A Flexible Tactile Sensor to Detect Stiffness Distribution Without Measuring Displacement

Tatsuho Nagatom, Norihisa Miki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, we developed a flexible tactile sensor that scans the surface to detect the stiffness distribution. Note that the sensor does not need to know the displacement or strain of the target surface.Endoscopic palpation is a promising technology to detect tumors that have larger stiffness than normal tissues. The stiffness can be deduced by acquiring the load applied and the displacement, whereas the displacement or strain of the tissue is difficult to obtain given that endoscope has an arbitrary shape when in use and the tissue surface is not flat. In this study, we propose a new stiffness sensor composed of four strain gauges with different Young's modulus to detect the target without measuring the strain. The developed flexible sensor uses encapsulated liquid metal as the electrodes and can scan the surface.

Original languageEnglish
Title of host publication2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages551-553
Number of pages3
ISBN (Electronic)9781728120072
DOIs
Publication statusPublished - 2019 Jun
Event20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII - Berlin, Germany
Duration: 2019 Jun 232019 Jun 27

Publication series

Name2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII

Conference

Conference20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII
CountryGermany
CityBerlin
Period19/6/2319/6/27

Keywords

  • Flexible sensor
  • Galinstan
  • PDMS
  • endoscopic palpation
  • liquid metal
  • stiffness detection
  • tactile sensor

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Spectroscopy
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Electronic, Optical and Magnetic Materials
  • Control and Optimization
  • Instrumentation

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