3D Form Display with Shape Memory Alloy

We propose a new display for presenting 3D forms using a pin-rod matrix. Due to a long range of movement, it is capable of displaying large-scale, dense objects such as human faces or geographical features. In this work, we use a coil-form Shape Memory Alloy (SMA) as a pinrod actuator. The prototype has a 4×4 pin-rod matrix, with a 120[mm] range of motion (which is longer than previous works), a 12[mm] pin interval and a 1[mm] interval for height accuracy. The pin-rod matrix conveys visual depth information and is designed to be touchable, so our goal is to develop a display that appeals to both the eyes and hands.