Quantitative analysis of surface bending strain in polyethylene terephthalate films

Yuhao Zhang; Masayuki Kishino; Ryo Taguchi; Norihisa Akamatsu; Atsushi Shishido

doi:10.1117/12.2596383

1 August 2021 Quantitative analysis of surface bending strain in polyethylene terephthalate films

Yuhao Zhang, Masayuki Kishino, Ryo Taguchi, Norihisa Akamatsu, Atsushi Shishido

Proceedings Volume 11807, Liquid Crystals XXV; 1180711 (2021) https://doi.org/10.1117/12.2596383
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States

Conference Poster

Abstract

Over the past decades, flexible electronics such as flexible liquid crystal devices composed of polymer film substrates have been dramatically growing. Understanding bending behavior of polymer films is the key to designing flexible electronic devices with high mechanical durability. Although various bending analysis methods have been proposed, they are still limited to macroscopic and qualitative analyses. Recently, we have newly proposed a method for analyzing the surface bending strain in flexible materials, termed surface labeled grating method. This method enables us to quantitatively evaluate the surface bending strain by monitoring the diffraction angle of a He-Ne laser beam that passes through a grating label attached on a sample. In this study, we measure the surface bending strain in polyethylene terephthalate films and reveal that tension and compression occurs in their outer and inner surfaces, respectively.

Conference Presentation

Citation Download Citation

Yuhao Zhang, Masayuki Kishino, Ryo Taguchi, Norihisa Akamatsu, and Atsushi Shishido "Quantitative analysis of surface bending strain in polyethylene terephthalate films", Proc. SPIE 11807, Liquid Crystals XXV, 1180711 (1 August 2021); https://doi.org/10.1117/12.2596383

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available