Results 91 to 100 of about 219,971 (340)

Traveling-Wave Photomixers Based On Noncollinear Optical/Terahertz Phase-Matching [PDF]

, 1999
Traveling-wave THz photomixers based on angle-tuned optical/THz phase-matching are experimentally demonstrated. A dc-biased coplanar stripline terminated by a planar antenna is fabricated on low-temperature-grown GaAs.
Blake, Geoffrey A., Gossard, Arthur C., Jackson, Andrew W., Kadow, Cristoph, Matsuura, Shuji, Pearson, J. C., Wyss, Rolf A.   +6 more
core  

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

Merging of Accidental Bound States in the Continuum in Symmetry and Symmetry-Broken Terahertz Photonic Crystal Slabs

Nanomaterials
Recently, the merging of accidental bound states in the continuum (BICs) has attracted significant attention due to the enhanced light–matter interactions.
Jiale Chen, Jianjun Liu, Fangzhou Shu, Yong Du, Zhi Hong   +4 more
doaj   +1 more source

Terahertz Modulator Using 4-N,N-Dimethylamino-4′-N′-Methyl-Stilbazolium Tosylate (DAST)/Si Hybrid Structure

IEEE Photonics Journal, 2018
Terahertz high-data communication creates numerous demands for terahertz wave amplitude modulation. Here, we experimentally demonstrate a high-speed terahertz wave modulator based on 4-N,N-dimethylamino-4'-N'-methyl-stilbazolium tosylate (DAST)/Si
Li Jiu-sheng, Li Shao-he, Zhang Le
doaj   +1 more source

Organic Crystals for THz Photonics

Applied Sciences, 2019
Organic crystals with second-order optical nonlinearity feature very high and ultra-fast optical nonlinearities and are therefore attractive for various photonics applications.
M. Jazbinšek, Uroš Puc, Andreja Abina, A. Zidanšek   +3 more
semanticscholar   +1 more source

Probes for Ultrasensitive THz Nanoscopy [PDF]

ACS Photonics, 2019
Scattering-type scanning near-field microscopy (s-SNOM) at terahertz (THz) frequencies could become a highly valuable tool for studying a variety of phenomena of both fundamental and applied interest, including mobile carrier excitations or phase ...
C. Maissen, Shu Chen, E. Nikulina, A. Govyadinov, R. Hillenbrand   +4 more
semanticscholar   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

Advanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti, Carla Boix‐Constant, Iván Gómez‐Muñoz, Diego López‐Alcalá, Sergio Revuelta, Marco Ballabio, Vasileios Balos, José J. Baldoví, Enrique Cánovas, Josep Canet‐Ferrer, Guillermo Mínguez Espallargas, Samuel Mañas‐Valero, Eugenio Coronado   +12 more
wiley   +1 more source

RS, S (+) - and R (−)-ibuprofen cocrystal polymorphs: Vibrational spectra, XRD measurement and DFT calculation studies

Heliyon
In this paper, cocrystal polymorphs of RS-ibuprofen (RS-IBU), S (+)-ibuprofen (S(+)-IBU), R (−)-ibuprofen (R(−)-IBU) with nicotinamide (NIC) were synthesized by different methods. RS-IBU is a chiral drug with only one chiral center in the molecule, which
Yaqi Jing, Qiuhui Zhao, Jiale Zhang, Jiadan Xue, Jianjun Liu, Jianyuan Qin, Zhi Hong, Yong Du   +7 more
doaj   +1 more source

Experimental Demonstration of Ultrafast THz Modulation in a Graphene-Based Thin Film Absorber through Negative Photoinduced Conductivity

ACS Photonics, 2019
We present an experimental demonstration and interpretation of an ultrafast optically tunable, graphene-based thin film absorption modulator for operation in the THz regime.
A. Tasolamprou, A. Koulouklidis, C. Daskalaki, C. P. Mavidis, G. Kenanakis, G. Deligeorgis, Z. Viskadourakis, P. Kuzhir, S. Tzortzakis, M. Kafesaki, E. Economou, C. Soukoulis   +11 more
semanticscholar   +1 more source

Continuous-Wave THz Imaging for Biomedical Samples

Applied Sciences, 2020
In the past few decades, the applications of terahertz (THz) spectroscopy and imaging technology have seen significant developments in the fields of biology, medical diagnosis, food safety, and nondestructive testing.
Yaya Zhang, Chuting Wang, Bingxin Huai, Shiyu Wang, Yating Zhang, Dayong Wang, L. Rong, Yongchang Zheng   +7 more
semanticscholar   +1 more source