Results 1 to 10 of about 38,954 (267)

Sequential anti-osteoporotic therapy with teriparatide and alendronate optimizes outcomes of percutaneous vertebroplasty in acute osteoporotic vertebral fractures: a 12-month prospective cohort study [PDF]

BMC Musculoskeletal Disorders
Background Percutaneous vertebroplasty (PVP) is widely utilized for managing osteoporotic vertebral compression fractures (OVCFs), yet its long-term efficacy remains controversial.
Yafen Xie, Shangbo Niu, Yangyang Ma, Yuanjing Liao, Yongjian Zhu, Lan Feng, Minghui Zheng, Dehong Yang   +7 more
doaj   +2 more sources

Membraneless Piezoelectric MEMS speakers based on AlN Thin Film [PDF]

JES: Journal of Engineering Sciences, 2022
This paper reports piezoelectric aluminum nitride (AlN) based microelectromechanical systems (MEMS) speakers. We introduce a novel geometry of microspeakers based on AlN to meet the requirements of modern applications such as phones, tablets, laptops ...
Ahmed Fawzy
doaj   +1 more source

Study of semi-polar gallium nitride grown on m-sapphire by chloride vapor-phase epitaxy

Конденсированные среды и межфазные границы, 2023
In this study, we analyzed the result of the influence of the non-polar plane of a sapphire substrate on the structural, morphological, and optical properties and Raman scattering of the grown epitaxial GaN film.
Pavel V. Seredin, Nikolay A. Kurilo, Obaid Radam Ali, Nikita S. Buylov, Dmitry L. Goloshchapov, Sergey Alexandrovich Ivkov, Alexandr S. Lenshin, Ivan N. Arsentyev, Alexey V. Nashchekin, Shukrilo Sh. Sharofidinov, Andrey M. Mizerov, Maksim S. Sobolev, Evgeniy V. Pirogov, Igor V. Semeykin   +13 more
doaj   +1 more source

Research progress in mechanical properties of AlN reinforced aluminum matrix composites

Cailiao gongcheng, 2023
The lightweight and high strength toughness of materials are of great significance for achieving energy-saving, environmental protection, and sustainable development strategies.
ZHAO Yongfeng, TIAN Zeyuan, CHEN Zongmin, ZHAO Ertuan, MA Xia   +4 more
doaj   +1 more source

بررسی خواص الکترونی و مکانیکی تک لایه AlN تحت جذب هیدروژن با استفاده از اصول اولیه [PDF]

پژوهش سیستم‌های بس‌ذره‌ای, 2021
در این مطالعه، خواص الکترونی و مکانیکی تک لایه AlN خالص و کاملاً هیدروژن‌دار شده، با استفاده از محاسبات اصول اولیه، مورد مطالعه قرار گرفته است. دو حالت مختلف برای جذب هیدروژن در نظر گرفته شده است: (الف) جذب اتم‌های هیدروژن روی اتم‌های آلومنیوم و نیتروژن ...
راضیه نعمتی, مجتبی اشهدی, داود واحدی فخرآباد   +2 more
doaj   +1 more source

Thermodynamics, kinetics, and technology of synthesis of epitaxial layers of silicon carbide on silicon by coordinated substitution of atoms, and its unique properties. A review

Конденсированные среды и межфазные границы, 2022
This review covers studies dedicated to the search for and development of sorbents for the extraction of the caesium-137. The review analyses a new method for growing SiC epitaxial films on Si, which is based on the coordinated substitution ...
Sergey A. Kukushkin, Andrey V. Osipov
doaj   +1 more source

Modeling of a square-shape ZnO, ZnS and AlN membrane for mems capacitive pressure-sensor applications

International Journal for Simulation and Multidisciplinary Design Optimization, 2020
In this paper, mathematical modeling and simulation of a MEMS-based clamped square-shape membrane for capacitive pressure sensors have been performed. Three types of membrane materials were investigated (i.e.
Dagamseh Ahmad, Al-Bataineh Qais, Al-Bataineh Zaid, Daoud Nermeen S., Alsaad Ahmad, Omari Ahmad   +5 more
doaj   +1 more source

AlN-AlN Wafer Bonding and Its Thermal Characteristics [PDF]

ECS Meeting Abstracts, 2014
Introduction Wafer bonding allows heterogeneous integration of two materials with similar or very different lattice parameters and thermal properties, via an intermediate bonding layer or direct contact.
Bao, Shunyu, Lee, Kwang Hong, Chong, Gang Yih, Fitzgerald, Eugene A, Tan, Chuan Seng   +4 more
openaire   +2 more sources

AlN-AlN Layer Bonding and Its Thermal Characteristics [PDF]

ECS Journal of Solid State Science and Technology, 2015
Singapore. National Research Foundation (Singapore-MIT Alliance for Research and Technology)
Bao, S., Lee, K. H., Chong, G. Y., Tan, C. S., Fitzgerald, Eugene A.   +4 more
openaire   +4 more sources

MORPHOLOGY AND OPTICAL PROPERTIES OF AlN FILMS ON SAPPHIRE [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. The paper presents the results of an experimental study on morphology and optical properties of AlN films on sapphire. Thin AlN films on sapphire were used as experimental samples. Method. To obtain thin films, an ion beam deposition
Oleg V. Devitsky, Dmitry A. Nikulin, Igor A. Sysoev, Vladimir B. Osipyan   +3 more
doaj   +1 more source