Article
Physics, Applied
Huidrom Hemojit Singh, Dheeraj Kumar, Neeraj Khare
Summary: In this study, a triboelectric nanogenerator based on a ferroelectric PVDF-NaNbO3 nanocomposite film was successfully fabricated, with a significant tuning of its output achieved by adjusting the electrical polarization state. It was found that the generator made using a negatively polarized PVDF-NaNbO3 nanocomposite film had a higher output power compared to the one made using a positively polarized film. Exploring the cause of this difference, changes in the work function of the films due to polarization state were identified as the reason for the variation in output.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Ze Wang, Qi Wei, Xiaodong Liu, Li Liu, Xinyu Tang, Jia Guo, Shengqiang Ren, Guichuan Xing, Dewei Zhao, Yonghao Zheng
Summary: Halide substitution in phenethylammonium spacer cations is an effective strategy to enhance the performance of PEA based perovskite solar cells. The substitution eliminates the n = 1 2D perovskite phase, leading to perpendicular crystal orientation and orderly distribution of different n-phases in the films. This results in significantly improved power conversion efficiency and stability in the PSCs.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Hao Liu, Ping-hu Chen, Yong Chen, Wen-xing Wu, Sheng Li, Chang-jun Qiu
Summary: The effects of laser parameters on the microstructure and properties of plasma-sprayed yttrium oxide coating on the graphite matrix were investigated. Optimal laser treatment conditions result in improved critical load, mechanical properties, and crystallinity of the coating.
Article
Chemistry, Physical
Benbin Xin, Aijun Zhang, Jiesheng Han, Junyan Zhang, Junhu Meng
Summary: Boron doping has a significant influence on the phase evolution, microstructure transformation, and mechanical properties of High entropy alloys (HEAs), leading to enhanced strength and hardness through synergistic strengthening mechanisms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Sandip M. Wadhai, Yogesh B. Sawane, Abhay. V. Limaye, Arun G. Banpurkar
Summary: The electrowetting (EW) response on a dielectric is dependent on its permittivity value, Young contact angle, and voltage amplitude. By using a bilayer dielectric made up of ferroelectric PVDF-HFP and a thin layer of fluoropolymer, a significant change in EW contact angle was achieved. Optimizing the thickness values of both layers resulted in a high effective capacitance for enhanced EW response. Additionally, hysteresis in the DC-voltage EW response was observed due to polarization in the ferroelectric layer.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Physics, Applied
Koji Hirai, Takahisa Shiraishi, Wakiko Yamaoka, Risako Tsurumaru, Yukari Inoue, Hiroshi Funakubo
Summary: The composition dependence of ferroelectric properties was investigated for (111)-oriented epitaxial HfO2-CeO2 solid solution films. The films with different compositions were prepared by pulsed laser deposition and heat treatment. The crystal structures of the films changed as the composition varied, from monoclinic to orthorhombic to tetragonal/cubic phases. Ferroelectric properties were observed in films with certain compositions, suggesting a field-induced phase transition. The range of doping concentration showing ferroelectricity in these films was wider than previously reported HfO2-based films.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Article
Food Science & Technology
Solange Teresinha Carpes, Carlize Bertotto, Ana Paula Bilck, Fabio Yamashita, Ofelia Anjos, Md Abu Bakar Siddique, Sabine Martina Harrison, Nigel Patrick Brunton
Summary: The study assessed the properties of biodegradable cassava starch films extruded with varying percentages of apple pomace, finding that the film containing 8% apple pomace had higher antioxidant activity and mechanical properties. The antibacterial activity was dependent on the quantity of apple pomace, with all films showing a minimum inhibitory concentration above 12.5 mg/mL against specified bacteria species.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Suhas Yadav, Atanu Samanta, Or Shafir, Ilya Grinberg
Summary: Prediction of material properties from composition is crucial in materials science, especially for ferroelectric perovskite oxide solid solutions. A multilevel model has been developed to predict the properties of PbTiO3-derived ferroelectric solid solutions, providing a unified and quantitatively predictive theory.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yuji Noguchi, Hiroki Matsuo
Summary: The superlattice consisting of Mn(5%)-doped BiFeO3 and BaTiO3 layers grown on SrTiO3 substrates shows different behaviors based on the number of unit cells in the layers. Superlattices with fewer than 5 unit cells behave as a unified ferroelectric, while those with more than 25 unit cells behave as a simple series connection of individual capacitors. Density functional theory calculations explain the spontaneous polarization behavior in these thin superlattices and suggest the potential for novel ferroelectrics with different crystal symmetries.
Article
Chemistry, Physical
Mingqi Wang, Qingyi Zeng, Sheng Chang, Shanshan Li, Chun Hu, Zhihong Chen
Summary: By introducing a ferroelectric nanolayer onto tungstic oxide nanomaterial, this study successfully enhanced the photoelectrochemical performance, significantly increasing the photocurrent density. The results indicate that the ferroelectric nanolayer plays a crucial role in improving charge transport and separation properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Yu Sun, Ki Hei Wong, Kin Wing Kwok
Summary: This study demonstrates precise control of optical band gap in flexible lead-free ferroelectric films through mechanical strain, showing potential for high-performance optical devices and providing a new perspective for the design and fabrication of novel ferroelectric optical devices.
Article
Chemistry, Multidisciplinary
Yipeng Zang, Chen Di, Zhiming Geng, Xuejun Yan, Dianxiang Ji, Ningchong Zheng, Xingyu Jiang, Hanyu Fu, Jianjun Wang, Wei Guo, Haoying Sun, Lu Han, Yunlei Zhou, Zhengbin Gu, Desheng Kong, Hugo Aramberri, Claudio Cazorla, Jorge iniguez, Riccardo Rurali, Longqing Chen, Jian Zhou, Di Wu, Minghui Lu, Yuefeng Nie, Yanfeng Chen, Xiaoqing Pan
Summary: The study reveals a significant enhancement of interfacial thermal resistance at metal/ferroelectric interfaces and highlights the crucial role of surface charges in this process. By applying uniaxial strain, the interfacial thermal resistance can vary substantially, attributed to the renormalized interfacial electron-phonon coupling caused by charge redistribution at the interface.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Maksim Dolmat, Veronika Kozlovskaya, Donald Cropek, Eugenia Kharlampieva
Summary: A method for obtaining nanothin free-floating PMAA hydrogel films was developed through the dissolution of a sacrificial SiO2 layer. The mechanical properties and strength of the hydrogel films produced by this method were found to be good.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Physics, Applied
Minh-Tien Le, Le Van Lich, Takahiro Shimada, Takayuki Kitamura, Giang Trong Nguyen, Van-Hai Dinh
Summary: The development of modern thin-film deposition methods has enabled the design and fabrication of new materials, with a focus on compositionally graded ferroelectric/ferromagnetic multilayer thin films. By utilizing a phase-field model based on Ginzburg-Landau theory, researchers have studied the material properties and magnetoelectric (ME) coupling of graded Pb(1-x)SrxTiO3/CoFe2O4 laminated nanocomposites, finding that the ME effect is strongly influenced by the composition gradient.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Davor Ibarra-Perez, Simon Faba, Valentina Hernandez-Munoz, Charlene Smith, Maria Jose Galotto, Alysia Garmulewicz
Summary: The design of biodegradable polymeric materials, particularly seaweed-based polymer films, has attracted increasing scientific interest. Machine learning techniques were used to predict unknown compositions based on existing data, and clustering and robust regression algorithms were employed to analyze the properties of these films. The random forest algorithm demonstrated the greatest predictive capacity. These findings offer valuable insights for biomaterials manufacturing and experimentation, showcasing the promising potential of seaweed-based bioplastics as sustainable alternatives to traditional plastics.
APPLIED SCIENCES-BASEL
(2023)
