Applications of Microspectroscopy in the Near-Infrared Region

1989 ◽  
Vol 43 (5) ◽  
pp. 865-873 ◽  
Author(s):  
Matthew J. Smith ◽  
Richard T. Carl
Keyword(s):  
Near Infrared ◽  
Materials Science ◽  
Structural Information ◽  
Infrared Region ◽  
Small Samples ◽  
Infrared Analysis ◽  
Mid Infrared ◽  
Infrared Microspectroscopy ◽  
Different Types ◽  
Near Infrared Region

In this report, several applications of near-infrared microspectroscopy are illustrated using unmodified commercial instrumentation. The principal advantage of near-infrared microspectroscopy is the ability to analyze small samples which are totally absorbing in the mid-infrared region. Near-infrared analysis is shown to yield useful structural information about several different types of samples. Examples from the fields of materials science, single crystals, forensics and biological science are illustrated, and some tentative band assignments are made.

Identifying different types of tumors in human brain, breast, and uterus according to their optical properties in the red to near-infrared region

2020 ◽  
Author(s):  
Omnia Hamdy
Keyword(s):  
Human Brain ◽  
Near Infrared ◽  
Biological Tissues ◽  
Infrared Region ◽  
Infrared Light ◽  
Tumor Type ◽  
Significant Information ◽  
Different Types ◽  
Light Diffusion ◽  
Near Infrared Region

AbstractOptical diagnosis techniques are gaining validity due to their competitive advantages including safety and functionality. These methods probe the tissue using light in the red to near-infrared region that shows relatively high penetration in biological tissues. The reflected light which is controlled by tissue absorption and scattering parameters can provide significant information about its pathology. In the present work, a method for identifying different types of tumors in human brain, breast and uterus based on their absorption and scattering characteristics in the red to near-infrared spectra is proposed. The classification method depends on studying the red to near-infrared light diffusion through the examined tissues using Monte-Carlo simulation and finite element solution of the light diffusion equation. The obtained tissue reflectance profiles, optical fluence rate distribution and absorbed faction in each tumor type show different characteristics along the selected wavelengths. The variation in these three features can be considered as an alternative approach of medical diagnosis or can assist with other conventional diagnosis methods.

Ligand Influence Versus Electronic Configuration of d-metal Ion in Determining the Fate of NIR Emission from LnIII Ions: A Case Study with CuII, NiII and ZnII Complexes.

2021 ◽  
Author(s):  
Abhineet Verma ◽  
Sk Saddam Hossain ◽  
Sailaja S Sunkari ◽  
Joseph Reibenspies ◽  
Satyen Saha
Keyword(s):  
Metal Ion ◽  
Selection Rule ◽  
Near Infrared ◽  
Electronic Configuration ◽  
Infrared Region ◽  
Direct Excitation ◽  
Characteristic Emission ◽  
Nir Emission ◽  
Near Infrared Region

Lanthanides (LnIII) are well known for their characteristic emission in the Near-Infrared Region (NIR). However, direct excitation of lanthanides is not feasible as described by Laporte’s parity selection rule. Here,...

Highly luminescent InP-In(Zn)P/ZnSe/ZnS core/shell/shell colloidal quantum dots with tunable emission synthesized based on growth-doping

2021 ◽  
Author(s):  
Cong Shen ◽  
Yan Qing Zhu ◽  
Zixiao Li ◽  
Jingling Li ◽  
Hong Tao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Infrared Region ◽  
Colloidal Quantum Dots ◽  
High Quality ◽  
Promising Alternative ◽  
Lower Toxicity ◽  
Near Infrared Region ◽  
Inp Quantum Dots ◽  
Tunable Emission

InP quantum dots (QDs) are considered as the most promising alternative to Cd-based QDs with the lower toxicity and emission spectrum tunability ranging from visible to near-infrared region. Although high-quality...

Evaluation of melon drying using hyperspectral imaging technique in the near infrared region

LWT ◽  
2021 ◽  
Vol 143 ◽  
pp. 111092
Author(s):  
Jose Marcelino S. Netto ◽  
Fernanda A. Honorato ◽  
Patrícia M. Azoubel ◽  
Louise E. Kurozawa ◽  
Douglas F. Barbin
Keyword(s):  
Hyperspectral Imaging ◽  
Near Infrared ◽  
Imaging Technique ◽  
Infrared Region ◽  
Near Infrared Region

scholarly journals Retraction: Water-soluble multidentate polymers compactly coating Ag2S quantum dots with minimized hydrodynamic size and bright emission tunable from red to second near-infrared region

Nanoscale ◽  
2020 ◽  
Vol 12 (41) ◽  
pp. 21459-21459
Author(s):  
Charlotte Marshall
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Infrared Region ◽  
Water Soluble ◽  
Hydrodynamic Size ◽  
Near Infrared Region ◽  
Ag2s Quantum Dots ◽  
Bright Emission

Retraction of ‘Water-soluble multidentate polymers compactly coating Ag2S quantum dots with minimized hydrodynamic size and bright emission tunable from red to second near-infrared region’ by Rijun Gui et al., Nanoscale, 2014, 6, 5467–5473, DOI: 10.1039/C4NR00282B.

scholarly journals Stable and tunable plasmon resonance of molybdenum oxide nanosheets from the ultraviolet to the near-infrared region for ultrasensitive surface-enhanced Raman analysis

2019 ◽  
Vol 10 (25) ◽  
pp. 6330-6335 ◽  
Author(s):  
Jinhu Wang ◽  
Yinhua Yang ◽  
Hua Li ◽  
Jun Gao ◽  
Ping He ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Region ◽  
Raman Analysis ◽  
Surface Protection ◽  
Surface Enhanced ◽  
Color Tunable ◽  
Surface Enhanced Raman ◽  
Heavily Doped ◽  
Near Infrared Region ◽  
Preparation Strategy

Preparation of color-tunable and stable plasmonic MoO3 nanomaterials remains challenging, due to the lack of an effective preparation strategy and surface protection in heavily doped MoO3.

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