Patterning Flexible Substrates Using Surface Relief Structures in Azobenzene Functionalized Polymer Films

2008 ◽  
Vol 45 (11) ◽  
pp. 938-941 ◽  
Author(s):  
Suizhou Yang ◽  
Ke Yang ◽  
Aloke Jain ◽  
Ramaswamy Nagarajan ◽  
Jayant Kumar
Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 445
Author(s):  
Madalina Handrea-Dragan ◽  
Ioan Botiz

There is an astonishing number of optoelectronic, photonic, biological, sensing, or storage media devices, just to name a few, that rely on a variety of extraordinary periodic surface relief miniaturized patterns fabricated on polymer-covered rigid or flexible substrates. Even more extraordinary is that these surface relief patterns can be further filled, in a more or less ordered fashion, with various functional nanomaterials and thus can lead to the realization of more complex structured architectures. These architectures can serve as multifunctional platforms for the design and the development of a multitude of novel, better performing nanotechnological applications. In this work, we aim to provide an extensive overview on how multifunctional structured platforms can be fabricated by outlining not only the main polymer patterning methodologies but also by emphasizing various deposition methods that can guide different structures of functional nanomaterials into periodic surface relief patterns. Our aim is to provide the readers with a toolbox of the most suitable patterning and deposition methodologies that could be easily identified and further combined when the fabrication of novel structured platforms exhibiting interesting properties is targeted.


2020 ◽  
Vol 126 (9) ◽  
Author(s):  
Joachim Jelken ◽  
Carsten Henkel ◽  
Svetlana Santer

Abstract We study the peculiar response of photo-sensitive polymer films irradiated with a certain type of interference pattern where one interfering beam is S-polarized, while the second one is P-polarized. The polymer film, although in a glassy state, deforms following the local polarization distribution of the incident light, and a surface relief grating (SRG) appears whose period is half the optical one. All other types of interference patterns result in the matching of both periods. The topographical response is triggered by the alignment of photo-responsive azobenzene containing polymer side chains orthogonal to the local electrical field, resulting in a bulk birefringence grating (BBG). We investigate the process of dual grating formation (SRG and BBG) in a polymer film utilizing a dedicated set-up that combines probe beam diffraction and atomic force microscopy (AFM) measurements, and permits acquiring in situ and in real-time information about changes in local topography and birefringence. We find that the SRG maxima appear at the positions of linearly polarized light (tilted by 45° relative to the grating vector), causing the formation of the half-period topography. This permits to inscribe symmetric and asymmetric topography gratings with sub-wavelength period, while changing only slightly the polarization of one of the interfering beams. We demonstrate an easy generation of sawtooth profiles (blazed gratings) with adjustable shape. With these results, we have taken a significant step in understanding the photo-induced deformation of azo-polymer films.


2007 ◽  
Vol 36 (10) ◽  
pp. 1224-1225 ◽  
Author(s):  
Takashi Ubukata ◽  
Shuro Yamaguchi ◽  
Yasushi Yokoyama
Keyword(s):  

1995 ◽  
Vol 413 ◽  
Author(s):  
X. L. Jiang ◽  
D. Y. Kim ◽  
L. Li ◽  
V. Shivshankar ◽  
J. Kumar ◽  
...  

ABSTRACTWe report our investigation on the recording of surface relief gratings on azobenzene containing polymer films by laser beams with different polarizations. Experimental evidence shows that it is necessary to have spatial variations of both magnitude and direction of net electric field in the films to record surface relief gratings. Large surface modulation (> 3500 Å) and high diffraction efficiency (about 30%) were obtained under optimized recording conditions. In addition, polarization dependent erasure of the gratings by a single laser beam has been studied.


2006 ◽  
Vol 16 (4) ◽  
pp. 370-375 ◽  
Author(s):  
Seok-Soon Kim ◽  
Chaemin Chun ◽  
Jae-Chul Hong ◽  
Dong-Yu Kim

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