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Study of Chemical Enhancement Mechanism in Non-plasmonic Surface Enhanced Raman Spectroscopy (SERS) [PDF]

open access: yesFrontiers in Chemistry, 2019
Surface enhanced Raman spectroscopy (SERS) has been intensively investigated during the past decades for its enormous electromagnetic field enhancement near the nanoscale metallic surfaces.
Jayeong Kim   +7 more
doaj   +4 more sources

Chemical Enhancement for Retrofitting Moving Bed Biofilm and Integrated Fixed Film Activated Sludge Systems into Membrane Bioreactors [PDF]

open access: yesMembranes, 2019
Positive effects of retrofitting MBBR and IFAS systems into MBRs can be exploited by introducing chemical enhancement applying coagulants in the membrane separation step.
Zakhar Maletskyi   +3 more
doaj   +2 more sources

Dynamic Characteristic Analysis of Centrifugal Pump Impeller Based on Fluid-Solid Coupling

open access: yesJournal of Marine Science and Engineering, 2022
Purpose: Centrifugal pumps are prone to vibration problems during operation due to poor dynamic characteristics of its impellers that serve as the only running parts of such devices; the dynamic characteristics of the impeller during operation are the ...
Yufang Li   +4 more
doaj   +1 more source

DFT and TD-DFT Study of the Chemical Effect in the SERS Spectra of Piperidine Adsorbed on Silver Colloidal Nanoparticles

open access: yesNanomaterials, 2022
The surface-enhanced Raman scattering (SERS) spectra of piperidine adsorbed on silver/chloride colloids were studied by a combined density functional theory (DFT)/time dependent DFT (TD-DFT) approach.
Francesco Muniz-Miranda   +3 more
doaj   +1 more source

Recognition of dipole-induced electric field in 2D materials for surface-enhanced Raman scattering

open access: yesFrontiers in Chemistry, 2023
The application of two-dimensional (2D) materials, including metallic graphene, semiconducting transition metal dichalcogenides, and insulating hexagonal boron nitride (h-BN) for surface-enhancement Raman spectroscopy has attracted extensive research ...
Yuxue Yang   +6 more
doaj   +1 more source

Experimental Study and Optimization of the Impeller in High-speed Centrifugal Pump

open access: yesGuan'gai paishui xuebao, 2023
【Background and Objective】 Fatigue fracture has become a major cause of failure in centrifugal pump impellers due to their operation at high speeds. Excessive speed leads to various prestresses, resulting in severe vibrations, resonance, and ultimately ...
WANG Yanwei, REN Yancong, LI Yufang
doaj   +1 more source

Modeling and Theoretical Analysis of the SERS Enhancement Factor Considering the Electronic Structural Energy

open access: yesIEEE Access, 2021
The enhancement factor is one of the key parameters characterizing the phenomenon of surface-enhanced Raman scattering. At present, this parameter is described by an empirical formula or a certain single physical mechanism instead of a unified model of ...
Xu Yang   +5 more
doaj   +1 more source

Engineered Two-Dimensional Nanostructures as SERS Substrates for Biomolecule Sensing: A Review

open access: yesBiosensors, 2023
Two-dimensional nanostructures (2DNS) attract tremendous interest and have emerged as potential materials for a variety of applications, including biomolecule sensing, due to their high surface-to-volume ratio, tuneable optical and electronic properties.
K. A. Esther Jebakumari   +2 more
doaj   +1 more source

Improving the Detection Sensitivity for Laser-Induced Breakdown Spectroscopy: A Review

open access: yesFrontiers in Physics, 2020
Laser-induced breakdown spectroscopy (LIBS) is fast, on-line, causes little sample damage, and can be applied in remote field locations. In recent years, LIBS has been widely used in many fields of scientific research for element detection.
Xinglan Fu   +3 more
doaj   +1 more source

Air-Sea Trace Gas Fluxes: Direct and Indirect Measurements

open access: yesFrontiers in Marine Science, 2022
The past decade has seen significant technological advance in the observation of trace gas fluxes over the open ocean, most notably CO2, but also an impressive list of other gases.
Christopher W. Fairall   +11 more
doaj   +1 more source

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