scholarly journals Simultaneous ultrafast probing of intramolecular vibrations and photoinduced charge carriers in rubrene using broadband time-domain THz spectroscopy

2007 ◽  
Vol 75 (19) ◽  
Author(s):  
Mattijs Koeberg ◽  
Euan Hendry ◽  
Juleon M. Schins ◽  
Hendrik A. van Laarhoven ◽  
Cees F. J. Flipse ◽  
...  
Keyword(s):  
Time Domain ◽  
Charge Carriers ◽  
Thz Spectroscopy ◽  
Intramolecular Vibrations ◽  
Photoinduced Charge

Application of time-domain THz spectroscopy for studying blood plasma of rats with experimental diabetes

2014 ◽  
Vol 22 (3) ◽  
pp. 185-188 ◽  
Author(s):  
O. P. Cherkasova ◽  
M. M. Nazarov ◽  
I. N. Smirnova ◽  
A. A. Angeluts ◽  
A. P. Shkurinov
Keyword(s):  
Blood Plasma ◽  
Time Domain ◽  
Experimental Diabetes ◽  
Thz Spectroscopy

scholarly journals Time-domain THz spectroscopy of the characteristics of hydroxyapatite provides a signature of heating in bone tissue

PLoS ONE ◽  
2018 ◽  
Vol 13 (8) ◽  
pp. e0201745
Author(s):  
Marie Plazanet ◽  
Jordanka Tasseva ◽  
Paolo Bartolini ◽  
Andrea Taschin ◽  
Renato Torre ◽  
...  
Keyword(s):  
Bone Tissue ◽  
Time Domain ◽  
Thz Spectroscopy

scholarly journals Photoinduced charge carriers in conjugated polymer–fullerene composites studied with light-induced electron-spin resonance

1999 ◽  
Vol 59 (12) ◽  
pp. 8019-8025 ◽  
Author(s):  
V. Dyakonov ◽  
G. Zoriniants ◽  
M. Scharber ◽  
C. J. Brabec ◽  
R. A. J. Janssen ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Conjugated Polymer ◽  
Charge Carriers ◽  
Spin Resonance ◽  
Photoinduced Charge

Properties of Bi and BiSb Nano-Dimensional Layers in Thz Frequency Range

2020 ◽  
Vol 312 ◽  
pp. 206-212
Author(s):  
Ivan L. Tkhorzhevskiy ◽  
Anton D. Zaitsev ◽  
Petr S. Demchenko ◽  
Dmitry V. Zykov ◽  
Aleksei V. Asach ◽  
...  
Keyword(s):  
Phase Shift ◽  
Time Domain ◽  
Terahertz Wave ◽  
Film Structure ◽  
Charge Carriers ◽  
Frequency Range ◽  
Terahertz Time Domain Spectroscopy ◽  
Antimony Content ◽  
Mobility Of Charge Carriers ◽  
Substrate Film

In the present paper we demonstrate and compare different properties of Bi and Bi1-xSbx thin films placed on polyimide (PI) substrate in frequency range from 0.2 to 1.0 THz. Bi films with a thickness of 40, 105 and 150 nm have been studied as well as 150 nm Bi1-xSbx solid solutions with Sb concentration of 5, 8, 12 and 15 %. An effective refractive index and permittivity of whole substrate/film structures have been derived by using terahertz time-domain spectroscopy (THz-TDS) method. These measurements have shown the positive phase shift in PI substrate with a thickness of 42 μm and revealed that it is barely transparent in studied frequency range, but the whole substrate/film structure provides the negative phase shift of terahertz wave. It was shown that the permittivity depends on mobility of charge carriers which is driven by film thickness and antimony content.

Broadband Dielectric Characterization of Aluminum Oxide (Al2O3)

2008 ◽  
Vol 5 (1) ◽  
pp. 2-7 ◽  
Author(s):  
Khalid Z. Rajab ◽  
Mira Naftaly ◽  
Edmund H. Linfield ◽  
Juan C. Nino ◽  
Daniel Arenas ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Aluminum Oxide ◽  
Time Domain ◽  
Measurement Techniques ◽  
Thz Spectroscopy ◽  
Dielectric Characterization ◽  
Dielectric Constant And Loss ◽  
Ir Frequencies ◽  
Cofired Ceramics

Applications for low-temperature cofired ceramics (LTCC) and high-temperature cofired ceramics (HTCC) are advancing to higher frequencies. In order to design ceramic microsystems and electronic packages, the electrical properties of materials must be well characterized over a broad frequency range. In this study, the dielectric properties of commercial aluminum oxide (Al2O3) with different glass loadings are characterized using three different measurement techniques: the split-post cavity, terahertz (THz) time-domain spectroscopy, and Fourier transform IR spectroscopy (FTIR). Specifically, the dielectric properties will be characterized from 10 GHz to IR frequencies. A split-post cavity was employed for determination of dielectric properties in the 10 GHz range. A broadband THz spectroscopy technique was used to characterize the specimens using measured time-domain transmission data. The dielectric constant and loss were extracted from the sample's frequency-domain transmission characteristics, providing data between 100 GHz and 2 THz. Additionally, FTIR was used to characterize the samples from ~33 to 3300 cm−1 (~1–100 THz). The measurements from the three techniques are compared, and dielectric constant and loss data will be presented for commercial and experimental ceramic systems from 10 GHz to IR frequencies.

scholarly journals Synthesis and enhanced photocatalytic performance of 0D/2D CuO/tourmaline composite photocatalysts

2020 ◽  
Vol 11 ◽  
pp. 407-416 ◽  
Author(s):  
Changqiang Yu ◽  
Min Wen ◽  
Zhen Tong ◽  
Shuhua Li ◽  
Yanhong Yin ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Organic Contaminants ◽  
Hydrothermal Process ◽  
Charge Carriers ◽  
Molecular Vibration ◽  
Surface Element ◽  
Composite Photocatalysts ◽  
Excellent Photocatalytic Activity ◽  
Photoinduced Charge ◽  
Facile Hydrothermal Process

Photocatalysis is considered to be a green and promising technology for transforming organic contaminants into nontoxic products. In this work, a CuO/tourmaline composite with zero-dimensional/two-dimensional (0D/2D) CuO architecture was successfully obtained via a facile hydrothermal process, and its photocatalytic activity was evaluated by the degradation of methylene blue (MB). Surface element valence state and molecular vibration characterization revealed that CuO chemically interacted with tourmaline via Si–O–Cu bonds. The specific surface area of the CuO/tourmaline composite (23.60 m2 g−1) was larger than that of the pristine CuO sample (3.41 m2 g−1). The CuO/tourmaline composite exhibited excellent photocatalytic activity for the degradation of MB, which was ascribed to the increase in the quantity of the adsorption-photoreactive sites and the efficient utilization of the photoinduced charge carriers. This study provides a facile strategy for the construction of 0D/2D CuO structures and the design of tourmaline-based functional composite photocatalysts for the treatment of organic contaminants in water.

scholarly journals Time-Domain THz Spectroscopy Reveals Coupled Protein–Hydration Dielectric Response in Solutions of Native and Fibrils of Human Lysozyme

2017 ◽  
Vol 121 (18) ◽  
pp. 4810-4816 ◽  
Author(s):  
Fabio Novelli ◽  
Saeideh Ostovar Pour ◽  
Jonathan Tollerud ◽  
Ashkan Roozbeh ◽  
Dominique R. T. Appadoo ◽  
...  
Keyword(s):  
Time Domain ◽  
Dielectric Response ◽  
Thz Spectroscopy ◽  
Protein Hydration ◽  
Human Lysozyme

Ab Initio Time-Domain Study of Phonon-Assisted Relaxation of Charge Carriers in a PbSe Quantum Dot

2007 ◽  
Vol 111 (12) ◽  
pp. 4871-4878 ◽  
Author(s):  
Svetlana V. Kilina ◽  
Colleen F. Craig ◽  
Dmitri S. Kilin ◽  
Oleg V. Prezhdo
Keyword(s):  
Quantum Dot ◽  
Ab Initio ◽  
Time Domain ◽  
Charge Carriers
Sign in / Sign up

Export Citation Format

Share Document