Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
A micro-rotor driven by an acoustic bubble Xiaolin Wang*, Francisco Moraga** and Daniel Attinger1
 

Summary: 1
A micro-rotor driven by an acoustic bubble
Xiaolin Wang*, Francisco Moraga** and Daniel Attinger1
*
*Department of Mechanical Engineering, State University of New York at Stony Brook,
New York, 11794-2300, USA
**Department of Mechanical, Aerospace & Nuclear Engineering, Rensselaer
Polytechnic Institute, Troy, New York, 12180, USA
We demonstrate how a micro-rotor self-aligns on top of a micro-bubble and
rotates at a frequency up to 700 rpm, because of the steady fluid flow produced by
acoustic oscillations of the micro-bubble. The rotation frequency is controlled over
a wide range by modifying the frequency of the acoustic excitation. We also show
that a wide range of geometries can be used for the rotor. Finally, the possibility to
use this novel concept to build a very simple micro-motor is discussed.
In the past decade, significant research efforts have been focused on developing
MEMS-based micro-engines or micro-motors. A first approach is to miniaturize an
existing macroscopic concept. For instance, a miniature Wankel engine [1] and micro
gas turbines have been designed [2, 3] with MEMS-based manufacturing. These
prototypes are outstanding because of their complexity and high power density, on the
order of 100MW/m3

  

Source: Attinger, Daniel - Department of Mechanical Engineering, Columbia University

 

Collections: Engineering