Results 231 to 240 of about 8,346 (279)

Cross‐Layer Molecular Design for Coherent Interface Passivation in Rigid and Flexible Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
A cross‐layer passivation strategy employing molecularly designed thiazol‐5‐ylmethanamine hydrochloride (TMACl) enables coherent defect regulation at the SnO2/perovskite interface, stabilizes both layers, promotes phase‐pure α‐FAPbI3 formation, and enhances charge extraction, delivering PCEs of 26.44% in rigid and 24.72% in flexible perovskite solar ...
Fan Shen   +16 more
wiley   +1 more source

Frequency comb measurements for 6G terahertz nano/microphotonics and metamaterials. [PDF]

open access: yesNanophotonics
Kang G   +10 more
europepmc   +1 more source

Spatial transcriptomic clocks reveal cell proximity effects in brain ageing. [PDF]

open access: yesNature
Sun ED   +9 more
europepmc   +1 more source

Quantum Mimicry With Inorganic Chemistry. [PDF]

open access: yesComments Mod Chem A Comments Inorg Chem
Campanella AJ, Üngör Ö, Zadrozny JM.
europepmc   +1 more source

Optical lattice clock

International Quantum Electronics Conference, 2005., 2005
We report on the precision spectroscopy of the 5s/sup 2/ /sup 1/S/sub o/(F=9/2)-5s5p /sup 3/P/sub o/(F=9/2) clock transition of /sup 87/Sr atoms trapped in a one-dimensional optical lattice and discuss its prospects as a future optical clock.
M. Takamoto, H. Katori
openaire   +2 more sources

An optical lattice clock

Nature, 2005
The precision measurement of time and frequency is a prerequisite not only for fundamental science but also for technologies that support broadband communication networks and navigation with global positioning systems (GPS). The SI second is currently realized by the microwave transition of Cs atoms with a fractional uncertainty of 10(-15) (ref.
Masao, Takamoto   +3 more
openaire   +2 more sources

Differential clock comparisons with a multiplexed optical lattice clock

Nature, 2022
Rapid progress in optical atomic clock performance has advanced the frontiers of timekeeping, metrology and quantum science1-3. Despite considerable efforts, the instabilities of most optical clocks remain limited by the local oscillator rather than the atoms themselves4,5.
Xin Zheng   +5 more
openaire   +2 more sources

Optical Lattice Clocks

Optics and Photonics News, 2015
A new breed of atomic clock—the “ticking” of which comes from transitions in millions of cooled atoms, trapped in optical standing waves created by tightly focused lasers—is pushing scientific timekeeping to previously unknown frontiers of precision.
Christopher W. Oates, Andrew D. Ludlow
openaire   +1 more source

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