Results 71 to 80 of about 34,535 (289)

Data driven optimal filtering for phase and frequency of noisy oscillations: application to vortex flowmetering

, 2003
A new method for extracting the phase of oscillations from noisy time series is proposed. To obtain the phase, the signal is filtered in such a way that the filter output has minimal relative variation in the amplitude (MIRVA) over all filters with ...
A. G. Rossberg, A. Stefanovska, A. Stefanovska, A.S. Pikovsky, B. Blasius, B. Boashash, B. Schack, D. Gabor, D.J. DeShazer, D.S. Broomhead, H. Gasquet, J. Bhattacharya, J. Bhattacharya, J. Theiler, J. Timmer, J.-P. Lachaux, J.E. Amadi-Echendy, J.Y. Chen, K. Bartholomé, K. Josić, M. Arnold, M.G. Rosenblum, M.G. Rosenblum, M.G. Rosenblum, N.B. Janson, N.B. Janson, N.B. Janson, N.F. Rulkov, P. Tass, P.Y. Ktonas, R. Quian Quiroga, R.C. Mottram, S. Boccaletti, T. Sauer, T. Yalçınkaya, U. Parlitz, V.S. Anishchenko, W.J. Freeman   +37 more
core   +1 more source

Ultrafast Raman laser mode-locked by nanotubes [PDF]

, 2011
We demonstrate passive mode-locking of a Raman fiber laser using a nanotube-based saturable absorber coupled to a net normal dispersion cavity. This generates highly chirped 500 ps pulses.
A. C. Ferrari, Aguergaray, Bonaccorso, C. E. S. Castellani, Chamorovskiy, Chamorovskiy, Chernikov, Chestnut, Chong, D. Popa, E. Flahaut, E. J. R. Kelleher, Fernandez, Hasan, J. C. Travers, J. R. Taylor, Kelleher, Kivistö, Kobtsev, Osswald, Renninger, Renninger, S. V. Popov, Schröder, Sun, Sun, T. Hasan, Wang, Wise, Z. Sun   +29 more
core   +3 more sources

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Picosecond Mode-Locking And X-Band Modulation Of Semiconductor Lasers [PDF]

, 1983
Recent developments in two areas of high speed semiconductor lasers will be addressed: (1) passive mode-locking of a segmented-contact semiconductor laser with a reliable, controllable saturable absorber which produces stable picosecond optical pulses ...
Harder, C., Lau, K., Yariv, A.
core   +1 more source

Mode locking mechanism in Fourier-domain mode-locked optoelectronic oscillators

Optics Express
Fourier-domain mode-locked (FDML) optoelectronic oscillators (OEOs) are regarded as a promising candidate to generate linearly chirped microwave waveforms (LCMWs) with large time-bandwidth products. Nevertheless, up to date, the mode locking mechanism in FDML-OEOs is still not clear enough.
Lingjie Zhang, Yilin Wu, Huan Tian, Zhen Zeng, Yaowen Zhang, Zhiyao Zhang, Yali Zhang, Shangjian Zhang, Heping Li, Yong Liu   +9 more
openaire   +2 more sources

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

Mode-Locking in Quantum-Hall-Effect Point Contacts

, 1998
We study the effect of an ac drive on the current-voltage (I-V) characteristics of a tunnel junction between two fractional Quantum Hall fluids at filling $\nu ^{-1}$ an odd integer.
A. O. Caldeira, C. A. Hamilton, C. L. Kane, D. E. McCumber, D. E. McCumber, E. Ben-Jacob, F. P. Milliken, H. D. Hahlbohm, H. H. Lin, J. D. White, K. Moon, L. J. Geerligs, L. J. Geerligs, L. P. Kouwenhoven, L. P. Kouwenhoven, M. H. Jensen, M. P. A. Fisher, M. Stone, M. Ya. Azbel, Matthew P. A. Fisher, P. C. Martin, P. Fendley, P. Fendley, P. Russer, S. Shapiro, W. C. Stewart, W. J. Johnson, X. G. Wen, X. G. Wen, X. G. Wen, X. G. Wen, Y. Nagamune   +31 more
core   +1 more source

Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio

Advanced Engineering Materials, EarlyView.
This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov, Matheus Roberto Bellé, Anton Yehorov, Julia Richter, Olena Volkova   +4 more
wiley   +1 more source

2D Saturable Absorbers for Fibre Lasers [PDF]

, 2015
© 2015.Two-dimensional (2D) nanomaterials are an emergent and promising platform for future photonic and optoelectronic applications. Here, we review recent progress demonstrating the application of 2D nanomaterials as versatile, wideband saturable ...
Kelleher, E, Woodward, R
core   +2 more sources

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source