Friction Reduction Through Ultrasonic Vibration Part 1: Modelling Intermittent Contact

Research output: Contribution to journalArticle


  • Eric Vezzoli
  • Zlatko Virdih
  • Vincenzo Giamundo
  • Betty Lemaire-semail
  • Frederic Giraud
  • Tomaz Rodic
  • Djordje Peric

Colleges, School and Institutes

External organisations

  • Lille 1 University
  • Swansea University, College of Engineering
  • C3M d.o.o.


Research funded by FP7 as an ETN (PROTOTOUCH: Virtual Prototyping of Tactile Displays, €4.9M); coordinated by M. Adams. Demonstrated that the conventional squeeze film mechanism, by which ultrasonic vibrations reduce finger pad friction and which is a basis of haptic feedback, is incorrect and it actually depends on a frictional ratchet mechanism. The model was rigorously validated against experimental data reported in Part 2. The understanding resulted in enhanced performance of the devices. The Marie Curie Fellow authors formed a company GoTouchVR ( to exploit the knowledge developed in the project that won 2nd prize in the MSCA entrepreneurship category.


Original languageEnglish
Pages (from-to)196-207
Number of pages12
JournalIEEE Transactions on Haptics
Issue number2
Early online date17 Feb 2017
Publication statusPublished - 20 Jun 2017


  • Tactile devices and display , Tactile stimulator , Squeeze film effect , Ultrasonic devices , Friction modulation , Intermittent

ASJC Scopus subject areas