Results 11 to 20 of about 7,200,285 (346)
Rapid frequency modulation in a resonant system: aerial perturbation recovery in hawkmoths. [PDF]
Proc Biol Sci, 2021 Centimetre-scale fliers must contend with the high power requirements of flapping flight. Insects have elastic elements in their thoraxes which may reduce the inertial costs of their flapping wings.
Gau J +5 more
europepmc +2 more sources
Experimental Results of Underwater Acoustic Communication with Nonlinear Frequency Modulation Waveform [PDF]
Sensors, 2021 In this paper, we propose underwater acoustic (UWA) communications using a generalized sinusoidal frequency modulation (GSFM) waveform, which has a distinct ambiguity function (AF) and correlation function characteristic.
Jeongha An +3 more
doaj +2 more sources
Cell modeling using frequency modulation. [PDF]
PLoS ONEComputational models of the cell can be used to study the impact of drugs and assess pathological risks. Typically, these models are computationally demanding or challenging to implement in dedicated hardware for real-time emulation.
Jerry Jacob +2 more
doaj +2 more sources
Frequency Modulation Approach for High Power Density 100 Hz Piezoelectric Vibration Energy Harvester [PDF]
Sensors, 2022 Piezoelectric vibration energy harvester (PVEH) is a promising device for sustainable power supply of wireless sensor nodes (WSNs). PVEH is resonant and generates power under constant frequency vibration excitation of mechanical equipment.
Dengfeng Ju +9 more
doaj +2 more sources
Laser frequency stabilization by combining modulation transfer and frequency modulation spectroscopy [PDF]
Applied Optics, 2017 5 pages, 3 figures, submitted to ...
Zi, Fei +7 more
openaire +4 more sources
Deep frequency modulation interferometry
Optics Express, 2015 Laser interferometry with pm/Hz precision and multi-fringe dynamic range at low frequencies is a core technology to measure the motion of various objects (test masses) in space and ground based experiments for gravitational wave detection and geodesy. Even though available interferometer schemes are well understood, their construction remains complex ...
O. Gerberding
openaire +3 more sources
High-frequency gravitational wave detection via optical frequency modulation [PDF]
Physical Review D, 2023 High-frequency gravitational waves can be detected by observing the frequency modulation they impart on photons. We discuss fundamental limitations to this method related to the fact that it is impossible to construct a perfectly rigid detector.
T. Bringmann +3 more
semanticscholar +1 more source
Observation of the Rotational Doppler Effect With Structured Beams in Atomic Vapor
Frontiers in Physics, 2022 A vector beam with the spatial variation polarization has attracted keen interest and is progressively applied in quantum information, quantum communication, precision measurement, and so on.
Shuwei Qiu +6 more
doaj +1 more source
IEEE Access, 2021 As more and more unconventional energy sources are being applied in the field of power generation, the frequency fluctuation of power system becomes more and more serious.
Gaojun Meng +6 more
semanticscholar +1 more source
Frontiers in Energy Research, 2023 The increasing growth in installed capacity for renewable energy sources has progressively replaced traditional thermal power units as synchronous power contributors.
Chang Wang +9 more
doaj +1 more source