研究ラボ紹介

新規課題 個人研究

色の変化できる素材を使って日常物の持続可能性を高める研究

研究代表者:PUNPONGSANON PARINYA  システム創成専攻・システム科学領域

I envision the future in which objects can be adapted without need of fabricating them in several versions, it can manipulate object’s appearance and properties even after it was fabricated, and to fit the personal ‘need and want’.

The color appearance is a fundamental desire to ‘have something new’ on a frequent basis, which expressed in the many ways that people customize the appearance of their fashion items. For example, clothing and shoes — further adding the amount of waste generated every day. While there is possible direction to tackle such issues as explored in the prior research in personal fabrication, this project will challenge the way to reuse fabricated object by reproducing the color of fabricated objects. To reproduce the color of fabricated objects even after the fabrication process, I will leverage advance research in materials science and informatics, such as a changeable color material and the projection-mapping. In particular, in this project, I will apply a color changeable materials to the fashion target such as clothes and shoes. Then, extended to a range of other applications. To do so, I will conduct a study to tackle this challenge in four steps using end-to-end approach. 1) I will investigate a color changeable materials that fit to the clothes. For example, using the bi-stable photochromic materials, which is activated to change color when projected with a UV light and deactivated to be transparent when projected with visible light (Figure 1). Then, I will obtain the relationship between the emitting time and the color output, and create a computational model that can estimate the time required to change the color to the target saturation. 2) I will develop the UV-light/projector-camera setup that forms the core of the system. To activate the color, I will use an array of UV LEDs and to deactivate the color, I will use a light-projector, which allows to locally activate the color on the specific location. A camera is use as the calibration the projector position with target color changeable clothes. 3) In order to serve end-to-end fabrication allows users to modify the color of their clothes, I will develop a re-coloring module including the user interface and automation process that handle the color manipulation with a range of different color conditions, such as color profiles that match a design. 4) To confirm any potential usability issues, I will conduct the system evaluation and user experiment. I will measure the capability of resolution and discuss the potential improvement. The result of this project will be tackled the future of everyday objects in term of personal requirement.

PARINYA先生

A test of photochromic ink: (a) a photochromic ink that changes color when projected with UV light. (b) Color remains even after turning off UV light. (c) Reverse to transparent by project with visible light.

 

参考URL

https://www.sens.sys.es.osaka-u.ac.jp/