Results 11 to 20 of about 100,981 (208)

Metal–Organic Framework‐Surface‐Enhanced Infrared Absorption Platform Enables Simultaneous On‐Chip Sensing of Greenhouse Gases [PDF]

open access: yesAdvanced Science, 2020
Simultaneous on‐chip sensing of multiple greenhouse gases in a complex gas environment is highly desirable in industry, agriculture, and meteorology, but remains challenging due to their ultralow concentrations and mutual interference.
Hong Zhou   +9 more
doaj   +2 more sources

Infrared Plasmonic Biosensor with Tetrahedral DNA Nanostructure as Carriers for Label‐Free and Ultrasensitive Detection of miR‐155

open access: yesAdvanced Science, 2021
MicroRNAs play an important role in early development, cell proliferation, apoptosis, and cell death, and are aberrantly expressed in many types of cancers.
Xindan Hui   +8 more
doaj   +1 more source

Metamaterial-based label-free optical biosensing

open access: yesCailiao gongcheng, 2021
Metamaterials have drawn extensive attention for their fine regulation of electromagnetic waves at subwavelength scales. They have abundant electromagnetic modes, and support highly confined and enhanced electromagnetic fields on the surface which are ...
TAO Cheng-dong   +5 more
doaj   +1 more source

Surface-enhanced mid-infrared absorption spectroscopy using miniaturized-disc metasurface

open access: yesScientific Reports, 2021
Surface-enhanced infrared spectroscopy is an important technique for improving the signal-to-noise ratio of spectroscopic material identification measurements in the mid-infrared fingerprinting region.
Mitchell Semple, Ashwin K. Iyer
doaj   +1 more source

A comprehensive review on plasmonic-based biosensors used in viral diagnostics

open access: yesCommunications Biology, 2021
Mohan, Abdulhalim and Cvelbar investigated the capabilities of different plasmonic-based sensing techniques including the surface plasmon resonance (SPR), localised SPR, surface-enhanced Raman scattering (SERS), surface-enhanced fluorescence (SEF) and ...
Anand M. Shrivastav   +2 more
doaj   +1 more source

Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption

open access: yesNanophotonics, 2022
Resonant optical cavities are essential components in mid-infrared applications. However, typical film-type cavities require multilayer stacks with a micron-thick spacer due to mid-infrared wavelengths, and their performance is limited by narrow ...
Kachiraju Satya R.   +6 more
doaj   +1 more source

Sol–Gel Ceramics for SEIRAS and SERS Substrates

open access: yesCrystals, 2021
Surface Enhanced Infrared Absorption Spectroscopy and Surface Enhanced Raman Spectroscopy are analytic techniques that have not been massively adopted since there are issues that still need to be solved with regard to the nature of the signal enhancement
Jesús Alberto Garibay’Alvarado   +1 more
doaj   +1 more source

Nanostructure-enhanced infrared spectroscopy

open access: yesNanophotonics, 2021
While infrared spectroscopy is a powerful technique that provides molecular information such as chemical constituents and chemical structures of analytes, it suffers from low absorption cross-section resulting in low sensitivity and poor signal-to-noise ...
Tanaka Takuo, Yano Taka-aki, Kato Ryo
doaj   +1 more source

Surface Enhanced Infrared Absorption Studies of SiO2–TiO2–Ag Nanofibers: Effect of Silver Electrodeposition Time on the Amplification of Signals

open access: yesCrystals, 2021
Surface Enhanced on Infrared Absorption (SEIRAS) and Raman Spectroscopy (SERS) are nondestructive analytic techniques used to detect low concentrations and recognize the fingerprints of molecules.
Blanca Selenis Cabello-Ribota   +2 more
doaj   +1 more source

Enhanced Vibrational Spectroscopies as Tools for Small Molecule Biosensing

open access: yesSensors, 2015
In this short summary we summarize some of the latest developments in vibrational spectroscopic tools applied for the sensing of (small) molecules and biomolecules in a label-free mode of operation. We first introduce various concepts for the enhancement
Souhir Boujday   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy