Results 151 to 160 of about 11,658 (306)

Towards a compact THz local oscillator based on a quantum cascade laser

open access: yes, 2010
Heterodyne spectroscopy of molecular rotational lines and atomic fine-structure lines is a powerful tool in astronomy and planetary research. One example is the OI fine-structure line at 4.7 THz.
Richter, Heiko   +9 more
core  

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

open access: yesAdvanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang   +14 more
wiley   +1 more source

Early detection of gastric cancer via high-resolution terahertz imaging system. [PDF]

open access: yesFront Bioeng Biotechnol, 2022
Shi H, Li T, Liu Z, Zhao J, Qi F.
europepmc   +1 more source

Terahertz Reflection-Mode Biological Imaging Based on InP HBT Source and Detector

open access: yes, 2017
This paper presents the development of an oscillator and a detector based on InP HBT technology operating near 300 GHz, and their application to terahertz reflection-mode imaging.
허용민, 손혜영, 오승재
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

Terahertz imaging for non-destructive porosity measurements of carbonate rocks. [PDF]

open access: yesSci Rep, 2022
Bouchard J   +4 more
europepmc   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

open access: yesAdvanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao   +4 more
wiley   +1 more source

A fundamental work on THz measurement techniques for application to steel manufacturing processes

open access: yes, 2005
The terahertz (THz) waves had not been obtained except by a huge system, such as a free electron laser, until an invention of a photo-mixing technique at Bell laboratory in 1984 [1]. The first method using the Auston switch could generate up to 1 THz [2].
Hasegawa, Noboru
core  

Imaging with Undetected Photons in the Terahertz Frequency Range

open access: yes
Generation and Detection of terahertz radiation still remain a technological challenge, especially when compared to the visible or near infrared spectral range.
Molter, Daniel   +3 more
core   +1 more source

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