Results 91 to 100 of about 3,503 (278)
PhotonicsThis paper proposes a method to generate a low-noise 10.23 MHz time-frequency reference signal based on high-order harmonic locking of the repetition rate (fr) of an optical frequency comb (OFC).
Nanhui Xu +8 more
doaj +1 more source
Precise time technology for selected Air Force systems: Present status and future requirements [PDF]
Precise time and time interval (PTTI) technology is becoming increasingly significant to Air Force operations as digital techniques find expanded utility in military missions. Timing has a key role in the function as well as in navigation.
Yannoni, N. F.
core +1 more source
An optical atomic clock using $4D_J$ states of rubidium
A.D. and C.O.
Duspayev, Alisher +3 more
openaire +2 more sources
Research on Rubidium Atomic Clock Disciplined Method Based on LabWindows/CVI
DEStech Transactions on Computer Science and Engineering, 2018 With the increasing demand for stable, accurate and reliable frequency standard sources in the field of measurement and control, rubidium atomic clocks with strong environmental adaptability and low price are widely used but are limited by long-term frequency drift.
Ran Yan, Jianfeng Wu, Yonghui Hu, Xu Liu
openaire +1 more source
Conductive Hydrogels for Exogenous Sensing and Cell Fate Control
Advanced Materials, EarlyView.We engineer electrically conductive hydrogels by combining sulfated glycosaminoglycans with semiconducting polymers. These hydrogels bind bioactive proteins, including growth factors, whose release or retention can be modulated by low‐voltage stimulation. The hydrogels are also integrated as 3D channels in organic electrochemical transistors as part of
Teuku Fawzul Akbar +15 more
wiley +1 more source
PhotonicsIn the rubidium-87 atomic fountain clock, the laser collimating and beam-expanding telescope plays a key role in atomic cooling and manipulation, as well as in realizing the cold-atom fountain.
Fan Liu +5 more
doaj +1 more source
Computational Studies of Light Shift in Raman-Ramsey Interference-Based Atomic Clock
, 2014 Determining light shift in Raman-Ramsey interference is important for the development of atomic frequency standards based on a vapor cell. We have accurately calculated light shift in Raman-Ramsey interference using the density-matrix equations for a ...
Pati, G. S. +3 more
core +1 more source
Advanced Materials Interfaces, EarlyView.Interfacial charge transfer and low‐resistance interphase formation between PEO‐based polymer and Li10GeP2S12 solid electrolytes are investigated using multi‐electrode impedance spectroscopy and advanced analytical techniques such as XPS and ToF‐SIMS.
Ujjawal Sigar +6 more
wiley +1 more source
A simplified method for calculating the ac Stark shift of hyperfine levels
, 2014 The ac Stark shift of hyperfine levels of neutral atoms can be calculated using the third order perturbation theory(TOPT), where the third order corrections are quadratic in the atom-photon interaction and linear in the hyperfine interaction.
Chen, Xuzong +3 more
core +1 more source
From Copper Nanoparticles to Alumina Encapsulated Porous Layers With Enhanced Mechanical Stability
Advanced Materials Interfaces, EarlyView.This study analyzes the synthesis‐structure relation of individual Cu nanoparticles and highly porous nanoparticle‐based Cu films using different sputtering‐based nanoparticle sources. The inherent mechanical instability of the films is tackled with Al2O3 encapsulation through atomic layer deposition, enabling 4‐fold increase in critical force in ...
Dominik Gutnik +6 more
wiley +1 more source