Nokia researchers in Finland have created a fantastic demonstration of ubiquitous computing, where computers are embedded into everyday objects such as tables, walls, or doors.
In this case, a solid wall of ice was created using ice blocks cut from a frozen river to build a 2 x 1.5 m (6.5 x 4.92-feet) wall of ice. The surface of the wall was then blasted with a heat gun to create a smooth interactive surface, ready for touch either with gloved or bare hands.
The team then pointed near-infrared light illuminators toward the wall and positioned an array of infrared cameras pointing through the ice to focus on the front surface.
As a user moves their hand across the ice surface, it causes light to reflect towards the camera array. A computer then translates the signals from each camera in the array into the precise location, size, and motion of the hand.
This data is then sent to a computer which converts the results and transfers the final calculations to a projector where images like flames can be made to appear beneath the user’s hand.
Innovative Applications of Ice Touchscreens
The concept of using ice as an interactive touchscreen opens up a myriad of possibilities for both artistic and practical applications. For instance, such technology could be used in winter festivals to create interactive art installations that engage the public in a unique and memorable way. Imagine walking through a winter wonderland where you can interact with ice sculptures that respond to your touch, displaying dynamic visuals or even playing sounds.
Moreover, this technology could be utilized in educational settings, particularly in regions that experience long winters. Schools could set up interactive ice walls where students can learn about science, art, and technology in a hands-on manner. The tactile experience combined with visual feedback could make learning more engaging and effective.
Challenges and Future Prospects
While the ice touchscreen is an impressive feat of engineering, it does come with its own set of challenges. One of the primary concerns is the durability of the ice surface. Over time, the ice may melt or become uneven, affecting the accuracy and functionality of the touchscreen. Researchers are exploring ways to maintain the integrity of the ice surface for longer periods, possibly by using refrigeration techniques or more durable ice composites.
Another challenge is the scalability of this technology. While a 2 x 1.5 m wall is a good starting point, larger installations would require more sophisticated setups and higher costs. However, as technology advances and becomes more cost-effective, we could see larger and more complex ice touchscreens being deployed in various settings.
Looking ahead, the principles behind the ice touchscreen could be adapted to other materials, expanding the scope of ubiquitous computing. For example, researchers could explore using other natural materials like wood or stone to create interactive surfaces. This would not only make the technology more versatile but also more sustainable by utilizing locally available resources.
https://blog.makezine.com/archive/2010/11/touchscreen_made_of_ice.html
Via MAKE Via Gizmag
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