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 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.

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.

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,...

FT-Raman spectroscopy of the Christmas wreath lichen, Cryptothecia rubrocincta (Ehrenb.:Fr.) Thor

2005 ◽  
Vol 37 (2) ◽  
pp. 181-189 ◽  
Author(s):  
Howell G. M. EDWARDS ◽  
Luiz F. C. de OLIVEIRA ◽  
Mark R. D. SEAWARD
Keyword(s):  
Raman Spectroscopy ◽  
Calcium Oxalate ◽  
Major Axis ◽  
Calcium Oxalate Monohydrate ◽  
Calcium Oxalate Dihydrate ◽  
Spectral Signatures ◽  
Lichen Substances ◽  
Ft Raman Spectroscopy ◽  
Ft Raman

FT-Raman spectra have been obtained from the highly pigmented lichen Cryptothecia rubrocincta from a Brazilian vestigial rainforest habitat. Spectral signatures of the two main lichen substances, chiodectonic acid and confluentic acid, were identified in adjacent zones of the thallus. Of the characteristic zonal colours displayed by the thallus, the outer red zone contained chiodectonic acid and no calcium oxalate, and graded into by a pink zone with calcium oxalate monohydrate (whewellite) in association with chiodectonic acid, to the inside of which is a concentric white zone containing calcium oxalate dihydrate (weddellite); however, chemically differentiated sites (elliptical brown flecks with a major axis of c. 15 μm) in both the pink and red zones contained chiodectonic acid and calcium oxalate monohydrate. The role of Raman spectroscopy in the spatial identification of lichen substances in the thallial structures is demonstrated.

Raman Spectroscopy Study of Calcium Oxalate Extracted from Cacti Stems

2014 ◽  
Vol 68 (11) ◽  
pp. 1260-1265 ◽  
Author(s):  
Claudio Frausto-Reyes ◽  
Sofia Loza-Cornejo ◽  
Tania Terrazas ◽  
María de la Luz Miranda-Beltrán ◽  
Xóchitl Aparicio-Fernández ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Calcium Oxalate ◽  
Near Infrared ◽  
Crystal Morphology ◽  
Calcium Oxalate Monohydrate ◽  
Spectroscopic Technique ◽  
Spectroscopy Study ◽  
Natural Habitats ◽  
Calcium Oxalate Dihydrate ◽  
Opuntia Species

To find markers that distinguish the different Cactaceae species, by using near infrared Raman spectroscopy and scanning electron microscopy, we studied the occurrence, in the stem, of solid deposits in five Cactaceae species ( Coryphantha clavata, Ferocactus latispinus, Opuntia ficus-indica, O. robusta, and O. strepthacantha) collected from their natural habitats from a region of México. The deposits in the tissues usually occurred as spheroidal aggregates, druses, or prismatic crystals. From the Raman spectra, the crystals were identified either as calcium oxalate monohydrate (CaC2O4H2O) or calcium oxalate dihydrate (CaC2O4·2H2O) Opuntia species (subfamily Opuntioideae) showed the presence of CaC2O4·H2O, and the deposition of CaC2O4·2H2O was present in C. clavata and F. latispinus (subfamily Cactoideae, Cacteae tribe). As a punctual technique, Raman spectroscopy seems to be a useful tool to identify crystal composition. In addition to allowing the analysis of crystal morphology, this spectroscopic technique can be used to identify Cactaceae species and their chemotaxonomy.

Surface-and tip-enhanced Raman spectroscopy of silicon

2008 ◽  
Author(s):  
K. J. Yi ◽  
X. N. He ◽  
W. Q. Yang ◽  
Y. S. Zhou ◽  
W. Xiong ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Tip Enhanced Raman Spectroscopy
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