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A Face-Shear Mode Piezoelectric Array Sensor for Elasticity and Force Measurement
We present the development of a 6 × 6 piezoelectric array sensor for measuring elasticity and force. The proposed sensor employs an impedance measurement technique, sensing the acoustic load impedance of a target by measuring the electrical impedance shift of face-shear mode PMN–PT (lead magnesium n...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7038069/ https://www.ncbi.nlm.nih.gov/pubmed/31978965 http://dx.doi.org/10.3390/s20030604 |
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author | Kim, Kyungrim Kim, Taeyang Kim, Jinwook Jiang, Xiaoning |
author_facet | Kim, Kyungrim Kim, Taeyang Kim, Jinwook Jiang, Xiaoning |
author_sort | Kim, Kyungrim |
collection | PubMed |
description | We present the development of a 6 × 6 piezoelectric array sensor for measuring elasticity and force. The proposed sensor employs an impedance measurement technique, sensing the acoustic load impedance of a target by measuring the electrical impedance shift of face-shear mode PMN–PT (lead magnesium niobate–lead titanate) single crystal elements. Among various modes of PMN–PT single crystals, the face-shear mode was selected due to its especially high sensitivity to acoustic loads. To verify the elasticity sensing performance, gelatin samples with different elastic moduli were prepared and tested. For the force measurement test, different magnitudes of force were loaded to the sensing layer whose acoustic impedance was varied with applied forces. From the experimental results, the fabricated sensor showed an elastic stiffness sensitivity of 23.52 Ohm/MPa with a resolution of 4.25 kPa and contact force sensitivity of 19.27 Ohm/N with a resolution of 5.19 mN. In addition, the mapping experiment of elasticity and force using the sensor array was successfully demonstrated. |
format | Online Article Text |
id | pubmed-7038069 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70380692020-03-10 A Face-Shear Mode Piezoelectric Array Sensor for Elasticity and Force Measurement Kim, Kyungrim Kim, Taeyang Kim, Jinwook Jiang, Xiaoning Sensors (Basel) Article We present the development of a 6 × 6 piezoelectric array sensor for measuring elasticity and force. The proposed sensor employs an impedance measurement technique, sensing the acoustic load impedance of a target by measuring the electrical impedance shift of face-shear mode PMN–PT (lead magnesium niobate–lead titanate) single crystal elements. Among various modes of PMN–PT single crystals, the face-shear mode was selected due to its especially high sensitivity to acoustic loads. To verify the elasticity sensing performance, gelatin samples with different elastic moduli were prepared and tested. For the force measurement test, different magnitudes of force were loaded to the sensing layer whose acoustic impedance was varied with applied forces. From the experimental results, the fabricated sensor showed an elastic stiffness sensitivity of 23.52 Ohm/MPa with a resolution of 4.25 kPa and contact force sensitivity of 19.27 Ohm/N with a resolution of 5.19 mN. In addition, the mapping experiment of elasticity and force using the sensor array was successfully demonstrated. MDPI 2020-01-22 /pmc/articles/PMC7038069/ /pubmed/31978965 http://dx.doi.org/10.3390/s20030604 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Kim, Kyungrim Kim, Taeyang Kim, Jinwook Jiang, Xiaoning A Face-Shear Mode Piezoelectric Array Sensor for Elasticity and Force Measurement |
title | A Face-Shear Mode Piezoelectric Array Sensor for Elasticity and Force Measurement |
title_full | A Face-Shear Mode Piezoelectric Array Sensor for Elasticity and Force Measurement |
title_fullStr | A Face-Shear Mode Piezoelectric Array Sensor for Elasticity and Force Measurement |
title_full_unstemmed | A Face-Shear Mode Piezoelectric Array Sensor for Elasticity and Force Measurement |
title_short | A Face-Shear Mode Piezoelectric Array Sensor for Elasticity and Force Measurement |
title_sort | face-shear mode piezoelectric array sensor for elasticity and force measurement |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7038069/ https://www.ncbi.nlm.nih.gov/pubmed/31978965 http://dx.doi.org/10.3390/s20030604 |
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