Results 81 to 90 of about 48,317 (276)

Use of portable devices and confocal Raman spectrometers at different wavelength to obtain the spectral information of the main organic components in tomatoes (Solanum Lycopersicum) fruits [PDF]

open access: yes, 2013
Tomato (Solanum lycopersicum) fruit samples, in two ripening stages, ripe (red) and unripe (green), collected from a cultivar in the North of Spain (Barrika, Basque Country), were analyzed directly, without any sample pretreatment, with two different ...
De Diego Rodríguez, Alberto   +4 more
core   +3 more sources

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

open access: yesAdvanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan   +6 more
wiley   +1 more source

Gold nanoparticle coated silicon nitride chips for intracellular surface-enhanced raman spectroscopy [PDF]

open access: yes, 2014
Using surface-enhanced Raman spectroscopy on gold-nanoparticle-decorated silicon nitride chips, we monitor the release of dextran-rhodamin molecules from capsules inside living cells.
Baets, Roel   +4 more
core  

Raman spectroscopy as probe of nanometer-scale strain variations in graphene

open access: yes, 2015
Confocal Raman spectroscopy is a versatile, non-invasive investigation tool and a major workhorse for graphene characterization. Here we show that the experimentally observed Raman 2D line width is a measure of nanometer-scale strain variations in ...
Banszerus, Luca   +11 more
core   +1 more source

Correction of diffraction effects in confocal raman microspectroscopy [PDF]

open access: yes, 2006
A mathematical approach developed to correct depth profiles of wet-chemically modified polymer films obtained by confocal Raman microscopy is presented which takes into account scattered contributions originated from a diffraction-limited laser focal
Gallardo, A.   +3 more
core   +1 more source

Deterministic hBN Bubbles as a Versatile Platform for Studies on Single‐Photon Emitters

open access: yesAdvanced Functional Materials, EarlyView.
Single‐photon emitters (SPEs) in hBN are promising for quantum technologies; however, in exfoliated samples their activation is required, limiting reproducibility of previous studies. This work introduces a large‐area MOVPE‐grown hBN platform that hosts SPEs without prior activation.
Piotr Tatarczak   +8 more
wiley   +1 more source

Structural Modification of Single-Layer Graphene Under Laser Irradiation Featured by Micro-Raman Spectroscopy

open access: yesNanoscale Research Letters, 2017
Confocal micro-Raman spectroscopy is used as a sensitive tool to study the nature of laser-induced defects in single-layer graphene. Appearance and drastic intensity increase of D- and D′ modes in the Raman spectra at high power of laser irradiation is ...
Yurii Stubrov   +4 more
doaj   +1 more source

Nose-to-Brain Translocation and Cerebral Biodegradation of Thin Graphene Oxide Nanosheets

open access: yesCell Reports Physical Science, 2020
Summary: Understanding the interactions of graphene oxide (GO)-based materials with biological systems is critical due to the potential applications of these materials.
Leon Newman   +7 more
doaj   +1 more source

Remote temperature monitoring in ocular tissue using confocal Raman spectroscopy

open access: yesJournal of Biomedical Optics, 2005
We demonstrated the feasibility of Raman spectroscopy for remote temperature monitoring within the aqueous humor of the rabbit eye in vivo. Using a confocal Raman spectroscopy system, Raman spectra from 2580 to 3800 cm(-1) were recorded in HPLC-grade water and in the aqueous humor of the rabbit eye under in vivo and ex vivo conditions within a ...
Noel J C, Bauer   +3 more
openaire   +2 more sources

Design of double-walled carbon nanotubes for biomedical applications [PDF]

open access: yes, 2012
Double-walled carbon nanotubes (DWNTs) prepared by catalytic chemical vapour deposition were functionalized in such a way that they were optimally designed as a nano-vector for the delivery of small interfering RNA (siRNA), which is of great interest for
Coley, Helen M.   +8 more
core   +2 more sources

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