ABSTRACT
Flexible and wearable biosensors driven through emerging additive manufacturing technologies, also known as 3D printing (3DP), have been explored as the next-generation devices for human motion monitoring and portable mobile electronics owing to their promising properties such as ultra-thinness, low cost, superior flexibility, and stretchability, as well as being lightweight. In this regard, 3DP techniques have changed the concept of end-user customization and free-form building because of their diverse features that contain meticulous and controlled deposition, rapid assembly, and ease of operation, along with adaptability to numerous soft nanomaterials. Indeed, using 3D printing technologies, customized functional configurations with well-regulated design and geometry can be printed onto the desired platforms. To realize this, both industry and academic specialists are working continuously to produce faster, smaller, and more efficient wearable nanoprobes. The contribution of 3D printing technologies in developing new 3D configurations for flexible and wearable applications based on printable functional and soft nanomaterials will be discussed in this chapter. Various 3DP wearable nanoprobes like pressure/strain sensors, biochemical sensors, wearable oximeters, artificial skin, and electrocardiography (ECG) sensors are provided in the context of manufacturing approaches and design specifications. Finally, the remaining challenges and future viewpoints are discussed.
