Nanostructured materials are a new class of materials, having dimensions in the 1~100 nm range, which provide one of the greatest potentials for improving performance and extended capabilities of products in a number of industrial sectors. Nanostructures can be divided into zero-dimensional (0D when they are uniform), one-dimensional (1D when they are elongated), and two-dimensional (2D when they are planar) based on their shapes. The recent emphasis on the nanomaterials research is put on 1D nanostructures at the expense of 0D and 2D ones, perhaps due to the intriguing possibility of using them in a majority of short-term future applications. The most successful examples are seen in the microelectronics, where “smaller” has always meant a greater performance ever since the invention of transistors, for example, higher density of integration, faster response, lower cost, and less power consumption.

In recent years, the nanostructures for sensor device applications have been highly developed in various fields, due to their flexibility and light weight for daily use. Therefore, the field of sensor device has been the subject of reviews. Sensor devices are environmentally sustainable, in particular, considering the availability of the nanostructured raw materials. Thus, we invite investigators to contribute original research articles as well as review articles that will stimulate the continuing efforts to understand the sensor devices with nanostructures. Potential topics include, but are not limited to:

• Recent development in nanostructures with new optoelectronics and optical properties
• Nanoparticles, nanowires, or nanosheets: preparation and applications
• Nanostructures for sensor applications
• Chemical and gas sensors; biosensors; optical sensors; mechanical and physical sensors; sensor/actuator systems
• Combinatorial methods for photoactive material design and optimization

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