Results 61 to 70 of about 4,872 (295)

A High-Sensitivity AlGaN/GaN HEMT Terahertz Detector with Integrated Broadband Bow-Tie Antenna

, 2022
S.430-444Many emerging applications in the terahertz (THz)frequency range demand highly sensitive, broadband detectorsfor room-temperature operation. Field-effect transistors with in-tegrated antennas for THz detection (TeraFETs) have proven tomeet these
Heinrich, Wolfgang, Bauer, Maris, Lisauskas, Alvydas, Roskos, Hartmut G., Ikamas, Kestutis, Osipov, Konstantin, Pralgauskaite, Sandra, Rämer, Adam, Chevtchenko, Serguei A., Cibiraite, Dovile, Krozer, Viktor   +10 more
core   +1 more source

Microscopic Origin of Temperature‐Dependent Anisotropic Heat Transport in Ultrawide‐Bandgap Rutile GeO2

Advanced Functional Materials, EarlyView.
Rutile GeO2${\rm GeO}_{2}$ exhibits orientation‐dependent heat transport with temperature‐dependent anisotropy, showing higher cross‐plane thermal conductivity along [001] than along the equivalent in‐plane [100] and [010] directions. Temperature‐dependent TDTR measurements and first‐principles phonon calculations identify the microscopic phonon ...
Pouria Emtenani, Marta Loletti, Felix Nippert, Eduardo Bedê Barros, Zbigniew Galazka, Hans Tornatzky, Christian Thomsen, Juan Sebastián Reparaz, Riccardo Rurali, Markus R. Wagner   +9 more
wiley   +1 more source

Real-time terahertz imaging for art conservation science [PDF]

Journal of the European Optical Society-Rapid Publications, 2008
A new real-time terahertz imaging system has been developed by using a quantum cascade laser source and a microbolometer focal plane detector array. The application to non-invasive analyses of cultural heritage is demonstrated with an oil paint specimen.
Fukunaga K., Sekine N., Hosako I., Oda N., Yoneyama H., Sudoh T.   +5 more
doaj   +1 more source

MEMS-Based Terahertz Detectors [PDF]

Procedia Engineering, 2015
A MEMS based novel THz detector structure is designed and realized by micro fabrication. The detector is then characterized to extract its mechanical performance. Operating in 1-5 THz band, the detector has a pixel size of 200 μm × 200 μm. Bimaterial suspension legs consist of Parylene-C and titanium, the pair of which provides a high mismatch in ...
Bilgin, H., Yalcinkaya, A.D., Torun, H.
openaire   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Carbon Nanotube Detectors and Spectrometers for the Terahertz Range

Crystals, 2020
We present the compact unified charge control model (UCCM) for carbon nanotube field-effect transistors (CNTFETs) to enable the accurate simulation of the DC characteristics and plasmonic terahertz (THz) response in the CNTFETs.
Junsung Park, Xueqing Liu, Trond Ytterdal, Michael Shur   +3 more
doaj   +1 more source

Improvement of the Electro-Optical Process in GaAs for Terahertz Single Pulse Detection by Using a Fiber-Coupling System

Applied Sciences, 2021
The electro-optical process is a popular method for terahertz radiation detection. Detectors based on the electro-optical process have large bandwidth, and the signal-to-noise ratio (SNR) is relatively high.
Adnan Haj Yahya, Nezah Balal, Avi Klein, Jacob Gerasimov, Aharon Friedman   +4 more
doaj   +1 more source

A Monolithic Visible, Infrared and Terahertz 2D Detector

, 2010
A monolithic multispectral detector for imaging in the visible (VIS), infrared (IR) and terahertz (THz) ranges has been designed for operation at room temperature.
J. Meilhan, Francois Simoens, F. Simoens, S. Pocas, Matteo Perenzoni, Jerome Meilhan, Perenzoni, Matteo, Nicola Massari, Massari, Nicola, Stephane Pocas   +9 more
core   +1 more source

High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks

Advanced Materials, EarlyView.
A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza, Karol Strutyński, Shuai Fu, Yifan Chen, Natalia M. Padial, Isabel del Barrio Gómez, Carlos Martí‐Gastaldo, Andrei N. Khlobystov, Mischa Bonn, Hai I. Wang, Manuel Melle‐Franco, Aurelio Mateo‐Alonso   +11 more
wiley   +1 more source