Results 1 to 10 of about 3,368 (210)

Atmosphere-Assisted FLASH Sintering of Nanometric Potassium Sodium Niobate [PDF]

Nanomaterials, 2022
The request for extremely low-temperature and short-time sintering techniques has guided the development of alternative ceramic processing. Atmosphere-assisted FLASH sintering (AAFS) combines the direct use of electric power to packed powders with the ...
Ricardo Serrazina, Luis Pereira, Paula M. Vilarinho, Ana M. Senos   +3 more
doaj   +4 more sources

Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) Nanocomposite [PDF]

Advanced Science, 2021
Flexoelectricity is an electromechanical coupling effect in which electric polarization is generated by a strain gradient. In this investigation, a potassium sodium niobite/poly(vinylidene fluoride‐trifluoroethylene) (KNN/PVDF‐TrFE)‐based nanocomposite ...
Chenchen Wang, Yang Zhang, Bowen Zhang, Bo Wang, Jinxi Zhang, Long‐Qing Chen, Qiming Zhang, Zhong Lin Wang, Kailiang Ren   +8 more
doaj   +2 more sources

Synthesis of potassium–sodium niobate (KNN) from NbO2

Open Ceramics, 2021
KxNa1-xNbO3 (0 
Cerem Piskin, Levent Karacasulu, Mauro Bortolotti, Cekdar Vakifahmetoglu   +3 more
doaj   +3 more sources

Acceptor and Donor Dopants in Potassium Sodium Niobate Based Ceramics [PDF]

Frontiers in Materials, 2020
B-site doping in potassium sodium niobate (KNN) with Mn2+ (M⁢nNb″′) and Ti4+ (T⁢iNb′) dopants were soluble but prevented KNN from achieving a high relative density, while Sn4+ (S⁢nNb′) was not soluble in the structure as evidenced by second phase peaks ...
Fayaz Hussain, Fayaz Hussain, Amir Khesro, Zhilun Lu, Zhilun Lu, Nouf Alotaibi, Ahmad Azmin Mohamad, Ge Wang, Dawei Wang, Di Zhou   +9 more
doaj   +4 more sources

Ultra-large electric field-induced strain in potassium sodium niobate crystals. [PDF]

Sci Adv, 2020
An ultrahigh electric field–induced strain of 0.9% (under 1 kV mm −1 ) is achieved in lead-free ferroelectric crystals.
Hu C, Meng X, Zhang MH, Tian H, Daniels JE, Tan P, Huang F, Li L, Wang K, Li JF, Lu Q, Cao W, Zhou Z.   +12 more
europepmc   +5 more sources

High sound pressure piezoelectric micromachined ultrasonic transducers using sputtered potassium sodium niobate [PDF]

Microsystems & Nanoengineering
This work presents air-coupled piezoelectric micromachined ultrasonic transducers (pMUTs) with high sound pressure level (SPL) under low-driving voltages by utilizing sputtered potassium sodium niobate K0.34Na0.66NbO3 (KNN) films.
Fan Xia, Yande Peng, Wei Yue, Mingze Luo, Megan Teng, Chun-Ming Chen, Sedat Pala, Xiaoyang Yu, Yuanzheng Ma, Megha Acharya, Ryuichi Arakawa, Lane W. Martin, Liwei Lin   +12 more
doaj   +2 more sources

Composition Regulation of Potassium Sodium Niobate Thin Films through Post-Annealing under Alkali Element Atmospheres [PDF]

Nanomaterials
Amorphous potassium sodium niobate (KNN) films were synthesized at 300 °C through the radio frequency magnetron sputtering method and subsequently crystallized by post-annealing at 700 °C in various alkali element atmospheres (Na and K). The as-deposited
Binjie Chen, Chuanyang Tao, Wenying Fan, Binglin Shen, Min Ju, Zhongshang Dou, Chaofeng Wu, Fang-Zhou Yao, Wen Gong, Ke Wang   +9 more
doaj   +2 more sources

Fast-firing of potassium sodium niobate (KNN)

Open Ceramics
Potassium sodium niobate (KNN) is one of the most promising Pb-free piezo-ceramics. In the present work, KNN was produced by fast-firing with different cooling strategies, i.e., fast and slow cooling.
Levent Karacasulu, Merve Karakaya, Umut Adem, Vincenzo M. Sglavo, Mattia Biesuz, Cekdar Vakifahmetoglu   +5 more
doaj   +3 more sources

Lead-Free Potassium Sodium Niobate-Based Wearable Ultrasonic Patches for Blood Pressure Detection [PDF]

Micromachines
Ultrasound is one of the most promising methods for blood pressure monitoring due to its harmless, non-invasive, and high-precision characteristics. To further enhance the biocompatibility of ultrasound blood pressure monitors, this work reports wearable
Yajun Sun, Yi Quan, Jie Xing, Zhi Tan, Xinhao Sun, Lifei Lou, Chunlong Fei, Jianguo Zhu, Yintang Yang   +8 more
doaj   +2 more sources

BiFeO3-BaTiO3: A new generation of lead-free electroceramics [PDF]

Journal of Advanced Dielectrics, 2018
Lead-based electroceramics such as Pb(Zr.Ti)O3 (PZT) and its derivatives have excellent piezoelectric, pyroelectric and energy storage properties and can be used in a wide range of applications.
Dawei Wang, Ge Wang, Shunsuke Murakami, Zhongming Fan, Antonio Feteira, Di Zhou, Shikuan Sun, Quanliang Zhao, Ian M. Reaney   +8 more
doaj   +5 more sources