Infrared Photorefractive Polymer Characterization System

1998 ◽  
Author(s):  
W. E. Moerner ◽  
Yitzhak Tor ◽  
Jay Siegel
Keyword(s):  
Polymer Characterization ◽  
Photorefractive Polymer

Multiwave coupling in a high-gain photorefractive polymer

1999 ◽  
Vol 24 (9) ◽  
pp. 593 ◽  
Author(s):  
K. Matsushita ◽  
P. P. Banerjee ◽  
S. Ozaki ◽  
D. Miyazaki
Keyword(s):  
High Gain ◽  
Photorefractive Polymer

Photorefractive Polymer with Side-Chain Second-Order Nonlinear Optical and Charge-Transporting Groups

1995 ◽  
Vol 7 (6) ◽  
pp. 1237-1242 ◽  
Author(s):  
Chanfeng Zhao ◽  
Chi-Kyun Park ◽  
Paras N. Prasad ◽  
Yue Zhang ◽  
Saswati Ghosal ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Second Order ◽  
Side Chain ◽  
Photorefractive Polymer

Light Activated Shape Memory Polymer Characterization—Part II

2011 ◽  
Vol 78 (6) ◽  
Author(s):  
Richard V. Beblo ◽  
Lisa Mauck Weiland
Keyword(s):  
Shape Memory ◽  
Thickness Distribution ◽  
Glassy State ◽  
Shape Memory Polymer ◽  
Chemical Kinetic ◽  
Chemical Kinetic Model ◽  
Polymer Characterization ◽  
Thermally Activated ◽  
Rubbery State ◽  
Consistent Method

Presented are the experimental results of two light activated shape memory polymer (LASMP) formulations. The optical stimulus used to activate the materials is detailed including a mapping of the spatial optical intensity at the surface of the sample. From this, results of energy calculations are presented including the amount of energy available for transitioning from the glassy state to the rubbery state and from the rubbery state to the glassy state, highlighting one of the major advantages of LASMP as requiring less energy to transition than thermally activated shape memory polymers. The mechano-optical experimental setup and procedure is detailed and provides a consistent method for evaluating this relatively new class of shape memory polymer. A chemical kinetic model is used to predict both the theoretical glassy state modulus, as only the sample averaged modulus is experimentally attainable, as well as the through thickness distribution of Young’s modulus. The experimental and model results for these second generation LASMP formulations are then compared with earlier LASMP generations (detailed previously in Beblo and Mauck Weiland, 2009, “Light Activated Shape Memory Polymer Characterization,” ASME J. Appl. Mech., 76, pp. 8) and typical thermally activated shape memory polymer.

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