However, the obtained Raman spectral characteristics such as peak position are modified because of local temperature enhancement of the inclusions by the excitation laser, which might engender systematic errors
Raman spectroscopy is an integral part of graphene research. It is used to determine the number and orientation of layers, the quality and types of edge, and the effects of perturbations, such as electric and magnetic fields, strain, doping, disorder and functional groups. This, in turn, prov...
Raman spectroscopy produces a bone ‘signature’ that can be studied for characteristics of bone mineral, collagen, and noncollagenous proteins. The bone mineral phase is primarily monitored through phosphate vibrations, including symmetric stretching of the phosphate to oxygen (PO) bonds (v1 PO4),...
Table 1 is a summary of the SHERLOC instrument, its component characteristics and performance values. 1.2 Jezero Crater Field Site After an exhaustive site selection process (Grant et al. 2018), Jezero crater was chosen to be the destination of the Perseverance rover (Stack et al. 2020) ...
[85,86]. The wavelength of charge density oscillations, known as plasmons, is dependent on these surface nanostructures and can enhance the light-matter interaction locally [87]. Plasmons are a prominent topic in physics and plasmonic devices such as filters [88], waveguides [88,89], polaris...
paraquat dissolved in lake water. We first passed the lake water drawn from a local pond through membrane filters of different cutoffs (seeMethodsfor details) to remove particulates and aggregates to reduce background scattering. After confirming that the filtered lake water exhibited characteristics ...
Therefore, not all spectroscopy tools are suitable for studying cellular characteristics, and careful consideration of the trade-offs and benefits is necessary. As mentioned before, melanoma is one of the most important malignant skin diseases, and most mutations in melanoma are BRAF kinase mutations....
The band pass filter 110 may have any desired characteristics, such as width, transparency, side mode suppression, filter shape, physical size and shape, etc. The characteristics of the filter may be adapted to determine stray light levels, sensitivity, resolution, and the like. The narrowband ...
FIG. 4 is a cross section of an excitation-light outgoing end of the Raman probe in which the band-pass filter and the edge filter are incorporated. FIG. 5 shows the characteristics of the filters mounted at the tip of the Raman probe. FIG. 6 shows the Raman spectrum of a quartz ...
including multiplied scatter noise, system thermal noise, etc.82. The generated electrical noise exhibits zero-mean characteristics, and most of them belong to the Gaussian white noise category83. The simplest denoising method is to average the Raman backscattering signals collected by the system, ...