Results 81 to 90 of about 11,658 (306)
Assessment of cameras for continuous wave sub-terahertz imaging [PDF]
, 2020 In this contribution, we present the direct comparison between Ophir Pyrocam IV and Terasense Tera-1024 cameras used for imaging of terahertz (THz) and sub-THz signals. We compare general properties, such as frequency dependent and polarisation dependent
Freer, Suzanna +2 more
core +1 more source
Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment
Advanced Materials, EarlyView.ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud +31 more
wiley +1 more source
Study of multi-long-pulse thermography using high-power fiber lasers
AIP Advances, 2023 Active infrared thermography tests are performed using a high-power continuous fiber laser as the excitation source. Multi-long-pulses (MLPs) are used to detect deep defects in samples with reduced heating.
Gangbo Hu +4 more
doaj +1 more source
Terahertz polarization imaging with birefringent materials
, 2010 We present a terahertz (THz) imaging method with a birefringent material which is sensitive to THz wave polarization The subtle THz polarization modulations introduced by the target are extracted by the amplitudes of the two separated THz peaks passing ...
Zhao, YueJin +9 more
core +1 more source
Advanced Materials, EarlyView.A deep learning inverse‐design framework is established to create versatile reconfigurable terahertz metadevices. By synergizing deep learning with phase‐change materials, this approach enables on‐demand customization of multidimensional electromagnetic responses.
Yisheng Dong +11 more
wiley +1 more source
Suppression of the fluctuation effect in terahertz imaging using homomorphic filtering
, 2013 To suppress the fluctuation effect due to laser power instability and terahertz radiation fluctuation, a homomorphic filtering method is proposed to process the terahertz images obtained from a pulsed terahertz raster scanning imaging system.
Xu, Limin, Fan, Wenhui, Liu, Jia
core +1 more source
High‐Sensitivity Terahertz Gas Sensing Enabled by Undercut Metal‐Dielectric‐Metal Metamaterial
Advanced Materials Interfaces, EarlyView.A terahertz (THz) metamaterial gas sensor is demonstrated using a metal–dielectric–metal (MDM) absorber with an undercut dielectric layer, which enlarges the gas‐replaced volume and strengthens refractive‐index perturbation of the resonant mode. A reflection dip at 0.766 THz is observed, and acetone–nitrogen tests yield concentration‐dependent shifts ...
Naoki Inomata +2 more
wiley +1 more source
Exploring terahertz spectral characteristics of L-sorbose and D-melibiose in solid and liquid states
iScienceSummary: Saccharides are essential organic compounds that perform critical functions in sustaining life processes. As biomolecules, their vibrational frequencies predominantly fall in the terahertz (THz) range, making them amenable to analysis using THz ...
Boyan Zhang +7 more
doaj +1 more source
Thermal Radiation Emission From 3D Graphene Networks
Advanced Materials Interfaces, EarlyView.Three‐dimensional graphene networks are demonstrated as exceptional broadband thermal emitters, exhibiting high‐intensity, spectrally homogeneous emission and strong mechanical flexibility compared to conventional emitters like silicon carbide.
Maria Chiara Paolozzi +7 more
wiley +1 more source
Terahertz Fourier Ptychographic Imaging
OpticaHigh-resolution imaging in the terahertz (THz) spectral range remains fundamentally constrained by the limited numerical apertures of currently existing state-of-the-art imagers, which restricts its applicability across many fields, such as imaging in complex media or non-destructive testing.
Pitambar Mukherjee +7 more
openaire +2 more sources