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# IEEE Transactions on Terahertz Science and Technology

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Displaying Results 1 - 25 of 30

Publication Year: 2013, Page(s):C1 - C4
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• ### IEEE Transactions on Terahertz Science and Technology publication information

Publication Year: 2013, Page(s): C2
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• ### Editorial

Publication Year: 2013, Page(s):685 - 688
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• ### Introduction to the Special Issue

Publication Year: 2013, Page(s):689 - 691
Cited by:  Papers (1)
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• ### TeraHertz pioneers: A series of interviews with significant contributors to teraHertz science and technology

Publication Year: 2013, Page(s): 692
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• ### Terahertz Pioneer: Sir John B. Pendry “Theoretical Physics for a Practical World”

Publication Year: 2013, Page(s):693 - 701
Cited by:  Papers (1)
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• ### Optically Tunable Terahertz Metamaterials on Highly Flexible Substrates

Publication Year: 2013, Page(s):702 - 708
Cited by:  Papers (26)
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We present optically tunable metamaterials (MMs) on flexible polymer sheets operating at terahertz (THz) frequencies. The flexible MMs, consisting of electric split-ring resonators (eSRRs) on patterned GaAs patches, were fabricated on a thin polyimide layer using a transfer technique. Optical excitation of the GaAs patches modifies the metamaterial response. Our experimental results revealed that,... View full abstract»

• ### Electromagnetic Response of Finite Terahertz Metafilm Arrays Excited on Total Internal Reflection Boundaries

Publication Year: 2013, Page(s):709 - 720
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Resonant excitation of planar terahertz metamaterials using attenuated total reflection is demonstrated. Experimental results reveal an anomalous increase in the resonance strength while the sample is illuminated near the edge of the metamaterial array with a finite-size terahertz beam. A re-radiation signal at the fundamental metamaterial resonance is observed on the transmission side of the tota... View full abstract»

• ### Photoconductive THz Antenna Designs With High Radiation Efficiency, High Directivity, and High Aperture Efficiency

Publication Year: 2013, Page(s):721 - 730
Cited by:  Papers (9)
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Several linear polarized photoconductive terahertz antennas are reported and compared. A bowtie-shaped antenna, which is a variation on the standard photoconductive dipole antenna, is presented. It has satisfactory terahertz (THz) radiation performance characteristics. This bowtie-shaped antenna is combined with a silicon-based lens and with an artificial magnetic conductor (AMC) to enhance its di... View full abstract»

• ### Properties of the Input Impedance of a THz Dipole Antenna on Top of a Woodpile Structure

Publication Year: 2013, Page(s):731 - 739
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The input impedance of a dipole placed on top of an Electromagnetic Band Gap structure, namely a woodpile structure, is studied. The impact of the material properties and of the woodpile parameters is analyzed for different positions and orientations. “Parallel” configurations are found to have a very low input impedance, whereas “perpendicular” ones have a higher imped... View full abstract»

• ### Terahertz Corrugated and Bull's-Eye Antennas

Publication Year: 2013, Page(s):740 - 747
Cited by:  Papers (21)
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The radiation and temporal properties of one-dimensional and two-dimensional (Bull's-eye) corrugated antennas are investigated numerically and experimentally at terahertz. The thickness of the antenna is miniaturized, within the fabrication limits, by using the transverse slot resonance rather than the longitudinal resonance. Square and triangular corrugations are discussed. The comparison between... View full abstract»

• ### Terahertz Metamaterial Devices Based on Graphene Nanostructures

Publication Year: 2013, Page(s):748 - 756
Cited by:  Papers (21)
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We propose here the concept and practical design of THz metamaterial devices consisting of subwavelength graphene nanostructures placed on a dielectric substrate and backed by a metal gate. This geometry allows us to introduce the design of a THz metaferrite screen with effective permeability that can be tuned from positive to negative, as a function of graphene's Fermi energy. We then discuss its... View full abstract»

• ### Broadband THz Absorbers With Graphene-Based Anisotropic Metamaterial Films

Publication Year: 2013, Page(s):757 - 763
Cited by:  Papers (24)
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We introduce a broadband THz absorber with an array of graphene-dielectric multilayered frustum pyramids on a metal sheet. The multilayered graphene-dielectric structure can be considered an effectively homogeneous metamaterial with an hyperbolic dispersion and anisotropic permittivity. Surface plasmonic waves are excited on graphene layers and the incident waves of different frequencies are absor... View full abstract»

• ### Broadband Modulation of Terahertz Waves With Non-Resonant Graphene Meta-Devices

Publication Year: 2013, Page(s):764 - 771
Cited by:  Papers (10)
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Single-layer graphene absorbs a small fraction of incident terahertz waves by intraband transition of Dirac fermions. The amounts of absorption, reflection, and transmission of terahertz waves depend on the doping level of graphene, i.e., the Fermi level, and they exhibit relatively weak frequency dependency at terahertz frequencies. By hybridizing gated single-layer graphene with a non-resonant m... View full abstract»

• ### Novel THz Metamaterial Designs: From Near- and Far-Field Coupling to High-Q Resonances

Publication Year: 2013, Page(s):772 - 782
Cited by:  Papers (13)
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In this paper, we review recent research on terahertz (THz) metamaterials focusing on structures which exhibit sharp resonances with high quality factors. After a short introduction to common design concepts, near-field measurements are presented to discuss the resonant coupling and excitation mechanisms. High- Q-factor metasurfaces based on symmetric and asymmetric resonators, characterized by fa... View full abstract»

• ### Near Field Coupling in Passive and Active Terahertz Metamaterial Devices

Publication Year: 2013, Page(s):783 - 790
Cited by:  Papers (15)
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A wide variety of optical phenomena rely on the near field manipulation and confinement of electromagnetic field in subwavelength metallic and dielectric resonators with applications ranging from the design of micro and nano scale photonic devices to super lenses and ultrasensitive sensors. In this invited paper, we present a discussion on controlling the metamaterial properties by active and pass... View full abstract»

• ### Experimental Demonstration of Negative Index of Refraction in Magnetic Semiconductors

Publication Year: 2013, Page(s):791 - 797
Cited by:  Papers (2)
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Homogeneous negative index materials have been introduced as an alternative to conventional metamaterials designs. Based on direct experimental evidence, we demonstrate that the magnetic semiconductor, Cr-doped indium oxide, possesses a negative refractive index near 28.0 μm. This effect is based on the coexistence of the magnon mode with the plasmonic mode, with simultaneous negative perme... View full abstract»

• ### Effect of Magnetic Bias on Nonlinear Scattering by Stacked Semiconductor Layers

Publication Year: 2013, Page(s):798 - 804
Cited by:  Papers (2)
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The properties of the three-wave interaction and wave scattering by periodic stacks of nonlinear semiconductor layers with external magnetic bias have been explored, taking into account the nonlinear charge dynamics. It has been shown that the mixing processes in magnetoactive semiconductor structures are enhanced by the magnetic bias and the combinations of layer physical and geometrical paramete... View full abstract»

• ### Low-Loss Magnetic Metamaterial at THz Frequencies by Suppressing Radiation Losses

Publication Year: 2013, Page(s):805 - 811
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We propose an effective way to reduce losses of the magnetic metamaterial by suppressing radiation losses. The numerical simulations unveil that the losses reduction of the magnetic metamaterial is achieved by placing a split ring resonator (SRR), twisted at an angle of 180° with respect to the existing SRR owing to suppression of the radiation damping caused by residual currents in the SRR... View full abstract»

• ### Fabrication and Performance of $hbox{TiO}_{2}$-Ceramic-Based Metamaterials for Terahertz Frequency Range

Publication Year: 2013, Page(s):812 - 819
Cited by:  Papers (11)  |  Patents (2)
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A two-dimensional dielectric metamaterial composed of a TiO2 cube array is fabricated, and its performance is characterized in the terahertz region. The effective electromagnetic parameters are retrieved from the complex transmission and reflection coefficients of the sample, obtained using terahertz time-domain spectroscopy. The retrieved parameters show negative permeability and permi... View full abstract»

• ### The Fano Resonance in Symmetry Broken Terahertz Metamaterials

Publication Year: 2013, Page(s):820 - 826
Cited by:  Papers (37)
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The spectral characteristic of a Fano resonance is a distinct and unique asymmetric line shape. It arises from the destructive interference between a bright continuum mode and a discrete dark mode. Metamaterials and plasmonics have facilitated the observation of Fano resonances in the realm of classical electrodynamics and have spurred intense interest to study and to exploit their peculiarities d... View full abstract»

• ### Temperature Control of Terahertz Metamaterials With Liquid Crystals

Publication Year: 2013, Page(s):827 - 831
Cited by:  Papers (6)
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We design and experimentally characterize terahertz (THz) electric split-ring-resonator metamaterials infiltrated with nematic liquid crystals (LCs). We demonstrate that the resonant response of such metamaterials can be tuned by temperature due to the change of the LC arrangement from nematic to isotropic phase. In particular, we show that the frequency tuning is strongly dependent on the initial... View full abstract»

• ### A Metamaterial-Based Terahertz Low-Pass Filter With Low Insertion Loss and Sharp Rejection

Publication Year: 2013, Page(s):832 - 837
Cited by:  Papers (5)
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In this paper, we present an efficient low-pass terahertz (THz) filter design based on MEMS technology. With a cascaded arrangement of two functional meta-layers, we demonstrate a nearly loss-free response at the lower frequency passband and sharp rejection characteristics at the higher frequency stopband, with a steep roll-off of 296 dB/THz. The bandwidth of the low-pass filter is easily tuned by... View full abstract»

• ### Subharmonic Mixer Based on EBG Technology

Publication Year: 2013, Page(s):838 - 845
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We present the design of a submillimeter-wave mixer based on electromagnetic band gap (EBG) technology and using subharmonic local oscillator (LO) injection. The indicated device converts an incoming submilimeter wavelength signal into a 1-5 GHz intermediate frequency (IF) signal by mixing it with a subharmonic LO signal. The mixer consists of a dual-band receiver and two coplanar stripline (CPS) ... View full abstract»

• ### Equivalent-Circuit Interpretation of the Polarization Insensitive Performance of THz Metamaterial Absorbers

Publication Year: 2013, Page(s):846 - 850
Cited by:  Papers (15)
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Polarization insensitive metamaterial perfect absorbers were investigated through finite element numerical method and a new equivalent-circuit electric model was proposed to interpret this polarization insensitivity. The devices were fabricated to validate the model and experimental measurements were shown to be in good agreement with the simulated results. This absorber device is suitable for fut... View full abstract»

## Aims & Scope

IEEE Transactions on Terahertz Science and Technology is specifically aimed at the frequency range between 300 GHz and 10 THz – "Expanding the use of the Electromagnetic Spectrum.''

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Jan Stake
Chalmers University of Technology
Terahertz and Millimetre Wave Laboratory
Sweden