scholarly journals Fast broad-band photon detector based on quantum well devices and charge-integrating electronics for non-invasive FEL monitoring

2016 ◽  
Author(s):  
M. Antonelli ◽  
T. Ganbold ◽  
G. Biasiol ◽  
G. Cautero ◽  
R. Sergo ◽  
...  
Keyword(s):  
Quantum Well ◽  
Broad Band ◽  
Photon Detector ◽  
Non Invasive ◽  
Quantum Well Devices

scholarly journals Design and Analysis of a Continuous and Non-Invasive Multi-Wavelength Optical Sensor for Measurement of Dermal Water Content

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2162
Author(s):  
Mohammad Mamouei ◽  
Subhasri Chatterjee ◽  
Meysam Razban ◽  
Meha Qassem ◽  
Panayiotis A. Kyriacou
Keyword(s):  
Water Content ◽  
Optical Sensor ◽  
Broad Band ◽  
Gravimetric Analysis ◽  
Skin Damage ◽  
Biophysical Parameter ◽  
Non Invasive ◽  
Multi Wavelength ◽  
Invasive Measurement

Dermal water content is an important biophysical parameter in preserving skin integrity and preventing skin damage. Traditional electrical-based and open-chamber evaporimeters have several well-known limitations. In particular, such devices are costly, sizeable, and only provide arbitrary outputs. They also do not permit continuous and non-invasive monitoring of dermal water content, which can be beneficial for various consumer, clinical, and cosmetic purposes. We report here on the design and development of a digital multi-wavelength optical sensor that performs continuous and non-invasive measurement of dermal water content. In silico investigation on porcine skin was carried out using the Monte Carlo modeling strategy to evaluate the feasibility and characterize the sensor. Subsequently, an in vitro experiment was carried out to evaluate the performance of the sensor and benchmark its accuracy against a high-end, broad band spectrophotometer. Reference measurements were made against gravimetric analysis. The results demonstrate that the developed sensor can deliver accurate, continuous, and non-invasive measurement of skin hydration through measurement of dermal water content. Remarkably, the novel design of the sensor exceeded the performance of the high-end spectrophotometer due to the important denoising effects of temporal averaging. The authors believe, in addition to wellbeing and skin health monitoring, the designed sensor can particularly facilitate disease management in patients presenting diabetes mellitus, hypothyroidism, malnutrition, and atopic dermatitis.

Characteristics of the Organic Single-Quantum-Well Devices Fabricated by the Doping Method

1999 ◽  
Vol 16 (12) ◽  
pp. 922-924 ◽  
Author(s):  
Jing-song Huang ◽  
Zhi-yuan Xie ◽  
Kai-xia Yang ◽  
Chuan-nan Li ◽  
Yi Zhao ◽  
...  
Keyword(s):  
Quantum Well ◽  
Single Quantum ◽  
Single Quantum Well ◽  
Quantum Well Devices

Nonlinear all-optical GaN∕AlGaN multi-quantum-well devices for 100Gb∕s applications at λ=1.55μm

2005 ◽  
Vol 87 (20) ◽  
pp. 201108 ◽  
Author(s):  
Greg Sun ◽  
Jacob B. Khurgin ◽  
Richard A. Soref
Keyword(s):  
Quantum Well ◽  
All Optical ◽  
Quantum Well Devices ◽  
Multi Quantum Well

Modelling of visible and near infrared wavelength quantum well devices made of zinc-blende InxGa1 xN

2004 ◽  
Vol 16 (3) ◽  
pp. 511-519 ◽  
Author(s):  
A Bhouri ◽  
H Mejri ◽  
F Ben Zid ◽  
H Belmabrouk ◽  
M Said ◽  
...  
Keyword(s):  
Quantum Well ◽  
Near Infrared ◽  
Infrared Wavelength ◽  
Zinc Blende ◽  
Quantum Well Devices
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