Results 121 to 130 of about 109,910 (319)

Epitaxially strained [001]-(PbTiO$_3$)$_1$(PbZrO$_3$)$_1$ superlattice and PbTiO$_3$ from first principles

, 2003
The effect of layer-by-layer heterostructuring and epitaxial strain on lattice instabilities and related ferroelectric properties is investigated from first principles for the [001]-(PbTiO$_3$)$_1$(PbZrO$_3$)$_1$ superlattice and pure PbTiO$_3$ on a ...
A. Garcia, B. Noheda, C. Bungaro, Claudia Bungaro, D. Vanderbilt, D.M. Ceperley, G.-M. Rignanese, G.-M. Rignanese, H.X. Fu, J. Sigman, J.B. Neaton, J.B. Neaton, J.C. Jiang, J.P. Perdew, K. M. Rabe, M.P. Warusawithana, N.A. Pertsev, P. Hohenberg, R.D. King-Smith, S. Baroni, S.E. Park, W. Kohn, Z. Wu   +22 more
core   +1 more source

Ferroelectricity and Large Piezoelectric Response of AlN/ScN Superlattice.

ACS Applied Materials and Interfaces, 2018
Based on density functional theory, we investigate the ferroelectric and piezoelectric properties of the AlN/ScN superlattice, consisting of ScN and AlN buckled monolayers alternating along the crystallographic c-direction.
Mohammad Noor-A-Alam, Oskar Z Olszewski, M. Nolan   +2 more
semanticscholar   +1 more source

Transient Terahertz Oscillations During Photoinduced Polarization Topology Reconfiguration in Ferroelectric Superlattices

Advanced Science, EarlyView.
Terahertz resonances in crystalline heterostructures could close a spectral gap between conventional electronics and photonics while opening new windows on non‐equilibrium lattice dynamics. Femtosecond optical screening of the depolarization field in epitaxial PbTiO3/SrTiO3 superlattices launches a collective polar mode that oscillates near 1 THz and ...
Deepankar Sri Gyan, Hyeon Jun Lee, Xiangwei Guo, Youngjun Ahn, Samuel D. Marks, Mohammed H. Yusuf, Matthew Dawber, James M. Glownia, Diling Zhu, Takahiro Sato, Sanghoon Song, Haidan Wen, Jia‐Mian Hu, Paul G. Evans   +13 more
wiley   +1 more source

Polymorphic Superparaelectric Engineering Boosting Energy Storage Capacity in BaTiO3‐Based Ceramics

Advanced Science, EarlyView.
Herein, Ca2+ incorporation promotes the coexistence of CaTiO3‐/BaTiO3‐derived paraferroelectric states, stabilizing cubic‐orthorhombic‐tetragonal polymorphic superparaelectric phases. This minimizes polarization energy barriers, facilitating full polarization saturation without compromising efficiency.
Pan Liu, Xiang Ren, Jin Qian, Haihua Huang, Peng Li, Peng Fu, Jigong Hao, Huarong Zeng, Wei Li, Zhenxiang Cheng   +9 more
wiley   +1 more source

Super-lattice, rhombus, square, and hexagonal standing waves in magnetically driven ferrofluid surface

, 2000
Standing wave patterns that arise on the surface of ferrofluids by (single frequency) parametric forcing with an ac magnetic field are investigated experimentally.
A. Kudrolli, A. Kudrolli, C. Wagner, D. Raitt, H. Arbell, H. Müller, Hyun-Jae Pi, J.-C. Bacri, Jysoo Lee, Kyoung J. Lee, M. Cross, M. Silber, M. Silber, N. Tufillaro, Ouyang, R. Lifshitz, R. Rosenweig, So-yeon Park, T. Mahr, T. Mahr, W. S. Edwards, W. S. Edwards   +21 more
core   +1 more source

Superlattice growth and rearrangement during evaporation-induced nanoparticle self-assembly

Scientific Reports, 2017
Understanding the assembly of nanoparticles into superlattices with well-defined morphology and structure is technologically important but challenging as it requires novel combinations of in-situ methods with suitable spatial and temporal resolution.
E. Josten, E. Wetterskog, A. Glavic, P. Boesecke, A. Feoktystov, Elke Brauweiler‐Reuters, U. Rücker, G. Salazar-Alvarez, T. Brückel, L. Bergström   +9 more
semanticscholar   +1 more source

High‐Throughput Data Generation and Transfer Learning Enabled Microstructure‐Property Integrated Design of Nickel‐Based Powder Metallurgy Superalloy

Advanced Science, EarlyView.
An integrated transfer learning framework integrates CALPHAD simulations, diffusion‐multiple experiments, and literature data to predict long‐term microstructural stability and short‐term mechanical properties of Ni‐based powder metallurgy superalloys. Based on these model predictions, a high‐performance, low‐density alloy, USTB‐PM750, is designed from
Zixin Li, Hongtao Zhang, Zichao Peng, Yuheng Zhang, Qian Lv, Yihuan Cao, Xuqing Wang, Huadong Fu, Jianxin Xie   +8 more
wiley   +1 more source

Thermal conductance of superlattice junctions

AIP Advances, 2015
We use molecular dynamics simulations and the lattice-based scattering boundary method to compute the thermal conductance of finite-length Lennard-Jones superlattice junctions confined by bulk crystalline leads.
Simon Lu, Alan J. H. McGaughey
doaj   +1 more source

Superlattice-based thin-film thermoelectric modules with high cooling fluxes

Nature Communications, 2016
In present-day high-performance electronic components, the generated heat loads result in unacceptably high junction temperatures and reduced component lifetimes.
G. Bulman, Phil Barletta, Jay S. Lewis, Nicholas G. Baldasaro, M. Manno, A. Bar-Cohen, Bao Yang   +6 more
semanticscholar   +1 more source

A Triple‐Nanoparticle System for Controlled Graphene Nanosheet Stacking: Enabling K/Na‐Ion Battery Anodes with Ultra‐Fast Charging Exceeding Petroleum Vehicle Refueling

Advanced Science, EarlyView.
ABSTRACT Large‐ion (K, Na) battery systems mitigate uneven global lithium distribution, while their ability to attain recharge time shorter than refueling would remove the final barrier for secondary batteries to replace petroleum vehicles. However, their large‐ion chemistry makes ultra‐fast charging an even significant challenge.
Shukai Ding, Le Zhang, Hang Li, Yang Zhang, Guoquan Suo, Bin Han, Dongfeng Sun, Wenqi Zhao, Gaohui Du, Qingmei Su, Bingshe Xu, Zhen Xu, Wei Wang   +12 more
wiley   +1 more source