A repository & source of cutting edge news about emerging terahertz technology, it's commercialization & innovations in THz devices, quality & process control, medical diagnostics, security, astronomy, communications, applications in graphene, metamaterials, CMOS, compressive sensing, 3d printing, and the Internet of Nanothings. NOTHING POSTED IS INVESTMENT ADVICE! REPOSTED COPYRIGHT IS FOR EDUCATIONAL USE.
Pages- Terahertz Imaging & Detection
▼
Sunday, December 28, 2014
Abstract-The electromagnetic force in the terahertz band generated by a cross-shaped absorber
http://www.sciencedirect.com/science/article/pii/S0038109814005031 A 2D periodic force generator in terahertz band is presented. A multi-layered structure is designed, which consists of two adjacent dielectric layers and a cross-shaped metal patch. Once the structure is resonant, strong coupling effect takes place between the two dielectric layers. Due to the coupling effect, the electromagnetic field is enhanced, which leads to a large electromagnetic force. The force is calculated by the Maxwell Stress Tensor. The magnitude of the force is three orders higher than the force generated in the optical band presented in other papers. The power density of the incident light is studied for the demonstration of the usefulness of the force in terahertz band generated by the structure. Dielectric loss is also taken into consideration. The result shows that the magnitude of the force is still enough to offset the gravity of the unit cell even with a high dielectric
No comments:
Post a Comment
Please share your thoughts. Leave a comment.