Results 121 to 130 of about 2,541,468 (293)

Shear‐Mode Direct Piezoelectric Response of Ferroelectric Nematic Liquid Crystals

Advanced Science, EarlyView.
Periodic shear‐induced electric current measurements are reported on two archetypic ferroelectric nematic liquid crystal compounds. From the temperature, frequency and shear angle dependent results of the first and second harmonic current signals together with temperature and oscillatory rheology measurements, the effective piezoelectric coupling ...
Péter Salamon, Marcell Tibor Máthé, Hiroya Nishikawa, Fumito Araoka, Antal Jákli   +4 more
wiley   +1 more source

Harmonics-Assisted 50-Fold Optical Phase Amplification with a Self-Mixing Thin-Slice Nd:GdVO₄ Laser with Wide-Aperture Laser-Diode Pumping

Photonics
Harmonic-assisted phase amplification was investigated in a 300-µm-thick Nd:GdVO4 laser with coated end mirrors in the self-mixing interference scheme. The key event is the self-induced hybrid skew cosh Gaussian (abbreviated as skew ch-G)-type transverse
Kenju Otsuka, Seiichi Sudo
doaj   +1 more source

Use of second-harmonic generation in mode locking of continuously operating solid-state lasers

, 1994
An analysis is made of effective mode locking in continuously operating solid-state lasers by modulators based on second-harmonic generation. A new type of modulator is proposed in which a radiation field replica, attenuated as a result of harmonic ...
Mikhailov, V.P., Poloiko, I.G., Kalashnikov, V.L.   +2 more
core   +1 more source

Emergence of Unconventional Magnetic Order in Strain‐Engineered RuO2/TiO2 Superlattices

Advanced Science, EarlyView.
Epitaxial strain activates unconventional magnetism in rutile RuO2, absent in bulk or relaxed RuO2. Polarized neutron reflectometry with atomic‐layer resolution directly reveals finite magnetization confined to RuO2 layers in fully strained RuO2/TiO2 superlattices on TiO2 (110).
Seung Gyo Jeong, Seungjun Lee, Jin Young Oh, Bonnie Y. X. Lin, Anand Santhosh, Sehwan Song, Sungkyun Park, James M. LeBeau, Alexander J. Grutter, Woo Seok Choi, Tony Low, Valeria Lauter, Bharat Jalan   +12 more
wiley   +1 more source

40 GHz Mode-Locked Semiconductor Lasers: Theory, Simulations and Experiment

, 2006
We study both theoretically and experimentally typical operation regimes of 40 GHz monolithic mode-locked lasers. The underlying Traveling Wave Equation model reveals quantitative agreement for characteristics of the fundamental mode-locking as pulse ...
Bandelow, Uwe, Vladimirov, Andrei G., Hüttl, Bernd, Kaiser, Ronald, Radziunas, Mindaugas   +4 more
core   +1 more source

A Molecularly Defined Midbrain Circuit Mechanism for Sound‐Driven Defensive Behavior and Anxiety

Advanced Science, EarlyView.
Schematic diagram showing the Cbln2+ ICx–dPAG circuit for sound‐driven defensive and anxiety‐like behaviors. ABSTRACT The innate defense behaviors in response to threatening sounds play a fundamental role in survival. However, the neural circuits that detect threat‐relevant auditory cues and transform them into defensive behaviors remain poorly defined.
Jie Cao, Xingxing Lai, Lifang Huo, Zhouyuan Zheng, Qian Zhang, Zhimin Ye, Panpan Wan, Chao Ma, Congping Shang   +8 more
wiley   +1 more source

Sea Cucumber‐Inspired Double‐Network Biopolymer Hydrogels for Programmable Soft Machines

Advanced Science, EarlyView.
Inspired by the mutable dermis of sea cucumbers, the collagen‐alginate double‐network elastomeric (CoDE) hydrogel achieves programmable, recoverable, and functional mechanical behavior. The CoDE hydrogel mimics the mutable stiffness of the sea cucumber dermis through a densified collagen cryogel scaffold that is secondarily reinforced by a dissipative,
Luo Yan, He Xiao, Purohit Prashant K., Vining Kyle H.   +3 more
wiley   +1 more source

Gigahertz harmonic mode-locking with multi-watt sub-60-fs pulses in a Mamyshev oscillator

High Power Laser Science and Engineering
The Mamyshev oscillator (MO) is well-known for its high modulation depth, which provides an excellent platform for achieving both high average power and short pulse durations.
Feihong Qiao, Ze Li, Ning Jia, Xiangtong Zhai, Hao Liang, Zhiguo Lv   +5 more
doaj   +1 more source

Ultrahigh‐Order Harmonic Mode‐Locked Optoelectronic Oscillator

Laser & Photonics Reviews
ABSTRACT Microwave frequency combs (MFCs) have attracted significant attention for applications in communication and detection. Mode‐locked optoelectronic oscillators (ML‐OEOs) have recently emerged as a powerful solution for generating high‐quality MFCs, leveraging the low loss of optical fibers.
Zhuoran Wang, Santiago Bernal, David V. Plant, Lawrence R. Chen   +3 more
openaire   +1 more source

Analytical Prediction of Critical Transitions in Oscillator Networks With Non‐Local Links

Advanced Science, EarlyView.
An analytical framework reveals how global coupling, second‐harmonic strength, noise, and network structure govern oscillator‐based Ising dynamics. Spectral reduction predicts stability boundaries, while Fokker–Planck analysis captures one‐ to two‐cluster transitions and identifies conditions favoring low‐energy configurations.
Qiang Li, Chumin Sun, David Waxman, Renaud Lambiotte, Jie Sun, Peng Ji   +5 more
wiley   +1 more source