An impedance tunable and highly efficient triboelectric nanogenerator for large-scale, ultra-sensitive pressure sensing applications

Nano Energy ◽  
2018 ◽  
Vol 49 ◽  
pp. 603-613 ◽  
Author(s):  
M. Salauddin Rasel ◽  
Pukar Maharjan ◽  
Md. Salauddin ◽  
M. Toyabur Rahman ◽  
Hyun Ok Cho ◽  
...  
Keyword(s):  
Large Scale ◽  
Triboelectric Nanogenerator ◽  
Pressure Sensing ◽  
Highly Efficient ◽  
Sensing Applications ◽  
Sensitive Pressure

ZnAl–LDH-induced electroactive β-phase and controlled dielectrics of PVDF for high-performance triboelectric nanogenerator for humidity and pressure sensing applications

2021 ◽  
Author(s):  
Soon-Gil Yoon ◽  
Ippili Swathi ◽  
Venkatraju Jella ◽  
Alphi-Maria Thomas ◽  
Chongsei Yoon ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Energy Storage ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
Triboelectric Nanogenerator ◽  
Pressure Sensing ◽  
Β Phase ◽  
Sensing Applications ◽  
Poly Vinylidene Fluoride ◽  
Double Hydroxides

Layered double hydroxides (LDHs) have been extensively investigated for various applications such as drug delivery, energy storage, catalysis, and luminescence. In this study, an eco-friendly ZnAl–CO3–LDH-poly(vinylidene fluoride) (ZnAl–LDH–PVDF) composite acting...

scholarly journals A Miniature Fabry–Pérot Fiber Interference Sensor Based on Polyvinyl Chloride Membrane for Acoustic Pressure Sensing in Mid–High-Frequency Band

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7605
Author(s):  
Qingkai Yao ◽  
Xing Guo ◽  
Linfang Xie ◽  
Li Sun ◽  
Fapeng Yu ◽  
...  
Keyword(s):  
Polyvinyl Chloride ◽  
High Frequency ◽  
Acoustic Pressure ◽  
Pressure Sensing ◽  
First Order ◽  
Sensing Applications ◽  
Fabry Perot ◽  
Inner Diameter ◽  
Polyvinyl Chloride Membrane ◽  
Sensitive Pressure

In this paper, a Fabry–Pérot interference fiber sensor was fabricated by using a Polyvinyl chloride membrane (20 μm in thickness) attached at the end of a ferrule with an inner diameter of 1.1 mm. In consideration of the vibration response of the membrane, the feature of the first-order natural frequency of membrane was analyzed by COMSOL Multiphysics. The acoustic sensing performance of the Fabry–Pérot fiber interference sensor was studied in air. The results reveal that the sensor possessed good acoustic pressure sensitivity, in the order of 33.26 mV/Pa. In addition, the noise-limited minimum detectable pressure level was determined to be 58.9 μPa/Hz1/2 and the pressure-induced deflection obtained was 105 nm/Pa at the frequency of 1 kHz. The response of the sensor was approximately consistent with the reference sensor from 1 to 7 kHz. All these results support that the fabricated Fabry–Pérot fiber interference sensor may be applied for ultra-sensitive pressure sensing applications.

Large-scale synthesis of ZIF-67 and highly efficient carbon capture using a ZIF-67/glycol-2-methylimidazole slurry

2015 ◽  
Vol 137 ◽  
pp. 504-514 ◽  
Author(s):  
Yong Pan ◽  
Hai Li ◽  
Xiao-Xin Zhang ◽  
Zhe Zhang ◽  
Xiong-Shi Tong ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Large Scale ◽  
Highly Efficient ◽  
Large Scale Synthesis

Fabrication of large area nanogap electrodes for sensing applications

2013 ◽  
Vol 1530 ◽  
Author(s):  
A. Bendavid ◽  
L. Wieczorek ◽  
R. Chai ◽  
J. S. Cooper ◽  
B. Raguse
Keyword(s):  
Large Scale ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Beam Current ◽  
Fabrication Method ◽  
Large Area ◽  
Sensor Applications ◽  
Sensing Applications ◽  
Lift Off ◽  
Nanogap Electrodes

ABSTRACTA large area nanogap electrode fabrication method combinig conventional lithography patterning with the of focused ion beam (FIB) is presented. Lithography and a lift-off process were used to pattern 50 nm thick platinum pads having an area of 300 μm × 300 μm. A range of 30-300 nm wide nanogaps (length from 300 μm to 10 mm ) were then etched using an FIB of Ga+ at an acceleration voltage of 30 kV at various beam currents. An investigation of Ga+ beam current ranging between 1-50 pA was undertaken to optimise the process for the current fabrication method. In this study, we used Monte Carlo simulation to calculate the damage depth in various materials by the Ga+. Calculation of the recoil cascades of the substrate atoms are also presented. The nanogap electrodes fabricated in this study were found to have empty gap resistances exceeding several hundred MΩ. A comparison of the gap length versus electrical resistance on glass substrates is presented. The results thus outline some important issues in low-conductance measurements. The proposed nanogap fabrication method can be extended to various sensor applications, such as chemical sensing, that employ the nanogap platform. This method may be used as a prototype technique for large-scale fabrication due to its simple, fast and reliable features.

scholarly journals WS(1−x)Sex Nanoparticles Decorated Three-Dimensional Graphene on Nickel Foam: A Robust and Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 929 ◽  
Author(s):  
Sajjad Hussain ◽  
Kamran Akbar ◽  
Dhanasekaran Vikraman ◽  
Rana Afzal ◽  
Wooseok Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Nickel Foam ◽  
Transition Metal Dichalcogenides ◽  
Three Dimensional ◽  
Cost Effective ◽  
Highly Efficient ◽  
Highly Active ◽  
Earth Abundant

To find an effective alternative to scarce, high-cost noble platinum (Pt) electrocatalyst for hydrogen evolution reaction (HER), researchers are pursuing inexpensive and highly efficient materials as an electrocatalyst for large scale practical application. Layered transition metal dichalcogenides (TMDCs) are promising candidates for durable HER catalysts due to their cost-effective, highly active edges and Earth-abundant elements to replace Pt electrocatalysts. Herein, we design an active, stable earth-abundant TMDCs based catalyst, WS(1−x)Sex nanoparticles-decorated onto a 3D porous graphene/Ni foam. The WS(1−x)Sex/graphene/NF catalyst exhibits fast hydrogen evolution kinetics with a moderate overpotential of ~−93 mV to drive a current density of 10 mA cm−2, a small Tafel slope of ~51 mV dec−1, and a long cycling lifespan more than 20 h in 0.5 M sulfuric acid, which is much better than WS2/NF and WS2/graphene/NF catalysts. Our outcomes enabled a way to utilize the TMDCs decorated graphene and precious-metal-free electrocatalyst as mechanically robust and electrically conductive catalyst materials.

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