Results 81 to 90 of about 4,787 (279)

I.C.E.: a Transportable Atomic Inertial Sensor for Test in Microgravity

open access: yes, 2006
We present our the construction of an atom interferometer for inertial sensing in microgravity, as part of the I.C.E. (\textit{Interf\'{e}rom\'{e}trie Coh\'{e}rente pour l'Espace}) collaboration.
Boussen, Salah   +12 more
core   +4 more sources

Improving Ionic Conformality Across Polymer Electrolyte|Electrode Interfaces

open access: yesAdvanced Materials, EarlyView.
Polymer electrolytes typically form physically intimate electrode interfaces but often fail to maintain continuous ionic pathways, critically limiting battery performance. Through strategic compositional design, this study introduces a molecular ionic composite electrolyte that effectively reduces interfacial ionic depletion, ensuring consistent ion ...
Jungki Min   +12 more
wiley   +1 more source

Innovation and reliability of atomic standards for PTTI applications [PDF]

open access: yes
Innovation and reliability in hyperfine frequency standards and clock systems are discussed. Hyperfine standards are defined as those precision frequency sources and clocks which use a hyperfine atomic transition for frequency control and which have ...
Kern, R.
core   +1 more source

Testing Relativity with Orbiting Oscillators

open access: yes, 2004
Clock-comparison experiments using a satellite platform can give Planck-scale sensitivity to many parameters for Lorentz and CPT violation that are difficult to measure on Earth.
Russell, Neil
core   +2 more sources

Ultrasound in Women's Health: Mechanisms, Applications, and Emerging Opportunities

open access: yesAdvanced Materials, EarlyView.
As healthcare moves toward decentralization, ultrasound technologies are evolving from strictly imaging tools in clinical settings into versatile diagnostic and therapeutic platforms, with growing roles addressing women's health needs. This review highlights how ultrasound's underlying physical mechanisms can be harnessed to reduce disparities in women'
Sarah B. Ornellas   +7 more
wiley   +1 more source

Laser induced asymmetry and inhomogeneous broadening of the microwave lineshape of a gas cell atomic frequency standard [PDF]

open access: yes
The possibility of replacing the RF discharge lamp in a rubidium gas cell clock with a single mode laser diode is addressed. Since the short term stability of the rubidium frequency standard is limited by the shot noise of the photodetector, an increased
Camparo, J. C.   +2 more
core   +1 more source

Computational Studies of Light Shift in Raman-Ramsey Interference-Based Atomic Clock

open access: yes, 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

Scalable Fabrication of High‐Efficiency Thin‐Film Perovskite Solar Cells in Air via Polymer‐Mediated Synthesis of α‐FAPbI3 Microcrystals

open access: yesAdvanced Materials, EarlyView.
We report a scalable strategy using PPG‐coated α‐FAPbI3 microcrystals that may be processed in air and undergo controlled redissolution to form highly oriented, defect‐suppressed perovskite films. The PSCs derived from these films deliver a PCE of 26.5% and exhibit enhanced stability, demonstrating potential for industrial large‐scale perovskite ...
Fan Shen   +16 more
wiley   +1 more source

An optical atomic clock using $4D_J$ states of rubidium

open access: yes
A.D. and C.O.
Duspayev, Alisher   +3 more
openaire   +2 more sources

Research on Rubidium Atomic Clock Disciplined Method Based on LabWindows/CVI

open access: yesDEStech 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

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