YUNO
CHOI

Creative Technologist

Jirasol
(Dichroic Experiment)


White Light, Infinite Colors


An interactive installation that creates dynamic, magical light reflections using dichroic panels, stepper motors, and projection mapping. The projector emits only white light, while the dichroic panels refract it into a full spectrum of colors.
At AV&C, I researched and developed both the miniature-scale model and the generative graphic engine for this large-scale, software-driven physical artwork.

Electric Castle 2019


Its large scale was accepted to Electric Castle 2019 under the title Girasol, a major music and arts festival held annually at Banffy Castle in Romania, known for blending historic architecture with contemporary performances and installations.

Within the castle’s northwest tower, six large transparent panels rotate in slow choreography, their dichroic coating transforming light into shifting fields of color across the space. The work unfolds in two distinct modes:

  • Daytime Mode: Sunlight is directed inside through a solar tube, meeting the rotating panels to create organic, slowly evolving color patterns. The atmosphere is contemplative, encouraging quiet reflection.


  • Nighttime Mode: Artificial light from projectors cuts through the panels, producing vivid chromatic beams and graphic, rhythmic patterns. Unlike the chance-based daytime state, this mode is intentional and performative, with light spilling through the windows to form a luminous beacon visible from outside the castle.



Although the event was ultimately canceled due to COVID-19 and the final installation never took place, seeing our company’s name on the poster made me feel like a rockstar!