Results 121 to 130 of about 8,599,303 (346)

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

π-π2max: Bridging molecular characteristics to crystal packing in nitro-containing two-dimensional energetic materials

Defence Technology
Two-dimensional energetic materials (2DEMs), characterized by their exceptional interlayer sliding properties, are recognized as exemplar of low-sensitivity energetic materials.
Xiaokai He, Chao Chen, Zhixiang Zhang, Linyuan Wen, Yiding Ma, Yilin Cao, Yingzhe Liu   +6 more
doaj   +1 more source

Direct optical observation of walls and disclination effects in active photonic devices

, 2009
Liquid crystal tunable Bragg Gratings defined in planar substrates via a laser patterning technique exhibit complex wavelength tuning. This tuning displays threshold points and hysteresis. These tuning features are shown to be a manifestation of physical
Adikan, F.R.M., Dyadyusha, A., Gates, J.C., Gawith, C.B.E., Kaczmarek, M., Major, Huw E., Smith, P.G.R., Snow, B.D.   +7 more
core   +1 more source

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

Advanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko, Evelyn Wang, Michael A. Hickner   +2 more
wiley   +1 more source

Twist, splay, and uniform domains in ferroelectric nematic liquid crystals

Nature Communications
The newly-discovered ferroelectric nematic liquid crystal exhibits a variety of unique defect phenomena. The depolarization field in the material favors spontaneous spatial variations in polarization, manifesting in diverse forms such as bulk twists and ...
Maxim O. Lavrentovich, Priyanka Kumari, Oleg D. Lavrentovich   +2 more
doaj   +1 more source

Comparison of 2D melting criteria in a colloidal system

, 2012
We use super-paramagnetic spherical particles which are arranged in a two-dimensional monolayer at a water/air interface to investigate the crystal to liquid phase transition.
Dillmann, Patrick, Keim, Peter, Maret, Georg   +2 more
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Multifunctional zinc-ion capacitors for energy storage

Communications Materials
Zinc-ion capacitors are promising energy storage systems due to their high theoretical capacity, environmental friendliness, and cost effectiveness. Recently, to broaden application scenarios, multifunctional zinc-ion capacitors have been designed and ...
Pu Guo, Yuyan Tang, Zhengjun Deng, Xiaoqian Ju, Shudong Xu, Yuzhen Zhao, Shaohui Li, Jingwei Chen   +7 more
doaj   +1 more source

Multifunctional C/TiO2 from MXene/Polyaniline for Electromagnetic Protection and Supercapacitor

Energy Material Advances
Enormous endeavors have been made to cope with microwave pollution and energy crisis. Here, porous nitrogen-doped C/TiO2 composites with absorption/shielding/supercapacitor functions were derived from MXene/polyaniline.
Xiaodan Xu, Yanxiang Wang, Chengjuan Wang, Bowen Cui, Chengguo Wang   +4 more
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source