In situ measurement of temperature dependent picosecond resolved carrier dynamics in near infrared (NIR) sensitive device on action

2019 ◽  
Vol 90 (4) ◽  
pp. 043909 ◽  
Author(s):  
Jayita Patwari ◽  
Arka Chatterjee ◽  
Hemant Ghadi ◽  
Hemant Sharma ◽  
Subhananda Chakrabarti ◽  
...  
Keyword(s):  
Near Infrared ◽  
Carrier Dynamics ◽  
In Situ Measurement ◽  
Temperature Dependent

scholarly journals In situ measurement of micro flow rate using near infrared absorption method

2018 ◽  
Vol 26 (13) ◽  
pp. 17078 ◽  
Author(s):  
Seok Hwan Lee ◽  
Joohyun Lee ◽  
Sejong Chun ◽  
Woong Kang
Keyword(s):  
Flow Rate ◽  
Infrared Absorption ◽  
Near Infrared ◽  
In Situ Measurement ◽  
Absorption Method ◽  
Micro Flow

scholarly journals Near infrared laser annealing of CdTe and in-situ measurement of the evolution of structural and optical properties

2016 ◽  
Vol 119 (16) ◽  
pp. 165305 ◽  
Author(s):  
Brian J. Simonds ◽  
Sudhajit Misra ◽  
Naba Paudel ◽  
Koen Vandewal ◽  
Alberto Salleo ◽  
...  
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Laser Annealing ◽  
Infrared Laser ◽  
In Situ Measurement ◽  
Structural And Optical Properties

Generation of Stable Radical Cations (Polarons) and Dications (Bipolarons) on Model Thiophene Oligomers

1989 ◽  
Vol 173 ◽  
Author(s):  
Denis Fichou ◽  
Gilles Horowitz
Keyword(s):  
Activation Energy ◽  
Electron Spin Resonance ◽  
Infrared Absorption ◽  
Near Infrared ◽  
Radical Cations ◽  
Temperature Dependent ◽  
Spin Resonance ◽  
Oxidative Doping ◽  
Radical Cation Salts

ABSTRACTOxidative doping of individual thiophene oligomers nT (n = 3 to 6) with FeC13 in dilute CH2Cl2 solution generates the corresponding radical cations (polarons) nT+.. as evidenced by in-situ visible/near infrared absorption and electron spin resonance spectroscopies. The nT+. species in solution progressively precipitate as conducting (0′300K = 10−1−10−2 S/cm) and strongly paraaagnetic radical cation salts (g = 2.003, ΔHPP ∼ 4–8 G). The conductivity of the 6T+. salt is weakly temperature dependent, with an activation energy of 32 meV above 100 K and a tendency to level Dff at lower temperatures. In the case of the sexithienyl radical 6T+., further doping results in the quantitative conversion into the dication 6T++ (bipolaron).

scholarly journals Applications of AOTF Spectrometers in In Situ Lunar Measurements

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3454
Author(s):  
Jinning Li ◽  
Yuhua Gui ◽  
Rui Xu ◽  
Zehong Zhang ◽  
Wei Liu ◽  
...  
Keyword(s):  
Lunar Surface ◽  
Near Infrared ◽  
Infrared Imaging ◽  
In Situ Measurement ◽  
Low Light ◽  
Imaging Spectrometer ◽  
Electrical Modulation ◽  
Temperature Ranges ◽  
Temperature Adaptability

Spectrometers based on acousto-optic tunable filters (AOTFs) have several advantages, such as stable temperature adaptability, no moving parts, and wavelength selection through electrical modulation, compared with the traditional grating and Fourier transform spectrometers. Therefore, AOTF spectrometers can realize stable in situ measurement on the lunar surface under wide temperature ranges and low light environments. AOTF imaging spectrometers were first employed for in situ measurement of the lunar surface in the Chinese Chang’e project. The visible and near-infrared imaging spectrometer and the lunar mineralogical spectrometer have been successfully deployed on board the Chang’e-3/4 and Chang’e-5 missions. In this review, we investigate the performance indicators, structural design, selected AOTF performance parameters, data acquisition of the three lunar in situ spectral instruments used in the Chang’e missions. In addition, we also show the scientific achievement of lunar technology based on in situ spectral data.

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