Results 81 to 90 of about 48,397 (306)
A lettuce moisture detection method based on terahertz time-domain spectroscopy
Ciência Rural, 2021 : For non-destructive detection of water stress in lettuce, terahertz time-domain spectroscopy (THz-TDS) was used to quantitatively analyze water content in lettuce. Four gradient lettuce water contents were used . Spectral data of lettuce were collected
Xiaodong Zhang +4 more
doaj +1 more source
, 2014 Photomixing of two near-infrared lasers is well established for continuous-wave terahertz spectroscopy. Photomixing of three lasers allows us to measure at three terahertz frequencies simultaneously.
A. Roggenbuck +7 more
core +1 more source
Metrology of Complex Refractive Index for Solids in the Terahertz Regime Using Frequency Domain Spectroscopy [PDF]
, 2018 Frequency domain spectroscopy allows an experimenter to establish optical properties of solids in a wide frequency band including the technically challenging 10 THz region, and in other bands enables metrological comparison between competing techniques ...
Chick, Steven +3 more
core +2 more sources
Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics
Advanced Functional Materials, EarlyView.Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha +18 more
wiley +1 more source
Research on identification method of bituminous coal based on terahertz time-domain spectroscopy
Frontiers in Earth ScienceThe traditional coal type identification method needs to measure a variety of parameters of coal samples to obtain more accurate results, and the detection process is time-consuming and laborious, and can not realize the rapid identification of coal ...
Shuguang Miao +9 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Viscoelasticity‐driven instabilities are harnessed to create tunable, periodic textures in 3D‐printed liquid crystalline polymers. This study illustrates how processing parameters control these spontaneous meso‐scale patterns. These unique structural architectures unlock new possibilities for functional devices, ranging from photonic components to ...
Miaomiao Zou +17 more
wiley +1 more source
Nonlinear terahertz devices utilizing semiconducting plasmonic metamaterials
, 2015 The development of responsive metamaterials has enabled the realization of compact tunable photonic devices capable of manipulating the amplitude, polarization, wave vector, and frequency of light. Integration of semiconductors into the active regions of
Averitt, Richard D. +8 more
core +1 more source
Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α‐Quartz
Advanced Materials, EarlyView.Chiral acoustic phonons in α‐quartz are probed via Brillouin light scattering, exploiting the photon's helicity and the crystal's handedness. The interaction obeys a selection rule arising from pseudoangular momentum conservation, enabling direct optical access to phonon chirality in nonsymmorphic crystals.
Changsoo Kim +8 more
wiley +1 more source
Complex Refractive Index of Strontium Titanate in the Terahertz Frequency Range
Российский технологический журнал, 2019 The recent progress in terahertz time-domain spectroscopy enables the accurate and reliable measurements of dielectric properties in comparison with the traditional far-infrared spectroscopy using an incoherent light source.
V. R. Bilyk, K. A. Grishunin
doaj +1 more source
High-Power Lensless THz Imaging of Hidden Objects
IEEE Access, 2021 The potential of pulsed THz radiation for time-of-flight imaging applications is well recognized. However, advances in this field are currently severely limited by the low average power of ultrafast THz sources.
Samira Mansourzadeh +9 more
doaj +1 more source