Results 81 to 90 of about 71,707 (286)

High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties

open access: yesAdvanced Functional Materials, EarlyView.
High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker   +14 more
wiley   +1 more source

Power Saving Application of Permanent Magnetic Drive Technology on the Beam Pumping Unit

open access: yesShiyou jixie, 2017
In view of the issue of large working load fluctuation and power consumption of the beam pumping unit, based on the working principle and energy-saving features of the permanent magnetic drive technology, a new energy-saving scheme has been proposed to ...
Du Yi, Zhou Aiguo
doaj  

MODELING OF DYNAMOMETER CARDS IN QUASISTEADY OPERATION MODES OF SUCKER ROD PUMPS

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2015
The article presents the dependences, permitting to calculate the fluid level in the annulus of the sucker rod pump (SRP) at step changing of the beam-pumping unit actions number and to simulate the SRP dynamometer cards .
V. D. Kovshov   +2 more
doaj   +1 more source

Designing Asymmetric Memristive Behavior in Proton Mixed Conductors for Neuromorphic Applications

open access: yesAdvanced Functional Materials, EarlyView.
Protonic devices that couple ionic and electronic transport are demonstrated as bioinspired neuromorphic elements. The devices exhibit rubber‐like asymmetric memristive behavior with slow voltage‐driven conductance increase and rapid relaxation, enabling simplified read–write operation.
Nada H. A. Besisa   +6 more
wiley   +1 more source

Motion Analysis of Double Crank 2K-H Gear Train Large Swing Angle Reversing Device

open access: yesJixie chuandong, 2021
Aiming at the shortcomings of current beam pumping units with small stroke,large energy consumption,and poor movement performance,as well as the general problem of low reliability and unstable transmission of beam less pumping units,a design scheme of ...
Bingyi Li   +6 more
doaj  

Sagnac interferometry with coherent vortex superposition states in exciton-polariton condensates

open access: yes, 2015
We investigate prospects of using counter-rotating vortex superposition states in non-equilibrium exciton-polariton Bose-Einstein condensates for the purposes of Sagnac interferometry. We first investigate the stability of vortex-antivortex superposition
Byrnes, Tim   +3 more
core   +1 more source

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

Experimental Study on Hydraulic Coupling for Pumping Unit

open access: yesShiyou jixie, 2016
Using the hydraulic coupling gearbox power unit, and integrating the adjustable speed motor, coupling and gearbox to one power unit could reduce the energy consumption of the beam pumping unit.
Fu Yarong   +6 more
doaj  

Robust characterization of microfabricated atomic beams on a six-month time scale

open access: yesPhysical Review Research, 2020
Miniature atomic beams can provide new functionalities for atom-based sensing instruments such as atomic clocks and interferometers. We recently demonstrated a planar silicon device for generating well-collimated thermal atomic beams [Nat. Commun.
Chao Li (李超)   +6 more
doaj   +1 more source

Dual‐Ligand Metal‐Organic Frameworks via In Situ Amidoxime Engineering for Selective Ion Separation

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by microbial ion‐trapping mechanisms, a mild and universal strategy is developed to construct highly porous amidoxime‐functionalized MOFs. DFT calculations and molecular force measurements reveal that the dual‐ligand amidoxime configuration significantly strengthens Ga(III) affinity.
Zhifang Lv   +9 more
wiley   +1 more source

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