Compositional assessment of bone by Raman spectroscopy

The Analyst ◽  
2021 ◽  
Author(s):  
Mustafa Unal ◽  
Rafay Ahmed ◽  
Anita Mahadevan-Jansen ◽  
Jeffry Nyman
Keyword(s):  
Raman Spectroscopy ◽  
Sample Preparation ◽  
Physiochemical Properties ◽  
Minimal Sample ◽  
Non Destructive

Raman spectroscopy (RS) is used to analyze the physiochemical properties of bone because it is non-destructive and requires minimal sample preparation. With over two decades of research involving measurements of...

Detection of different adulteration from milk with non-destructive approach (Near infrared spectroscopy): A short review

2020 ◽  
Vol 1 (3) ◽  
pp. 14-15
Author(s):  
Agnibha Das Majumdar ◽  
Amandeep Kaur ◽  
surname given-names Pavas given-names ◽  
Neha Munjal ◽  
Uma Kamboj ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Sample Preparation ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Senior Citizens ◽  
Short Review ◽  
Chemical Methods ◽  
Minimal Sample ◽  
Non Destructive

The present article is a review work about the role of near infrared spectroscopy to detect different adulterantsin the milk. Milk is a nutritive food and very useful and healthy drink for the child and senior citizens. It has various nutrition parameters. But, to increase the profit many adulterantsare added in the milk which are very harmful for human body. The adulterants can be detected using various chemical methods which are time consuming, hazardous and destructive in nature.Thus there is need of a nondestructive, green and rapid method to detect the adulteration. Near Infrared spectroscopy (NIRS) is one of the most useful and robust technique which needs no minimal sample preparation and is rapid, green, and non destructive in nature. The review covers the various nondestructive methods to detect various adulterants.

Fast and accurate shale maturity determination by Raman spectroscopy measurement with minimal sample preparation

2017 ◽  
Vol 173 ◽  
pp. 150-157 ◽  
Author(s):  
Bastian Sauerer ◽  
Paul R. Craddock ◽  
Mohammed D. AlJohani ◽  
Khalid L. Alsamadony ◽  
Wael Abdallah
Keyword(s):  
Raman Spectroscopy ◽  
Sample Preparation ◽  
Spectroscopy Measurement ◽  
Minimal Sample

Applications of Raman Spectroscopy in Metamorphic Petrology and Tectonics

Elements ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 105-110 ◽  
Author(s):  
Andrey V. Korsakov ◽  
Matthew J. Kohn ◽  
Maria Perraki
Keyword(s):  
Raman Spectroscopy ◽  
Sample Preparation ◽  
Chemical Equilibrium ◽  
Carbonaceous Material ◽  
Ultrahigh Pressure ◽  
Metamorphic Rocks ◽  
Temperature Sensitive ◽  
Metamorphic Petrology ◽  
Minimal Sample ◽  
Tectonic Processes

Raman spectroscopy is widely applied in metamorphic petrology and offers many opportunities for geological and tectonic research. Minimal sample preparation preserves sample integrity and microtextural information, while use with confocal microscopes allows spatial resolution down to the micrometer level. Raman spectroscopy clearly distinguishes mineral polymorphs, providing crucial constraints on metamorphic conditions, particularly ultrahigh-pressure conditions. Raman spectroscopy can also be used to monitor the structure of carbonaceous material in metamorphic rocks. Changes in structure are temperature-sensitive, so Raman spectroscopy of carbonaceous material is widely used for thermometry. Raman spectroscopy can also detect and quantify strain in micro-inclusions, offering new barometers that can be applied to understand metamorphic and tectonic processes without any assumptions about chemical equilibrium.

Influence of Sample Preparation on Intrinsic Stress Inside a Model Chip—Comparison of Results from Electric Read-Out and Raman Spectroscopy

2017 ◽  
Author(s):  
T. Schaffus ◽  
H. Pfaff ◽  
P. Albert ◽  
M. Schaffus ◽  
F. Kroninger ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Sample Preparation ◽  
Intrinsic Stress ◽  
Stress Monitoring ◽  
Preparation Methods ◽  
Comparison Of Results ◽  
The Given

Abstract The given project is to benchmark typical preparation methods under the aspect of the influence of initial intrinsic stresses inside electric components. Raman spectroscopy has been applied as well as the piezo resistive readout on a specifically designed model stress monitoring chip.

No lyse no wash flow cytometry for maximizing minimal sample preparation

Methods ◽  
2018 ◽  
Vol 134-135 ◽  
pp. 149-163 ◽  
Author(s):  
Jordi Petriz ◽  
Jolene A. Bradford ◽  
Michael D. Ward
Keyword(s):  
Flow Cytometry ◽  
Sample Preparation ◽  
Minimal Sample

Optical Diagnostics of Microstructures Fabricated Using Quantum Well Intermixing

1999 ◽  
Vol 607 ◽  
Author(s):  
A. Saher Helmy ◽  
A.C. Bryce ◽  
C.N. Ironside ◽  
J.S. Aitchison ◽  
J.H. Marsh ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Quantum Well ◽  
Spatial Resolution ◽  
Optical Diagnostics ◽  
Complete Suppression ◽  
Quantum Well Intermixing ◽  
Spatially Resolved ◽  
Non Destructive ◽  
Insight Into ◽  
Free Vacancy

AbstractIn this paper we shall discuss techniques for accurate, non-destructive, optical characterisation of structures fabricated using quantum well intermixing (QWI). Spatially resolved photoluminescence and Raman spectroscopy were used to characterise the lateral bandgap profiles produced by impurity free vacancy disordering (IFVD) technology. Different features were used to examine the spatial resolution of the intermixing process. Features include 1:1 gratings as well as isolated stripes. From the measurements, the spatial selectivity of IFVD could be identified, and was found to be ∼4.5 μm, in contrast with the spatial resolution of the process of sputtering induced intermixing, which was found to be ∼2.5 μm. In addition, PL measurements on 1:1 gratings fabricated using IFVD show almost complete suppression of intermixing dielectric cap gratings with periods less than 10 microns. Finally, some insight into the limitations and merits of PL and Raman for the precision characterisation of QWI will be presented.

Development of Deep Learning Algorithms to Discriminate Giant Cell Tumor of Bone from Adjacent Normal Tissues by Confocal Raman Spectroscopy

The Analyst ◽  
2022 ◽  
Author(s):  
Carol PY Lau ◽  
Wenao Ma ◽  
Kwan Yau Law ◽  
Maribel Lacambra ◽  
Kwok Chuen Wong ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Giant Cell Tumor ◽  
Giant Cell ◽  
Chemical Structure ◽  
Cell Tumor ◽  
Confocal Raman Spectroscopy ◽  
Normal Tissues ◽  
Analysis Technique ◽  
Destructive Analysis ◽  
Non Destructive

Raman spectroscopy is a non-destructive analysis technique that provides detailed information about the chemical structure of the tumor. Raman spectra of 52 giant cell tumor of bone (GCTB), and 21...

scholarly journals Raman spectroscopy as a tool for ecology and evolution

2017 ◽  
Vol 14 (131) ◽  
pp. 20170174 ◽  
Author(s):  
Arno Germond ◽  
Vipin Kumar ◽  
Taro Ichimura ◽  
Jerome Moreau ◽  
Chikara Furusawa ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Low Cost ◽  
Biological Systems ◽  
Spectral Information ◽  
Selective Pressures ◽  
Biological Features ◽  
Microscopy Technique ◽  
Pragmatic Aspects ◽  
Non Destructive

Scientists are always on the lookout for new modalities of information which could reveal new biological features that are useful for deciphering the complexity of biological systems. Here, we introduce Raman spectroscopy as a prime candidate for ecology and evolution. To encourage the integration of this microscopy technique in the field of ecology and evolution, it is crucial to discuss first how Raman spectroscopy fits within the conceptual, technical and pragmatic considerations of ecology and evolution. In this paper, we show that the spectral information holds reliable indicators of intra- and interspecies variations, which can be related to the environment, selective pressures and fitness. Moreover, we show how the technical and pragmatic aspects of this modality (non-destructive, non-labelling, speed, relative low cost, etc.) enable it to be combined with more conventional methodologies. With this paper, we hope to open new avenues of research and extend the scope of available methodologies used in ecology and evolution.

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