Vibro-perception of optical bio-inspired fiber-skin

Tao Li, Sheng Zhang, Guo Wei Lu, Yuta Sunami

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


In this research, based on the principle of optical interferometry, the Mach-Zehnder and Optical Phase-locked Loop (OPLL) vibro-perception systems of bio-inspired fiber-skin are designed to mimic the tactile perception of human skin. The fiber-skin is made of the optical fiber embedded in the silicone elastomer. The optical fiber is an instinctive and alternative sensor for tactile perception with high sensitivity and reliability, also low cost and susceptibility to the magnetic interference. The silicone elastomer serves as a substrate with high flexibility and biocompatibility, and the optical fiber core serves as the vibro-perception sensor to detect physical motions like tapping and sliding. According to the experimental results, the designed optical fiber-skin demonstrates the ability to detect the physical motions like tapping and sliding in both the Mach-Zehnder and OPLL vibro-perception systems. For direct contact condition, the OPLL vibro-perception system shows better performance compared with the Mach-Zehnder vibro-perception system. However, the Mach-Zehnder vibro-perception system is preferable to the OPLL system in the indirect contact experiment. In summary, the fiber-skin is validated to have light touch character and excellent repeatability, which is highly-suitable for skin-mimic sensing.

Original languageEnglish
Article number1531
JournalSensors (Switzerland)
Issue number5
Publication statusPublished - 2018 May 12
Externally publishedYes


  • Bio-inspired sensor
  • Fiber-skin
  • OPLL
  • Silicone elastomer
  • Vibro-perception

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering


Dive into the research topics of 'Vibro-perception of optical bio-inspired fiber-skin'. Together they form a unique fingerprint.

Cite this