Results 111 to 120 of about 10,053,327 (300)

Lone‐Pair‐Induced Lattice Distortion in Lead‐Free Hybrid Perovskites for High‐Performance Nanogenerators

Advanced Functional Materials, EarlyView.
A lead‐free tin‐based hybrid perovskite is designed in which stereochemically active lone‐pair electrons on tin distort the crystal lattice and break its symmetry. Blended into a flexible polymer, the material converts pressure into electricity at milliwatt‐scale power density and continues working far below freezing, powering a commercial wristwatch ...
Majid Haji Bagheri, Asif Abdullah Khan, Md Fahim Al Fattah, Mahmoud Almadhoun, Shamaila Shahzadi, Aixi Pan, Md Soyaeb Hasan, Henry Wu, Arash Aghigh, Bhawna Bhawna, François Légaré, Vivek Maheshwari, Dayan Ban   +12 more
wiley   +1 more source

Metasurface-assisted phase-matching-free second harmonic generation in lithium niobate waveguides

Nature Communications, 2017
Phase matching is a crucial condition for nonlinear optical processes. Here, Wang et al. demonstrate that a gradient metasurface composed of phased array antennas allows phase-matching-free frequency conversion over a pump wavelength range of almost 100 ...
Cheng Wang, Zhaoyi Li, Myoung-Hwan Kim, Xiao Xiong, Xi-Feng Ren, Guang-Can Guo, Nanfang Yu, Marko Lončar   +7 more
doaj   +1 more source

Resonance assisted second-harmonic generation in a quasi-phase-matched structure

, 1996
Second-harmonic generation is analyzed for the case of a quasi-phase-matched structure containing a saturable absorber. Its presence suppresses the parametric instability limiting efficiency of the second-harmonic generation and preserves the high ...
Mel'nikov, I.V., I.V Mel'nikov
core   +1 more source

Nitrospinics: Nitride Materials for Spin‐Orbit and Orbital Torques From Memory to Artificial Intelligence

Advanced Functional Materials, EarlyView.
Further advances in applications can be anticipated through the development of unique and functional materials beyond conventional alloys. Nitrogen enables tailor‐made orbital textures in various transition‐metal hosts, paving the way for devices ranging from spintronics memory to artificial intelligence hardware.
Prabhat Kumar, Gaurav Kumar Shukla, Yoshio Miura, Shinji Isogami   +3 more
wiley   +1 more source

Angular-polarization-engineered interferometric second-harmonic generation microscopy

PhotoniX
Conventional second-harmonic generation (SHG) microscopy fundamentally lacks the phase sensitivity, which is essential for characterizing symmetry properties that depend on phase information.
Xuan Zhao, Liang Zhou, Yixin Liu, Tiantian Zhang, Ruifen Dou, Wenkai Zhang   +5 more
doaj   +1 more source

"Push-no-pull" porphyrins for second harmonic generation imaging

, 2013
The established approach to design a molecule with strong second-order nonlinear optical (NLO) activity is to connect an electron-donor to an electron-acceptor via a π-conjugated bridge, to generate push-pull system. Surprisingly, we have found that dyes
Reeve, James E., Anderson, Harry L., Clays, Koen, Fleischhauer, Jan, Boczarow, Igor, López Duarte, Ismael, Depotter, Griet, Pérez-Moreno, Javier   +7 more
core   +1 more source

Unexpected Asymmetric Mn‐Sb Site Mixing and Reentrant Spin‐Glass State of MnSb2Te4

Advanced Functional Materials, EarlyView.
MnSb2Te4 is an intrinsic magnetic topological insulator. Its properties are extraordinarily sensitive to tiny defects, making structural studies essential for understanding how magnetism and topology work together. This work shows that Mn can be unevenly distributed within the crystal and how that disorder is linked to a newly reported spin‐glass state
Gustavo Chavez Ponce de Leon, Ahmad Dibajeh, Gert ten Brink, Majid Ahmadi, Suyang Sun, Wei Zhang, Bart Jan Kooi, George Palasantzas   +7 more
wiley   +1 more source

THz Electric Field-Induced Second Harmonic Generation in Inorganic Ferroelectric

Scientific Reports, 2017
Second Harmonic Generation induced by the electric field of a strong nearly single-cycle terahertz pulse with the peak amplitude of 300 kV/cm is studied in a classical inorganic ferroelectric thin film of (Ba0.8Sr0.2)TiO3.
Kirill A. Grishunin, Nikita A. Ilyin, Natalia E. Sherstyuk, Elena D. Mishina, Alexey Kimel, Vladimir M. Mukhortov, Andrey V. Ovchinnikov, Oleg V. Chefonov, Mikhail B. Agranat   +8 more
doaj   +1 more source

GeS as an Emerging OTS Material: Atomic Structure and Modeling of ON/OFF Switching

Advanced Functional Materials, EarlyView.
The structural puzzle of glassy GeS, an advanced memory‐selector material, has finally been disentangled, revealing a patchwork of mixed tetrahedral and trigonal species. Under a high electric field, over‐ and under‐coordinated Ge and S defects, together with three‐membered rings, form an interconnected network associated with localized and extended ...
Andrey Tverjanovich, Jörg C. Neuefeind, Chris J. Benmore, Daniele Fontanari, Anton Sokolov, Maxim Khomenko, Shinji Kohara, Aleksei Bytchkov, Takeshi Usuki, Maria Bokova, Mohammad Kassem, Pascal Masselin, Mariana Milochova, Eugene Bychkov   +13 more
wiley   +1 more source

Intense second-harmonic generation in two-dimensional PtSe2

Nanophotonics
Platinum diselenide (PtSe2), classified as a noble metal dichalcogenide, has garnered substantial interest owing to its layer-dependent band structure, remarkable air-stability, and high charge-carrier mobilities.
Chu Lingrui, Li Ziqi, Zhu Han, Lv Hengyue, Chen Feng   +4 more
doaj   +1 more source