Results 1 to 10 of about 606 (208)

Infrared metamaterial for surface-enhanced infrared absorption spectroscopy: pushing the frontier of ultrasensitive on-chip sensing

open access: yesInternational Journal of Optomechatronics, 2021
Surface-enhanced infrared absorption (SEIRA) spectroscopy is a powerful technique that overcomes the issue of low molecular absorption cross-sections in infrared spectroscopy.
Hong Zhou   +3 more
doaj   +2 more sources

Honeycomb-like aluminum antennas for surface-enhanced infrared absorption sensing

open access: yesNanophotonics, 2023
Surface-enhanced infrared absorption (SEIRA) spectroscopy is a competent method to detect trace quantity of molecules and even protein conformational flexibility by enhancing their vibrational modes.
Najem Melissa   +5 more
doaj   +3 more sources

Over-coupled resonator for broadband surface enhanced infrared absorption (SEIRA)

open access: yesNature Communications, 2023
Detection of molecules is a key issue for many applications. Surface enhanced infrared absorption (SEIRA) uses arrays of resonant nanoantennas with good quality factors which can be used to locally enhance the illumination of molecules. The technique has
Laura Paggi   +8 more
doaj   +3 more sources

Probing Denaturation of Protein A via Surface-Enhanced Infrared Absorption Spectroscopy

open access: yesBiosensors, 2022
We apply surface-enhanced infrared absorption (SEIRA) spectroscopy to monitor the denaturation process of a surface-bound protein A monolayer. Our proposed platform relies on a plasmonic metasurface comprising different spatial subregions (“pixels”) that
Valentina Di Meo   +7 more
doaj   +4 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

Detection of glutathione in dairy products based on surface-enhanced infrared absorption spectroscopy of silver nanoparticles

open access: yesFrontiers in Nutrition, 2022
In this paper, silver nanoparticles (AgNPs) were prepared as enhanced substrates for the detection of glutathione in dairy products by polyol reduction of silver nitrate.
Wenliang Qi   +5 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

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