Durable paper printed with electronic circuit boards allows a user to roll the tube loosely or tightly to adjust the light

Japanese design firm Nendo has created a paper flashlight using AgIC technology, which prints electronic circuit boards onto paper. The designers used YUPO paper by Takeo, which is hard-wearing, water resistant and suitable for industrial applications.

The circuits on both sides of the paper were printed in a checker pattern, with two button cells and seven LEDs glued on using conductive adhesive. A user can change the resistance, varying the path length of each LED, by adjusting how tightly they roll the paper, enabling the lighting to be controlled. The light becomes dimmer when the paper is rolled loosely and brighter when tightly rolled.

When pushed through a stand, the paper flashlight can also function as a simple desk lamp. Various applications could be possible in the future, including emergency use and disaster prevention.

Nendo

Japanese design firm Nendo has created a paper flashlight using AgIC technology, which prints electronic circuit boards onto paper. The designers used YUPO paper by Takeo, which is hard-wearing, water resistant and suitable for industrial applications.

The circuits on both sides of the paper were printed in a checker pattern, with two button cells and seven LEDs glued on using conductive adhesive. A user can change the resistance, varying the path length of each LED, by adjusting how tightly they roll the paper, enabling the lighting to be controlled. The light becomes dimmer when the paper is rolled loosely and brighter when tightly rolled.