Results 11 to 20 of about 205,117 (196)
A High-Sensitivity Resonant Magnetic Sensor Based on Graphene Nanomechanical Resonator
Micromachines, 2022 This paper presents a novel resonant magnetic sensor consisting of a graphene nanomechanical oscillator and magnetostrictive stress coupling structure, using Si/SiO2 substrate and Fe–Ga alloy, respectively.
Wenyao Liu +6 more
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Ethylene industrial emitters seen from space
Nature Communications, 2022 Combining 13 years of satellite measurements led to the discovery of 300 global hotspots of atmospheric ethylene (C2H4). They are found to be linked to heavy industries and megacities, and are currently misrepresented in emission inventories.
Bruno Franco +5 more
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Sensors, 2021 In order to improve the precision and beam quality of a pump laser for a spin exchange relaxation free inertial measurement device, we applied one scheme to achieve the square wave modulation and power stability control of the pump laser and another one ...
Jian Hao +3 more
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Conditional quantum plasmonic sensing
Nanophotonics, 2022 Abstract The possibility of using weak optical signals to perform sensing of delicate samples constitutes one of the main goals of quantum photonic sensing. Furthermore, the nanoscale confinement of electromagnetic near fields in photonic platforms through surface plasmon polaritons has motivated the development of highly sensitive ...
Fatemeh Mostafavi +5 more
openaire +4 more sources
All-Optical Tuning of Fano Resonance for Quasi-BIC and Terahertz Sensing Applications
Applied Sciences, 2022 The bound states in the continuum (BIC) support anomalous resonances in the optical or terahertz band with a theoretically infinite quality factor. Therefore, it has great application prospects in the field of sensors.
Wenyao Liu +7 more
doaj +1 more source
npj Quantum Information, 2022 The quantum Cramér–Rao bound sets a fundamental limit on the accuracy of unbiased parameter estimation in quantum systems, relating the uncertainty in determining a parameter to the inverse of the quantum Fisher information. We experimentally demonstrate
Min Yu +10 more
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Quantum Plasmonic Immunoassay Sensing [PDF]
Nano Letters, 2019 Plasmon-polaritons are among the most promising candidates for next generation optical sensors due to their ability to support extremely confined electromagnetic fields and empower strong coupling of light and matter. Here we propose quantum plasmonic immunoassay sensing as an innovative scheme, which embeds immunoassay sensing with recently ...
Nuttawut Kongsuwan +6 more
openaire +5 more sources
On the weekly cycle of atmospheric ammonia over European agricultural hotspots
Scientific Reports, 2022 The presence of a weekly cycle in the abundance of an atmospheric constituent is a typical fingerprint for the anthropogenic nature of its emission sources. However, while ammonia is mainly emitted as a consequence of human activities, a weekly cycle has
Martin Van Damme +7 more
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Temporal analog of Fabry-Pérot resonator via coherent population trapping
npj Quantum Information, 2021 Ramsey spectroscopy via coherent population trapping (CPT) is essential in precision measurements. The conventional CPT-Ramsey fringes contain numbers of almost identical oscillations and so that it is difficult to identify the central fringe.
Ruihuan Fang +8 more
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Physical Review Applied, 2022 Exquisite sensitivities are a prominent advantage of quantum sensors. Ramsey sequences allow precise measurement of direct current fields, while Hahn-echo-like sequences measure alternating current fields. However, the latter are restrained for use with high-frequency fields (above approximately $1$ kHz) due to finite coherence times, leaving less ...
E.D. Herbschleb +7 more
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