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1975 1
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16 results

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Page 1
Investigation of a Novel Ultra-Low-Frequency Rotational Energy Harvester Based on a Double-Frequency Up-Conversion Mechanism.
Li N, Xia H, Yang C, Luo T, Qin L. Li N, et al. Micromachines (Basel). 2023 Aug 20;14(8):1645. doi: 10.3390/mi14081645. Micromachines (Basel). 2023. PMID: 37630182 Free PMC article.
Therefore, a novel rotational energy harvester (REH) with a double-frequency up-conversion mechanism was proposed in this study. ...During operation, the relative rotation between the slider and the shell induced the paddles on the slider to strike the piezoelectric …
Therefore, a novel rotational energy harvester (REH) with a double-frequency up-conversion mechanism was proposed in this stud …
Frequency Modulated Parametric Oscillation for Antenna Powered Wireless Transmission of Voltage Sensing Signals.
Qian W, Qian C. Qian W, et al. IEEE Trans Biomed Circuits Syst. 2019 Dec;13(6):1783-1791. doi: 10.1109/TBCAS.2019.2951514. Epub 2019 Nov 5. IEEE Trans Biomed Circuits Syst. 2019. PMID: 31714233 Free PMC article.
However, such passive sensors have limited remote detectability and temporal resolution, especially for smaller frequency shifts that would require repetitive averaging for acceptable measurement accuracy. To overcome these limitations, a double frequency parametric …
However, such passive sensors have limited remote detectability and temporal resolution, especially for smaller frequency shifts that would …
Wireless Powered Encoding and Broadcasting of Frequency Modulated Detection Signals.
Qian W, Yu X, Qian C. Qian W, et al. IEEE Access. 2020;8:200450-200460. doi: 10.1109/access.2020.3035938. Epub 2020 Nov 4. IEEE Access. 2020. PMID: 33828933 Free PMC article.
Here, a compact and low-power wireless modulator is introduced to directly encode input RF signals onto its oscillation carrier wave. The modulator consists of a double frequency parametric resonator that is overlaid with a single frequency passive resonator …
Here, a compact and low-power wireless modulator is introduced to directly encode input RF signals onto its oscillation carrier wave. …
Nonlinear dynamics of a thin liquid film on an axially oscillating cylindrical surface subjected to double-frequency forcing.
Haimovich O, Oron A. Haimovich O, et al. Phys Rev E Stat Nonlin Soft Matter Phys. 2013 May;87(5):052403. doi: 10.1103/PhysRevE.87.052403. Epub 2013 May 20. Phys Rev E Stat Nonlin Soft Matter Phys. 2013. PMID: 23767550
The nonlinear dynamics of a thin axisymmetric liquid film on a horizontal cylindrical substrate subjected to an axial double-frequency forcing that consists of two components of different amplitudes and frequencies and a possible phase shift is considered in this pa …
The nonlinear dynamics of a thin axisymmetric liquid film on a horizontal cylindrical substrate subjected to an axial double-frequ …
Frequency doubling by active in vivo motility of mechanosensory neurons in the mosquito ear.
Windmill JFC, Jackson JC, Pook VG, Robert D. Windmill JFC, et al. R Soc Open Sci. 2018 Jan 10;5(1):171082. doi: 10.1098/rsos.171082. eCollection 2018 Jan. R Soc Open Sci. 2018. PMID: 29410822 Free PMC article.
Here, using in situ and in vivo atomic force microscopy, we measure and characterize the mechanical response of mechanosensory neuron units during forced oscillations of the hearing organ. Mechanoreceptor responses exhibit the hallmark of nonlinear feedback for force gener …
Here, using in situ and in vivo atomic force microscopy, we measure and characterize the mechanical response of mechanosensory neuron units …
Spin current and second harmonic generation in non-collinear magnetic systems: the hydrodynamic model.
Karashtin EA, Fraerman AA. Karashtin EA, et al. J Phys Condens Matter. 2018 Apr 25;30(16):165801. doi: 10.1088/1361-648X/aab56d. Epub 2018 Mar 9. J Phys Condens Matter. 2018. PMID: 29521275
The hydrodynamic model is used to unravel the mechanism of a novel effect of the double frequency signal generation that is attributed to the spin current. ...Together with the linear velocity response this leads to the generation of the double frequency …
The hydrodynamic model is used to unravel the mechanism of a novel effect of the double frequency signal generation that is at …
Quadrupole mass filter acceptance in stability island created by double-frequency quadrupole excitation.
Konenkov NV, Korzhavchikov MA, Stepanov VA, Trunina OE. Konenkov NV, et al. Eur J Mass Spectrom (Chichester). 2018 Aug;24(4):315-321. doi: 10.1177/1469066718760164. Epub 2018 Feb 26. Eur J Mass Spectrom (Chichester). 2018. PMID: 29482362
Increase in quadrupole mass filter resolution at separation in narrow band stability island (X-band) formed by biharmonic resonance excitation of ion oscillation is discussed. X-band and the normal working quadrupole mass filter modes are compared at theoretical resolution …
Increase in quadrupole mass filter resolution at separation in narrow band stability island (X-band) formed by biharmonic resonance excitati …
The modulational method of quartz crystal oscillator frequency stabilization.
Shmaliy YS. Shmaliy YS. IEEE Trans Ultrason Ferroelectr Freq Control. 1998;45(6):1476-84. doi: 10.1109/58.738287. IEEE Trans Ultrason Ferroelectr Freq Control. 1998. PMID: 18249995
The method developing the trend is called a modulational method and is based on the use of the reference properties of crystal resonator natural bulk vibrations (double-frequency and multi-frequency oscillators are not used in this case). The concept is based …
The method developing the trend is called a modulational method and is based on the use of the reference properties of crystal resonator nat …
Dynamics of human walking at steady speeds.
Kokshenev VB. Kokshenev VB. Phys Rev Lett. 2004 Nov 12;93(20):208101. doi: 10.1103/PhysRevLett.93.208101. Epub 2004 Nov 10. Phys Rev Lett. 2004. PMID: 15600973
At a certain speed, rectilinear motion of the center of mass with its backward rotation along a shortened hypocycloid is ensured by double-frequency nonlinear oscillations, whose energy cost is 1% of the external work. ...
At a certain speed, rectilinear motion of the center of mass with its backward rotation along a shortened hypocycloid is ensured by doubl …
Double frequency narrow-band grazing incidence pulsed dye lasers.
Prior Y. Prior Y. Rev Sci Instrum. 1979 Feb;50(2):259. doi: 10.1063/1.1135809. Rev Sci Instrum. 1979. PMID: 18699486
A double frequency operation of the recently introduced grazing angle dye laser is demonstrated. By using two mirrors to reflect different order of diffraction the laser oscillates at two different frequencies, independently tunable over the entire gain profi …
A double frequency operation of the recently introduced grazing angle dye laser is demonstrated. By using two mirrors to refle …
16 results