Results 141 to 150 of about 1,492,115 (344)
Ultra-low loss integrated visible photonics using thin-film lithium niobate
, 2019 Integrated photonics is a powerful platform that can improve the performance and stability of optical systems, while providing low-cost, small-footprint and scalable alternatives to implementations based on free-space optics.
Marko Loncar (1722550) +4 more
core +1 more source
Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition
Advanced Engineering Materials, EarlyView.A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley +1 more source
Ultra Low Power Frequency Synthesizer
, 2020 En strøm- og jitter FOM state of art integer-N all digital faselåst loop (ADPLL) frekvenssynteser implementert i en kommersielt tilgjengelig 22nm FD-SOI-prosess blir presentert i denne artikkelen. Oppnådd var et strømforbruk på 95 μW med 12 oscillatorfaser ved 816 MHz, et jitter FOM på -225 dB og et aktivt område på 0,00365 mm^2.
openaire +1 more source
, 2016 We present a long-term chip scale stabilization scheme for optoelectronic oscillators (OEOs) based on a rubidium coherent population trapping (CPT) atomic resonator.
Zhang, Yaolin +5 more
core +1 more source
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
Magnetoelectric Speed Sensor to Detect Ultra-Low Frequency Vibrations
, 2013 Ultra-low frequency vibrations are ordinary physical phenomena, and absolute vibrant sensors are usually used to detect them. The author presents a method that using magnetoelectric speed sensor to detect ultra-low frequency vibrations.
Yuxia, Qian, Zhangyi, Yuan, Ke, Dong
core
Advanced Engineering Materials, EarlyView.We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang +2 more
wiley +1 more source
Design and Experimental Investigation of an Ultra-Low Frequency, Low-Intensity, and Multidirectional Piezoelectric Energy Harvester with Liquid as the Energy-Capture Medium. [PDF]
Micromachines (Basel), 2023 Li N, Yang F, Luo T, Qin L.
europepmc +1 more source
Ultra Low Frequency Digital Analyzer: Design and Construction [PDF]
, 1967 This thesis describes the development of an ultra low frequency digital analyzer from mathematical concepts and error characteristics set out in a publication^2 co-authored by the supervisor.
Braithwaite, David John
core
Optimization of the Production of Rubber Compounds Using Mathematical Models
Advanced Engineering Materials, EarlyView.Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle +7 more
wiley +1 more source