Results 31 to 40 of about 88,667 (317)
Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna
Advanced Functional Materials, EarlyView.We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz +9 more
wiley +1 more source
International Journal of Rotating Machinery, 1997 Modelling and analysis of a rotor--bearing system with a new type of active oil bearing is presented. The active bearing is supplied with a flexible sleeve whose deformation can be changed during operation of the rotor. The flexible sleeve is also a part
J. M. Krodkiewski, Y. Cen, L. Sun
doaj +1 more source
Experimental study of coupled shaft bending - blade umbrella mode vibration of a turbine rotor model
Nihon Kikai Gakkai ronbunshu, 2014 This paper describes an experimental study on the characteristics of blade-shaft coupled bending vibration of a rotor system with a bladed disk. In a rotor with relatively long blades such as low-pressure steam turbines, the coupled vibration of shaft ...
Takeshi KUDO +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Terminal domains of recombinant collagen‐like silk regulate hierarchical self‐assembly across molecular and material scales. We show that terminal domains of collagen‐like silk enhance triple‐helix stability and drive liquid–liquid phase separation, enabling reversible formation of fibers and self‐healing films.
Mengjie Shen +5 more
wiley +1 more source
Simplified prediction of stability limit for oil film bearing rotor systems
Nihon Kikai Gakkai ronbunshu, 2020 Oil film bearings are often used in large rotating machinery because they have large load capacity and damping coefficients. They, however, generate fluid forces and cause unstable vibrations such as oil whirl and oil whip at high rotational speed ...
Yasuhisa SEKIGUCHI +3 more
doaj +1 more source
Passive cyclic pitch control for horizontal axis wind turbines [PDF]
, 1981 A flexible rotor concept, called the balanced pitch rotor, is described. The system provides passive adjustment of cyclic pitch in response to unbalanced pitching moments across the rotor disk.
Bottrell, G. W.
core +1 more source
High‐Throughput Exfoliation of Optoelectronic‐Grade MoS2 via Turbulent‐Flow Wet Jet Milling
Advanced Functional Materials, EarlyView.A scalable wet jet milling exfoliation method is demonstrated for producing optoelectronic‐grade MoS2 nanosheets using environmentally friendly ethyl cellulose in ethanol dispersion media. Guided by fluid dynamics modeling, this approach is optimized to achieve record‐high exfoliation throughput and concentration.
Maryam Khalaj +7 more
wiley +1 more source
Uncertainty analysis of flexible rotors considering fuzzy parameters and fuzzy-random parameters
Latin American Journal of Solids and StructuresThe components of flexible rotors are subjected to uncertainties. The main sources of uncertainties include the variation of mechanical properties. This contribution aims at analyzing the dynamics of flexible rotors under uncertain parameters modeled as ...
Fabian Andres Lara-Molina +2 more
doaj +1 more source
Advances in Mechanical Engineering, 2018 Magnetic rotor-bearing system has drawn great attention because of its several advantages compared to existent rotor-bearing system, and explicit Runge–Kutta method has achieved good results in solving dynamic equation.
Xi Fang +6 more
doaj +1 more source
Levitation of a flexible rotor supported by hybrid magnetic bearings
Mechanical Engineering Journal, 2015 Recently, it has become necessary for rotors of centrifugal compressors, industrial rolls, and other devices to be less weighted, have a long span, and operate at high rotation speed to increase productivity.
Nozomu ISHIKAWA, Satoshi UENO
doaj +1 more source