Scratch drive actuator
In this article, we will explore the topic of Scratch drive actuator and its impact on modern society. From its origins to its current evolution, Scratch drive actuator has played a fundamental role in different aspects of daily life. Throughout history, Scratch drive actuator has been the subject of debate and controversy, generating diverse opinions and opposing points of view. Through a deep and exhaustive analysis, we will examine the role of Scratch drive actuator in various contexts, seeking to understand its influence on culture, politics, economics and other areas of contemporary life. From its historical importance to its future implications, Scratch drive actuator has been and will continue to be a topic of interest and relevance in today's world.
 | This article needs additional citations for verification. (August 2015) |
A scratch drive actuator (SDA) is a microelectromechanical system device that converts electrical energy into one-dimensional motion.[1][2]
Description
The actuator component can come in many shapes and sizes, depending on the fabrication method used. It can be visualised as an 'L'. The smaller end is called the 'bushing'.
The actuator sits on top of a substrate that has a thin insulating dielectric layer on top. A voltage is applied between the actuator and the substrate, and the resulting potential pulls the body of the actuator downwards. When this occurs, the brush is pushed forwards by a small amount, and energy is stored in the strained actuator. When the voltage is removed, the actuator springs back into shape while the bushing remains in its new position. By applying a pulsed voltage, the SDA can be made to move forward.
The voltage is usually applied to the actuator by means of a 'tether'. This can consist of a rigid connector or a rail which the SDA follows.[3]
The size of an SDA is typically measured on the μm scale.
References
- ^ Li, Lijie; Brown, J. Gordon; Uttamchandani, Deepak (2002). "Study of scratch drive actuator force characteristics". Journal of Micromechanics and Microengineering. 12 (6): 736–741. Bibcode:2002JMiMi..12..736L. doi:10.1088/0960-1317/12/6/303. ISSN 0960-1317. S2CID 250890890.
- ^ Fujita, Hiroyuki; Toshiyoshi, Hiroshi (September 1998). "Micro actuators and their applications". Microelectronics Journal. 29 (9): 637–640. doi:10.1016/S0026-2692(98)00027-5. ISSN 0026-2692.
- ^ Cooney, Michael (June 2, 2008). "Dancing microrobots waltz on a pin's head". Network World. Retrieved July 6, 2018.
 | This article about materials science is a stub. You can help Wikipedia by expanding it. |