Results 31 to 40 of about 1,799,704 (293)
Terahertz spectral properties of glucose and two disaccharides in solid and liquid states
iScience, 2022 Summary: The vibrational and rotational frequencies of most biological macromolecules fall within the terahertz (THz) band; therefore, the THz wave has a strong ability to distinguish substances.
Haiyun Huang +5 more
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Application of terahertz spectroscopy to the characterization of biological samples using birefringence silicon grating [PDF]
, 2012 We present a device and method for performing vector transmission spectroscopy on biological specimens at terahertz (THz) frequencies. The device consists of artificial dielectric birefringence obtained from silicon microfluidic grating structures. The
Saha, S.C. +3 more
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Aspheric lenses for terahertz imaging
Optics Express, 2008 We present novel designs for aspheric lenses used in terahertz (THz) imaging. As different surfaces result in different beam shaping properties and in different losses from reflection and absorption, the resultant imaging resolution (i.e. the focal spot size) depends critically on the design approach.
Lo, Yat, Leonhardt, Rainer
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THz QCL - Based active imaging applied to composite materials diagnostic [PDF]
, 2009 This paper is a presentation of the recently developed researches at OLIMPES laboratory in the field of active imaging using THz Quantum Cascade Laser applied to composite materials ...
Yoann Petitjean +9 more
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Terahertz phase retrieval imaging in reflection [PDF]
Optics Letters, 2020 Terahertz phase retrieval is a promising technique able to assess the complex diffracted wave properties through an iterative processing algorithm. In this Letter, we demonstrate the implementation of this technique in reflection geometry with a continuous wave acquisition system working at 0.287 THz.
Nikolay V. Petrov +5 more
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A Review on Terahertz Technologies Accelerated by Silicon Photonics
Nanomaterials, 2021 In the last couple of decades, terahertz (THz) technologies, which lie in the frequency gap between the infrared and microwaves, have been greatly enhanced and investigated due to possible opportunities in a plethora of THz applications, such as imaging,
Jingya Xie +6 more
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Measured and simulated performance of a ceramic micromechanical beam steering device at 94 GHz [PDF]
, 2008 We report the first experimental demonstration of a transmission-mode micromechanical beam steering device for use in standoff terahertz imaging and spectroscopy.
Drysdale, T.D. +5 more
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Few-Shot SAR Target Classification via Scattering-Aware Interaction and Distribution Alignment
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingSynthetic aperture radar (SAR) automatic target recognition is crucial for detecting high-value targets. However, such targets often exhibit weak scattering and strong concealment, making measured data difficult to obtain and leading to a typical few ...
Xudong Jing +4 more
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Dual Low-Rank Constrained Self-Representation Learning for Unsupervised SAR Image Change Detection
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingChange detection (CD) in bitemporal synthetic aperture radar images has been an important research direction in remote sensing intelligent interpretation.
Weisong Li, Yinwei Li, Yiming Zhu
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Nanomaterials, 2020 We applied the harmonic oscillator model combined with the transfer matrix method to study the polarization conversion for transmitted waves in metallic grating/plasmon-excitation layer/metallic grating structure in the terahertz (THz) region.
Anqi Yu +8 more
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