TY - JOUR
T1 - Thermoosmosis as Driving Mechanism for Micro- or Nanoscale Engine Driven by External Temperature Gradient
AU - Semenov, Semen
AU - Schimpf, Martin
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/10/23
Y1 - 2015/10/23
N2 - We study thermoosmosis as the physical basis for creating a micro- or nanoscale engine. As a model system, we consider concentric cylinders in which an annular cavity has been created. The outer cylinder, which acts as a stator, comprises two halves composed of different materials. The inner cylinder forms a rotor that is driven by thermoosmotic flow within the annular cavity etched into the stator and filled with a nonionic liquid. The circular thermoosmotic flow is established within the enclosed cavity in response to an external temperature gradient directed transverse to the cylindrical axis. The circular flow induces rotation of the rotor through hydrodynamic friction at the rotor surface. The velocity and direction of the rotation depends on the magnitude of both the temperature gradient and difference in physicochemical properties of the two stator materials. The thermoosmotic engine can be used to drive a mechanical load in micro- and nanoscale devices. The drive load characteristic of the engine is expressed as the dependence of the angular velocity on the load torque.
AB - We study thermoosmosis as the physical basis for creating a micro- or nanoscale engine. As a model system, we consider concentric cylinders in which an annular cavity has been created. The outer cylinder, which acts as a stator, comprises two halves composed of different materials. The inner cylinder forms a rotor that is driven by thermoosmotic flow within the annular cavity etched into the stator and filled with a nonionic liquid. The circular thermoosmotic flow is established within the enclosed cavity in response to an external temperature gradient directed transverse to the cylindrical axis. The circular flow induces rotation of the rotor through hydrodynamic friction at the rotor surface. The velocity and direction of the rotation depends on the magnitude of both the temperature gradient and difference in physicochemical properties of the two stator materials. The thermoosmotic engine can be used to drive a mechanical load in micro- and nanoscale devices. The drive load characteristic of the engine is expressed as the dependence of the angular velocity on the load torque.
UR - https://scholarworks.boisestate.edu/chem_facpubs/98
UR - http://dx.doi.org/10.1021/acs.jpcc.5b08670
UR - http://www.scopus.com/inward/record.url?scp=84946893683&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.5b08670
DO - 10.1021/acs.jpcc.5b08670
M3 - Article
VL - 119
SP - 25628
EP - 25633
JO - Chemistry and Biochemistry Faculty Publications and Presentations
JF - Chemistry and Biochemistry Faculty Publications and Presentations
IS - 45
ER -