Results 41 to 50 of about 34,106 (228)

Molecular dynamics simulation on the effect of dislocation structures on the retention and distribution of helium ions implanted into silicon

Nanotechnology and Precision Engineering, 2020
To investigate the effect of dislocation structures on the initial formation stage of helium bubbles, molecular dynamics (MD) simulations were used in this study. The retention rate and distribution of helium ions with 2 keV energy implanted into silicon
Li Ji, Lei Liu, Zongwei Xu, Ying Song, Jintong Wu, Rongrong Li, Fengzhou Fang   +6 more
doaj   +1 more source

Formation of Bubble-Loop Complexes During Helium Radiation in Fe-9Cr Steel

Frontiers in Energy Research, 2021
In the present study, the Fe-9Cr model alloy was irradiated with 240 keV He2+ at 550°C with a dose of 0.5 dpa at the peak damage region. The depth distribution of bubbles in Fe-9Cr alloy was investigated by transmission electron microscopy (TEM).
Tiantian Shi, Wenbo Liu, Zhengxiong Su, Xu Yan, Chenyang Lu, Zhaoxi Yang, Xinfu He, Wei Yan, Di Yun, Di Yun   +9 more
doaj   +1 more source

Kinetics of helium bubble formation in nuclear materials

, 2005
The formation and growth of helium bubbles due to self-irradiation in plutonium has been modelled by a discrete kinetic equations for the number densities of bubbles having $k$ atoms.
A. Carpio, J.C. Neu, King, L.L. Bonilla, McKendrick, Neu, Schwartz, W.G. Wolfer   +7 more
core   +2 more sources

Pore Size Effects of Mesoporous N‐Doped Carbon Nanospheres as Advanced Support Material on the Activity of Molybdenum Sulfide Catalysts for the Hydrogen Evolution Reaction

Advanced Functional Materials, EarlyView.
By tuning the pore size of mesoporous N‐doped carbon (MPNC) nanospheres as support material for molybdenum sulfide, the electrochemical activity of the composite material for the hydrogen evolution reaction can be optimized. An ideal MPNC pore size of 60 nm allows a high number of molybdenum sulfide active sites while maintaining efficient proton and ...
Niklas Ortlieb, Christian Völker, Lars Guggolz, Anna Fischer   +3 more
wiley   +1 more source

Viscoelasticity‐Induced Controllable Periodic Meso‐Textures of Liquid Crystal Polymers in Additive Manufacturing

Advanced Functional Materials, EarlyView.
Viscoelasticity‐driven instabilities are harnessed to create tunable, periodic textures in 3D‐printed liquid crystalline polymers. This study illustrates how processing parameters control these spontaneous meso‐scale patterns. These unique structural architectures unlock new possibilities for functional devices, ranging from photonic components to ...
Miaomiao Zou, Jiongyi Yan, Dick F. Firdaus, Amy Jin, Jiaxuan Li, Shushan Wang, Ran Chen, Xudong Tao, Zehao Ji, Yi Liu, Zichen Wang, Christos Margadji, Mark Kotter, J. Axel Zeitler, George G. Malliaras, Ronan Daly, Andrew Gleadall, Sebastian W. Pattinson   +17 more
wiley   +1 more source

Time-evolution of ionization and heating around first stars and miniquasars [PDF]

, 2008
A one dimensional radiative transfer code is developed to track the ionization and heating pattern around the first miniquasars and Population III stars.
Abel, Aghanim, Allison, Barkana, Begelman, Benson, Bharadwaj, Bromm, Carilli, Chuzhoy, Ciardi, Ciardi, Dijkstra, Dijkstra, Dopita, Elvis, Fan, Fan, Field, Fukugita, Furlanetto, Furlanetto, Furlanetto, Hogan, Iliev, Iliev, Iliev, Jones, Kitayama, Kuhlen, Kuhlen, Laor, Liszt, Madau, Madau, Mellema, Nusser, Press, Rajat M. Thomas, Rhook, Ricotti, Ricotti, Saleem Zaroubi, Sazonov, Schaerer, Scott, Shapiro, Shaver, Shull, Smith, Spaans, Spergel, Sunyaev, Sunyaev, Sunyaev, Tozzi, Vanden Berk, Verner, Vignali, Volonteri, Whalen, Wouthuysen, Wyithe, Wyithe, Wyithe, Zaldarriaga, Zaroubi, Zaroubi, Ze'ldovich, Zygelman   +69 more
core   +2 more sources

Text Mining of CVD Synthesis Recipes for 2D Materials

Advanced Materials, EarlyView.
A lightweight, multi‐stage natural language processing framework utilizes fine‐tuned BERT models to extract chemical vapor deposition synthesis knowledge from diverse 2D materials literature. The domain‐adapted workflow integrates classification, named entity recognition, and extractive question answering to systematically retrieve categorical and ...
Ang‐Yu Lu, Richard A. Chen, Aijia Yao, Meng‐Chi Chen, Ji‐Hoon Park, Tianyi Zhang, Xudong Zheng, Nannan Mao, Jiangtao Wang, Zhien Wang, Tomás Palacios, Jing Kong   +11 more
wiley   +1 more source

Coupling Nanostructured Plasmon–Strain Microwave Waveguide to Spin Defects in Hexagonal Boron Nitride for High‐Sensitivity Quantum Sensors

Advanced Materials, EarlyView.
Coupling of spin‐active VB−$V_B^ - $ defects in hBN with alumina‐coated gold plasmonic nanoresonators (PNRs), integrated into a microwave‐efficient waveguide, constitutes a plasmon‐strain architecture that enhances their photoluminescence and spin contrast. This platform enables a tenfold quantum yield improvement and achieves a DC magnetic sensitivity
Naveed Hussain, Sumukh Vaidya, Saakshi Dikshit, Shahriar Esmaeili, Paul Schmalenberg, Hayate Yamano, Katsunori Danno, Biswajit Sahoo, Shougo Higashi, Ercan M. Dede, Tongcang Li, Debasish Banerjee, Songtao Wu   +12 more
wiley   +1 more source

First-principles study of helium behaviors in oxide dispersion strengthened nickel alloys

Nuclear Materials and Energy, 2022
Y-Al-O oxides are characterized to be primary nanoprecipitates in oxide dispersion strengthened (ODS) Ni-based alloys for Very High Temperature Reactor (VHTR).
Fan Jia, Yiren Wang, Yong Jiang
doaj   +1 more source

The Cosmological Kibble Mechanism in the Laboratory: String Formation in Liquid Crystals [PDF]

, 1992
We have observed the production of strings (disclination lines and loops) via the Kibble mechanism of domain (bubble) formation in the isotropic to nematic phase transition of a sample of uniaxial nematic liquid crystal.
Bowick, M. J., Chandar, L., Schiff, E. A., Srivastava, A. M.   +3 more
core   +3 more sources