Results 71 to 80 of about 23,291 (287)

On abolishing symmetry requirements in the formulation of a five-level selective harmonic elimination pulse-width modulation technique [PDF]

, 2006
Selective harmonic elimination pulse width modulation (SHE-PWM) techniques offer a tight control of the harmonic spectrum of a given voltage waveform generated by a power electronic converter along with a low number of switching transitions.
Agelidis, V.G., Dahidah, M.S.A., Rao, M.V.   +2 more
core   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

Selective Harmonic Elimination in Multimodule Three-Phase Current-Source Converters

IEEE Transactions on Power Electronics, 2010
Modular current-source converter (MCSC) structures can enhance the current capacity and improve the power quality of converters in medium-voltage pulsewidth-modulated applications. An MCSC uses individual three-phase modules in a shunt connection to share the total power in a symmetrical manner.
Guzman, Johan I., Espinoza, Jose R., Moran, Luis A., Joos, Geza   +3 more
openaire   +3 more sources

Multilayer Soft Photonic Arrays Inspired by Cephalopod Skin for High‐Density, Independent, and Multimodal Actuation

Advanced Functional Materials, EarlyView.
A vertically stacked, DEA‐driven photonic array inspired by cephalopod skin, featuring highly crystalline colloidal crystal gels with vivid color, low FWHM and scalability is presented. The multilayer design removes lateral pixel interference, achieving near‐100% fill factor with fully independent RGB actuation.
Maga Kim, Imbo Kong, Do Yoon Kim, Jaeyoung Choi, Seong‐Yu Choi, Yun Hyeok Lee, Sihwan Lee, Byung Ik Park, Gimin Sung, In‐Suk Choi, Wook Sung Kim, Jeong‐Yun Sun   +11 more
wiley   +1 more source

Toward Scalable Solutions for Silver‐Based Gas Diffusion Electrode Fabrication for the Electrochemical Conversion of CO2 – A Perspective

Advanced Functional Materials, EarlyView.
In this study, the preparation techniques for silver‐based gas diffusion electrodes used for the electrochemical reduction of carbon dioxide (eCO2R) are systematically reviewed and compared with respect to their scalability. In addition, physics‐based and data‐driven modeling approaches are discussed, and a perspective is given on how modeling can aid ...
Simon Emken, K. Ashoke Raman, Alexander Bauer, Violeta Karyofylli, Eva Jodat, André Karl, Rüdiger‐A. Eichel   +6 more
wiley   +1 more source

Reduced Switching-Frequency Active Harmonic Elimination for Multilevel Converters [PDF]

, 2008
This paper presents a reduced switching-frequency active-harmonic-elimination method (RAHEM) to eliminate any number of specific order harmonics of multilevel converters.
Chiasson, John, Du, Zhong, Ozpineci, Burak, Tolbert, Leon M.   +3 more
core   +2 more sources

Contact Lens with Moiré Patterns for High‐Precision Eye Tracking

Advanced Functional Materials, EarlyView.
This work presents a passive contact lens for high‐precision eye tracking, integrating a microscopic moiré grating label. The parallax‐induced shift of macroscopic moiré patterns enables angle measurement with 0.28° precision using a standard camera under ambient light.
Ilia M. Fradkin, Roman V. Kirtaev, Mikhail S. Mironov, Dmitriy V. Grudinin, Alexander A. Marchenko, Marina M. Chugunova, Valentin R. Solovei, Alexander V. Syuy, Andrey A. Vyshnevyy, Ilya P. Radko, Aleksey V. Arsenin, Valentyn S. Volkov   +11 more
wiley   +1 more source

Generalized formulation of multilevel selective harmonic elimination PWM: Case I-Non-Equal DC Sources [PDF]

, 2006
The paper presents optimal solutions for eliminating harmonics from the output waveform of a multilevel staircase pulse-width modulation (PWM) method with non-equal dc sources.
Agelidis, V.G., Dahidah, M.S.A.
core   +1 more source

Cooling atomic motion with quantum interference [PDF]

, 2002
We theoretically investigate the quantum dynamics of the center of mass of trapped atoms, whose internal degrees of freedom are driven in a $\Lambda$-shaped configuration with the lasers tuned at two-photon resonance.
A. Aspect, A. Aspect, A.J. Kerman, A.S. Manka, B. Lounis, C. Cohen-Tannoudji, C. Monroe, C.F. Roos, Ch. Roos, D. Jaksch, D.-J. Han, D.J. Wineland, F. Diedrich, F. Schmidt-Kaler, G. Janik, G. Morigi, G. Morigi, G. Nienhuis, Giovanna Morigi, I. Marzoli, J. Javanainen, J.I. Cirac, J.I. Cirac, L.M. Narducci, M. Lindberg, M. Lindberg, M. Morinaga, R. Dum, S. Stenholm, S.E. Harris, Y. Stalgies   +30 more
core   +3 more sources

Chiral SURMOFs for Vibrational Circular Dichroism: Multiscale Modeling and Experimental Insights

Advanced Functional Materials, EarlyView.
The use of solid‐state vibrational circular dichroism (VCD) for MOFs is still somewhat unexplored, and in this work, it is shown that chiral surface‐anchored MOFs (SURMOFs) grown on CaF2 provide an excellent platform for VCD. Experimental results are validated through multiscale modeling, showing strong agreement across multiple spectroscopic ...
Ana C. Fingolo, Nadine von Coelln, Benedikt Zerulla, Marjan Krstić, Christian Huck, Thomas G. Mayerhöfer, Christoph Krafft, Petra Tegeder, Carsten Rockstuhl, Christof Wöll   +9 more
wiley   +1 more source