Characterization of a trap pyroelectric sensor noise and improvement of the measurement range

2006 ◽  
Vol 26 (2-3) ◽  
pp. 314-316 ◽  
Author(s):  
I. Mellouki ◽  
N. Sifi ◽  
O. Touayar ◽  
S. Abroug ◽  
N. Yacoubi
Author(s):  
S. A. Pullano ◽  
M. Greco ◽  
D. M. Corigliano ◽  
D. P. Foti ◽  
A. Brunetti ◽  
...  

1993 ◽  
Vol 324 ◽  
Author(s):  
Rachel M Geatches ◽  
Karen J Reeson ◽  
Alan J Criddle ◽  
Roger P Webb

AbstractIn this paper the application of microscope-spectrophotometry to the nondestructive characterization of a variety of multi-layer GaAs/A1GaAs structures, is described. Spectral reflectance results are used to indirectly determine variations in aluminium content, and the interdependency of aluminium content with layer thicknesses. The penetration depth of light from the visible spectrum is assessed from the correlation between spectral reflectance measurements and fitted optical models. Finally, a series of single quantum wells are investigated, and it is concluded that a significant improvement in the characterization of these materials will be achieved with an extension of the spectral measurement range into the ultra violet.


1998 ◽  
Author(s):  
A. Frandas ◽  
Dorin Dadarlat ◽  
Mihai Chirtoc ◽  
Henk Jalink ◽  
Dane D. Bicanic ◽  
...  

2018 ◽  
Vol 34 (6) ◽  
pp. 3088-3094 ◽  
Author(s):  
Abdul Wahid Wahab ◽  
Abdul Karim ◽  
Nursiah La Nafie ◽  
Nurafni Nurafni ◽  
I. Wayan Sutapa

Silver nanoparticles have been synthesized by reduction method using extract of Muntingia calabura L. leaf a bioreductor. The process of silver nanoparticles formation was monitored by UV-Vis method. The results showed that the absorbance values increased according to the increase of reaction time. Maximum absorption of silver nanoparticle was obtained at a wavelength of 41-421 nm. The size of silver nanoparticles was determined using a PSA (Particle Size Analyzer) with a particle size distribution of 97.04 nm. The functional groups compound that contribute in the synthesis was analyzed using Fourier Transform Infrared Spectroscopy (FTIR). Morphology of the silver nanoparticles was observed by an Scanning Electron Microscope instrument and the structure characterization of the compounds were analyzed using X-Ray Diffraction. The glucose nanosensor based on silver nanoparticles have the measurement range of 1 mM - 4 mM with the regretion (R2) is 0,9516, the detection limit of sensor is 3,2595 mM, the sensitivity of sensor is 2,0794 A. mM-1. mM-2.


2021 ◽  
Author(s):  
S.A. Pullano ◽  
M. Greco ◽  
D.P. Foti ◽  
A. Brunetti ◽  
A.S. Fiorillo

Author(s):  
S.A. Pullano ◽  
M. Greco ◽  
S. Scalise ◽  
E. I. Parrotta ◽  
V. Lucchino ◽  
...  

2013 ◽  
Vol 25 (9) ◽  
pp. 1496-1501 ◽  
Author(s):  
Pramod Kumar E.K. ◽  
Lise N. Feldborg ◽  
Kristoffer Almdal ◽  
Thomas L. Andresen

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7034
Author(s):  
Marco Pisani ◽  
Milena Astrua ◽  
Srijith Bangaru Thirumalai Raj

High precision angular actuators are used for high demanding applications such as laser steering for photolithography. Piezo technology allows developing actuators with a resolution as low as a few nanoradians, with bandwidths as high as several kilohertz. In most demanding applications, the actual performance of these instruments needs to be characterized. The best angular measurement instruments available today do not sufficient resolution and/or bandwidth to satisfy these needs. At the Istituto Nazionale di Ricerca Metrologica, INRIM a device was designed and built aiming at characterizing precision 2D angular actuators with a resolution surpassing the best devices on the market. The device is based on a multi reflection scheme that allows multiplying the deflection angle by a factor of 70. The ultimate resolution of the device is 2 prad/√Hz over a measurement range of 36 µrad with a measurement band >10 kHz. The present work describes the working principle, the practical realization, and a case study on a top-level commercial angular actuator (Nano-MTA2 produced by Mad City Labs).


Author(s):  
Marco Pisani ◽  
Milena Astrua ◽  
Srijith Thirumalai

High precision angular actuators are used for high demanding applications such as laser steering for photolithography. Piezo technology allows developing actuators with such a high resolution that the characterization of the same is out of the capabilities of commercially available instruments. At INRIM we have designed and built a device to the purpose of characterizing precision 2D angular actuators with a resolution surpassing the best devices on the market. The device is based on a multi reflection scheme that allows multiplying the deflection angle by a factor of 70. The ultimate resolution of the device is 2 prad/√Hz over a measurement range of 36 µrad with a measurement band > 10 kHz. The working principle, the practical realization and the case study on a top-level commercial angular actuator (Nano-MTA2 produced by MadCityLabs) are described.


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