Results 61 to 70 of about 32,165 (251)

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

Adjacent Segment Instability and Degeneration After Posterior Lumbar Stabilisation [PDF]

Düşünen Adam Psikiyatri ve Nörolojik Bilimler Dergisi, 2006
Objective: In our study, we aimed to research the changes of adjacent segment degeneration in posterior lumbar spinal fusion patients.Material and Method: In this study, lumbar spondylolysthesis operation applied 36 patients were investigated.
Engin Ozar, Özgür Şenol, Levent Uysal, Murat Taşkın   +3 more
doaj  

Critical Coupling in Semi‐Trasparent Fano Resonators for Photothermal Converters

Advanced Functional Materials, EarlyView.
An ultrathin metal–insulator multilayer architecture is engineered to exploit Fano‐resonant critical coupling, completely suppressing optical reflectance while achieving a balanced 50:50 trade‐off between absorbance and transmittance. Upon laser excitation at resonance, the metamaterial generates intense localized heat (ΔT≈550∘C$\Delta T {\approx }550^\
Giuseppe Emanuele Lio, Giuseppe Nicoletta, Roberto Caputo, Antonio Ferraro   +3 more
wiley   +1 more source

Influence of cement-augmented pedicle screws with different volumes of polymethylmethacrylate in osteoporotic lumbar vertebrae over the adjacent segments: a 3D finite element analysis

BMC Musculoskeletal Disorders, 2020
Background Polymethylmethacrylate (PMMA) is commonly used for cement-augmented pedicle screw instrumentation (CAPSI) to improve the fixation stability and reduce the risk of screw loosening in the osteoporotic thoracolumbar spine.
Hui-zhi Guo, Shun-cong Zhang, Dan-qing Guo, Yan-huai Ma, Kai Yuan, Yong-xian Li, Jian-cheng Peng, Jing-lan Li, De Liang, Yong-chao Tang   +9 more
doaj   +1 more source

Adjacent Segment Degeneration and Adjacent Segment Disease: Implications following Spinal Fusion Surgery

SVOA Neurology
Spinal fusion is a common and effective option for patients with symptomatic degenerative disc disorders. However, concerns have raised over the probability of adjacent segment degeneration (ASDe) and adjacent segment disease (ASDi) following spinal instrumentation.
Neda Kamandi, Mehran Ekrami, Mohsen Khamoushi, Samin Safarian, Alireza Davoudi, Amirmohammad Soleimanian, Asef Yoonesi, Daniel Kheradmand, Melika Payrovedin, Seyed Ali Shariat Razavi, Masoumeh Taghdisi, Amirhossein Beheshtdoost, Mohammad Reza Boustani, Nima Nabavi   +13 more
openaire   +1 more source

Dirac Semimetallicity Enabled by Stripe Antiferromagnetism in Monolayer FeSe

Advanced Functional Materials, EarlyView.
In monolayer FeSe, stripe antiferromagnetic order selectively breaks mirror symmetry, enabling odd inter‐orbital hybridization between opposite‐parity Fe 3d states. This mechanism stabilizes symmetry‐protected Dirac nodes with nontrivial Wilson‐loop topology and edge states, accompanied by a strong orbital diamagnetic susceptibility as an experimental ...
Darius‐Alexandru Deaconu, Aneesh Agarwal, Sam Azadi, Rodion Vladimirovich Belosludov, Robert‐Jan Slager, Mohammad Saeed Bahramy   +5 more
wiley   +1 more source

Correlation of the single-segment dynamic stabilization with different segmental mobility and zygapophysial (facet) joint degeneration: a retrospective study in northern China

BMC Musculoskeletal Disorders
Objective To compare the clinical and radiographic outcomes of single-segment posterior decompression combined with two different non-fusion dynamic stabilization systems, Isobar EVO and Isobar TTL, in the context of facet joint degeneration and ...
Jianbin Guan, Tao Liu, Hao Chen, Kaitan Yang, Haohao Liang   +4 more
doaj   +1 more source

Emergence of a Hexagonal Fe2S2 Single Layer Without a Bulk Counterpart via Phase Transformation

Advanced Functional Materials, EarlyView.
Upon annealing, single‐layer Mackinawite iron sulfide transforms into a previously unknown hexagonal Fe2S2${\rm Fe}_2{\rm S}_2$ phase with β$\beta$‐CuI structure. STM, LEED, and first‐principles calculations identify the structure and show that electronic correlations and magnetic order are important for its stability.
Affan Safeer, Wejdan Beida, Felix Oberbauer, Nicolae Atodiresei, Gustav Bihlmayer, Max Wolfertz, Chiara Schlichte, Wouter Jolie, Stefan Blügel, Jeison Fischer, Thomas Michely   +10 more
wiley   +1 more source

Incidence and Risk Factors for Adjacent Segment Disease After Transforaminal Lumbar Interbody Fusion in Patients with Lumbar Degenerative Diseases

International Journal of General Medicine, 2021
Jiawen Ye, Sizhen Yang, Zihan Wei, Chenhui Cai, Ying Zhang, Hao Qiu, Tongwei Chu Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, People’s Republic of ChinaCorrespondence: Tongwei ChuDepartment of Orthopedics, Xinqiao ...
Ye J, Yang S, Wei Z, Cai C, Zhang Y, Qiu H, Chu T   +6 more
doaj  

Exceptional Electro‐Optic Coefficient Unlocked via Polarization Swaying in KNbO3 Thin Films

Advanced Functional Materials, EarlyView.
We present the largest reported electro‐optic response in any material to date, guided by a new design principle that exploits ultralow coercive field polarization swaying enabled by low‐symmetry ferroelectric phases in monoclinic KNbO3 thin films for energy‐efficient classical and quantum photonic integrated circuits. ABSTRACT The electro‐optic effect
Sankalpa Hazra, Aiden Ross, Brynn Brower, Tobias Schwaigert, Ian Reed Philippi, Albert Suceava, Himirkanti Sarkar, Muhammed Aminul Haque Chowdhury, Suchismita Sarker, Darrell G. Schlom, Long‐Qing Chen, Venkatraman Gopalan   +11 more
wiley   +1 more source