Results 51 to 60 of about 124,588 (288)
Proper calculation of a modulation half cycle from the Allan deviation
Metrologia, 2015 The Allan deviation is commonly used to determine the long term stability and precision of oscillators or otherwise continuous measurements. When periodic, fixed frequency modulation is present, it has been previously stated that the resulting peak in the estimate coincides with the half cycle of the modulation period. However, this peak is located at ~
Cantwell G Carson, Igor V Haljasmaa
openaire +2 more sources
Enhanced Endoscopic Internal Drainage of Gastric Abscess Through Additively Manufactured Stents
Advanced Healthcare Materials, EarlyView.Postoperative gastric leaks are often treated with off‐label biliary double‐pigtail stents, yet conventional extruded designs are not optimized for leak anatomy, can migrate, and may limit abscess evacuation. PETALS is introduced to optimize transmural drainage geometry and enable patient‐specific 3D‐printable stents.
Parima Phowarasoontorn +14 more
wiley +1 more source
MEMS Huygens Clock Based on Synchronized Micromechanical Resonators
EngineeringWith the continuous miniaturization of electronic devices, microelectromechanical system (MEMS) oscillators that can be combined with integrated circuits have attracted increasing attention.
Xueyong Wei +8 more
doaj +1 more source
Mid-infrared photoacoustic gas monitoring driven by a gas-filled hollow-core fiber laser
Scientific Reports, 2021 Development of novel mid-infrared (MIR) lasers could ultimately boost emerging detection technologies towards innovative spectroscopic and imaging solutions.
Yazhou Wang +6 more
doaj +1 more source
Frontiers in Physics, 2022 In order to get a better tradeoff between the long lifetime and high performances of cesium beam atomic clocks, we proposed a design scheme of compact optically pumped cesium beam tube (OPCBT) based on hexapole magnetic focusing (HMF) system for the ...
Haijun Chen +3 more
doaj +1 more source
Thermal noise of whispering gallery resonators
, 2012 By direct application of the fluctuation-dissipation theorem, we numerically calculate the fundamental dimensional fluctuations of crystalline CaF2 whispering gallery resonators in the case of structural damping, and the limit that this noise imposes on ...
Akobuije Chijioke +4 more
core +1 more source
Evaluating Optical Fiber Links with Data Filtering and Allan Deviation
, 2015 In this paper we propose a simple method to reject the high-frequency noise in the evaluation of statistical uncertainty of coherent optical fiber links. Specifically, we propose a preliminary data filtering, separated from the frequency stability computation.
Calosso, Claudio Eligio +2 more
openaire +2 more sources
Advanced Healthcare Materials, EarlyView.A human microfluidic blood‐brain barrier (mBBB) model enables spatially resolved comparison of nanoparticle trafficking. Extracellular vesicles (EVs), liposomes, and nanoplastics exhibit distinct transport and disruption behaviors, revealing that membrane composition and uptake pathways govern BBB interaction.
Bryan B. Nguyen +9 more
wiley +1 more source
Detection of ultra-high resonance contrast in vapor cell atomic clocks
, 2012 We propose and demonstrate a novel detection scheme of clock signals and obtain an ultra-high resonance contrast above 90%. The precision of the signal's detection and the signal-to-noise ratio (SNR) of atomic clock signal is improved remarkably.
Allan +18 more
core +1 more source