Design and Fabrication of a Multi-electrode Metal-core Piezoelectric Fiber and Its Application as an Airflow Sensor

2016 ◽  
Vol 13 (3) ◽  
pp. 416-425 ◽  
Author(s):  
Yixiang Bian ◽  
Yanjun Zhang ◽  
Xianlong Xia
Keyword(s):  
Metal Core ◽  
Airflow Sensor ◽  
Electrode Metal ◽  
Piezoelectric Fiber

Fabrication of a polyvinylidene difluoride fiber with a metal core and its application as directional air flow sensor

2016 ◽  
Vol 09 (01) ◽  
pp. 1650001 ◽  
Author(s):  
Yixiang Bian ◽  
Rongrong Liu ◽  
Shen Hui
Keyword(s):  
Air Flow ◽  
Hot Extrusion ◽  
Metal Core ◽  
Beam Structure ◽  
Airflow Velocity ◽  
Polyvinylidene Difluoride ◽  
Surface Electrodes ◽  
Flow Changes ◽  
Airflow Sensor ◽  
Piezoelectric Fiber

We fabricated a sensitive air flow detector that mimic the sensing mechanism found at the tail of some insects. [see Y. Yang, A. Klein, H. Bleckmann and C. Liu, Appl. Phys. Lett. 99(2) (2011); J. J. Heys, T. Gedeon, B. C. Knott and Y. Kim, J. Biomech. 41(5), 977 (2008); J. Tao and X. Yu, Smart Mat. Struct. 21(11) (2012)]. Our bionic airflow sensor uses a polyvinylidene difluoride (PVDF) microfiber with a molybdenum core which we produced with the hot extrusion tensile method. The surface of the fiber is partially coated with conductive silver adhesive that serve as surface electrodes. A third electrode, the metal core is used to polarize polyvinylidene difluoride (PVDF) under the surface electrodes. The cantilever beam structure of the prepared symmetric electrodes of metal core piezoelectric fiber (SMPF) is used as the artificial hair airflow sensor. The surface electrodes are used to measure output voltage. Our theoretical and experimental results show that the SMPF responds fast to air flow changes, the output charge has an exponential correlation with airflow velocity and a cosine relation with the direction of airflow. Our bionic airflow sensor with directional sensing ability can also measure air flow amplitude. [see H. Droogendijk, R. G. P. Sanders and G. J. M. Krijnen, New J. Phys. 15 (2013)]. By using two surface electrodes, our sensing circuit further improves sensitivity.

A biomimetic 3D airflow sensor made of an array of two piezoelectric metal-core fibers

Sensor Review ◽  
2017 ◽  
Vol 37 (3) ◽  
pp. 312-321 ◽  
Author(s):  
Yixiang Bian ◽  
Can He ◽  
Kaixuan Sun ◽  
Longchao Dai ◽  
Hui Shen ◽  
...  
Keyword(s):  
Design Methodology ◽  
Spherical Surface ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Piezoceramic Cylinder ◽  
Metal Core ◽  
Content Type ◽  
3D Space ◽  
Highly Sensitive ◽  
Airflow Sensor

Purpose The purpose of this paper is to design and fabricate a three-dimensional (3D) bionic airflow sensing array made of two multi-electrode piezoelectric metal-core fibers (MPMFs), inspired by the structure of a cricket’s highly sensitive airflow receptor (consisting of two cerci). Design/methodology/approach A metal core was positioned at the center of an MPMF and surrounded by a hollow piezoceramic cylinder. Four thin metal films were spray-coated symmetrically on the surface of the fiber that could be used as two pairs of sensor electrodes. Findings In 3D space, four output signals of the two MPMFs arrays can form three “8”-shaped spheres. Similarly, the sensing signals for the same airflow are located on a spherical surface. Originality/value Two MPMF arrays are sufficient to detect the speed and direction of airflow in all three dimensions.

Simple harmonic vibration sensor with symmetrical electrode metal-core PVDF fibers

2017 ◽  
Vol 25 (12) ◽  
pp. 3089-3095
Author(s):  
边义祥 BIAN Yi-xiang ◽  
王汝梦 WANG Ru-meng ◽  
孙凯旋 SUN Kai-xuan ◽  
刘榕榕 LIU Rong-rong ◽  
陈文家 CHEN Wen-jia
Keyword(s):  
Harmonic Vibration ◽  
Vibration Sensor ◽  
Metal Core ◽  
Electrode Metal

scholarly journals Smart System Using New Piezoelectric Fiber with Metal Core

2007 ◽  
Vol 1 (6) ◽  
pp. 728-733 ◽  
Author(s):  
Yoshiro SHIMOJO ◽  
Hiroshi SATO ◽  
Kiyoshi TAKAGI ◽  
Yue Jin SHAN ◽  
Hideo IMOTO ◽  
...  
Keyword(s):  
Metal Core ◽  
Smart System ◽  
Piezoelectric Fiber

Metal-Core Piezoelectric Fibers for the Detection of Lamb Waves

2010 ◽  
Author(s):  
Jian Liu ◽  
Jinhao Qiu ◽  
Weijie Chang ◽  
Hongli Ji ◽  
Kongjun Zhu
Keyword(s):  
Lamb Wave ◽  
Piezoelectric Effect ◽  
Lamb Waves ◽  
Guided Wave ◽  
Voltage Response ◽  
Metal Core ◽  
Direct Piezoelectric Effect ◽  
New Type ◽  
Sensor Voltage ◽  
Piezoelectric Fiber

Metal-core piezoelectric fiber (MPF) is a new type of piezoelectric ceramic device with small size, and has great potential to be used as structurally integrated transducers for guided-wave (GW) structural health monitoring. This paper focuses on the use of MPF as ultrasonic Lamb wave receivers. First, the MPF sensor voltage response is derived by coupling the direct piezoelectric effect to the wave strain field excited by circular crested actuator. The obtained theoretical result is validated on an aluminum plate. Furthermore, the experiment that compares the MPF response to Lamb wave with the PZT response is performed. The results show that MPF sensors can be used to sense Lamb waves clearly. In the end, the directivity of MPF response to Lamb waves was investigated, and another experiment is performed to examine the directivity of MPF response to Lamb waves. The result shows that MPF has high directivity, which can be exploited to triangulate the location of an ultrasound source without prior knowledge of the wave velocity in the medium.

A biomimetic vibration sensor using a symmetric electrodes metal core piezoelectric fiber

2017 ◽  
Vol 29 (6) ◽  
pp. 1015-1024 ◽  
Author(s):  
Yixiang Bian ◽  
Yi Zhang ◽  
Kaixuan Sun ◽  
Hong Jin ◽  
Longchao Dai ◽  
...  
Keyword(s):  
Harmonic Excitation ◽  
Vibration Sensor ◽  
Ceramic Fiber ◽  
Metal Core ◽  
Electrode Coating ◽  
Coated Metal ◽  
Wide Range ◽  
Press Method ◽  
Impact Vibration ◽  
Piezoelectric Fiber

A biomimetic vibration sensor to sense external vibrations was designed based on the hair receptor of insects similar to the water strider. Platinum core piezoelectric ceramic fiber body was prepared by squeeze and press method. This was followed by high-temperature sintering, surface electrode coating, and polarizing to fabricate the symmetric coated metal core piezoelectric fiber vibration sensor. A cantilever beam structure with two surface electrodes was designed as the theoretical sensor model. The fiber was fixed on a matrix structure. Experiments were performed to verify sensing characteristics under impact vibration and simple harmonic excitation. Results showed that the symmetric coated metal core piezoelectric fiber was able to sense amplitude and direction of impact vibration along with frequency, amplitude, and direction under simple harmonic excitation. Such a biomimetic vibration sensor can be effectively used to sense vibration amplitude and direction for a wide range of applications.

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