Results 91 to 100 of about 1,467 (256)

Directional transmission of acoustic wave based on sector-shaped structure

AIP Advances
In this paper, three kinds of protocell models were constructed by modulating the steering using a sector structure of the same size, and the artificial acoustic periodic structure was obtained by the array protocell model.
Wentao Cai, Xinsa Zhao, Guodong Hao, Jianning Han   +3 more
doaj   +1 more source

Green and Scalable Synthesis of Efficient and Stable CsPbBr3 Perovskite Quantum Dots Enables Low‐Threshold Amplified Spontaneous Emission

Advanced Science, EarlyView.
Green and scalable synthesis of CsPbBr3 perovskite quantum dots using bio‐sourced lecithin and hexane enables single‐batch production over 10 grams. Suppressed Auger recombination and electron‐phonon coupling yields 95% PLQY, enhanced stability, and low ASE thresholds of 230.4 (ns) and 50.1 (fs) µJ cm−2 in neat films. ABSTRACT Halide perovskite quantum
Yongfeng Liu, Mengting Zhang, Qingyu Xie, Kehao Hu, Bowen Zhang, Zhe Zhang, Jie Yang, Zhiping Hu, Juan Du, Jia Wang, Min Zhou   +10 more
wiley   +1 more source

Intrinsic Phonons as a Dynamic Control Knob for Catalytic Reactivity in 2D Materials

Advanced Science, EarlyView.
Intrinsic phonon excitations are demonstrated to serve as a dynamic control knob for catalytic reactivity in 2D materials. Mode‐selective lattice vibrations reconstruct the electronic structure, lower oxygen evolution reaction barriers, establishing a phonon‐engineering paradigm for dynamically regulating electrocatalysis beyond conventional static ...
Kai Ren, Feifan Wang, Yong‐Wei Zhang, Tianyang Liu, Liangzhi Kou, Yu Jing   +5 more
wiley   +1 more source

Time-Frequency Analysis Methods: A Comprehensive Review of Techniques, Applications, and Emerging Trends

Anbar Journal of Engineering Sciences
Time-frequency analysis (TFA) bridges the gap between temporal and spectral signal representations, enabling the study of non-stationary phenomena. This paper reviews classical and modern TFA methods, including the Fourier Transform (FT), Short-Time ...
Zaynab N. Abdulhameed, Haraa Raheem Hatem, Jinan N. Shehab, Israa Hazem Ali, Marwa Al-Sultani   +4 more
doaj   +1 more source

Rabi splitting in an acoustic cavity embedded plate

New Journal of Physics, 2014
We design a structure to realize Rabi splitting and Rabi oscillation in acoustics. We develop rigorous analytical models to analyze the splitting effect from the aspect of phase matching, and from the aspect of mode coupling using a coupled mode model ...
Xu Ni, Xiao-Ping Liu, Ze-Guo Chen, Li-Yang Zheng, Ye-Long Xu, Ming-Hui Lu, Yan-Feng Chen   +6 more
doaj   +1 more source

Photoelectric Imaging of the Optically Inactive Charge State of Silicon‐Vacancy Defects in Diamond

Advanced Science, EarlyView.
Although the doubly negative charge state of the SiV center in diamond is predicted to ionize only in the ultraviolet and is therefore considered optically inaccessible, we demonstrate visible‐range photoelectric imaging enabled by a previously unrecognized regime of laser‐assisted tunneling. ABSTRACT The investigation of optically active point defects
Ilia Chuprina, Gergő Thiering, Emilie Bourgeois, Anna Ermakova, Dmitry Budker, Adam Gali, Milos Nesladek, Petr Siyushev, Fedor Jelezko   +8 more
wiley   +1 more source

Quantum Acoustics with Tunable Nonlinearity in the Superstrong Coupling Regime

PRX Quantum
Precise control of mechanical modes in the quantum regime is a key resource for quantum technologies, offering promising pathways for quantum sensing with macroscopic systems and scalable architectures for quantum simulation.
Marco Scigliuzzo, Léo Peyruchat, Riccardo Maria Marabini, Carla Becker, Vincent Jouanny, Per Delsing, Pasquale Scarlino   +6 more
doaj   +1 more source

Atomically Modulating Competing Exchange Interactions in Centrosymmetric Skyrmion Hosts GdRu2X2 (X = Si and Ge)

Advanced Electronic Materials, EarlyView.
Our work bridges the gap between skyrmion discovery and material design by demonstrating how atomic‐scale control of exchange interactions enables tunable skyrmion phase transitions in centrosymmetric magnetic metals. ABSTRACT Magnetic skyrmions are topologically protected spin states that hold promise for shaping the future of electronics.
Dasuni N. Rathnaweera, Xudong Huai, K. Ramesh Kumar, Michał J. Winiarski, Tomasz Klimczuk, Allana G. Iwanicki, Satya K. Kushwaha, Martin Mourigal, Tyrel M. McQueen, Thao T. Tran   +9 more
wiley   +1 more source

Laws of general solutions of mathematical physics equations

Partial Differential Equations in Applied Mathematics
In this paper, the general solutions of five important mathematical physics equations are obtained for the first time, using the Z transformations that we have previously proposed.
Hong Lai Zhu
doaj   +1 more source

Exceptional Antimodes in Multi‐Drive Cavity Magnonics

Advanced Electronic Materials, EarlyView.
Driven‐dissipative cavity‐magnonics provides a flexible platform for engineering non‐Hermitian physics such as exceptional points. Here, using a four‐port, three‐mode system with controllable microwave interference, antimodes and coherent perfect extinction (CPE) are realized, enabling active tuning to antimode exceptional points.
Mawgan A. Smith, Ryan D. McKenzie, Alban Joseph, Robert L. Stamps, Rair Macêdo   +4 more
wiley   +1 more source