The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Terahertz response of microfluidic-jetted fabricated 3D flexible metamaterials
Author:	Hor, Yew Li
View Online:	njit-etd2009-006 (xviii, 148 pages ~ 12.4 MB pdf)
Department:	Federated Physics Department of NJIT and Rutgers-Newark
Degree:	Doctor of Philosophy
Program:	Applied Physics
Document Type:	Dissertation
Advisory Committee:	Federici, John Francis (Committee chair) Barat, Robert Benedict (Committee member) Gary, Dale E. (Committee member) Sirenko, Andrei (Committee member) Vargas, M. (Committee member)
Date:	2009-01
Keywords:	Metamaterials Terahertz metamaterials Left-handed material LHM Terahertz Negative index of refraction
Availability:	Unrestricted
Abstract:	Conventional materials exhibit some restrictions on their electromagnetic properties. Especially in terahertz region, for example, materials that exhibit magnetic response are far less common in nature than materials that exhibit electric response. However, materials can be designed, namely artificial man-made metamaterials that exhibit electromagnetic properties that are not found in natural materials by adjusting, for example, the dielectric, magnetic or structural parameters of the constituent elements. This dissertation demonstrates the use of new fabrication techniques to construct metamaterials in THz range via a material deposition system. The metamaterials are fabricated by stacking alternative layers with conventional designs such as single ring- split ring resonators (SRR) and microstrips to form a 3D metamaterial structure. Conductive nano-particle Ag, Cu and semiconductor polymer fluids are used as structural mediums. The metamaterials are fabricated on polyimide substrate. Their flexible nature will be advantageous in future device innovations. In order to obtain electromagnetic resonance in the terahertz range, the dimensions of the single ring-SRR and microstrips are first approximated by analytical methods and then confirmed by numerical simulation. The fabricated metamaterials are then characterized in transmission mode using Time-domain THz Spectroscopy (THz-TDS) in the 0.1 to 2 THz range.