Results 101 to 110 of about 8,346 (279)

Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories

Advanced Engineering Materials, EarlyView.
A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi, Stephan Roth, Christos G. Aneziris, Bjoern Kiefer   +3 more
wiley   +1 more source

Collinear Three-Photon Excitation of a Strongly Forbidden Optical Clock Transition

Physical Review X
The ^{1}S_{0}-^{3}P_{0} clock transition in strontium serves as the foundation for the world’s best atomic clocks and for gravitational wave detector concepts in clock atom interferometry.
Samuel P. Carman, Jan Rudolph, Benjamin E. Garber, Michael J. Van de Graaff, Hunter Swan, Yijun Jiang (姜一君), Megan Nantel, Mahiro Abe, Rachel L. Barcklay, Jason M. Hogan   +9 more
doaj   +1 more source

Quantum engineering of atomic phase-shifts in optical clocks

, 2014
Quantum engineering of time-separated Raman laser pulses in three-level systems is presented to produce an ultra-narrow optical transition in bosonic alkali-earth clocks free from light shifts and with a significantly reduced sensitivity to laser ...
Almonacil, S., Arimondo, E., de Clercq, E., Ludlow, A. D., Zanon-Willette, T.   +4 more
core   +3 more sources

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Noise Differentiation and Atom Number Measurement in Optical Lattice Clocks by Analyzing Clock Stabilities with Various Parameters

Applied Sciences
We propose a method that enables the precise determination of the number of atoms in a Dick-noise-free optical lattice clock, by effectively addressing quantum projection noise.
Guodong Zhao, Feng Guo, Xiaotong Lu, Hong Chang   +3 more
doaj   +1 more source

Molecular lattice clock with long vibrational coherence

, 2019
Atomic lattice clocks have spurred numerous ideas for tests of fundamental physics, detection of general relativistic effects, and studies of interacting many-body systems. On the other hand, molecular structure and dynamics offer rich energy scales that
B Neyenhuis, B Yan, BH McGuyer, BH McGuyer, C Chou, C. Liedl, C.-H. Lee, CW Chou, D Hanneke, EJ Salumbides, EJ Salumbides, G Reinaudi, I. Majewska, J Ye, JF Barry, JW Park, K. H. Leung, M Borkowski, M Kajita, M Li, M McDonald, M McDonald, N Huntemann, N Nemitz, R. Moszynski, RM Godun, S Kolkowitz, S Kolkowitz, S Kotochigova, S Ospelkaus, S Schiller, S. S. Kondov, SA Moses, SL Campbell, T Rosenband, T Zelevinsky, T. Zelevinsky, W Skomorowski, WB Cairncross, WF McGrew   +39 more
core   +1 more source

Transportable optical lattice clocks and general relativity

International Journal of Modern Physics D
Optical lattice clocks (OLCs) enable us to measure time and frequency with a fractional uncertainty at [Formula: see text] level, which is 2 orders of magnitude better than Cs clocks. In this paper, after briefly reviewing OLCs and the history of testing the fundamental principles of general relativity, we report our experiments of measuring the ...
Hisaaki Shinkai, Masao Takamoto, Hidetoshi Katori   +2 more
openaire   +2 more sources

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source

Bioinspired Shape‐Memory Hook Fasteners With Programmable Interlocking and Silent Release

Advanced Engineering Materials, EarlyView.
Bioinspired hook fasteners made from epoxy shape‐memory polymers are shown to switch between strong, secure attachment and gentle, silent release when heated. By combining programmable geometry and material response, these adaptive fasteners outperform commercial systems in strength and noise control, enabling new solutions for robotics, medical ...
Maria I. Vallejo Ciro, Manuel J. Carvajal Loaiza, Rahaf Homssi, Vanessa Restrepo   +3 more
wiley   +1 more source

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

Advanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan, Nora Fernández Navas, Thorgund Nemec, Ivan Kaban, Ute Hempel, Andrea Voss, Volker Hoffmann, Darius Pohl, Annett Gebert   +8 more
wiley   +1 more source