Ferroelectric lead barium zirconate thin film of high fatigue resistance

2001 ◽  
Vol 78 (12) ◽  
pp. 1721-1723 ◽  
Author(s):  
J. H. Tseng ◽  
T. B. Wu
Keyword(s):  
Thin Film ◽  
Fatigue Resistance ◽  
Barium Zirconate ◽  
High Fatigue

Smart and efficient opto-electronic dual response material based on two-dimensional perovskite crystal/thin film

2020 ◽  
Vol 8 (6) ◽  
pp. 1953-1961 ◽  
Author(s):  
Jie Li ◽  
Chang Xu ◽  
Wan-Ying Zhang ◽  
Ping-Ping Shi ◽  
Qiong Ye ◽  
...  
Keyword(s):  
Thin Film ◽  
Fatigue Resistance ◽  
Electronic Devices ◽  
Rapid Response ◽  
Two Dimensional ◽  
Dual Response ◽  
High Fatigue ◽  
Perovskite Crystal

Our opto-electronic dual response material, possessing rapid response and high fatigue resistance, could be widely applied to smart electronic devices.

scholarly journals Effect of mesoscale phase contrast on fatigue-delaying behavior of self-healing hydrogels

2021 ◽  
Vol 7 (16) ◽  
pp. eabe8210
Author(s):  
Xueyu Li ◽  
Kunpeng Cui ◽  
Takayuki Kurokawa ◽  
Ya Nan Ye ◽  
Tao Lin Sun ◽  
...  
Keyword(s):  
Crack Growth ◽  
Fatigue Resistance ◽  
Phase Contrast ◽  
Stress Singularity ◽  
Soft Materials ◽  
Self Healing ◽  
Strong Phase ◽  
Mesoscale Structure ◽  
High Fatigue ◽  
Affine Deformation

We investigate the fatigue resistance of chemically cross-linked polyampholyte hydrogels with a hierarchical structure due to phase separation and find that the details of the structure, as characterized by SAXS, control the mechanisms of crack propagation. When gels exhibit a strong phase contrast and a low cross-linking level, the stress singularity around the crack tip is gradually eliminated with increasing fatigue cycles and this suppresses crack growth, beneficial for high fatigue resistance. On the contrary, the stress concentration persists in weakly phase-separated gels, resulting in low fatigue resistance. A material parameter, λtran, is identified, correlated to the onset of non-affine deformation of the mesophase structure in a hydrogel without crack, which governs the slow-to-fast transition in fatigue crack growth. The detailed role played by the mesoscale structure on fatigue resistance provides design principles for developing self-healing, tough, and fatigue-resistant soft materials.

Metal Oxide Thin Film Transistor with Nano Inorganic Gate Dielectric : Material Chemistry, Nanoscience, Solution Processing and Electronics

2021 ◽  
Vol 23 (09) ◽  
pp. 1078-1085
Author(s):  
A. Kanni Raj ◽  
Keyword(s):  
Thin Film ◽  
Metal Oxide ◽  
Gate Dielectric ◽  
Dielectric Material ◽  
Thin Film Transistor ◽  
Sol Gel ◽  
Oxide Thin Film ◽  
Barium Zirconate ◽  
Operating Voltage ◽  
Metal Oxide Thin Film

Indium Lead Oxide (ILO) based Metal Oxide Thin Film Transistor (MOTFT) is fabricated with Lead Barium Zirconate (PBZ) gate dielectric. PBZ is formed over doped silicon substrate by cheap sol-gel process. Thin film PBZ is analysed with X-ray Diffraction (XRD), Ultra-Violet Visible Spectra (UV-Vis) and Atomic Force Microscope (AFM). IZO is used as bottom gate to contact Thin Film Transistor (TFT). This device needs only 5V as operating voltage, and so is good for lower electronics <40V. It shows excellent emobility 4.5cm2/V/s, with on/off ratio 5×105 and sub-threshold swing 0.35V/decade.

Fabrication of Solid Oxide Fuel Cells via Thin Film Techniques

2010 ◽  
Vol 654-656 ◽  
pp. 2787-2790 ◽  
Author(s):  
Yoon Ho Lee ◽  
Goo Young Cho ◽  
Young Seok Jee ◽  
Ikwhang Chang ◽  
Sang Kyun Kang ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Deposition ◽  
Solid Oxide ◽  
Limiting Current ◽  
Membrane Electrode ◽  
Barium Zirconate ◽  
Oxide Fuel ◽  
Operation Temperature ◽  
Thin Film Electrolyte ◽  
Film Electrolyte

Fabricating electrolyte with thin film is one of various methods of lowering the operation temperature for solid oxide fuel cell (SOFC). Because the major polarization of SOFCs is ohmic loss, many groups have tried to fabricate a thin film electrolyte – some proton conducting material that has the conductivity of a couple of orders higher than oxygen conducting one. We have investigated the synthesis of Membrane Electrode Assembly (MEA) including Yttria-doped Barium Zirconate(BYZ) thin film electrolyte via thin-film processes such as Pulsed Laser Deposition and Sputtering. Another approach to lower the operation temperature of SOFCs is the bi-layer structure electrolyte. The functional layer via thin film deposition could guarantee minimum power density loss and stable operation. After the study of Atomic Layer Deposition (ALD) condition to deposit Yttria Stabilized Zirconia (YSZ) on Gadonilia doped Cerate (GDC) substrate, GDC/YSZ bi-layered electrolyte button cells showed higher OCV and larger limiting current with 100nm YSZ ultra thin film. The performance improvement might be attributed to the function of electron blocking and cutting off the reducible gas.

Multi-Arch-Structured All-Carbon Aerogels with Superelasticity and High Fatigue Resistance as Wearable Sensors

2020 ◽  
Vol 12 (14) ◽  
pp. 16822-16830 ◽  
Author(s):  
Jiankun Huang ◽  
Jingbin Zeng ◽  
Baoqiang Liang ◽  
Junwei Wu ◽  
Tongge Li ◽  
...  
Keyword(s):  
Fatigue Resistance ◽  
Wearable Sensors ◽  
Carbon Aerogels ◽  
High Fatigue

scholarly journals Muscle-like fatigue-resistant hydrogels by mechanical training

2019 ◽  
Vol 116 (21) ◽  
pp. 10244-10249 ◽  
Author(s):  
Shaoting Lin ◽  
Ji Liu ◽  
Xinyue Liu ◽  
Xuanhe Zhao
Keyword(s):  
Fatigue Resistance ◽  
Skeletal Muscles ◽  
Amorphous Polymer ◽  
High Strength ◽  
High Water ◽  
Polymer Chains ◽  
High Water Content ◽  
High Fatigue ◽  
Synthetic Hydrogels ◽  
Crack Pinning

Skeletal muscles possess the combinational properties of high fatigue resistance (1,000 J/m2), high strength (1 MPa), low Young’s modulus (100 kPa), and high water content (70 to 80 wt %), which have not been achieved in synthetic hydrogels. The muscle-like properties are highly desirable for hydrogels’ nascent applications in load-bearing artificial tissues and soft devices. Here, we propose a strategy of mechanical training to achieve the aligned nanofibrillar architectures of skeletal muscles in synthetic hydrogels, resulting in the combinational muscle-like properties. These properties are obtained through the training-induced alignment of nanofibrils, without additional chemical modifications or additives. In situ confocal microscopy of the hydrogels’ fracturing processes reveals that the fatigue resistance results from the crack pinning by the aligned nanofibrils, which require much higher energy to fracture than the corresponding amorphous polymer chains. This strategy is particularly applicable for 3D-printed microstructures of hydrogels, in which we can achieve isotropically fatigue-resistant, strong yet compliant properties.

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