

Charge Dynamics Engineering Sparks Hetero-Interfacial Polarization for an Ultra-Efficient Microwave Absorber with Mechanical Robustness.

Small, 2023
Microwave absorbers with high efficiency and mechanical robustness are urgently desired to cope with more complex and harsh application scenarios. However, manipulating the trade-off between microwave absorption performance and mechanical properties is ...
Xianhua Huan, Hefeng Li, Yuxiao Song, Jintao Luo, Cong Liu, Ke Xu, H. Geng, Xiaodong Guo, Cheng Chen, Lei Zu, Xiaolong Jia, Jisheng Zhou, Haobin Zhang, Xiaoping Yang   +13 more
semanticscholar   +1 more source

Interfacial tension of polar mixtures

Transactions of the Faraday Society, 1967
A statistical model is developed to represent the adsorption of a soluble surface active material at an oil/water interface. The lowering of interfacial tension associated with this lattice gas representation is compared with predictions based on a regular solution theory and with experiment.
James T. O'Toole, Lawrence H. Shendalman
openaire   +1 more source

Modulation of organic interfacial spin polarization by interfacial angle

Chemical Physics Letters, 2017
Abstract Based on ab initio theory, we theoretically investigated the interfacial spin polarization by adsorbing a benzene-dithiolate molecule onto a nickel surface with different interfacial angles. A variable magnitude and even an inversion of the interfacial spin polarization are observed with the increase of the interfacial angle.
Zhao Zhang, Ying Li, Guang-ping Zhang, Jun-feng Ren, Chuan-kui Wang, Gui-chao Hu   +5 more
openaire   +1 more source

Interfacial polarization phenomena in organic molecular films

Analytica Chimica Acta, 2006
Electrostatic phenomena occurring at the interface between metal/organic and organic/organic materials are discussed from the viewpoint of dielectrics physics. Focusing on two important origins of surface polarization phenomena, orientational ordering of polar molecules and displacement of excess charges at the interface, surface polarization phenomena
Mitsumasa Iwamoto, Takaaki Manaka
openaire   +2 more sources

Bulk and interfacial properties of polar fluids

Berichte der Bunsengesellschaft für physikalische Chemie, 1994
AbstractBased on a suitable density functional theory for inhomogeneous fluids we investigate both the bulk phase diagram and interfacial structures of polar fluids in general and of Stockmayer fluids in particular. We derive a scheme which allows us to analyze one‐component fluids composed of molecules with strong permanent dipole moments which are ...
Frodl, P., Groh, B., Dietrich, S.
openaire   +2 more sources