The present invention provides a 3D display method, which comprises: obtaining an interference value of a display unit displaying at least one pair of images with parallax under the coverage of a spectroscopic device; adjusting the display unit based on the interference value; and the adjusted display unit displaying the at least one pair of images with parallax. In some embodiments another high index CCR having corresponding first and second temperature range modulators is provided. Some embodiments of the invention provide devices comprising hydrogels, and pharmaceutical compositions comprising biologically active molecules within hydrogels. A second radiator element of the two radiator elements is a passive element and connected to a ground plane. The former and the latter are provided with male and female ends using, respectively, a calotte of a sphere complemented by a spherical shaped recess.