Results 111 to 120 of about 2,541,468 (293)

Internal Resonance Mismatch‐Controlled Dissipative Bistability Collapse in Coupled Micromechanical Oscillators

Advanced Science, EarlyView.
This paper reveals internal resonance mismatch‐controlled dissipative bistability collapse in a coupled micromechanical resonator. Tuning δIR changes both internal‐mode amplitude and phase‐dependent feedback. For negative mismatch, Duffing bistability survives.
Jianlin Chen, Xin Zhou, Takashiro Tsukamoto, Nan Wang, Shuji Tanaka   +4 more
wiley   +1 more source

Giant Direct Magnetoelectric Effect in Nanocomposite CoFe2O4:PVDF‐TrFE Thin Films

Advanced Science, EarlyView.
A novel three‐step grow‐etch‐fill fabrication approach creates structured cobalt ferrite/ferroelectric polymer nanocomposites with high interfacial areas. Driven by efficient strain‐mediated coupling, this crystalline system achieves a giant room‐temperature magnetoelectric coefficient nearly two orders of magnitude higher than other CFO/PVDF‐TrFE thin
Muireann de h‐Óra, Lynette Keeney, Rui Miguel Gonçalves Carvalho, Aliona Nicolenco, Tuhin Maity, Jordi Sort, Luís Amorim, Pedro Martins, Judith MacManus‐Driscoll   +8 more
wiley   +1 more source

Compensation characterization of the UPQC system under an improved nonlinear controller based on the MSTOGI-PLL device

Frontiers in Energy Research
To solve the delay problem of a unified power quality conditioner (UPQC) system during the separation of the fundamental positive-order components and to better filter out the DC and harmonic components to realize accurate phase locking, a mixed second ...
Yuting Yu, Yuting Yu, Dan Li, Yanting Chu, Yanting Chu   +4 more
doaj   +1 more source

All-fiber Mamyshev oscillator with high average power and harmonic mode-locking

, 2020
International audienceIn this Letter, we present the first, to the best of our knowledge, experimental demonstration of high-order harmonic mode-locking of an all-fiber Mamyshev oscillator.
Poeydebat, Etienne, Vanvincq, Olivier, Hugonnot, Emmanuel, Bouwmans, Géraud, Scol, Florent   +4 more
core   +1 more source

Passive Metasurface Tweezers for Multi‐Scale Orbital Transport and Trapping on Elastic Plates

Advanced Science, EarlyView.
Passive labyrinthine phase encoding converts single‐channel excitation into localized flexural‐wave vortices with programmable orbital angular momentum. The resulting vortex fields enable cross‐scale particle manipulation, including orbital transport, central confinement, and rotational actuation.
Zeyang Bi, Zhiqiang Li, Yunkang Ren, Yugui Peng, Xuefeng Zhu, Liuxian Zhao, Jun Yang, Chuanxing Bi   +7 more
wiley   +1 more source

Programmable Information Processing With Reconfigurable Self‐Contact Variable Stiffness Mechanical Metamaterial

Advanced Science, EarlyView.
Reconfigurable self‐contact variable stiffness metamaterials based on shape memory polymers enable programmable stiffness switching. Static arrays store and encrypt information with immunity to electromagnetic interference, while asymmetric stiffness converts symmetric vibration into directional matter transport.
Huadong Qin, Wenyu Zhu, Xin Wang, Cheng Shen, Li Cheng, Tian Jian Lu, Terence Xiaoteng Liu, Han Meng   +7 more
wiley   +1 more source

Preparation of amorphous silicon-doped Y2O3 aerogel enabling nonlinear optical features for ultrafast photonics

Nanophotonics
Amorphous aerogels with the microscopic nanoscale three-dimensional meshes provide superb platforms for investigating unique physicochemical properties.
Zhao Qingxi, Chu Hongwei, Pan Zhongben, Liu Benxue, Pan Han, Zhao Shengzhi, Li Dechun   +6 more
doaj   +1 more source

High frequency mode-locking of diode lasers

, 2010
The mode-locked operation of a 160 GHz passively mode-locked AlGaInAs laser using a compound cavity formed by single deeply etched intracavity reflectors has been investigated.
P. Stolarz, Haji, M., Bryce, A.C., M. Haji, Stolarz, P., A. C. Bryce, L. Hou, Hou, L., Dylewicz, R., R. Dylewicz   +9 more
core   +1 more source

Gigahertz Harmonic Mode-Locking of Fiber Laser Stabilized by Acoustic Resonances in Silica Microfiber

, 2020
We use intense optoacoustic interactions involving the acoustic resonances confined in high-quality 51-cm-long silica microfibers to stabilize the harmonic mode-locking of fiber lasers at gigahertz repetition rates, which is controllable via tuning the ...
Moon, Kyung Jun, Han, Dae Seok, Kang, Myeong Soo, Nam, Kee Hwan, Ha, Chang Kyun   +4 more
core   +1 more source

Green's Functions of Non‐Hermitian Systems at Exceptional Deficiency

Advanced Science, EarlyView.
We analyze the responses of a non‐Hermitian lattice system under the condition of exceptional deficiency (ED), when all bands in the system are formed by exceptional points. Using the frequency domain, we identify novel steady‐state responses that root in the broadband super‐Lorentzian Green's function (GF).
Congwei Lu, Guancong Ma
wiley   +1 more source