Results 71 to 80 of about 43,574 (244)
Transient stimulated Raman scattering spectroscopy and imaging
Light: Science & ApplicationsStimulated Raman scattering (SRS) has been developed as an essential quantitative contrast for chemical imaging in recent years. However, while spectral lines near the natural linewidth limit can be routinely achieved by state-of-the-art spontaneous ...
Qiaozhi Yu +6 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A new electrochemical system based on a microporous hybrid of carbon nanoplatelets and nanotubes to selectively capture Ni2+ from wastewater is constructed. The system temperature rises rapidly when irradiated with sunlight, which enhances the Ni2+ removal rate by 250% and the selectivity by 53%, and the energy consumption is also reduced by 51 ...
Ziquan Wang +11 more
wiley +1 more source
Cavity-enhanced Raman microscopy of individual carbon nanotubes
Nature Communications, 2016 Enhancement techniques are a viable route to improve the intrinsically weak Raman scattering intensity. Here the authors demonstrate Purcell enhancement of Raman scattering in a tunable, high-finesse microcavity and use it for Raman imaging of individual
Thomas Hümmer +5 more
doaj +1 more source
Química Nova, 2012 Raman imaging spectroscopy is a highly useful analytical tool that provides spatial and spectral information on a sample. However, CCD detectors used in dispersive instruments present the drawback of being sensitive to cosmic rays, giving rise to spikes ...
Guilherme Post Sabin +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Topological van der Waals contacts represent a new class of electrodes for 2D semiconductors, enabling precise control of the Schottky barrier height (SBH) and contact resistance (RC) through interlayer distance and orbital hybridization engineering. In Se‐based transition metal dichalcogenides, these contacts achieve an ultralow SBH of 7 meV, RC of 0.
Soheil Ghods +15 more
wiley +1 more source
Ultrabright gap-enhanced Raman tags for high-speed bioimaging
Nature Communications, 2019 The speed of surface-enhanced Raman spectroscopy (SERS) imaging is generally limited due to low Raman signals. Here, the authors develop bright gap-enhanced Raman tags with external hot spots and demonstrate their use in fast near-infrared bioimaging.
Yuqing Zhang +4 more
doaj +1 more source
Raman Hyperspectral Imaging for Detection of Watermelon Seeds Infected with Acidovorax citrulli
Sensors, 2017 The bacterial infection of seeds is one of the most important quality factors affecting yield. Conventional detection methods for bacteria-infected seeds, such as biological, serological, and molecular tests, are not feasible since they require expensive
Hoonsoo Lee +6 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Fluorescent nanodiamonds (fNDs) have emerged as an invaluable quantum sensing platform for biological and biochemical systems. This paper investigates the influence of common surface functionalization strategies for bioconjugation on the quantum properties of nitrogen vacancy (NV) centers in nanodiamonds.
Anja Sadžak +6 more
wiley +1 more source
, 1991 We have used newly developed holographic notch filters for obtaining both Stokes and anti-Stokes Raman images. The filters can be used as close as {plus minus}70 cm{sup {minus}1} from the Rayleigh line. We have demonstrated that they are insensitive to polarization, have 80% transmission across their clear apertures and block laser light by 10{sup 4 ...
openaire +3 more sources
Raman Imaging of Biomedical Samples
, 2018 Fluorescence microscopy, a gold standard in the tissue or cell imaging, has several drawbacks, with a severe one being its disability to elucidate the chemical characteristics of the sample. Confocal Raman microscopy is a tempting label free alternative to fluorescence and a prospective future method of medical diagnostics.
Kaczor, Agnieszka +5 more
openaire +2 more sources