Results 41 to 50 of about 1,322,830 (294)

Extracting the differential phase in dual atom interferometers by modulating magnetic fields

open access: yes, 2016
We present a new scheme for measuring the differential phase in dual atom interferometers. The magnetic field is modulated in one interferometer, and the differential phase can be extracted without measuring the amplitude of the magnetic field by ...
Chen, Xi   +8 more
core   +1 more source

Effect of Nb and B on the Precipitation Behaviors in Al-Ti-Nb Balanced-Ratio Ni-Based Superalloy: A Phase-Field Study

open access: yesCrystals
In this paper, quantitative two-dimensional (2-D) phase-field simulations were performed to gain insight into the effects of B and Nb for Al-Ti-Nb balanced-ratio GH4742 alloys.
Na Ta   +4 more
doaj   +1 more source

Description of hard sphere crystals and crystal-fluid interfaces: a critical comparison between density functional approaches and a phase field crystal model

open access: yes, 2012
In materials science the phase field crystal approach has become popular to model crystallization processes. Phase field crystal models are in essence Landau-Ginzburg-type models, which should be derivable from the underlying microscopic description of ...
Berghoff, M.   +4 more
core   +1 more source

Phase Field Simulation of Al-Fe-Mn-Si Quaternary Eutectic Solidification

open access: yesMetals
This study investigates the eutectic equilibrium phases in a multicomponent system through 3-D multi-phase-field simulations. Emphasizing the directional solidification process, the work examines the growth dynamics of intermetallic phase Al13Fe4, a ...
Kimiya NouraniNiaki   +4 more
doaj   +1 more source

Ferroelectric Memory Based on Topological Domain Structures: A Phase Field Simulation

open access: yesCrystals, 2022
The low storage density of ferroelectric thin film memory currently limits the further application of ferroelectric memory. Topologies based on controllable ferroelectric domain structures offer opportunities to develop microelectronic devices such as ...
Jing Huang   +3 more
doaj   +1 more source

Accelerating fracture simulation with phase field methods based on Drucker-Prager criterion

open access: yesFrontiers in Physics, 2023
The paper presents a framework for accelerating the phase field modeling of compressive failure of rocks. In this study, the Drucker-Prager failure surface is taken into account in the phase field model to characterize the tension-compression asymmetry ...
Bin Liu, Zhenghe Liu, Lusheng Yang
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Research on polarization switching dynamics in barium titanate ferroelectric tunnel junctions

open access: yesGongneng cailiao yu qijian xuebao
To address the high energy consumption and low efficiency caused by the data transfer bottleneck between processors and memory in von Neumann architectures, this study explores a neuromorphic computing solution based on ferroelectric tunnel junctions ...
Zhan-feng ZHANG   +3 more
doaj   +1 more source

Quantitative isothermal phase-field simulations of peritectic phase transformation in FeMn system

open access: yesJournal of Materials Research and Technology, 2016
The present investigation shows quantitative results for the peritectic phase transformation of FeMn alloys utilizing phase-field simulations in 1-D and 2-D. The phase-field method used was based on an adaptation of the proposal of Folch and Plapp [Phys.
Celso Luiz Moraes Alves   +3 more
doaj   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

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