Spring 2017 Seminar Series

PPSM sponsors a series of seminars covering a broad range of topics of general interest to the polymer community, featuring speakers from both on and off campus. [LIST OF PPSM SEMINARS 1986 to PRESENT] We invite the polymer community at MIT and elsewhere to participate. For further information, contact Professor Jeremiah Johnson at jaj2109@mit.edu. All talks take place on Wednesdays.

If you would like to receive Tuesday and Wednesday email announcements of the next upcoming PPSM seminar, please email your request including your email address to:
ppst-www@mit.edu

SPRING 2017 SEMINAR LOCATION: 56-114

Seminar 3:30 PM / Refreshments 3:00 PM

LuyiSun

NEXT POLYMER SEMINAR:

“Bio-inspired Multifunctional
Stimuli-Responsive Materials”

Wednesday April 5th

Prof. Luyi Sun
Department of Chemical and
Biomolecular Engineering
University of Connecticut

ABSTRACT:

A number of marine organisms use muscle-controlled surface structures to achieve rapid changes in color and transparency with outstanding reversibility. Inspired by these display tactics, we develop analogous deformation-controlled surface-engineering approaches via strain-dependent cracks and folds. A bilayer structure composed of polyvinyl alcohol composite thin film atop elastomer substrate was designed and prepared to achieve dynamic strain-responsive optical properties. The transition between a transparent state to an opaque state can be easily achieved by uni-axially stretching and releasing the device. Also, a series of derivative mechanochromisms with capabilities of switch “on/off” fluorescence, change fluorescent color, reveal/hide information upon mechanical stimuli are prepared. These devices feature virtually no changes in optical/mechanical properties after being repeatedly stretched and released thousands of times, promising for widespread applications. Corresponding mechanics simulation was also explored, which helped to guide a more precise design of the bilayer structure.

LuyiSunResearchImage

 29

NO SEMINAR–SPRING BREAK

APRIL

 13

Thursday April 13, 2017 is the

7th Annual MIT Polymer Day!

MAY

 SalmaanBaxamusa

 3

“Polymers for Big Science: free-standing films and low-stress CVD materials at the National Ignition Facility”

Dr. Salmaan H. Baxamusa, Staff Scientist
Materials Science Division
Lawrence Livermore National Laboratory (LLNL)

 

 BrettAHelms

10

Dr. Brett A. Helms
Lawrence Berkeley National Laboratory (LBNL)

TOPIC: TBA

 KennethRShull

 17

Prof. Kenneth R. Shull
Department of Materials Science and Engineering
Northwestern University

TOPIC: TBA


MIT-logo-gray-lightgray-54x28  Massachusetts Institute of Technology Cambridge, MA 02139-4307

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