M. Ravi Shankar

Prof. Dr. M. Ravi Shankar


Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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4 November 2013 in Proceedings of the National Academy of Sciences
Verified
Journal Article
Open access
PDF file
MSM. Ravi Shankar
M. Ravi Shankar
MSMatthew L. Smith
Matthew L. Smith
VTVincent P. Tondiglia
Vincent P. Tondiglia
KLKyung Min Lee
Kyung Min Lee
MMMichael E. McConney
Michael E. McConney
TWTimothy J. White
Timothy J. White
Significance: Photomechanical effects in polymers are distinguished by the ease with which actinic light can be regulated to contactlessly trigger the magnitude and directionality of mechanical adaptivity with spatio-temporal control. The materials examined to date have not demonstrated power densities or actuation speeds necessary for applications seeking to exploit the promise of wirelessly triggered actuation. Using mechanical design, we employ two classes of azobenzene-functionalized polymers and demonstrate contactless snap-through of bistable arches realizing orders-of-magnitude enhancement in the actuation rates (∼10 2 mm/s) and powers (∼1 kW/m 3 ) under moderate irradiation intensities (<<100 mW/cm 2 ). The experimental characterization of the snap-through is supported with modeling that elucidates the effect of geometry, mechanical properties, and photogenerated strain on the actuation rate and energy output.

1 November 2005 in Materials Science and Engineering: A
Verified
Journal Article
Closed access
SSSrinivasan Swaminathan
Srinivasan Swaminathan
MSM. Ravi Shankar
M. Ravi Shankar
SLSeongyl Lee
Seongyl Lee
JHJihong Hwang
Jihong Hwang
AKAlexander H. King
Alexander H. King
KTKevin P. Trumble
Kevin P. Trumble

1 August 2006 in Acta Materialia
Verified
Journal Article
Closed access
MSM. Ravi Shankar
M. Ravi Shankar
BRBalkrishna C. Rao
Balkrishna C. Rao
SLSeongeyl Lee
Seongeyl Lee
SCSrinivasan Chandrasekar
Srinivasan Chandrasekar
AKAlexander H. King
Alexander H. King
WCW. Dale Compton
W. Dale Compton

1 October 2005 in Acta Materialia
Verified
Journal Article
Closed access
MSM. Ravi Shankar
M. Ravi Shankar
SCSrinivasan Chandrasekar
Srinivasan Chandrasekar
AKAlexander H. King
Alexander H. King
WCW. Dale Compton
W. Dale Compton

1 May 2006 in Metallurgical and Materials Transactions A
Verified
Journal Article
Closed access
PDF file
SLSeongeyl Lee
Seongeyl Lee
JHJihong Hwang
Jihong Hwang
MSM. Ravi Shankar
M. Ravi Shankar
SCSrinivasan Chandrasekar
Srinivasan Chandrasekar
WCW. Dale Compton
W. Dale Compton

1 November 2005 in Materials Science and Engineering: A
Verified
Journal Article
Closed access
MSM. Ravi Shankar
M. Ravi Shankar
SCSrinivasan Chandrasekar
Srinivasan Chandrasekar
WCW.Dale Compton
W.Dale Compton
AKAlexander H. King
Alexander H. King