In this easy origami tutorial, you’ll learn how to fold a Ninja Kunai, the iconic tool often seen in ninja lore. Using just a square sheet of paper, you’ll follow simple steps to create a sharp-looking kunai with a pointed blade and handle. This tutorial is perfect for beginners an...
They exhibited an exponential response to different humidity steps. Although they achieved better results when the paper was passivated, the sensor showed a very long response time to the humidity changes, independently of the parylene coating. This paper introduces the use of paper not only as ...