, 2010). Furthermore, metallic nanoparticles such as gold and silver act as amplifiers to produce strong Raman spectra used in surface enhanced Raman spectroscopy (SERS)-based imaging (Brus, 2008; Thakor et al., 2011), which enabled deep tissue penetration. Another deep tissue imaging technique...
A UV Raman spectrum of ND-ODA 3 (FIG. 8) revealed typical features of nanodiamond: a broad and downshifted peak of diamond at 1327 cm−1 and a broad intense peak at 1630 cm−1. The unresolved peaks of C—H (at ˜2980 cm−1) and N—H (at ˜3200 cm−1) were also ...
Fig. 1: X-ray diffraction patterns and Raman spectra of ND/DMG composite and P–T phase diagram of glassy carbon. a, X-ray diffraction patterns measured under ambient conditions. D represents the diffraction peaks of diamond, and G represents the diffraction peaks of disordered multilayer graphen...
The OLC particles were characterised using a high-resolution transmission electron microscope (HRTEM) for observing its microstructure, an X-ray diffractometer (XRD) for determining its crystal structure and component, and a Raman spectrometer for confirming its content. The results showed that the OLC...
Raman spectroscopyonion-like carbonOnion-like carbon (OLC) was synthesised by annealing detonation nanodiamond for 1.5h at temperatures from 500 to 1400°C and at a vacuum of 1Pa. The results showed that the nanodiamond was transformed into the amorphous carbon (a-C) at first and then the a...
This, for Raman and PL imaging ND spectroscopic properties are utilized while lifetime imaging capability of ND at the used conditions (two photon excitation and detection in the 450–650 nm range) is low. This kind of ND is poorly distinguishable with the biological object structures due to...
The researchers spent about a year of testing to verify they were producing diamonds and that the process could be replicated, Kumar said. The team did different tests themselves and brought in Yap's lab to analyze the nanoparticles by Raman spectroscopy. ...
To support these excellent properties, TEM, color, reflectivity, and Raman spectroscopy measurements were also carried out. The microstructure of the composites is very homogeneous with average grain sizes between 200 and 500nm depending on the processing temperature. Two morphologies are present: (a)...
A LabRam Aramis confocal microRaman system of Jobin-Yvon Horiba was used for the spectroscopic char- acterization of the same powders deposited on Si wafer. The two lines were provided by a He-Ne laser source (632.8 nm) and a DPSS laser source (532 nm). The signal was collected ...
In comparison, polycrystalline graphite has a smaller grain size and thus contains more defects, mainly concentrated at the crystallite boundaries, and leading to a significant Raman defect band. Carbon blacks and quasi-amorphous soot were chosen because they are assumed to contain numerous structural ...