Results 81 to 90 of about 2,978,769 (241)

Dynamic Behavioral Profiling for User Authentication Using Binary Pressure Sequences and Grip Patterns via a Soft Stacking Ensemble

Advanced Intelligent Systems, EarlyView.
A smartphone‐embedded fabric‐strip sensing interface captures side‐pressure sequences and grip‐position patterns for behavioral authentication. Probability‐based soft stacking integrates class‐wise predictive probabilities from multiple learners to improve verification‐style discrimination, supporting a sensor‐integrated mobile‐security framework that ...
Wonki Hong
wiley   +1 more source

Direct Kerr-frequency-comb atomic spectroscopy

, 2018
Microresonator-based soliton frequency combs - microcombs - have recently emerged to offer low-noise, photonic-chip sources for optical measurements.
Jordan R. Stone (3963479), Zachary Newman (6613949), Kerry Vahala (7146992), Myoung-Gyun Suh (12736199), Songbai Kang (4961203), Daniel C. Cole (3961250), John Kitching (14387631), Scott A Diddams (17496510), Connor Fredrick (4961206), Liron Stern (1491877), Scott B. Papp (3961244)   +10 more
core   +1 more source

Temporal Hilbert transform based on an integrated frequency comb source

, 2016
An experimentally demonstrated temporal Hilbert transformer based on an integrated optical frequency comb source is exploited to obtain the temporal Hilbert transform of a Gaussian pulse with a full-width half maximum duration of 0.12ns.
Sai T. Chu, Brent E. Little, Jochen Schrӧeder, Shoeiby, Mehrdad, David J. Moss, Little, Brent E., Thach G. Nguyen, Roberto Morandotti, Nguyen, Thach G., Mitchell, Arnan, Morandotti, Roberto, Mehrdad Shoeiby, Schroeder, Jochen, Chu, Sai T., Moss, David J., Arnan Mitchell   +15 more
core   +1 more source

The Effect of Input Pulse on the Soliton Generation in Microresonators

مجلة علوم ذي قار
The effect of the input pulse (chirped pulse) on the generation of soliton wave and optical frequency comb in microresonators was studied. The problem was solved numerically using the Lugiato-Lefever equation and the Fourier method by MATLAB program. The
Hawraa Alhassen, H. A. Sultan
doaj   +1 more source

Single ion fluorescence excited with a single mode of an UV frequency comb

Nature Communications, 2017
Frequency combs are useful tools in high precision measurement including atomic transitions and atomic clocks. Here the authors demonstrate direct frequency comb spectroscopy to shorter wavelengths by probing a transition frequency in a trapped Mg+ ion ...
Akira Ozawa, Josue Davila-Rodriguez, James R. Bounds, Hans A. Schuessler, Theodor W. Hänsch, Thomas Udem   +5 more
doaj   +1 more source

Polarization‐Dependence of Nonlinear Optical Effects in Silicon: The Case of Ultrafast Processing

Advanced Physics Research, EarlyView.
The dependence of the input polarization for the nonlinear optical propagation in silicon is investigated theoretically and experimentally. The perturbative regime is examined using pump‐probe shadowgraphy and nonlinear transmission, whereas the case of permanent laser‐induced modifications is addressed using a combination of Raman micro‐spectroscopy ...
Namig Alasgarzade, Alessandro Alberucci, Stree V. Arumugam, Markus Blothe, Maxime Chambonneau, Chandroth P. Jisha, Stefan Nolte   +6 more
wiley   +1 more source

A chip-based optoelectronic-oscillator frequency comb

eLight
Microresonator-based Kerr frequency combs (“Kerr microcombs”) constitute chip-scale frequency combs of broad spectral bandwidth and repetition rate ranging from gigahertz to terahertz.
Jinbao Long, Zhongkai Wang, Huanfa Peng, Wei Sun, Dengke Chen, Shichang Li, Shuyi Li, Yi-Han Luo, Jijun He, Lan Gao, Baoqi Shi, Chen Shen, Linze Li, Tianyu Long, Baile Chen, Zhenyu Li, Junqiu Liu   +16 more
doaj   +1 more source

Extreme ultraviolet frequency comb metrology [PDF]

, 2010
The remarkable precision of frequency-comb (FC) lasers is transferred to the extreme ultraviolet (XUV, wavelengths shorter than 100nm), a frequency region previously not accessible to these devices.
Ubachs, W.M.G., Kandula, D.Z., Wim Ubachs, Eikema, K.S.E., Dominik Z. Kandula, Ubachs, W.M.G.; id_orcid, Gohle, C., Christoph Gohle, Kjeld S. E. Eikema, Pinkert, T.J., Tjeerd J. Pinkert   +10 more
core   +2 more sources

SOX6 is expressed in various cell lineages in the developing mouse heart and contributes to proper valvuloseptal development

The Anatomical Record, EarlyView.
Abstract Cells derived from the endocardium, epicardium, cardiac neural crest, and second heart field play a critical role in the formation of the valvuloseptal structures of the heart. Previous studies have shown that the expression of the transcription factor SOX9 in these cell populations is essential in the regulation of this process.
Hannah G. Tarolli, Andrew B. Harvey, Inara Devji, Raymond N. Deepe, Jenna R. Drummond, Renélyn A. Wolters, Andy Wessels   +6 more
wiley   +1 more source

An optical frequency comb tied to GPS for laser frequency/wavelength calibration

, 2010
Optical frequency combs can be employed over a broad spectral range to calibrate laser frequency or vacuum wavelength. This article describes procedures and techniques utilized in the Precision Engineering Division of NIST (National Institute of ...
Stone, Jack A.; Egan, Patrick
core   +1 more source