Results 31 to 40 of about 535,979 (242)

Application of terahertz spectroscopy to the characterization of biological samples using birefringence silicon grating [PDF]

open access: yes, 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
core   +1 more source

Compact and ultra-efficient broadband plasmonic terahertz field detector

open access: yesNature Communications, 2019
Most efficient terahertz detection schemes rely on complex free space optics and require high-power lasers. Here, the authors report an integrated plasmonic terahertz detector on a silicon photonics platform, with 2.5 THz bandwidth and a 65 dB dynamical ...
Yannick Salamin   +7 more
doaj   +1 more source

Rapid sensing of hidden objects and defects using a single-pixel diffractive terahertz sensor

open access: yesNature Communications, 2023
Terahertz waves offer advantages for nondestructive detection of hidden objects/defects in materials, as they can penetrate most optically-opaque materials.
Jingxi Li   +8 more
doaj   +1 more source

An analytical model for terahertz detection in cylindrical surrounding-gate MOSFETs

open access: yesAIP Advances, 2018
An analytical model for detection of terahertz radiation by plasma wave in cylindrical surrounding-gate (SRG) MOSFETs is presented. In comparison with traditional drain-current models, the rectification response of terahertz signal due to current self ...
Guangjin Ma   +4 more
doaj   +1 more source

Development of a Zero-Bias Detector Based on T-Type Structure

open access: yesIEEE Access
The detector plays a crucial role in terahertz (THz) receiving systems, converting weak high-frequency signals into low-frequency or direct current signals that are easier to process. This paper proposes a zero-bias Schottky diode THz detector based on a
Xiaobo Zhang   +5 more
doaj   +1 more source

Preparation of room temperature terahertz detector with lithium tantalate crystal and thin film

open access: yesAIP Advances, 2014
Research on room temperature terahertz (THz) detector is essential for promoting the application of THz science and technology. Both lithium tantalate crystal (LiTaO3) and lithium tantalate thin film were used to fabricate the THz detector in this paper.
Jun Wang, Jun Gou, Weizhi Li
doaj   +1 more source

All-Dielectric Meta-lens Designed for Photoconductive Terahertz Antennas

open access: yesIEEE Photonics Journal, 2017
We present an all-dielectric meta-lens designed to collimate terahertz waves emitted from a terahertz antenna. The meta-lens is not only thinner than a conventional bulk silicon lens, but also promises to eliminate the use of parabolic mirrors in a ...
Qing Yu   +9 more
doaj   +1 more source

Ultrafast carrier dynamics in terahertz photoconductors and photomixers: beyond short-carrier-lifetime semiconductors

open access: yesNanophotonics, 2022
Efficient terahertz generation and detection are a key prerequisite for high performance terahertz systems. Major advancements in realizing efficient terahertz emitters and detectors were enabled through photonics-driven semiconductor devices, thanks to ...
Lu Ping-Keng   +7 more
doaj   +1 more source

Measurements of the time-jitter of coherent terahertz synchrotron radiation with a superconducting detector [PDF]

open access: yes, 2012
We have applied an ultrafast superconducting YBa2Cu3O7-δ (YBCO) detector to study the time jitter of the propagating electron bunches in a synchrotron. The jitter was determined from the coherent terahertz (THz) synchrotron radiation (CSR)
Hoehl, Arne   +13 more
core  

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

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