Results 111 to 120 of about 2,998,373 (268)
Perspective: Hollow Core Optical Fibres for Ultraviolet and Visible Wavelengths
Advanced Science, EarlyView.Hollow core optical fibres bypass material constraints that limit optical fibres at ultraviolet and visible wavelengths. However, their challenging fabrication has limited their development, and significant gains in performance remain possible. In this perspective we outline approaches to enable the next generation of fibres for shorter wavelengths ...
Robbie Mears +5 more
wiley +1 more source
Simulation and Frequency Optimization Research of Variable Frequency Driven Beam Pump System
Shiyou jixieA beam pumping unit driven by a motor at a constant speed features greatly varying cyclic alternating load, high energy consumption and frequent failures during operation.
Zhang Chuanxin +6 more
doaj
Advanced Science, EarlyView.Temperature‐dependent electron diffraction on tin monochalcogenides demonstrates a gradual displacive transformation between ferroelectric and paraelectric phases with significant variability in lattice constants and Curie temperature (TC). Periodic variations exist even between domains in individual crystals, implying a domain‐specific Curie ...
Peter Sutter, Eli Sutter
wiley +1 more source
Advanced Science, EarlyView.Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel +3 more
wiley +1 more source
Møte i arbeidsgruppen for Oria 17-09-2021
, 2021 Møte i arbeidsgruppen for Oria 17-09-2021.Møte i arbeidsgruppen for Oria 17-09 ...
Unit
core
Engineering of Crystal and Domain Structures in Epitaxial Y:HfO2 Thin Films by YSZ Substrate Miscut
Advanced Science, EarlyView.We investigate how YSZ substrate miscut influences crystal structure and domain formation in epitaxial Y‐doped HfO2 thin films. Using magnetron sputtering, high‐resolution X‐ray diffraction, atomic‐resolution scanning transmission electron microscopy, and first‐principles calculations, we systematically examine the characteristics of thickness‐ and ...
Jun Young Lee +12 more
wiley +1 more source
Årsrapport pensumlistekonsortiet 2021
, 2022 Årsrapport pensumlistekonsortiet 2021Årsrapport pensumlistekonsortiet ...
Unit
core
Optimization Design of Pumping Unit Reversing Mechanism based on Output Swing Angle Analysis
Jixie chuandong, 2019 Aiming at the problem that the output angle of the elliptical gear planetary gear train reversing mechanism with small beam pumping unit is small and can not meet the long stroke demand, the influencing factors of the output swing angle of the mechanism ...
Liu Yongping Li Dawei Dong Changbin
doaj
Advanced Science, EarlyView.Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang +3 more
wiley +1 more source
Shiyou jixie, 2020 Pertinent to the issues, such as the improper motor matching, lower load utilization rate and lower ground efficiency, caused by the trouble to accurately calculate the motor input power during pumping unit production optimization, a new theoretical ...
姜东 +6 more
doaj