Papertronics: A Sustainable Interdisciplinary Approach Towards Smart Cities and Security

In this paper, a methodology to design and develop basic circuit components to reduce electronic waste and utilize renewable materials in the context of sustainable development is proposed. This utilizes an innovative approach of pen-on-paper-based dynamically tunable flexible electrical components, which provides flexibility to develop basic circuit components of user-defined values. The basic components, such as resistors, capacitors, and transistors are developed on a paper substrate using a graphite pencil, and corresponding performance analysis is carried out. Finally, a paper-based capacitive touch sensor is also proposed for human-machine interaction. These devices can not only be used as sensors, but they also find their applications in wearable security solutions and smart access control systems to elevate safety and protection in smart cities.