[19p-C43-1~15] 4.7 Quantum Optics, Nonlinear Optics and Structured Optics

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[19p-C43-8] Real-time movies of photo-induced azo-polymer motions obtained by high-speed atomic force microscopy

〇Keishi Yang¹, Feng-Yueh Chan², Yasushi Inouye^1,4, Prabhat Verma¹, Takayuki Uchihashi^2,3, Hidekazu Ishitobi^1,4, Takayuki Umakoshi^1,5 (1.Dept. Applied Physics, Osaka Univ., 2.Dept. of Physics, Nagoya Univ., 3.ExCELLS, 4.FBS, Osaka Univ., 5.Inst. Adv. Co-creation Studies, Osaka Univ.)

Keywords:

high-speed atomic force microscopy,azo-polymer

Azo-polymer thin film, containing azo-benzene molecules, forms unique surface reliefs due to photoisomerization reaction under light irradiation. In previous, the formation process of azo-polymer has been studied by observing distinct deformed structures at different irradiation times using atomic force microscopy (AFM). To reveal the formation mechanisms, real-time nanoscale visualization of the azo-polymer deformation process is highly desirable.
In this study, we achieved the real-time observation of the deformation process of azo-polymer thin films using high-speed atomic force microscopy(HS-AFM). HS-AFM can capture AFM image with a high spatial resolution (~1 nm) and temporal resolution (~10 frames per second). We succeeded in real time imaging of azo-polymer deformation process using HS-AFM combined with inverted optical microscope. Through HS-AFM observations under various conditions, the deformation mechanism of azo-polymer can be further understood in the future.