Textbook in PDF format This collection on paper-based sensors is the second volume of a four-volume Handbook devoted to the consideration of all aspects of paper devices from the synthesis of nanocellulose and paper manufacturing to the discussion of the features of their fabrication and use. In particular, the second volume describes all types of sensors that can be fabricated based on paper and cellulose and presents a comprehensive and detailed analysis of all aspects of the fabrication and application of these sensors in environmental monitoring, biomedicine, healthcare, agriculture, food industry, and other fields. As for paper bioengineering and environmental engineering, as well as paper electronic devices intended for electronics, optoelectronics, and energy technology, they are considered in the subsequent volumes