In his work The 7 Lights, artist Paul Chan makes use of light and shadow, through digital projection.
“The Lights create a vast image of cyclical destruction and rebirth, spread across floors and walls like light falling through windows. Structured over the course of a day, each of the Lights begins peacefully, with the warm colors of dawn. Slowly the atmosphere changes: silhouettes of objects rise up through the air and are dismantled by obscure forces, while human shadows plummet towards the ground.”

http://www.newmuseum.org/paulchan/1stlight.html

Graffiti Research Lab, is an art group dedicated to outfitting graffiti writers and artists with open source technologies for urban communication. The members of the group experiment in a lab and in the field to develop and test a range of experimental technologies. They document those efforts with video documentation and Do-It- Yourself instructions for each project and make it available for everybody.

source: Wikipedia
http://graffitiresearchlab.com/

Daan Roosegaarde is an artist working in Rotterdam, the Netherlands.His work explores the dynamic relation between architecture, people and e-culture. In this interaction his sculptures create a situation of ‘tactile high-tech’ where visitor and (public) space become one.

Roosegaarde: “My artworks explore the dynamic relation between architecture, people and new media. In this research the sculptures are a materialized collision of technology and the human body. Through the use of new media the sculptures trigger human senses to make a sensual engagement with their environment. For example interactive landscape Dune enhances the daily behavior of people, reacting to their sound and motion as they pass by in the evening. Here the visitor changes into a participant; a direct influence on the identity of the interactive work. Fused into an intelligent and sensible environment, the artwork becomes an extension of our collective, social skin.”
Visit his site here: http://www.studioroosegaarde.net/

Giny Vos‘ work is characterized by a poetic use of technology. It is mostly “created for public spaces.  This means that, by and large, the real existing environment plays a significant role in the final result. (…) I consider the processes that take place at any given location to be just as important as the physical characteristics thereof, so I often make use of movement, in the form of light or digital displays. At the same time, the work also always tells its own story; it is not an illustration of the place where it is, but rather tries to expand the experience of this. In this way, the work seeks to place the given situation (literally and figuratively) in another light, whereby a new situation arises, without the existing one being obscured.”
Visit her site here: http://www.ginyvos.nl/site/reizendzand_eng.html