One of the cool projects that I presented last week at TechConnect Summit (which by the way was a great success. Congrats to Jennifer for the organization!), is a wearable photonic colored fibers developed by Pr. Maksim Skorobagatiy at Ecole Polytechnique de Montreal.
Smart textiles are now everywhere (Frost and Sullivan estimates that in 2020, 80% of the textile will be smart!). Applications already include interactive clothing for sports, hazardous occupations, and military, industrial textiles with integrated sensors or signage, fashion accessories and apparel with unique and variable appearance, etc…
Mainly because of their commercial availability but also their low cost, photonics textile manufacturers usually use silica glass-based telecommunication fibers which cause several challenges in the textile world (How to extract the color from the fiber core? How to generate the color? How to weave them? etc…).
Here comes Pr. Skorobogatiy’s invention!
Instead of using glass-based fibers, he proposes to use photonics crystal fibers made of different layers of polymers which will act as a spectral filter. Therefore, from a single white light source, only a given color will be leaked out of the fiber.
No more need to paint the fiber or to use 3 RGB LED, the color is defined by the fiber design itself (geometry, polymers used, etc…)!
Finally, one of the cool properties of Maksim’s fibers is their ability to change color by mixing the reflected ambient light with the irradiated guided light (inside the fiber).
Under the daylight illumination, and in the absence of guided light, in the fiber is still colored. Consequently, when both the ambient illumination and guided light are present, the overall color of the fiber will be determined by mixing of the two colors in the radiation far field (ex : green + red = yellow).
Applications of this new invention include the development of variable colored uniforms or signs. It could also be used as an anti‐counterfeit label or an intelligent jewelry.
Check out the prototypes’ pictures on Pr. Skorobogatiy’s website. They’re amazing!
As usual, I welcome your comments and feedbacks! Any other idea of applications?
Thomas

