scholarly journals Nanoscale mapping of newly-synthesised phospholipid molecules in a biological cell using tip-enhanced Raman spectroscopy

2017 ◽  
Vol 53 (16) ◽  
pp. 2451-2454 ◽  
Author(s):  
Naresh Kumar ◽  
Marek M. Drozdz ◽  
Haibo Jiang ◽  
Daniela M. Santos ◽  
David J. Vaux
Keyword(s):  
Raman Spectroscopy ◽  
Biological Cell ◽  
Label Free ◽  
Tip Enhanced Raman Spectroscopy ◽  
First Time ◽  
Non Destructive

Non-destructive & label-free nanoscale mapping of newly-synthesised phospholipid molecules inside a biological cell is demonstrated using tip-enhanced Raman spectroscopy for the first time.

Exploring the structure and formation mechanism of amyloid fibrils by Raman spectroscopy: a review

The Analyst ◽  
2015 ◽  
Vol 140 (15) ◽  
pp. 4967-4980 ◽  
Author(s):  
Dmitry Kurouski ◽  
Richard P. Van Duyne ◽  
Igor K. Lednev
Keyword(s):  
Raman Spectroscopy ◽  
Formation Mechanism ◽  
Structural Characterization ◽  
Amyloid Fibrils ◽  
Label Free ◽  
Amyloidogenic Proteins ◽  
Non Destructive

Applications of Raman spectroscopy, a label-free non-destructive technique, for the structural characterization of amyloidogenic proteins, prefibrilar oligomers, and mature fibrils.

Label-Free Mapping of Osteopontin Adsorption to Calcium Oxalate Monohydrate Crystals by Tip-Enhanced Raman Spectroscopy

2012 ◽  
Vol 134 (41) ◽  
pp. 17076-17082 ◽  
Author(s):  
Nastaran Kazemi-Zanjani ◽  
Honghong Chen ◽  
Harvey A. Goldberg ◽  
Graeme K. Hunter ◽  
Bernd Grohe ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Calcium Oxalate ◽  
Calcium Oxalate Monohydrate ◽  
Label Free ◽  
Tip Enhanced Raman Spectroscopy

scholarly journals Raman spectroscopy enables phenotyping and assessment of nutrition values of plants: a review

Plant Methods ◽  
2021 ◽  
Vol 17 (1) ◽  
Author(s):  
William Z. Payne ◽  
Dmitry Kurouski
Keyword(s):  
Raman Spectroscopy ◽  
Abiotic Stresses ◽  
Molecular Techniques ◽  
Plant Diseases ◽  
Label Free ◽  
Breeding Programs ◽  
Non Invasive ◽  
Nutrition Value ◽  
Non Destructive ◽  
Selection Of

AbstractOur civilization has to enhance food production to feed world’s expected population of 9.7 billion by 2050. These food demands can be met by implementation of innovative technologies in agriculture. This transformative agricultural concept, also known as digital farming, aims to maximize the crop yield without an increase in the field footprint while simultaneously minimizing environmental impact of farming. There is a growing body of evidence that Raman spectroscopy, a non-invasive, non-destructive, and laser-based analytical approach, can be used to: (i) detect plant diseases, (ii) abiotic stresses, and (iii) enable label-free phenotyping and digital selection of plants in breeding programs. In this review, we critically discuss the most recent reports on the use of Raman spectroscopy for confirmatory identification of plant species and their varieties, as well as Raman-based analysis of the nutrition value of seeds. We show that high selectivity and specificity of Raman makes this technique ideal for optical surveillance of fields, which can be used to improve agriculture around the world. We also discuss potential advances in synergetic use of RS and already established imaging and molecular techniques. This combinatorial approach can be used to reduce associated time and cost, as well as enhance the accuracy of diagnostics of biotic and abiotic stresses.

Label free investigation of biomolecules on the nanometer scale using tip-enhanced Raman spectroscopy

2010 ◽  
Author(s):  
Volker Deckert ◽  
Tanja Deckert-Gaudig ◽  
Marc Richter ◽  
Regina Treffer ◽  
Xiumei Lin
Keyword(s):  
Raman Spectroscopy ◽  
Nanometer Scale ◽  
Label Free ◽  
Tip Enhanced Raman Spectroscopy

scholarly journals Tip-Enhanced Raman Spectroscopy of 2D Semiconductors

2021 ◽  
Author(s):  
Mahfujur Rahaman ◽  
Dietrich R.T. Zahn
Keyword(s):  
Raman Spectroscopy ◽  
Physical Properties ◽  
Spectroscopic Investigation ◽  
Co2 Reduction ◽  
Chemical Imaging ◽  
Label Free ◽  
2D Semiconductors ◽  
Tremendous Progress ◽  
Tip Enhanced Raman Spectroscopy

Two-dimensional (2D) semiconductors are one of the most extensively studied modern materials showing potentials in large spectrum of applications from electronics/optoelectronics to photocatalysis and CO2 reduction. These materials possess astonishing optical, electronic, and mechanical properties, which are different from their bulk counterparts. Due to strong dielectric screening, local heterogeneities such as edges, grain boundaries, defects, strain, doping, chemical bonding, and molecular orientation dictate their physical properties to a great extent. Therefore, there is a growing demand of probing such heterogeneities and their effects on the physical properties of 2D semiconductors on site in a label-free and non-destructive way. Tip-enhanced Raman spectroscopy (TERS), which combines the merits of both scanning probe microscopy and Raman spectroscopy, has experienced tremendous progress since its introduction in the early 2000s and is capable of local spectroscopic investigation with (sub-) nanometer spatial resolution. Introducing this technique to 2D semiconductors not only enables us to understand the effects of local heterogeneities, it can also provide new insights opening the door for novel quantum mechanical applications. This book chapter sheds light on the recent progress of local spectroscopic investigation and chemical imaging of 2D semiconductors using TERS. It also provides a basic discussion of Raman selection rules of 2D semiconductors important to understand TERS results. Finally, a brief outlook regarding the potential of TERS in the field of 2D semiconductors is provided.

Photonic Crystal Fiber for Efficient Raman Scattering of Thiol-Capped Quantum Dots in Aqueous Solution

2011 ◽  
Vol 1346 ◽  
Author(s):  
Jacky S. W. Mak ◽  
Abdiaziz A. Farah ◽  
Feifan Chen ◽  
Amr S. Helmy
Keyword(s):  
Raman Spectroscopy ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Surface Passivation ◽  
Synthesis Process ◽  
Crystal Fiber ◽  
Cdte Quantum Dot ◽  
First Time ◽  
Non Destructive

ABSTRACTA novel hollow-core photonic crystal fiber platform was used for the first time to observe clear vibrational modes of the CdTe core, CdS0.7Te0.3 interface, and carboxylate-metal complexes in dilute aqueous CdTe quantum dot (QD) solutions. These modes demonstrate the presence of crystalline cores, defects and surface passivation responsible for photoluminescent efficiency and stability. In addition, 3-mercaptopropionic acid (MPA)-capped QDs show higher crystallinity and stability than those capped with thioglycolic acid (TGA) and 1-thioglycerol (TG). This detailed, non-destructive characterization was carried out using Raman spectroscopy for solutions with QD concentration of 2 mg/mL, which is similar to their concentration during synthesis process. This platform can be extended to the in-situ studies of any colloidal nanoparticles and aqueous solutions of relevant biological samples using Raman spectroscopy.

scholarly journals Detection of Biomarkers Relating to Quality and Differentiation of Some Commercially Significant Whole Fish Using Spatially Off-Set Raman Spectroscopy

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3776
Author(s):  
Jeremy D. Landry ◽  
Peter J. Torley ◽  
Ewan W. Blanch
Keyword(s):  
Raman Spectroscopy ◽  
Food Production ◽  
Analytical Techniques ◽  
Label Free ◽  
Analysis Techniques ◽  
Chemical Analysis Techniques ◽  
Aquaculture Industry ◽  
Detection Of Biomarkers ◽  
Non Destructive

Aquaculture represents a major part of the world’s food supply. This area of food production is developing rapidly, and as such the tools and analytical techniques used to monitor and assess the quality of fish need to also develop and improve. The use of spatially off-set Raman spectroscopy (SORS) is particularly well-suited for these applications, given the ability of this technique to take subsurface measurements as well as being rapid, non-destructive and label-free compared to classical chemical analysis techniques. To explore this technique for analysing fish, SORS measurements were taken on commercially significant whole fish through the skin in different locations. The resulting spectra were of high quality with subsurface components such as lipids, carotenoids, proteins and guanine from iridophore cells clearly visible in the spectra. These spectral features were characterised and major bands identified. Chemometric analysis additionally showed that clear differences are present in spectra not only from different sections of a fish but also between different species. These results highlight the potential application for SORS analysis for rapid quality assessment and species identification in the aquaculture industry by taking through-skin measurements.

Probing the Plasmon-Driven Suzuki-Miyaura Coupling Reactions with Cargo-TERS towards Tailored Catalyzation

Nanoscale ◽  
2021 ◽  
Author(s):  
Zhandong Li ◽  
Dmitry Kurouski
Keyword(s):  
Raman Spectroscopy ◽  
Analytical Approach ◽  
Coupling Reactions ◽  
Label Free ◽  
In Situ Assessment ◽  
Molecular Reactivity ◽  
Tip Enhanced Raman Spectroscopy

We present a label-free approach that is based on tip-enhanced Raman spectroscopy (TERS) for a direct in-situ assessment of molecular reactivity in plasmon-driven reactions. Using this analytical approach, named cargo-TERS,...

Sign in / Sign up

Export Citation Format

Share Document