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Physical Review Letters, ISSN 0031-9007, 07/2018, Volume 121, Issue 3, p. 036402
We study the low-frequency dynamics of periodically driven one-dimensional systems hosting Floquet topological phases. We show, both analytically and... 
SYSTEM | PERIODICALLY DRIVEN | PHYSICS, MULTIDISCIPLINARY | INSULATOR | Dynamic tests | Normal distribution | Gaussian distribution | Variations | Very Low Frequencies | Low frequencies | Invariants | Physics - Mesoscale and Nanoscale Physics
Journal Article
Geophysical Research Letters, ISSN 0094-8276, 05/2015, Volume 42, Issue 9, pp. 3228 - 3232
We find very low frequency earthquakes (VLFEs) in Cascadia under northern Washington during 2011 episodic tremor and slip event. VLFEs are rich in... 
Cascadia | tremor | very low frequency earthquakes | ETS | VLFE | slow earthquakes | GEOSCIENCES, MULTIDISCIPLINARY | NON-VOLCANIC TREMOR | SLIP | Earthquakes | Correlation | Shear | Tremor | Seismic activity | Slip | Inversion | Low frequency | Seismic phenomena | Solutions | Energy | Efficiency | Searching | Frequency | Thrust | VLF | Tensors | Very low frequencies | Tremors
Journal Article
IEEE Sensors Journal, ISSN 1530-437X, 11/2017, Volume 17, Issue 21, pp. 7123 - 7130
We present a 2-D electric field imaging array and a new active method to image objects that are not direct sources of electric fields. The array is comprised... 
Electrodes | Image sensors | very low frequency | D-dot sensor | sensor array | Electric field imaging | Dielectrics | Electric fields | fringing fields | Sensor arrays | dielectrics | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | ENGINEERING, ELECTRICAL & ELECTRONIC
Journal Article
AEUE - International Journal of Electronics and Communications, ISSN 1434-8411, 07/2016, Volume 70, Issue 7, pp. 970 - 973
A low frequency relaxation oscillator is designed using a super-capacitor. An accurate analytical expression for the oscillation frequency is derived based on... 
Low frequency oscillators | Resonance | Super-capacitors | Circuit theory | PERFORMANCE | VERY-LOW FREQUENCY | MODEL | TELECOMMUNICATIONS | ENGINEERING, ELECTRICAL & ELECTRONIC | Circuit components | Electronic components industry | Capacitors | Analysis
Journal Article
Measurement Science and Technology, ISSN 0957-0233, 01/2016, Volume 27, Issue 2, p. 25018
Aimed at the absolute calibration of infrasound sensors at very low frequencies, an upgraded and improved infrasonic pistonphone has been developed. The... 
infrasound sensor | pistonphone | pressure leakage | composite feedback | calibration | MEASUREMENT MICROPHONES | INSTRUMENTS & INSTRUMENTATION | ENGINEERING, MULTIDISCIPLINARY | ACOUSTICAL ADMITTANCE | CYLINDRICAL CAVITIES | LASER PISTONPHONE | Leakage | Uncertainty | Very low frequencies | Infrasound | Sensors | Calibration | Low frequencies | Chambers
Journal Article
Geophysical Research Letters, ISSN 0094-8276, 05/2019, Volume 46, Issue 10, pp. 5217 - 5224
Journal Article
Geophysical Research Letters, ISSN 0094-8276, 02/2012, Volume 39, Issue 4
A total of 1314 very low frequency earthquakes (VLFEs) were identified along the Ryukyu trench from seismograms recorded at broadband networks in Japan (F-net)... 
thrust earthquake | subduction | very low frequency earthquake | GEOSCIENCES, MULTIDISCIPLINARY | slow slip | Ryukyu trench | Philippine Sea plate | Seismology | Earthquakes | Plate tectonics | Continental dynamics
Journal Article
Astronomy and Astrophysics, ISSN 0004-6361, 11/2018, Volume 619, p. A36
Journal Article
Measurement Science and Technology, ISSN 0957-0233, 06/2015, Volume 26, Issue 6, pp. 65002 - 9
The method for reducing the time of impedance measurements at very low frequencies was proposed and implemented. The reduction was achieved by using impedance... 
impedance spectroscopy | Monte Carlo experiment | sine fitting | ellipse fitting | low frequency | PVD COATED STEELS | SENSORS | EIS | INSTRUMENTS & INSTRUMENTATION | ENGINEERING, MULTIDISCIPLINARY | SPECTROSCOPY | NACL AQUEOUS-SOLUTION | CELL | CORROSION BEHAVIOR | Reduction | Impedance measurement | Fittings | Algorithms | Very low frequencies | Excitation | Impedance | Ellipses | Sampling
Journal Article
Mechanical Systems and Signal Processing, ISSN 0888-3270, 06/2019, Volume 125, pp. 215 - 228
This paper presents a novel design of a nonlinear kinetic energy harvester for very low excitation frequencies below 10 Hz. The design is based on a proof... 
Human motion | Energy harvesting | Nonlinear systems | Low frequency | Electromagnetic induction | Tusi couple | DESIGN | MOTION | POWER | ELECTROMAGNETIC GENERATOR | ENGINEERING, MECHANICAL | Electromagnetism | Mechanical engineering | Harvesting | Analysis | Force and energy | Computer simulation | Very Low Frequencies | Excitation | Low frequencies | Acceleration | Kinetic energy
Journal Article
Geophysical Research Letters, ISSN 0094-8276, 01/2018, Volume 45, Issue 2, pp. 733 - 738
We investigated long‐term changes in the activity of deep very low frequency earthquakes (VLFEs) in western Shikoku, southwest part of the Nankai subduction... 
very low frequency earthquake | seismic quiescence | Nankai subduction zone | temporal modulation | slow earthquake | SLOW SLIP EVENTS | SUBDUCTION ZONE | TREMOR | GEOSCIENCES, MULTIDISCIPLINARY | TERM | BUNGO CHANNEL | Seismic activity | Subduction (geology) | Slip | Low frequency | Seismic phenomena | Subduction | Interfaces | Subduction zones | Earthquakes | Frequency | Coupling | Tremors | Low frequencies
Journal Article