Investigations of near IR photoluminescence properties in TiO2:Nd,Yb materials using hyperspectral imaging methods

2013 ◽  
Vol 140 ◽  
pp. 57-64 ◽  
Author(s):  
Edita Garskaite ◽  
Andreas S. Flø ◽  
Antonius T.J. van Helvoort ◽  
Aivaras Kareiva ◽  
Espen Olsen
Keyword(s):  
Hyperspectral Imaging ◽  
Photoluminescence Properties ◽  
Imaging Methods ◽  
Near Ir

scholarly journals Influence of Nd3+ doping on the structural and near-IR photoluminescence properties of nanostructured TiO2 films

2011 ◽  
Vol 10 ◽  
pp. 167-171 ◽  
Author(s):  
R. Pandiyan ◽  
R. Bartali ◽  
V. Micheli ◽  
G. Gottardi ◽  
I. Luciu ◽  
...  
Keyword(s):  
Tio2 Films ◽  
Photoluminescence Properties ◽  
Nanostructured Tio2 ◽  
Near Ir

Measurement Tools for Non-Invasive Monitoring of the Plants Growth Conditions by Using Hyperspectral Imaging Methods: a Review

2021 ◽  
Vol 2 (43) ◽  
pp. 54-61
Author(s):  
Dmitriy A. Burynin ◽  
◽  
Aleksandr A. Smirnov
Keyword(s):  
Hyperspectral Imaging ◽  
Physiological State ◽  
Effective Means ◽  
Research Problem ◽  
High Spectral Resolution ◽  
Research Purpose ◽  
Imaging Method ◽  
Invasive Monitoring ◽  
Imaging Methods ◽  
Non Invasive

Portable spectroradiometers and hyperspectral cameras are increasingly being used to quickly assess the physiological state of plants. The operation of these devices is based on the registration of reflection or reflection and transmission spectra. (Research purpose) The research purpose is in analyzing the technical means and methods of non-invasive monitoring of the plant state based on the registration of the reflection spectra of leaves. (Materials and methods) The article presents a review of the work on the application of hyperspectral imaging methods. Authors classified and analyzed materials on spectroscopic radiometers and hyperspectral cameras, and outlined the prospects for implementation. Authors applied the methods of a systematic approach to the research problem. (Results and discussion) Hyperspectral imaging methods serve as an effective means of monitoring plants. It is possible to determine the pigment composition of plants, lack of nutrition, and detect biotic stress through hyperspectral imaging. The article presents methods of application of portable spectroradiometers and hyperspectral cameras. With the help of these devices it is possible to carry out measurements with high spectral resolution. The difficulty of accurately detecting the content of pigments in the leaves lies in the mutual overlap of the areas of light absorption by them. The main drawback of spectroradiometers is that they measure only at one point on a single sheet. The article presents the difficulties encountered in interpreting the results obtained by the hyperspectral camera. The background reflectivity of the soil, the geometry of the vegetation cover, and the uneven lighting can make errors in the measurements. (Conclusions) The article presents the disadvantages of the hyperspectral imaging method when using only the reflection spectrum. In order to increase the accuracy of the determination of pigments and stresses of various origins, it is necessary to develop a portable device that combines the methods of recording reflection and fluorescence.

scholarly journals Compressive Sensing Hyperspectral Imaging by Spectral Multiplexing with Liquid Crystal

2018 ◽  
Vol 5 (1) ◽  
pp. 3 ◽  
Author(s):  
Yaniv Oiknine ◽  
Isaac August ◽  
Vladimir Farber ◽  
Daniel Gedalin ◽  
Adrian Stern
Keyword(s):  
Liquid Crystal ◽  
Compressive Sensing ◽  
Hyperspectral Imaging ◽  
Spectral Properties ◽  
Sensor Array ◽  
Spectral Imaging ◽  
Spectral Domain ◽  
Imaging Methods ◽  
Order Of Magnitude ◽  
Spectral Multiplexing

Hyperspectral (HS) imaging involves the sensing of a scene’s spectral properties, which are often redundant in nature. The redundancy of the information motivates our quest to implement Compressive Sensing (CS) theory for HS imaging. This article provides a review of the Compressive Sensing Miniature Ultra-Spectral Imaging (CS-MUSI) camera, its evolution, and its different applications. The CS-MUSI camera was designed within the CS framework and uses a liquid crystal (LC) phase retarder in order to modulate the spectral domain. The outstanding advantage of the CS-MUSI camera is that the entire HS image is captured from an order of magnitude fewer measurements of the sensor array, compared to conventional HS imaging methods.

scholarly journals Examination of historical paintings by state-of-the-art hyperspectral imaging methods: from scanning infra-red spectroscopy to computed X-ray laminography

2014 ◽  
Vol 2 (1) ◽  
pp. 13 ◽  
Author(s):  
Stijn Legrand ◽  
Frederik Vanmeert ◽  
Geert Van der Snickt ◽  
Matthias Alfeld ◽  
Wout De Nolf ◽  
...  
Keyword(s):  
Hyperspectral Imaging ◽  
State Of The Art ◽  
Imaging Methods ◽  
X Ray ◽  
Infra Red

scholarly journals Activity assessment of root caries lesions with thermal and near-IR imaging methods

2016 ◽  
Vol 10 (3) ◽  
pp. 433-445 ◽  
Author(s):  
Robert C. Lee ◽  
Cynthia L. Darling ◽  
Michal Staninec ◽  
Antonio Ragadio ◽  
Daniel Fried
Keyword(s):  
Root Caries ◽  
Imaging Methods ◽  
Near Ir ◽  
Activity Assessment ◽  
Ir Imaging ◽  
Caries Lesions

Control of near infrared photoluminescence properties of single-walled carbon nanotubes by functionalization with dendrons

Nanoscale ◽  
2018 ◽  
Vol 10 (48) ◽  
pp. 23012-23017 ◽  
Author(s):  
Yutaka Maeda ◽  
Yui Konno ◽  
Michio Yamada ◽  
Pei Zhao ◽  
Xiang Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Near Infrared ◽  
Single Walled Carbon Nanotubes ◽  
Photoluminescence Properties ◽  
Single Walled Carbon ◽  
Near Ir ◽  
Walled Carbon Nanotubes ◽  
Sodium Naphthalenide

Single-walled carbon nanotubes (SWNTs) were functionalized by reacting them with sodium naphthalenide and dendrons to control their photoemission in the near-IR region.

scholarly journals Non-destructive clinical assessment of occlusal caries lesions using near-IR imaging methods

2011 ◽  
Vol 43 (10) ◽  
pp. 951-959 ◽  
Author(s):  
Michal Staninec ◽  
Shane M. Douglas ◽  
Cynthia L. Darling ◽  
Kenneth Chan ◽  
Hobin Kang ◽  
...  
Keyword(s):  
Clinical Assessment ◽  
Occlusal Caries ◽  
Imaging Methods ◽  
Near Ir ◽  
Ir Imaging ◽  
Non Destructive ◽  
Caries Lesions

Photoluminescence properties of quinary Ag–(In,Ga)–(S,Se) quantum dots with a gradient alloy structure for in vivo bioimaging

2021 ◽  
Author(s):  
Nurmanita Rismaningsih ◽  
Hiroki Yamauchi ◽  
Tatsuya Kameyama ◽  
Takahisa Yamamoto ◽  
Saho Morita ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Band Edge ◽  
Photoluminescence Properties ◽  
Alloy Structure ◽  
Near Ir

Mixed-anion Ag–(In,Ga)–(S,Se) QDs exhibited a tunable band-edge PL peak with the S/Se ratio and had superior durability for near-IR in vivo bioimaging in comparison with single anion counterparts.

scholarly journals Improved Materials Aging Diagnostics and Mechanisms through 2D Hyperspectral Imaging Methods and Algorithms

2002 ◽  
Author(s):  
DAVID M. HAALAND ◽  
CHRISTINE M. WEHLBURG ◽  
LAURA E. MARTIN ◽  
MARK H. VAN BENTHEM ◽  
MICHAEL R. KEENAN ◽  
...  
Keyword(s):  
Hyperspectral Imaging ◽  
Imaging Methods
Sign in / Sign up

Export Citation Format

Share Document