Results 21 to 30 of about 204,662 (249)

Charge density wave in hidden order state of URu$_2$Si$_2$

, 2010
We argue that the hidden order state in URu$_2$Si$_2$ will induce a charge density wave. The modulation vector of the charge density wave will be twice that of the hidden order state, $Q_{CDW} = 2Q_{HO}$.
Alexander V Balatsky, Bourdarot F, Dubi Y Balatsky A V, Ikeda Y, Jung-Jung Su, Peter Wölfle, Wölfle P Dubi Y Balatsky A V, Yonatan Dubi   +7 more
core   +1 more source

Synchronized Carrier-Wave and High-Frequency Square-Wave Periodic Modulation Strategy for Acoustic Noise Reduction in Sensorless PMSM Drives

Energies
High-frequency injection (HFI) is widely adopted for the sensorless control of permanent magnet synchronous motors (PMSMs) at low speeds. However, conventional HFI strategies relying on fixed-frequency carrier modulation and square-wave injection ...
Wentao Zhang, Sizhe Cheng, Pengcheng Zhu, Yiwei Liu, Jiming Zou   +4 more
doaj   +1 more source

Dynamic performance of terahertz quantum cascade laser with double optical feedbacks: Role of the external cavity

Results in Physics, 2023
The dynamic performance of a terahertz (THz) quantum cascade laser (QCL) with double optical feedbacks (DOFs) is carefully studied within the framework of single-mode rate equations.
Y. Mao, W. Feng, Y.H. Zheng, C. Wang, J.C. Cao   +4 more
doaj   +1 more source

Phase relaxation of Faraday surface waves [PDF]

, 2001
Surface waves on a liquid air interface excited by a vertical vibration of a fluid layer (Faraday waves) are employed to investigate the phase relaxation of ideally ordered patterns. By means of a combined frequency-amplitude modulation of the excitation
Kityk, A. V., Knorr, K., Mueller, H. W., Wagner, C.   +3 more
core   +1 more source

Simulation Study of In-Phase and Out-Phase Enhanced Absorption of Graphene Based on Parity–Time Symmetry One-Dimensional Photonic Crystal Structure

Crystals, 2021
In the field of modern optical communication systems and photoelectric detection, new components with complex functions and excellent performance are urgently needed.
Lingjun Yi, Changhong Li
doaj   +1 more source

Recent achievments in square-wave voltammetry – A review

Macedonian Journal of Chemistry and Chemical Engineering, 2014
Recent advances in square-wave voltammetry for analytical purposes as well as for studying electrode mechanisms and kinetics are reviewed, mainly covering results published in the last decade.
Valentin Mirceski, Rubin Gulaboski
doaj   +1 more source

Spin-current modulation and square-wave transmission through periodically stubbed electron waveguides

, 2002
Ballistic spin transport through waveguides, with symmetric or asymmetric double stubs attached to them periodically, is studied systematically in the presence of a weak spin-orbit coupling that makes the electrons precess.
A.A. Kiseley, B. Das, C.M. Hu, D. Grundler, D. Grundler, D. Stein, E.I. Rashba, E.I. Rashba, F. M. Peeters, F. Mireles, F. Sols, G. Engels, G. Kirczenow, G. Papp, G. Papp, G. Schmidt, H. Wu, H.J. Zhu, H.L. Stormer, H.X. Tang, J. Luo, J. Luo, J. Nitta, J.M. Kikkawa, K. Chang, K. Chang, L. Loureiro da Silva, L.W. Molenkamp, M.A. Boselli, P. Debray, P. Vasilopoulos, P.R. Hammar, R. Akis, R. Akis, R. Akis, R. Fiederling, R. Fitzgerald, R. Winkler, S. Datta, S. Datta, S. Gardelis, X. F. Wang, Y. Ohno, Y.A. Bychkov   +43 more
core   +1 more source

Extended Overmodulation Operation of Space Vector PWM for Traction Motor Control at Low Switching Frequency

IEEE Access, 2022
There are several benefits of fully utilization of DC link voltage in railway traction applications in terms of increasing inverter output voltage, satisfying power-torque demand and component sizing.
Gokhan Altintas, Derya Ahmet Kocabas
doaj   +1 more source

Cooling of a levitated nanoparticle with digital parametric feedback

, 2019
The motion control of a levitated nanoparticle plays a central role in optical levitation for fundamental studies and practical applications. Here, we presented a digital parametric feedback cooling based on switching between two trapping laser intensity
Guo, Guang-Can, Sun, Fang-Wen, Zheng, Yu
core   +1 more source

Optimised frequency modulation for continuous-wave optical magnetic resonance sensing using nitrogen-vacancy ensembles [PDF]

, 2017
Magnetometers based on ensembles of nitrogen-vacancy centres are a promising platform for continuously sensing static and low-frequency magnetic fields.
Ahmadi, Sepehr, Andersen, Ulrik Lund, El-Ella, Haitham, Huck, Alexander, Wojciechowski, Adam   +4 more
core   +2 more sources