Reversing the action of thermoelastic bimorphs using selective directional stiffeners

I. Grinberg, S. Shmulevich, D. Elata

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present for the first time ever, a method for reversing the response of thermoelastic bimorph actuators, without changing the order of their layers. Our device is constructed from a flat stage that is suspended on three thermoelastic bimorph spiral arms. We demonstrate that the thermoelastic response of the spiral bimorphs can be affected by using directional stiffeners. We show that with no stiffeners, the thermoelastic response naturally displaces the stage downwards by 7μm. Stiffeners that are angled at 45° relative to the spiral tangent, enhance this response by a factor of 3, and increase the downward displacement to 23μm. Surprisingly, stiffeners which are angled at -45°, completely reverse the direction of the response, and result in an enhanced upward displacement of 23μm.

Original languageEnglish
Title of host publication2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
Pages904-907
Number of pages4
ISBN (Electronic)9781479989553
DOIs
StatePublished - 5 Aug 2015
Event18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 - Anchorage, United States
Duration: 21 Jun 201525 Jun 2015

Publication series

Name2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015

Conference

Conference18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
Country/TerritoryUnited States
CityAnchorage
Period21/06/1525/06/15

Keywords

  • Actuators
  • Bimorph
  • Spiral
  • Stiffeners
  • Thermoelastic

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

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