K. Ishii, I. Saito, Junya Fujii, Yusuke Oga, Shizuki Nakai, Sota Iima, Hiraoka Nobuaki
{"title":"脉冲波对指甲微应变的测量","authors":"K. Ishii, I. Saito, Junya Fujii, Yusuke Oga, Shizuki Nakai, Sota Iima, Hiraoka Nobuaki","doi":"10.14326/abe.9.31","DOIUrl":null,"url":null,"abstract":"The micro-strains of a ngernail and toenail caused by pulse wave were measured by a conventional strain measuring method using a biaxial strain gauge. The strain uctuations of nails were larger in the lateral direction than in the longitudinal direction. In a previous study, pulse wave measurement by a polyvinylidene di uoride (PVDF) lm, which is a piezo lm, attached to the nail surface was proposed as a new pulse wave measuring method with lower electrical power consumption. The piezo lm can transform a nail surface micro-strain caused by pulse wave into an electrical signal. However, the optimal orientation of the piezo lm on nails remains unclear. The experimental results of the present study showed that a larger displacement was generated from the nails to the piezo lms by aligning the longitudinal direction of the piezo lm with the lateral direction of the nails.","PeriodicalId":54017,"journal":{"name":"Advanced Biomedical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Measurement of Micro-Strain in Nail Caused by Pulse Wave\",\"authors\":\"K. Ishii, I. Saito, Junya Fujii, Yusuke Oga, Shizuki Nakai, Sota Iima, Hiraoka Nobuaki\",\"doi\":\"10.14326/abe.9.31\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The micro-strains of a ngernail and toenail caused by pulse wave were measured by a conventional strain measuring method using a biaxial strain gauge. The strain uctuations of nails were larger in the lateral direction than in the longitudinal direction. In a previous study, pulse wave measurement by a polyvinylidene di uoride (PVDF) lm, which is a piezo lm, attached to the nail surface was proposed as a new pulse wave measuring method with lower electrical power consumption. The piezo lm can transform a nail surface micro-strain caused by pulse wave into an electrical signal. However, the optimal orientation of the piezo lm on nails remains unclear. The experimental results of the present study showed that a larger displacement was generated from the nails to the piezo lms by aligning the longitudinal direction of the piezo lm with the lateral direction of the nails.\",\"PeriodicalId\":54017,\"journal\":{\"name\":\"Advanced Biomedical Engineering\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2020-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Biomedical Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.14326/abe.9.31\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, BIOMEDICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Biomedical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14326/abe.9.31","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, BIOMEDICAL","Score":null,"Total":0}
Measurement of Micro-Strain in Nail Caused by Pulse Wave
The micro-strains of a ngernail and toenail caused by pulse wave were measured by a conventional strain measuring method using a biaxial strain gauge. The strain uctuations of nails were larger in the lateral direction than in the longitudinal direction. In a previous study, pulse wave measurement by a polyvinylidene di uoride (PVDF) lm, which is a piezo lm, attached to the nail surface was proposed as a new pulse wave measuring method with lower electrical power consumption. The piezo lm can transform a nail surface micro-strain caused by pulse wave into an electrical signal. However, the optimal orientation of the piezo lm on nails remains unclear. The experimental results of the present study showed that a larger displacement was generated from the nails to the piezo lms by aligning the longitudinal direction of the piezo lm with the lateral direction of the nails.