Fig. 2From: High-Performance Self-Powered UV Detector Based on SnO2-TiO2 Nanomace ArraysSEM and TEM images and XRD patterns of SnO2 nanotube arrays and SnO2-TiO2 nanomace arrays. a High-magnification top-view SEM image of SnO2 nanotube arrays. b SEM image of 6-h-grown STNMAs. c SEM image of 12-h-grown STNMAs. d SEM image of 18-h-grown STNMAs. e SEM image of 24-h-grown STNMAs. f X-ray diffraction patterns of the substrate, SnO2 nanotube arrays, and STNMAs. g TEM image of bare SNA. h TEM image of 18-h-grown STNMAsBack to article page